Rev.7 EM208R4429F
SCARA ROBOT
LS3-B/LS6-B series
MANIPULATOR MANUAL
MANIPULATOR MANUAL
LS3-B/LS6-B series Rev.7
LS3-B/LS6-B Rev.7 i
SCARA ROBOT
LS3-B/LS6-B series Manipulator Manual
R
ev.7
Copyright 2018-2020 SEIKO EPSON CORPORATION. All rights reserved.
ii LS3-B/LS6-B Rev.7
FOREWORD
Thank you for purchasing our robot products.
This manual contains the information necessary for the correct use of the manipulator.
Please carefully read this manual and other related manuals before installing the robot
system.
Keep this manual handy for easy access at all times.
WARRANTY
The Manipulator and its optional parts are shipped to our customers only after being
subjected to the strictest quality controls, tests, and inspections to certify its compliance with
our high performance standards.
Product malfunctions resulting from normal handling or operation will be repaired free of
charge during the normal warranty period. (Please contact the supplier of your region for
warranty period information.)
However, customers will be charged for repairs in the following cases (even if they occur
during the warranty period):
1.
Damage or malfunction caused by improper use which is not described in the manual, or
careless
use.
2.
Malfunctions caused by customers’ unauthorized disassembly.
3.
Damage due to improper adjustments or unauthorized repair attempts.
4.
Damage caused by natural disasters such as earthquake, flood, etc.
Warnings, Cautions, Usage:
1.
If the Manipulator or associated equipment is used outside of the usage conditions and
product specifications described in the manuals, this warranty is void.
2.
If you do not follow the WARNINGS and CAUTIONS in this manual, we cannot be
responsible for any
malfunction or accident, even if the result is injury or death.
3.
We cannot foresee all possible dangers and consequences. Therefore, this manual cannot
warn the user of all possible hazards.
LS
3-B/LS6-B Rev.7 iii
TRADEMARKS
Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of
Microsoft Corporation in the United States and/or other countries. Other brand and
product names are trademarks or registered trademarks of the respective holders.
NOTICE
No part of this manual may be copied or reproduced without authorization.
The contents of this manual are subject to change without notice.
Please notify us if you should find any errors in this manual or if you have any comments
regarding its contents.
MANUFACTURER
CONTACT INFORMATION
Contact information is described in “SUPPLIERS” in the first pages of the following
manual:
Robot System Safety and Installation Read this manual first
iv LS3-B/LS6-B Rev.7
Regarding battery disposal
The crossed out wheeled bin label that can be found on your product indicates that this
product and incorporated batteries should not be disposed of via the normal household waste
stream. To prevent possible harm to the environment or human health please separate this
product and its batteries from other waste streams to ensure that it can be recycled in an
environmentally sound manner. For more details on available collection facilities please
contact your local government office or the retailer where you purchased this product. Use
of the chemical symbols Pb, Cd or Hg indicates if these metals are used in the battery.
This information only applies to customers in the European Union, according to
DIRECTIVE 2006/66/EC OF THE EUROPEAN PARLIAMENT AND OF THE
COUNCIL OF 6 September 2006 on batteries and accumulators and waste batteries and
accumulators and repealing Directive 91/157/EEC and legislation transposing and
implementing it into the various national legal systems.
For other countries, please contact your local government to investigate the possibility of
recycling your product.
The battery removal/replacement procedure is described in the following manuals:
Controller manual Maintenance section
LS
3-B/LS6-B Rev.7 v
Before Reading This Manual
This section describes what you should know before reading this manual.
Structure of Control System
The LS3-B/LS6-B series Manipulators can be used with the following combinations of
Controllers and software.
Controller : RC90-B
Software : LS6-B: EPSON RC+ 7.0 Ver.7.4.3 or later
LS3-B: EPSON RC+ 7.0 Ver.7.4.4 or later
Turning ON/OFF Controller
When you see the instruction “Turn ON/OFF the Controller” in this manual, be sure to turn
ON/OFF all the hardware components. For the Controller composition, refer to the table
above.
Shape of Motors
The shape of the motors used for the Manipulator that you are using may be different from
the shape of the motors described in this manual because of the specifications.
Setting by Using Software
This manual contains setting procedures by using software. They are marked with the
following icon.
Figures in this Manual
The figures of manipulators indicated in this manual are basically Standard-model
Manipulator. Unless special instruction is provided, the specifications of Standard-model
and Cleanroom-model are the same.
Pictures in this Manual
Pictures and illustrations of the manipulator in this manual may differ from using
manipulator depending on the shipment date and the specifications.
EPSON
RC+
vi LS3-B/LS6-B Rev.7
TABLE OF CONTENTS
LS
3-B/LS6-B Rev.7 vii
Setup & Operation
1. Safety 3
1.1 Conventions.............................................................................................. 3
1.2 Design and Installation Safety .................................................................. 4
1.2.1 Strength of the Ball Screw Spline ................................................. 5
1.3 Operation Safety ...................................................................................... 6
1.4 Emergency Stop ....................................................................................... 8
1.5 Emergency Movement Without Drive Power ......................................... 10
1.6 ACCELS Setting for CP Motions ............................................................. 11
1.7 Warning Labels ....................................................................................... 12
2. Specifications 14
2.1 Features of LS3-B/LS6-B series Manipulators ...................................... 14
2.2 Model Number ........................................................................................ 15
2.3 Part Names and Outer Dimensions ....................................................... 16
2.3.1 LS3-B .......................................................................................... 16
2.3.2 LS6-B .......................................................................................... 20
2.4 Specifications ......................................................................................... 24
2.5 How to Set the Model ............................................................................. 26
3. Environments and Installation 27
3.1 Environmental Conditions ...................................................................... 27
3.2 Base Table .............................................................................................. 28
3.3 Mounting Dimensions ............................................................................. 29
3.4 Unpacking and Transportation ............................................................... 30
3.5 Installation Procedure............................................................................. 31
3.5.1 Standard-Model .......................................................................... 31
3.5.2 Cleanroom-Model ....................................................................... 32
3.6 Connecting the Cables ........................................................................... 32
3.7 User Wires and Pneumatic Tubes.......................................................... 34
3.8 Relocation and Storage .......................................................................... 36
3.8.1 Precautions for Relocation and Storage .................................... 36
3.8.2 Relocation ................................................................................... 37
4. Setting of End Effectors 38
4.1 Attaching an End Effector....................................................................... 38
4.2 Attaching Cameras and Valves .............................................................. 40
4.3 Weight and Inertia Settings .................................................................... 41
4.3.1 Weight Setting ............................................................................ 41
4.3.2 Inertia Setting ............................................................................. 45
4.4 Precautions for Auto Acceleration/Deceleration of Joint #3 ................... 50
TABLE OF CONTENTS
v
iii LS3-B/LS6-B Rev.7
5. Motion Range 52
5.1 Motion Range Setting by Pulse Range ................................................... 52
5.1.1 Max. Pulse Range of Joint #1 ..................................................... 53
5.1.2 Max. Pulse Range of Joint #2 ..................................................... 53
5.1.3 Max. Pulse Range of Joint #3 ..................................................... 54
5.1.4 Max. Pulse Range of Joint #4 ..................................................... 54
5.2 Motion Range Setting by Mechanical Stops ........................................... 55
5.2.1 Setting the Mechanical Stops of Joints #1 and #2 ...................... 56
5.2.2 Setting the Mechanical Stop of Joint #3 ..................................... 58
5.3 Setting the Cartesian (Rectangular) Range in the XY Coordinate System
of the Manipulator ................................................................................... 59
5.4 Standard Motion Range .......................................................................... 60
Maintenance
1. Safety Maintenance 67
2. General Maintenance 68
2.1 Maintenance Inspection .......................................................................... 68
2.1.1 Schedule for Maintenance Inspection ......................................... 68
2.1.2 Inspection Point ........................................................................... 69
2.2 Overhaul (Parts Replacement) ............................................................... 70
2.3 Greasing .................................................................................................. 72
2.4 Tightening Hexagon Socket Head Cap Bolts ......................................... 73
2.5 Matching Origins ..................................................................................... 73
2.6 Layout of Maintenance Parts .................................................................. 74
3. Covers 75
3.1 Arm Top Cover ........................................................................................ 76
3.2 Arm Bottom Cover ................................................................................... 77
3.3 Connector Plate ...................................................................................... 78
3.4 Connector Sub Plate ............................................................................... 79
3.5 User Plate................................................................................................ 79
4. Cable 80
4.1 Replacing Cable Unit .............................................................................. 81
4.2 Wiring Diagrams ...................................................................................... 86
4.2.1 Signal Cable ................................................................................ 86
4.2.2 Power Cable ................................................................................ 88
4.2.3 User Cable .................................................................................. 89
4.2.4 Color of Cables............................................................................ 89
4.3 Replacing M/C Cable .............................................................................. 90
5. Joint #1 95
5.1 Replacing Joint #1 Motor ........................................................................ 96
5.2 Replacing Joint #1 Reduction Gear Unit .............................................. 100
TABLE OF CONTENTS
LS
3-B/LS6-B Rev.7 ix
6. Joint #2 103
6.1 Replacing Joint #2 Motor ..................................................................... 104
6.2 Replacing Joint #2 Reduction Gear Unit .............................................. 108
7. Joint #3 112
7.1 Replacing Joint #3 Motor ...................................................................... 113
7.2 Replacing the Timing Belt ..................................................................... 117
7.3 Replacing the Brake ............................................................................. 121
7.4 Checking the Timing Belt Tension (Z Belt) ........................................... 125
8. Joint #4 126
8.1 Replacing Joint #4 Motor ..................................................................... 127
8.2 Replacing the Timing Belt .................................................................... 131
8.2.1 U2 Belt ...................................................................................... 132
8.2.2 U1 Belt ...................................................................................... 138
8.3 Replacing the Brake (for LS6-B series only) ........................................ 142
8.4 Checking the Timing Belt Tension (U1, U2 Belts) ................................ 145
9. Bellows 146
10. Ball Screw Spline Unit 149
10.1 Greasing the Ball Screw Spline Unit .................................................. 149
10.1.1 Standard-model ...................................................................... 150
10.1.2 Cleanroom-model ................................................................... 151
10.2 Replacing the Ball Screw Spline Unit ................................................. 152
11. Boards 155
11.1 Replacing the Converter Board .......................................................... 156
11.2 Replacing the Control Board .............................................................. 158
12. LED Lamp 159
13. Calibration 161
13.1 About Calibration ................................................................................ 161
13.2 Calibration Procedure......................................................................... 162
13.3 Accurate Calibration of Joint #2 ......................................................... 172
13.4 Calibration Procedure without using Calibration Wizard ................... 174
14. Maintenance Parts List 178
14.1 LS3-B .................................................................................................. 178
14.2 LS6-B .................................................................................................. 179
TABLE OF CONTENTS
x LS3-B/LS6-B Rev.7
Setup & Operation
This volume contains information for setup and operation of the LS3-B/LS6-B series Manipulators.
Please read this volume thoroughly before setting up and operating the Manipulators.
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 3
1. Safety
Installation and transportation of manipulators and robotic equipment shall be performed by
qualified personnel and should conform to all national and local codes. Please read this
manual and other related manuals before installing the robot system or before connecting
cables.
Keep this manual handy for easy access at all times.
1.1 Conventions
Important safety considerations are indicated throughout the manual by the following
symbols. Be sure to read the descriptions shown with each symbol.
WARNING
This symbol indicates that a danger of possible serious injury or
death exists if the associated instructions are not followed
properly.
WARNING
This symbol indicates that a danger of possible serious injury or
death caused by electric shock exists if the associated
instructions are not followed properly.
CAUTION
This symbol indicates that a danger of possible harm to people
or physical damage to equipment and facilities exists if the
associated instructions are not followed properly.
Setup & Operation 1. Safety
4 LS3-B/LS6-B Rev.7
1.2 Design and Installation Safety
Only trained personnel should design and install the robot system. Trained
personnel are defined as those who have taken robot system training and
maintenance training classes held by the manufacturer, dealer, or local
representative company, or those who understand the manuals thoroughly and
have the same knowledge and skill level as those who have completed the training
courses.
To ensure safety, a safeguard must be installed for the robot system. For details
on the safeguard, refer to the Installation and Design Precautions in the Safety
chapter of the EPSON RC+ User’s Guide.
The following items are safety precautions for design personnel:
WARNING
■
Personnel who design and/or construct the robot system with this product must
read the
Safety chapter in the EPSON RC+ User’s Guide to understand the safety
requirements before designing and/or constructing the robot system. Designing
and/or constructing the robot system without understanding the safety
requirements is extremely hazardous, may result in serious bodily injury and/or
se
vere equipment damage to the robot system, and may cause serious safety
problems.
■
The Manipulator and the Controller must be used within the environmental
conditions described in their respective manuals.
This product has been
designed and manufactured strictly for use in a normal indoor environment. Using
the product in an environment
that exceeds the specified environmental conditions
may not only shorten the life cycle of the product but may also cause serious
safety problems.
■
The robot system must be used within the installation requirements described in
the manuals.
Using the robot system outside of the installation requirements
may not only shorten the life cycle of the product but also cause serious safety
problems.
Further precautions for installation are mentioned in the chapter Setup & Operation:
3. Environments and Installation. Please read this chapter carefully to understand
safe installation procedures before installing the robots and robotic equipment.
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 5
1.2.1 Strength of the Ball Screw Spline
If a load exceeding the allowable value is applied to the ball screw spline, it may not work
properly due to deformation or breakage of the shaft. If the ball screw spline is applied the
load exceeding the allowable value, it is necessary to replace the ball screw spline unit.
The allowable loads differ depending on distance where the load is applied to. For
calculating the allowable load, see the calculation formula below.
[Allowable bending moment]
LS3-B:M=13,000 N·mm
LS6-B:M=27,000 N·mm
[Moment]
M=F·L
＝
100·100
＝
10,000 N·mm
Example:
If 100 N (10.2kgf) load is applied
at 100 mm from
the end of the spline nut
End of the
spline nut
F
L
Setup & Operation 1. Safety
6 LS3-B/LS6-B Rev.7
1.3 Operation Safety
The following items are safety precautions for qualified Operator personnel:
WARNING
■
Please carefully read the
Safety-related Requirements in the Safety chapter of the
Safety and Installation
manual before operating the robot system. Operating the
robot system without understanding the safety requirements is extremely
hazardous and may result in serious bodily injury and/or sever
e equipment
damage to the robot system.
■
Do not enter the operating area of the Manipulator while the power to the robot
system is turned ON.
Entering the operating area with the power ON is extremely
hazardous and may cause serious safety problems as the Manipulator may move
even if it seems to
be stopped.
■
Before operating the robot system, make sure that no one is inside the
safeguarded area.
The robot system can be operated in the mode for teaching
even when someone is inside the safeguarded area.
The motion of the Manipulator is always i
n restricted (low speed and low power)
status to secure the safety of an operator.
However, operating the robot system
while someone is inside the safeguarded area
is extremely hazardous and may
result in serious safety problems in case that the Manipulator moves unexpectedly.
■
Immediately press the Emergency Stop switch whenever the Manipulator moves
abnormally while the robot system is operated.
Continuing the operation while
the Manipulator moves abnormally is extremely hazardous and may result in
serious bodily injury and/or severe equipment damage to the robot system.
WARNING
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before
performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with the
power ON is extremely hazardous and may result
in serious bodily injury as the
Manipulator may mo
ve abnormally, and also may result in electric shock and/or
malfunction of the robot system.
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 7
CAUTION
■
Whenever possible, only one person should operate the robot system.
If it is
necessary to operate the robot system with more than one person, ensure that all
people involved communicate with each other as to what they are doing and take
all necessary safety precautions.
■
Joint #1, #2, and #4:
If the joints are operated
repeatedly with the operating angle less than 5 degrees,
they may get damaged early because the bearings are likely to cause oil film
shortage in such situation. To prevent early breakdown, move the joints larger
than 50 degrees
for about five to ten times a day.
Joint #3:
If the up
-and-down motion of the hand is less than LS3-B: 32 mm LS6-B: 40 mm,
move the joint a half of the maximum stroke for five to ten times a day.
■
Vibration
(resonance) may occur continuously in low speed Manipulator motion
(Speed:
approx. 5 to 20%) depending on combination of Arm orientation and end
effector load.
Vibration arises from natural vibration frequency of the Arm and
can be controlled by following measures.
C
hanging Manipulator speed
Changing the teach points
Changing the end effector load
Setup & Operation 1. Safety
8 LS3-B/LS6-B Rev.7
1.4 Emergency Stop
If the Manipulator moves abnormally during operation, immediately press the Emergency
Stop switch. Stops the power supply to the motor, and the arm stops in the shortest distance
with the dynamic brake and mechanical brake.
Do not press the Emergency Stop switch unnecessarily while the Manipulator is operating.
Pressing the switch during the operation makes the brakes work. This will shorten the life
of the brakes due to the worn friction plates.
Normal brake life: About 2 years (when the brakes are used 100 times/day)
To place the system in emergency mode during normal operation, press the Emergency Stop
switch when the Manipulator is not moving. Refer to the Controller manual for
instructions on how to wire the Emergency Stop switch circuit.
Do not turn OFF the Controller while the Manipulator is operating.
If you attempt to stop the Manipulator in emergency situations such as “Safeguard Open”,
make sure to stop the Manipulator using the Emergency Stop switch of the Controller.
If the Manipulator is stopped by turning OFF the Controller while it is operating, following
problems may occur:
Reduction of the life and damage of the reduction gear unit
Position gap at the joints
In addition, if the Controller was forced to be turned OFF by blackouts and the like while
the Manipulator is operating, make sure to check the following points after power
restoration:
Whether or not the reduction gear is damaged
Whether or not the joints are in their proper positions
If there is a position gap, perform calibration by referring to the Maintenance 13.
Calibration in this manual.
Before using the Emergency Stop switch, be aware of the followings:
- The Emergency Stop (E-STOP) switch should be used to stop the Manipulator only in
case of emergencies.
- To stop the Manipulator operating the program except in emergency, use Pause (halt)
or STOP (program stop) commands.
Pause and STOP commands do not turn OFF the motors. Therefore, the brake does
not function.
- For the Safeguard system, do not use the circuit for E-STOP.
For details on the Safeguard system, refer to the following manuals.
EPSON RC+ User’s Guide
2. Safety - Installation and Design Precautions - Safeguard System
Safety and Installation
2.6 Connection to EMERGENCY Connector
To check brake problems, refer to the following manuals.
Manipulator Manual Maintenance
2.1.2 Inspection Point - Inspection While the Power is ON
(Manipulator is operating)
Safety and Installation
5.1.1 Manipulator
- Inspection While the Power is ON (Manipulator is operating)
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 9
Free running distance in emergency
The operating Manipulator cannot stop immediately after the Emergency Stop switch is
pressed.
The free running time/angle/distance of the Manipulator are shown below. However,
remember that the values vary depending on following conditions.
Weight of the end effector Weight setting
Weight of work piece Speed setting
Operating pose Accel setting
Conditions for Measurement
LS6-B*02*
LS3-B401*
Accel Setting
100
100
Speed Setting
100
100
Load [kg]
6
3
Weight Setting
6
3
Joint #1
Stop point
Point where the
emergency stop
signal is input
Target point
Start point of
operation
Joint #2
Controller RC90-B
Manipulator LS6-B502* LS6-B602* LS6-B702* LS3-B401*
Free
running
time
Joint #1 + Joint #2 [sec.] 0.4 0.7 0.7 0.4
Joint #3 [sec.] 0.2 0.1
Free
running
angle
Joint #1 [
°
] 42 100 85 110
Joint #2 [
°
] 42 45 50 20
Joint #1 + Joint #2 [
°
] 84 130 135 130
Free
running
distance
Joint #3 [mm] 90 20
Setup & Operation 1. Safety
10 LS3-B/LS6-B Rev.7
1.5 Emergency Movement Without Drive Power
When the system is placed in emergency mode, push the arm or joint of the Manipulator by
hand as shown below:
Arm #1 Push the arm by hand.
Arm #2 Push the arm by hand.
Joint #3 The joint cannot be moved up/down by hand until the electromagnetic brake
applied to the joint has been released. Move the joint up/down while pressing
the brake release switch.
Joint #4 LS3-B Rotate the shaft by hand.
LS6-B The shaft cannot be rotated by hand until the electromagnetic brake
applied to the shaft has been released. Move the shaft while pressing
the brake release switch.
Joint #3, #4
brake release switch
Joint #1
(rotating)
Joint #2
(rotating)
Joint #3
(up and down)
Joint #4
(rotating)
Arm #1
Arm #2
Shaft
(Figure: LS6-B602S)
LS3-B: The brake release switch affects Joint #3 only. When the brake release switch is
pressed in emergency mode, the brake for Joints #3 is released. Be careful of the
shaft falling while the brake release switch is pressed because the shaft may be
lowered by the weight of an end effector.
LS6-B: The brake release switch affects both Joints #3 and #4. When the brake release
switch is pressed in emergency mode, the brake for both Joints #3 and #4 are
released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is pressed
because the shaft may be lowered by the weight of an end effector.
.
NOTE
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 11
1.6 ACCELS Setting for CP Motions
When operating the Manipulator in CP motion:
Acceleration/deceleration may be adjusted automatically depending on the tip load and
the Z-axis height to prevent damages of the ball screw spline.
ACCELS correction is performed by WEIGHT setting. If the Weight setting is not proper
for the tip load, the following problem occurs.
- Decline in the life and damage of the ball screw spline
Example:
Maximum value of ACCELS is corrected automatically depending on the Z-axis height.
The following is an example of values which are corrected per 100mm (Z-axis height).
Maximum ACCELS correction values by Z-axis height and tip load
LS3-B:
Z-axis height
(mm)
Tip load
3kg or less
0 >= Z >= - 150
25000 or less
LS6-B:
Z-axis height
(mm)
Tip load
4kg or less
6kg or less
0 >= Z >= - 150
25000 or less
25000 or less
- 150 > Z >= - 200
23000 or less
Z
Z-axis height 0
(Origin position)
I
f the Manipulator is operated in CP motion with the wrong set values, make sure to check
the following.
- Whether or not the ball screw spline shaft is deformed or bent
NOTE
Setup & Operation 1. Safety
12 LS3-B/LS6-B Rev.7
1.7 Warning Labels
The Manipulator has the following warning labels.
The warning labels are attached around the locations where specific dangers exist.
Be sure to comply with descriptions and warnings on the labels to operate and maintain the
Manipulator safely.
Do not tear, damage, or remove the warning labels. Use meticulous care when handling
those parts or units to which the following warning labels are attached as well as the nearby
areas.
Location Warning Label NOTE
A
Before loosening the base mounting screws,
hold the arm and secure it tightly with a band to
prevent hands or fingers from being caught in the
Manipulator.
B
Do not enter the operation area while the
Manipulator is moving. The robot arm may
collide against the operator. This is extremely
hazardous and may result in serious safety
problems.
C
Hazardous voltage exists while the Manipulator
is ON. To avoid electric shock, do not touch any
internal electric parts.
D
You can catch your hand or fingers between the
shaft and cover when bringing your hand close to
moving parts.
* Manipulators with bellows do not have this label
for no danger of your hand or fingers being
caught.
Location Signature label NOTE
E
Manipulator’s serial No.
Setup & Operation 1. Safety
LS
3-B/LS6-B Rev.7 13
LS3-B
(Figure: LS3-B401S)
LS6-B
(Figure: LS6-B602S)
Setup & Operation 2. Specifications
14 LS3-B/LS6-B Rev.7
2. Specifications
2.1 Features of LS3-B/LS6-B series Manipulators
The LS3-B/LS6-B series Manipulators are advanced manipulators pursuing high speed and
high cost-performance. The features of the LS3-B/LS6-B series Manipulators are as
follows:
Large capacity
U-axis allowable moment: LS3-B supports up to 0.05 kg·m
2
LS6-B supports up to 0.12 kg·m
2
Handle large loads stably by optimized control based on the each load.
Tac t time improvement by high-speed motion
It improves the tact time of long-range movements by readjusting the highest speed.
It improves the tact time of delicate movements by acceleration/deceleration speed
optimized for each payload and stop short technology.
Ethernet connector for camera cable is equipped by default
Ethernet connector is equipped on #2 arm and base of the manipulator by default.
Easier to equip a camera (option: Vision Guide) than the conventional models.
Simplify the connection and disconnection of M/C cable
Connect the M/C cable and the cable inside the manipulator with the connector.
Easy to connect and disconnect the M/C cable and easier to transport the manipulator
than the conventional models.
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 15
2.2 Model Number
LS6-B60 2 S
Environment
S
: Standard
C
: Cleanroom
Joint #3 stroke
1
: 150 mm : Standard-Model
: 120 mm : Cleanroom-Model (with bellows)
2
: 200 mm : Standard-Model
: 170 mm : Cleanroom-Model (with bellows)
Arm length
40 : 400 mm
50 : 500 mm
60
: 600 mm
70
: 700 mm
Payload
3 : 3 kg
6 : 6 kg
E
nvironment
Cleanroom-model
This model has additional features that reduce dust emitted by the Manipulator to
enable use in clean room environments.
For details on the specifications, refer to Setup & Operation: 2.4 Specifications.
Models
Payload Arm length Environment
Joint #3
stroke
Model
Number
3 kg 400 mm
Standard
150 mm
LS3-B401S
Cleanroom
120 mm
LS3-B401C
6 kg
500 mm
Standard
200 mm
LS6-B502S
Cleanroom
170 mm
LS6-B502C
600 mm
Standard
200 mm
LS6-B602S
Cleanroom
170 mm
LS6-B602C
700 mm
Standard
200 mm
LS6-B702S
Cleanroom
170 mm
LS6-B702C
Setup & Operation 2. Specifications
16 LS3-B/LS6-B Rev.7
2.3 Part Names and Outer Dimensions
2.3.1 LS3-B
Standard Model (LS3-B401S)
Joint #3
Brake release switch
Arm #1
Arm #2
Shaft
LED lamp
Signature label
(Serial No.
of Manipulator)
Signal cable
Power cable
Fittings (blue)
for ø4 mm
pneumatic tube
Fittings (blue)
for ø6 mm
pneumatic tube
Fittings (white)
for ø6 mm
pneumatic tube
User connector
(15-pin
D-sub connector)
Ethernet connector
- The brake release switch affects Joints #3. When the brake release switch is pressed in
emergency mode, the brake for Joint #3 is released.
- While the LED lamp is ON, current is being applied to the manipulator. Performing
any work with the power ON is extremely hazardous and it may result in electric shock
and/or improper function of the robot system. Make sure to turn OFF the controller
power before the maintenance work
NOTE
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 17
Standard Model (LS3-B401S)
Setup & Operation 2. Specifications
18 LS3-B/LS6-B Rev.7
Cleanroom Model (LS3-B401C)
The following figures show the additional parts and specifications for Cleanroom-model
when compared with the Standard-model in appearance.
Upper bellows
Lower bellows
Exhaust port
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 19
Cleanroom Model (LS3-B401C)
Setup & Operation 2. Specifications
20 LS3-B/LS6-B Rev.7
2.3.2 LS6-B
Standard-Model (LS6-B*02S)
Joint #3, #4
Brake release switch
Arm #1
Arm #2
Shaft
LED lamp
Signature label
(Serial No.
of Manipulator)
Signal cable
Power cable
Fittings (blue)
for ø4 mm pneumatic tube
Fittings (blue)
for ø6 mm
pneumatic tube
Fittings (white)
for ø6 mm
pneumatic tube
User connector
(15-pin
D-sub connector)
Ethernet connector
- The brake release switch affects both Joints #3 and #4. When the brake release switch
is pressed in emergency mode, the brakes for both Joint #3 and Joint #4 are released
simultaneously.
- While the LED lamp is ON, current is being applied to the manipulator. Performing
any work with the power ON is extremely hazardous and it may result in electric shock
and/or improper function of the robot system. Make sure to turn OFF the controller
power before the maintenance work.
NOTE
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 21
Standard Model (LS6-B*02S)
LS6-B502S
LS6-B602S
LS6-B702S
a
225
325
425
b
529
559
589
Setup & Operation 2. Specifications
22 LS3-B/LS6-B Rev.7
Cleanroom Model (LS6-B*02C)
The following figures show the additional parts and specifications for Cleanroom-model
when compared with the Standard-model in appearance.
Upper bellows
Lower bellows
Exhaust port
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 23
Cleanroom Model (LS6-B*02C)
LS6-B502C
LS6-B602C
LS6-B702C
a
225
325
425
b
529
559
589
Setup & Operation 2. Specifications
24 LS3-B/LS6-B Rev.7
2.4 Specifications
Item
LS3-B401*
LS6-B502*
LS6-B602*
LS6-B702*
Arm length
Arm #1+#2 400 mm 500 mm 600 mm 700 mm
Arm #1
225 mm
225 mm
325 mm
425 mm
Arm #2
175 mm
275 mm
Max. operating speed
*1
Joints #1+#2
7200 mm/s
7120 mm/s
7850 mm/s
8590 mm/s
Joint #3
1100 mm/s
1100 mm/s
Joint #4
2600°/s
2000°/s
Repeatability
Joints #1+#2
± 0.01 mm
± 0.02 mm
Joint #3
± 0.01 mm
± 0.01 mm
Joint #4
± 0.01°
± 0.01°
Payload (Load)
Rated
1 kg
2 kg
Max.
3 kg
6 kg
Joint #4 allowable
moment of inertia *2
Rated
0.005 kg·m
2
0.01 kg·m
2
Max.
0.05 kg·m
2
0.12 kg·m
2
Resolution
Joints #1 (°/pulse)
0.000439
0.000275
Joint #2 (°/pulse)
0.000439
0.000439
Joint #3 (°/pulse)
0.000799
0.000814
Joint #4 (°/pulse)
0.001927
0.001465
Hand
Shaft diameter
ø 16 mm
ø 20 mm
Through hole
ø 11 mm
ø 14 mm
Mounting hole
120
×
120 mm
135 × 120 mm
(Free choice of
either hole.)
150 × 150 mm
4-M8
Weight (cables not included)
14 kg (31 lbs.)
17 kg (37.5lbs.)
18 kg (39.7lbs.)
Driving method
All joints
AC servo motor
Motor
rated capacity
Joint #1
200 W
200 W
Joint #2
100 W
200 W
Joint #3
100 W
100 W
Joint #4
100 W
100 W
Option
Installation environment
Cleanroom *3
Joint #3 down force
100 N
Installed wire for customer use
15 (15 pin: D-sub)
Equivalent to 8 pin (RJ45) Cat.5e
Installed pneumatic
tube for customer use
2 pneumatic tubes (ø6 mm) : 0.59 MPa (6 kgf/cm
2
: 86 psi)
1 pneumatic tube (ø4 mm) : 0.59 MPa (6 kgf/cm
2
: 86 psi)
Environmental
requirements
Ambient Temp.
5 to 40 °C (with minimum temperature variation)
Ambient relative humidity
10 to 80% (no condensation)
Noise level *4
L
Aeq
= 70 dB (A) or under
Applicable Controller
RC90-B
Assignable Value
( ) Default values
Speed
1 ~ (4) ~ 100
1 ~ (5) ~ 100
Accel *5
1 ~ (10) ~ 120
1 ~ (10) ~ 120
SpeedS
1 ~ (50) ~ 2000
1 ~ (50) ~ 2000
AccelS
1 ~ (200) ~ 25000
1 ~ (200) ~ 25000
Fine
0 ~ (1250) ~ 65535
0 ~ (1250) ~ 65535
Weight
0,175 ~ (1,175) ~ 3,175
0,275 ~ (2,275) ~ 6,275
Setup & Operation 2. Specifications
LS
3-B/LS6-B Rev.7 25
Item
LS3-B401*
LS6-B502* LS6-B602* LS6-B702*
Safety standard
CE Marking
EMC Directive, Machinery Directive, RoHS Directive
KC Marking, KCs Marking
ANSI/RIA R15.06
NFPA 79
Item
LS3-B401S
LS3-B401C
LS6-B*02S
LS6-B*02C
Max.
motion range
Joint #1
± 132°
± 132°
Joint #2
± 141°
± 150°
Joint #3
150 mm
120 mm
200 mm
170 mm
Joint #4
± 360°
± 360°
Max.
pulse range
Joint #1
− 95574 ~ 505174
− 152918 ~ 808278
Joint #2
± 320854
± 341334
Joint #3
−187734 ~ 0
−150187 ~ 0
−245760 ~ 0
− 208896 ~ 0
Joint #4
± 186778
± 245760
*1: In the case of PTP command.
Maximum operating speed for CP command is 2000 mm/s on horizontal plane.
*2: In the case where the center of gravity is at the center of Joint #4.
If the center of gravity is not at the center of Joint #4, set the parameter using INERTIA setting.
*3: The exhaust system in the Cleanroom-model Manipulator draws air from the base interior and arm cover
interior together.
A crack or other opening in the base unit can cause loss of negative air pressure in the outer part of the arm,
which can cause increased dust emission.
Cleanliness level : Class ISO 4 (ISO14644-1)
Exhaust System : Exhaust port diameter : Inner diameter: ø12 mm
Exhaust tube : Polyurethane tube
Outer diameter: ø12 mm (Inner diameter: ø8 mm)
Recommended exhaust flow rate : approx. 1000 cm
3
/s (Normal)
*4: Conditions of Manipulator during measurement as follows:
Operating conditions : Under rated load, 4-joints simultaneous motion, maximum speed, maximum
acceleration/deceleration, and duty 50%.
Measurement point : Rear of the Manipulator, 1000 mm apart from the motion range, 50 mm above the
base-installed surface.
*5: In general use, Accel setting 100 is the optimum setting that maintains the balance of acceleration and
vibration when positioning. Although values larger than 100 can be set to Accel, it is recommended to
minimize the use of large values to necessary motions since operating the manipulator continuously with
the large Accel setting may shorten the product life remarkably.
Setup & Operation 2. Specifications
26 LS3-B/LS6-B Rev.7
2.5 How to Set the Model
The Manipulator model for your system has been set before shipment from the factory.
It is normally not required to change the model when you receive your system.
CAUTION
■
When you need to change the setting of the Manipulator model, be sure to set the
Manipulator model properly.
Improper setting of the Manipulator model may
result in
abnormal or no operation of the Manipulator and/or cause safety
problems.
If the custom specifications number (MT***) is described on MODEL of the signature label
(S/N label), the Manipulator has custom specifications. (A label with only the custom
specifications number may be attached depending on shipment time.)
The custom specifications may require a different configuration procedure; check the
custom specifications number (MT***) and contact the supplier of your region when
necessary.
The Manipulator model can be set from software.
Refer to the chapter Robot Configuration in the EPSON RC+ User’s Guide.
NOTE
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 27
3. Environments and Installation
3.1 Environmental Conditions
A suitable environment is necessary for the robot system to function properly and safely.
Be sure to install the robot system in an environment that meets the following conditions:
Item
Conditions
Ambient temperature
*
5 to 40°C (with minimum temperature variation)
Ambient relative humidity
10 to 80% (no condensation)
First transient burst noise
1 kV or less (Signal wire)
Electrostatic noise
4 kV or less
Environment · Install indoors.
· Keep away from direct sunlight.
· Keep away from dust, oily smoke, salinity, meta
l
pow
der or other contaminants.
· Keep away from flammable or corrosive solvents
and gases.
· Keep away from water.
· Keep away from shocks or vibrations.
· Keep away from sources of electric noise.
Manipulators are not suitable for operation in harsh environments such as painting areas, etc.
When using Manipulators in inadequate environments that do not meet the above conditions,
please contact the supplier of your region.
* The ambient temperature conditions are for the Manipulators only. For the Controller
the Manipulators are connected to, refer to the Controller manual.
Special Environmental Conditions
The surface of the Manipulator has general oil resistance. However, if your
requirements specify that the Manipulator must withstand certain kinds of oil, please
contact the supplier of your region.
Rapid change in temperature and humidity can cause condensation inside the Manipulator.
If your requirements specify that the Manipulator handles food, please contact the supplier
of your region to check whether the Manipulator will damage the food or not.
The Manipulator cannot be used in corrosive environments where acid or alkaline is used.
In a salty environment where the rust is likely to gather, the Manipulator is susceptible to
rust.
WARNING
■
Use an earth leakage breaker on the AC power cable of the
Controller to avoid
electric shock and circuit breakdown caused by
short circuit.
P
repare the earth leakage breaker that pertains the Controller you are using.
For details, refer to the
Controller manual.
CAUTION
■
When cleaning the Manipulator, do not rub it strongly with alcohol or
benzene.
It may lose luster on the coated face.
NOTE
Setup & Operation 3. Environments and Installation
28 LS3-B/LS6-B Rev.7
3.2 Base Table
A base table for anchoring the Manipulator is not supplied. Please make or obtain the base
table for your Manipulator. The shape and size of the base table differs depending on the
use of the robot system. For your reference, we list some Manipulator table requirements
here.
The base table must not only be able to bear the weight of the Manipulator but also be able
to withstand the dynamic movement of the Manipulator when it operates at maximum
acceleration/deceleration. Ensure that there is enough strength on the base table by
attaching reinforcing materials such as crossbeams.
The torque and reaction force produced by the movement of the Manipulator are as follows:
LS3-B
LS6-B
Max. reaction torque on the horizontal plate
250
N·m
350
N·m
Max. horizontal reaction force
1000
N
1700
N
Max. vertical reaction force
1000
N
1500
N
The threaded holes required for mounting the Manipulator base are M8. Use mounting
bolts with specifications conforming to ISO898-1 property class: 10.9 or 12.9.
For dimensions, refer to Setup & Operation: 3.3 Mounting Dimensions.
The plate for the Manipulator mounting face should be 20 mm thick or more and made of
steel to reduce vibration. The surface roughness of the steel plate should be 25 μm or less.
The table must be secured on the floor or wall to prevent it from moving.
The Manipulator must be installed horizontally.
When using a leveler to adjust the height of the base table, use a screw with M16 diameter
or more.
If you are passing cables through the holes on the base table, see the figures below.
Power Cable
Connector
Signal Cable
Connector
44
18
63
15
M/C Cables
(Unit : mm)
40
80
Do not remove the M/C cables from the Manipulator.
For environmental conditions regarding space when placing the Controller on the base table,
refer to the Controller manual.
WARNING
■
To ensure safety, a safeguard must be installed
for the robot system.
For details on the
safeguard, refer to the EPSON RC+ User’s Guide.
NOTE
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 29
3.3 Mounting Dimensions
The maximum space (R) includes the radius of the end effector. If it exceeds 60 mm, define
the radius as the distance to the outer edge of maximum space.
If a camera or solenoid valve extends outside of the arm, set the maximum range including
the space that they may reach.
Be sure to allow for the following extra spaces in addition to the space required for mounting
the Manipulator, Controller, and peripheral equipment.
Space for teaching
Space for maintenance and inspection
(Ensure a space to open the covers and plates for maintenance.)
Space for cables
The minimum bend radius of the power cable is 90 mm. When installing the cable, be sure
to maintain sufficient distance from obstacles. In addition, leave enough space for other
cables so that they are not bent forcibly.
Ensure distance to the safeguard from the maximum motion range is more than 100 mm.
Setup & Operation 3. Environments and Installation
30 LS3-B/LS6-B Rev.7
3.4 Unpacking and Transportation
THE INSTALLATION SHALL BE PREFORMED BY QUALIFIED INSTALLATION
PERSONNEL AND SHOULD CONFORM TO ALL NATIONAL AND LOCAL CODES.
WARNING
■
Only authorized personnel
should perform sling work and operate a crane and a
forklift. When
these operations are performed by unauthorized personnel, it is
extremely
hazardous and may result in serious bodily injury and/or severe
equipment damage to the robot system.
CAUTION
■
Using a cart or similar equipment, transport the Manipulator in the same manner
as it was delivered.
■
After
removing the bolts securing the Manipulator to the delivery equipment, the
Manipulator
can fall. Be careful not to get hands or fingers caught.
■
The arm is
secured with a wire tie. Leave the wire tie secured until you finish the
installation so as not to get hands or fingers caught
.
■
To carry the Manipulator, have two or more people to work on it and secure the
Manipulator to the
delivery equipment or hold the areas indicated in gray in the
figure (bottom of Arm #1 and bottom of the base) by hand.
When holding the bottom of the base by hand, be very careful not to get your
hands or fingers caught.
LS
3-B401*: approx. 14 kg : 31 lbs.
LS
6-B502*: approx. 17 kg : 37.5 lbs.
LS
6-B602*: approx. 17 kg : 37.5 lbs.
LS
6-B702*: approx. 18 kg : 39.7 lbs.
(Figure: LS6
-B)
■
Stabilize the Manipulator with your hands when hoist
ing it.
■
When transporting the Manipulator for a long distance, secure it to the delivery
equipment directly so that the Manipulator never falls.
If necessary, pack the Manipulator in the same style as
it was delivered.
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 31
3.5 Installation Procedure
CAUTION
■
The robot system
must be installed to avoid interference with buildings, structures,
utilities, other
machines and equipment that may create a trapping hazard or pinch
points.
■
Vibration
(resonance) may occur during operation depending on rigidity of the
installation table.
If the
resonance occurs, improve rigidity of the table or change the speed or
acceleration
and deceleration settings.
3.5.1 Standard-Model
CAUTION
■
Install the
Tabl e Top Mounting Manipulator with two or more people.
The Manipulator
weight are as follows. Be careful not to get hands, fingers, or feet
caught and/or have equipment damage
d by a fall of the Manipulator.
LS3-B401*: approx. 14 kg : 31 lbs.
LS6-B502*: approx. 17 kg : 37.5 lbs.
LS6-B602*: approx. 17 kg : 37.5 lbs.
LS6-B702*: approx. 18 kg : 39.7 lbs.
(1)
Secure the base to the base table
with four bo
lts.
Use bolts
with specifications
conforming
to ISO898-1 Property
C
lass: 10.9 or 12.9.
Tightening torque:
32.0 N·m (326 kgf·cm)
10 mm
Screw Hole
(depth 20 mm or more)
4-M8×25
Spring
W
asher
Plane Washer
(2)
Using nippers, cut off the wire tie
binding
the shaft and arm retaining
bracket on the
base.
Wire tie
Bolt: M4
Bolt
: M4
(3)
Remove the bolts
securing the wire
ties removed in step (2).
Remove the
protection sheet for
transportation which is attached to
the arm.
Make sure to remove the wire tie for protection of mechanical stop.
NOTE
NOTE
Setup & Operation 3. Environments and Installation
32 LS3-B/LS6-B Rev.7
3.5.2 Cleanroom-Model
(1) Unpack the Manipulator outside of the cleanroom.
(2) Secure the Manipulator to delivery equipment such as a pallet with bolts so that the
Manipulator does not fall over.
(3) Wipe off the dust on the Manipulator with a little alcohol or distilled water on a lint-
free cloth.
(4) Transport the Manipulator to the clean room.
(5) Refer to the installation procedure of each Manipulator model and install the
Manipulator.
(6) Connect an exhaust tube to the exhaust port.
3.6 Connecting the Cables
WARNING
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before
performing any replacement procedure, turn OFF the Controller and related
equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
■
Be sure to connect the cables properly. Do not allow unnecessary strain on the
cables. (Do not
put heavy objects on the cables. Do not bend or pull the cables
forcibl
y.) The unnecessary strain on the cables may result in damage to the
cables, disconne
ction, and/or contact failure.
Damaged cables, disconnection, or contact failure is extremely hazardous and may
result in electric shock and/or improper function of the r
obot system.
■
Grounding the manipulator is done by connecting with the controller. Ensure that
the controller is grounded and the cables are correctly connected. If the ground
wire is improperly connected to ground, it may result in the fire or elect
ric shock.
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 33
CAUTION
■
When connecting the Manipulator to the Controller, make sure that the serial
numbers on each equipment match. Improper connection between the Manipulator
and Controller may not only cause improper function of the robot system but also
serious safety problems. The connection method varies with the Controller used.
For details on the connection, refer to the Controller manual.
When the Manipulator is a Cleanroom-model, be aware of the followings.
For the Manipulator of Cleanroom-model, use it with an exhaust system.
For details, refer to Setup & Operation: 2.4 Specifications.
Cable Connections
Connect the power cable and the signal connector of the M/C cable to the Controller as
shown below.
Power connector
Signal connector
C
onnect and disconnect M/C cable
In LS3-B/LS6-B series, you can connect and disconnect the M/C cable to/from the
manipulator easily.
For details, refer to Maintenance: 4.3 Replacing M/C Cable.
NOTE
Setup & Operation 3. Environments and Installation
34
LS3-B/LS6-B Rev.7
3.7 User Wires and Pneumatic Tubes
C
AUTION
■
Only authorized or certified personnel should be allowed to perform wiring.
Wiring by unauthorized
or uncertified personnel may result in bodily injury and/or
malfunction of the robot system.
User electrical wires and pneumatic tubes are contained in the cable unit.
Electrical Wires
Rated Voltage
Allowable Current
Wires
Nominal Sectional Area
Note
AC/DC30 V
1 A
15
0.211 mm
2
Twist pair
WARNING
■
Do not apply the current more than 1A to the manipulator.
Mfr.
Standard
15 pin
Suitable Connector
JAE
DA-15PF-N
(Solder type)
Clamp Hood
JAE
DA-C8-J10-F2-1R
(Connector setscrew: #4-40 NC)
Pins with the same number, indicated on the connectors on both ends of the cables, are
connected.
Pneumatic Tubes
Max. Usable Pneumatic Pressure
Pneumatic Tubes
Outer Diameter × Inner Diameter
0.59 MPa (6 kgf/cm
2
: 86 psi)
2
ø 6 mm × ø 4 mm
1
ø 4 mm
×
ø 2.5 mm
Fittings for ø6 mm and ø4 mm (outer diameter) pneumatic tubes are supplied on both ends
of the pneumatic tubes.
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 35
LS3-B
Fitting (blue)
for ø4 mm pneumatic tube
Fitting (blue)
for ø6 mm pneumatic tube
User connector
(15-pin D-sub connector)
User connector
(15-pin D-sub
connector)
Fitting (white)
for ø6 mm pneumatic
tube
A
B
Joint #3 brake release switch
Fitting (white)
for ø6 mm pneumatic tube
Fitting (blue)
for ø6 mm pneumatic tube
Fitting (blue)
for ø4 mm pneumatic tube
Exhaust port
(Cleanroom-model only)
RJ45 connector
(
EtherNet
)
RJ45 connector
(
EtherNet
)
Detail view from A
Detail view from B
LS
6-B
Fitting (blue)
for ø4 mm pneumatic tube
Fitting (white)
for ø6 mm pneumatic tube
User connector
(15-pin D-sub connector)
User connector
(15-pin D-sub connector)
Fitting (blue)
for ø6 mm pneumatic tube
Detail view from A
A
B
Joint #3, #4 brake release switch
Fitting (white)
for ø6 mm pneumatic tube
Fitting (blue)
for ø6 mm pneumatic tube
Fitting (blue)
for ø4 mm pneumatic tube
Exhaust port
(Cleanroom-model only)
RJ45 connector
(
EtherNet
)
RJ45 connector
(
EtherNet
)
Detail view from B
Setup & Operation 3. Environments and Installation
36 LS3-B/LS6-B Rev.7
3.8 Relocation and Storage
3.8.1 Precautions for Relocation and Storage
Observe the following when relocating, storing, and transporting the Manipulators.
THE INSTALLATION SHALL BE PREFORMED BY QUALIFIED INSTALLATION
PERSONNEL AND SHOULD CONFORM TO ALL NATIONAL AND LOCAL CODES.
WARNING
■
Only authorized personnel
should perform sling work and operate a crane and a
forklift. When
these operations are performed by unauthorized personnel, it is
extremely
hazardous and may result in serious bodily injury and/or severe
equipment damage to the robot system.
CAUTION
■
Before relocating the Manipulator,
fold the arm and secure it tightly with a wire tie
to prevent hands or fingers from
being caught in the Manipulator.
■
When removing the anchor bolts, support the Manipulator to prevent falling.
Removing the
anchor bolts without support may result in a fall of the Manipulator,
and then get hands, fingers, or feet caught.
■
To
carry the Manipulator, have two or more people to work on it and secure the
Manipulator to the delivery
equipment or hold the shaded area (bottom of Arm #1
and the bottom of the
base) by hand. When holding the bottom of the base by
hand, be very careful not to get hands or fingers caught.
LS
3-B401*: approx. 14 kg : 31 lbs.
LS
6-B502*: approx. 17 kg : 37.5 lbs.
LS
6-B602*: approx. 17 kg : 37.5 lbs.
LS
6-B702*: approx. 18 kg : 39.7 lbs.
(Figure: LS6
-B)
■
Stabilize the Manipulator with your hands when hoist
ing it. Unstable hoisting is
extremely hazardous and may result in fall of the Manipulator.
When transporting the Manipulator for a long distance, secure it to the delivery
equipment so that the Manipulator cannot fall.
If necessary, pack the Manipulator in the same way as it was delivered.
When the Manipulator is used for a robot system again after long-term storage,
perform a test run to verify that it works properly, and then operate it thoroughly.
Transport and store the Manipulator in the range of −25 °C to +55 °C.
Humidity within 10% to 90% is recommended.
When condensation occurs on the Manipulator during transport or storage, turn
ON the power only after the condensation dries.
Do not shock or shake the Manipulator during transport.
Setup & Operation 3. Environments and Installation
LS
3-B/LS6-B Rev.7 37
3.8.2 Relocation
CAUTION
■
Install
or relocate the Manipulator with two or more people.
The Manipulator
weight
are as follows. Be careful not to get hands,
fingers, or feet caught and/or
have equipment damage
d by a fall of the Manipulator.
LS3-B401*: approx. 14 kg : 31 lbs.
LS6-B502*: approx. 17 kg : 37.5 lbs.
LS6-B602*: approx. 17 kg : 37.5 lbs.
LS6-B702*: approx. 18 kg : 39.7 lbs.
(1) Turn OFF the power on all devices and unplug the cables.
Remove the mechanical stops if using them to limit the motion range of Joints #1 and
#2. For details on the motion range, refer to Setup & Operation: 5.2 Motion Range
Setting by Mechanical Stops.
(2) Cover the arm with a sheet so that the arm will not be damaged.
Refer to the following figure and fix the arm.
Example of Arm Fixed Posture
Wire tie
Bolt: M4
Bolt
: M4
(Figure: LS6-B)
(3) Hold the bottom of Arm #1 by hand to unscrew the anchor bolts.
Then, remove the Manipulator from the base table.
NOTE
Setup & Operation 4. Setting of End Effectors
38 LS3-B/LS6-B Rev.7
4. Setting of End Effectors
4.1 Attaching an End Effector
Users are responsible for making their own end effector(s). Before attaching an end
effector, observe these guidelines.
CAUTION
■
If you use an end effector equipped with a gripper or chuck, connect wires and/or
pneumatic
tubes properly so that the gripper does not release the work piece
when the
power to the robot system is turned OFF. Improper connection of the
wires and/or pneuma
tic tubes may damage the robot system and/or work piece
as the work piece is released when the Emergency Stop switch is pressed.
I/O
outputs are configured at the factory so that they are automatically shut off (0)
by power disconnection, the
Emergency Stop switch, or the safety features of the
robot system
.
Shaft
-
Attach
an end effector to the lower end of the shaft.
For the shaft dimensions,
and the overall dimensions of the Manipulator, refer to Setup
& Operation: 2. Specifications.
-
Do not move
the upper limit mechanical stop on the lower side of the shaft.
Otherwise, when
“Jump motion”
is performed, the upper limit mechanical stop may hit
the Manipulator, and the robot system may not function properly.
-
Use a split muff coupling with an M4 bo
lt or larger to attach the end effector to the
shaft.
Brake release switch: LS3-B
- Joint #3 cannot be moved up/down by hand because the electromagnetic brake is applied
to the joint while power to the robot system is turned O FF.
This prevents the shaft from colliding with peripheral equipment in the case that the shaft
is lowered by the weight of the end effector when the power is disconnected during
operation, or when the motor is turned OFF even though the power is turned ON.
To move Joint #3 up/down while attaching an end effector, turn ON the Controller and
move the joint up/down while pressing the brake release switch.
Be careful of the shaft while the brake release switch is being pressed because the shaft
may be lowered by the weight of the end effector.
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 39
Brake release switch: LS6-B
-
Joint #3 and #4 cannot be moved up/down and rotated
by hand because the electromagnetic brake is applied
to the joint while power
to the robot system is turned
OFF.
This prevents the shaft from
colliding with peripheral
equipment in the case that the shaft is lowered
by the
weight of the end effector when
the power is
disconnected during operation,
or when the motor is
turned OFF even though the
power is turned ON.
To move Joint #3 up/down
or rotate Joint #4 while
attaching an end effector
, turn ON the Controller and
move the joint up/down
or rotate the joint while
pressing
the brake release switch.
This button
switch is a momentary-type; the brake is
released only while the button switch is being pressed
Brake release switch
Shaft may be lowered
by the weight of the
end effector.
-
Be careful of the shaft falling and rotating while the brake release switch is being
pressed because the shaft may be lowered by the weight of an end effector.
Layouts
-
When you operate the manipulator with an end effector, the end effector may interfere
with
the Manipulator because of the outer diameter of the end effector, the size of the
work piece
, or the position of the arms. When designing your system layout, pay
attention to the interference area of the end effector.
Setup & Operation 4. Setting of End Effectors
40 LS3-B/LS6-B Rev.7
4.2 Attaching Cameras and Valves
The bottom of the Arm #2 has threaded holes as shown in the figure below. Use these
holes for attaching cameras, valves, and other equipment.
[Unit: mm]
LS3-B
LS6-B
*: From base installation surface
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 41
4.3 Weight and Inertia Settings
To ensure optimum Manipulator performance, it is important to make sure that the load
(weight of the end effector and work piece) and moment of inertia of the load are within the
maximum rating for the Manipulator, and that Joint #4 does not become eccentric.
If the load or moment of inertia exceeds the rating or if the load becomes eccentric, follow
the steps below, “4.3.1Weight Setting” and “4.3.2 Inertia Setting” to set parameters.
Setting parameters makes the PTP motion of the Manipulator optimal, reduces vibration to
shorten the operating time, and improves the capacity for larger loads. In addition, it
reduces persistent vibration produced when the moment of inertia of the end effector and
work piece is larger than the default setting.
4.3.1 Weight Setting
CAUTION
■
The total weight o
f the end effector and the workpiece must not exceed LS3-B:
3kg, LS6
-B: 6 kg. The LS-B series Manipulators are not designed to work with
load
s exceeding LS3-B: 3kg, LS6-B: 6 kg. Always set the Weight parameters
according to the load. Setting a value that is smaller than the actual load may
cause errors, excessive shock and insufficient function of the Manipulator.
Also,
the life cycle of parts will shorten and belt tooth jumping
will occur which will lead
to potion shift.
The acceptable weight capacity (end effector and workpiece) in LS-B series is
LS3-B: Default rating: 1 kg Maximum: 3 kg
LS6-B: Default rating: 2 kg Maximum: 6 kg
When the load (weight of the end effector and work piece) exceeds the rating, change the
setting of Weight parameter.
After the setting is changed, the maximum acceleration/deceleration speed of the robot
system at PTP motion corresponding to the “Weight Parameter” is set automatically.
Load on the Shaft
The load (weight of the end effector and work piece) on the shaft can be set by Weight
parameter.
EPSON
RC+
Enter a value into the [Load inertia:] text box on the [Inertia] panel (
[Tools]-
[Robot
M
anager]). (You may also execute the Inertia command from the [Command Window].)
Setup & Operation 4. Setting of End Effectors
42 LS3-B/LS6-B Rev.7
Load on the Arm
When you attach a camera or other devices to the arm, calculate the weight as the equivalent
of the shaft. Then, add this to the load and enter the total weight to the Weight parameter.
Equivalent Weight Formula
When you attach the equipm
ent the rotation center of Joint #2:
When you attach the equipment to the end of Arm #2:
W
M
= M (L
1
)
2
/(L
1
+L
2
)
2
W
M
= M (L
M
)
2
/(L
2
)
2
W
M
M
L
1
L
2
L
M
:
equivalent weight
:
weight of camera etc.
:
length of Arm #1
:
length of Arm #2
:
distance from rotation center of Joint #2 to center of gravity
of camera etc.
<Example>
A “1
kg” camera is attached to the end of the LS6-B series arm (375
mm away from
the rotation center of Joint #2) with a load weight of “1 kg”.
M=1
L
2
=275
L
M
=375
W
M
=1×375
2
/275
2
=1.85 → 1.9 (round up)
W+W
M
=1+1.9=2.9
Enter
“2.9” for the Weight Parameter.
Shaft
Weight of
camera
M=1kg
W=1kg
L
2
=275 mm
L
M
=375 mm
Joint #2
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 43
Automatic speed setting by Weight
LS3-B
140
120
100
80
60
40
20
0 1 2 3 (kg) Weight setting
(%)
* The percentage in the graph
is based on the speed at
rated weight (1 kg) as 100%.
100
90
100
100
100
End effector
weight (kg)
Automatic speed setting
by Weight (%)
0
100
0.5
100
1
100
2
100
3
90
LS6-B
140
120
100
80
60
40
20
0 1 2 3 4 5 6 (kg) Weight setting
(%)
* The percentage in the graph
is based on the speed at
rated weight (2 kg) as 100%.
100
70
65
100 100
100
End effector
weight (kg)
Automatic speed setting
by Weight (%)
0
100
2
100
3
100
4
100
5
70
6
65
Setup & Operation 4. Setting of End Effectors
44 LS3-B/LS6-B Rev.7
Automatic acceleration/deceleration setting by Weight
LS3-B
140
120
100
80
60
40
20
0 1 2 3 (kg)
Weight setting
(%)
* The percentage in the graph
is based on the acceleration/
deceleration at rated weight
(1 kg) as 100%.
90
80
100
110 110
End effector
weight (kg)
Automatic acceleration/deceleration
setting by Weight (%)
0
110
0.5
110
1
100
2
90
3
80
LS6-B
140
120
100
80
60
40
20
0 1 2 3 4 5 6 (kg) Weight setting
(%)
* The percentage in the graph is
based on the acceleration/
deceleration at rated weight
(2 kg) as 100%.
100
92
85
80
75
110
End effector
weight (kg)
Automatic acceleration/deceleration setting
by Weight (%)
0
110
2
100
3
92
4
85
5
80
6
75
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 45
4.3.2 Inertia Setting
Moment of Inertia and the Inertia Setting
The moment of inertia is defined as “the ratio of the torque applied to a rigid body and its
resistance to motion”. This value is typically referred to as “the moment of inertia”,
“inertia”, or “GD
2
”. When the Manipulator operates with additional objects (such as an
end effector) attached to the shaft, the moment of inertia of load must be considered.
CAUTION
■
The
moment of inertia of the load (weight of the end effector and workpiece) must
be
LS3-B: 0.05 kg·m
2
, LS6-B: 0.12 kg·m
2
or less. The LS-B series Manipulators
are not designed to work with
a moment of inertia exceeding LS3-B: 0.05 kg·m
2
,
LS6
-B: 0.12 kg·m
2
.
Always set the Weight parameters according to the load. Setting a value that is
smaller than the actual load may cause errors, excessive shock and insufficient
function of the Manipulator. Also, the life cycle of parts is shortened and
positional
gap due to belt tooth bumping occurs.
The acceptable moment of inertia of load for a LS-B series Manipulator is
LS3-B: Default rating: 0.005 kg·m
2
Maximum: 0.05 kg·m
2
LS6-B: Default rating: 0.01 kg·m
2
Maximum: 0.12 kg·m
2
When the moment of inertia of the load exceeds the rating, change the setting of the moment
of inertia parameter of the Inertia command. After the setting is changed, the maximum
acceleration/deceleration speed of Joint #4 at PTP motion corresponding to the “moment of
inertia” value is set automatically.
Moment of inertia of load on the shaft
The moment of inertia of load (weight of the end effector and work piece) on the shaft can
be set by the “moment of inertia” parameter of the Inertia command.
EPSON
RC+
Enter a value into the [Load inertia:] text box on the [Inertia]
panel ([Tools]-
[Robot
M
anager]). (You may also execute the Inertia command from the [Command Window].)
Setup & Operation 4. Setting of End Effectors
46 LS3-B/LS6-B Rev.7
Automatic acceleration/deceleration setting of Joint #4 by Inertia (moment of inertia)
LS3-B
0 0.01 0.02 0.03 0.04 0.05 (kg·m
2
) Moment of inertia setting
120
100
80
60
40
20
(%)
100
60
40
20
Moment of inertia
setting (kg·m
2
)
Automatic acceleration/deceleration setting of
Joint #4 by Inertia (moment of inertia) (%)
0.005
100
0.01
60
0.02
40
0.05
20
LS6-B
0 0.02 0.04 0.06 0.08 0.10 0.12 (kg·m
2
)
Moment of inertia setting
120
100
80
60
40
20
(%)
100
60
30
15
Moment of inertia
setting (kg·m
2
)
Automatic acceleration/deceleration setting of
Joint #4 by Inertia (moment of inertia) (%)
0.01
100
0.02
60
0.08
30
0.12
15
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 47
Eccentric Quantity and the Inertia Setting
CAUTION
■
The
eccentric quantity of load (weight of the end effector and workpiece) must be
LS3
-B: 100mm, LS6-B: 150 mm or less. The LS-B series Manipulators are not
designed to work with
eccentric quantity exceeding LS3-B: 100mm, LS6-B: 150
mm
.
Always set the Weight p
arameters according to the load. Setting a value that is
smaller than the actual load may cause errors, excessive shock and insufficient
function of the Manipulator. Also, the life cycle of parts is shortened and
positional
gap due to belt tooth bumping occurs.
The acceptable eccentric quantity of load in LS-B series Manipulator:
LS3-B: default rating: 0 mm, maximum: 100 mm
LS6-B: default rating: 0 mm, maximum: 150 mm
When the eccentric quantity of load exceeds the rating, change the setting of eccentric
quantity parameter of Inertia command. After the setting is changed, the maximum
acceleration/deceleration speed of the Manipulator at PTP motion corresponding to the
“eccentric quantity” is set automatically.
Position of load’s center of gravity
Rotation center
Eccentric quantity (LS3-B:100mm or less
LS6-B: 150mm or less)
Eccentric Quantity
Eccentric quantity of load on the shaft
The eccentric quantity of load (weight of the end effector and work piece) on the shaft can
be set by “eccentric quantity” parameter of Inertia command.
EPSON
RC+
Enter a val
ue into the [Eccentricity:] text box on the [Inertia] panel ([Tools]-
[Robot
M
anager]). (You may also execute the Inertia command from the [Command Window].)
Setup & Operation 4. Setting of End Effectors
48 LS3-B/LS6-B Rev.7
Automatic acceleration/deceleration setting by Inertia (eccentric quantity)
LS3-B
* The percentage in the graph is
based on the acceleration /
deceleration at rated eccentricity
(0 mm) as 100%.
120
100
80
60
40
20
0 50 75 100 (mm)
Eccentricity setting
60
40
25
(%)
100
Eccentric quantity
parameter (mm)
Automatic acceleration/deceleration
setting by Inertia (eccentric quantity) (%)
0
100
50
60
75
40
100
25
LS6-B
* The percentage in the
graph is based on the
acceleration / deceleration
at rated eccentricity
(0 mm) as 100%.
120
100
80
60
40
20
0 50 100 150 (mm)
Eccentricity setting
70
30
20
(%)
100
Eccentric quantity
parameter (mm)
Automatic acceleration/deceleration
setting by Inertia (eccentric quantity) (%)
0
100
50
70
100
30
150
20
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 49
Calculating the Moment of Inertia
Refer to the following examples of formulas to calculate the moment of inertia of load (end
effector with work piece). The moment of inertia of the entire load is calculated by the
sum of each part (a), (b), and (c).
Workpiece (b)
Workpiece (c)
End effector (a)
Joint #3 shaft
Rotation center
Whole moment
of inertia
Moment of inertia
of end effector (a)
= +
Moment of inertia
of work piece (c)
+
Moment of inertia
of work piece (b)
T
he methods for calculating the moment of inertia for (a), (b), and (c) are shown below.
Calculate the total moment of inertia using the basic formulas.
(a)
M
oment of inertia of a rectangular parallelepiped
h
b
L
m
Rectangular parallelepiped’s center of gravity
Rotation center
m
+ m × L
2
b
2
+ h
2
12
(
b)
M
oment of inertia of a cylinder
m
+ m × L
2
r
2
2
m
L
r
Cylinder’s center of gravity
Rotation center
Setup & Operation 4. Setting of End Effectors
50 LS3-B/LS6-B Rev.7
(c) Moment of inertia of a sphere
m
r
2
+ m × L
2
2
5
Sphere’s center of gravity
r
m
L
Rotation center
4.4 Precautions for Auto Acceleration/Deceleration of Joint #3
When you move the Manipulator in horizontal PTP motion with Joint #3 (Z) at a high
position, the motion time will be faster.
When Joint #3 gets below a certain point, then auto acceleration/deceleration is used to
reduce acceleration/deceleration. (Refer to the figures below) The higher the position of
the shaft is, the faster the motion acceleration/deceleration is. However, it takes more time
to move Joint #3 up and down. Adjust the position of Joint #3 for the Manipulator motion
after considering the relation between the current position and the destination position.
The upper limit of Joint #3 during horizontal motion using Jump command can be set by the
LimZ command.
Automatic acceleration/deceleration vs. Joint #3 position
LS3-B
120
100
80
60
40
20
0 -50 -100 -150 (mm)
Shaft height
(%)
* Figures on the graph (%) are
the proportion to the
acceleration/deceleration speed
at the shaft upper limit position.
100
50
100
50
(LS3-B401C: Similarly changes until the shaft height -120mm)
When moving the Manipulator horizontally while the shaft is being lowered, it may cause
over-shoot at the time of final positioning.
Shaft height (mm)
Acceleration/Deceleration
0
100
−75
100
−120
50
−150
50
NOTE
Setup & Operation 4. Setting of End Effectors
LS
3-B/LS6-B Rev.7 51
LS6-B
120
100
80
60
40
20
0 -100 -200 (mm)
Shaft height
(%)
* Figures on the graph (%) are the
pr
oportion to th
e
ac
celeration/deceleration speed
at the shaft upper limit position.
100
45
100
(L
S6-B*02C: Similarly changes until the shaft height -170mm.)
When moving the Manipulator horizontally while the shaft is being lowered, it may cause
over-shoot at the time of final positioning.
Shaft height (mm)
Acceleration/Deceleration
0
100
−100
100
−200
45
NOTE
Setup & Operation 5. Motion Range
52 LS3-B/LS6-B Rev.7
5. Motion Range
CAUTION
■
When setting up the motion range for safety, both the pulse range and
mechanical stops must always be set at the same time.
The motion range is preset at the factory as explained in Setup & Operation: 5.4 Standard
Motion Range. That is the maximum motion range of the Manipulator.
There are three methods for setting the motion range described as follows:
1. Setting by pulse range (for all joints)
2. Setting by mechanical stops (for Joints #1 to #3)
3. Setting the Cartesian (rectangular) range in the X, Y coordinate system of the
Manipulator (for Joints #1 and #2)
Mechanical
stop
Rectangular range setting
Pulse range
Motion range
Mechanical
stop
When the motion range is changed due to layout efficiency or safety, follow the descriptions
in 5.1 through 5.3 to set the range.
5.1 Motion Range Setting by Pulse Range
Pulses are the basic unit of Manipulator motion. The motion range of the Manipulator is
controlled by the pulse range between the pulse lower limit and upper limit of each joint.
Pulse values are read from the encoder output of the servo motor.
For the maximum pulse range, refer to the following sections.
The pulse range must be set inside of the mechanical stop range.
5.1.1 Max. Pulse Range of Joint #1
5.1.2 Max. Pulse Range of Joint #2
5.1.3 Max. Pulse Range of Joint #3
5.1.4 Max. Pulse Range of Joint #4.
Once the Manipulator receives an operating command, it checks whether the target position
specified by the command is within the pulse range before operating. If the target position
is out of the set pulse range, an error occurs and the Manipulator does not move.
The pulse range can be set on the [Range] panel shown by selecting [Tools]
-[Robot
Manager]. (You may also execute the Range command from the [Command Window].)
EPSON
RC+
NOTE
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 53
5.1.1 Max. Pulse Range of Joint #1
The 0 (zero) pulse position of Joint #1 is the position where Arm #1 faces toward the positive
(+) direction on the X-coordinate axis.
When the 0 pulse is a starting point, the counterclockwise pulse value is defined as the
positive (+) and the clockwise pulse value is defined as the negative (-).
+Y
+X 0 pulse
+ B
− B
+ A
− A
A: Max. Motion Range
B: Max. Pulse Range
LS3-B
± 132°
−
95574 ~ 505174 pulse
LS6-B
− 152918 ~ 808278 pulse
5.1.2 Max. Pulse Range of Joint #2
The 0 (zero) pulse position of Joint #2 is the position where Arm #2 is in-line with Arm #1.
With the 0 pulse as a starting point, the counterclockwise pulse value is defined as the
positive (+) and the clockwise pulse value is defined as the negative (-).
− B
+ B
0 pulse
− A
+ A
A: Max. Motion Range
B: Max. Pulse Range
LS3-B
± 141° ±
320854 pulse
LS6-B
± 150° ± 341334 pulse
Setup & Operation 5. Motion Range
54 LS3-B/LS6-B Rev.7
5.1.3 Max. Pulse Range of Joint #3
The 0 (zero) pulse position of Joint #3 is the position where the shaft is at its upper limit.
The pulse value is always negative because Joint #3 always moves lower than the 0 pulse
position.
Upper limit: 0 pulse
Joint #3 Stroke Lower Limit Pulse
LS3-B401S (Standard-model)
150 mm
−
187734 pulse
LS3-B401C (Cleanroom-model)
120 mm
−
150187 pulse
LS6-B*02S (Standard-model)
200 mm
− 245760 pulse
LS6-B*02C (Cleanroom-model)
170 mm
− 208896 pulse
For the Cleanroom-model, the motion range set with the Joint #3 mechanical stop cannot be
changed.
5.1.4 Max. Pulse Range of Joint #4
The 0 (zero) pulse position of Joint #4 is the position where the flat near the end of the shaft
faces toward the end of Arm #2. With the 0 pulse as a starting point, the counterclockwise
pulse value is defined as the positive (+) and the clockwise pulse value is defined as the
negative (-).
+X
+Y
Clockwise (-value)
Counterclockwise (+value)
A: Max. Motion Range
B: Max. Pulse Range
LS3-B
± 360°
0 ± 186778 pulse
LS6-B
0 ± 245760 pulse
NOTE
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 55
5.2 Motion Range Setting by Mechanical Stops
Mechanical stops physically limit the absolute area that the Manipulator can move.
Both Joints #1 and #2 have threaded holes in the positions corresponding to the angle for
the mechanical stop settings. Install the bolts in the holes corresponding to the angle that
you want to set.
Joints #3 can be set to any length less than the maximum stroke.
Mechanical stop of Joint #2
(Fixed)
Mechanical stop of Joint #1
(Adjustable)
Mechanical stop of Joint #3
(Lower limit mechanical stop)
(Do not move the
position of upper limit
mechanical stop.)
Mechanical stop of
Joint #1 (Fixed)
Mechanical stop of
Joint #2 (Adjustable)
Setup & Operation 5. Motion Range
56 LS3-B/LS6-B Rev.7
5.2.1 Setting the Mechanical Stops of Joints #1 and #2
Both Joints #1 and #2 have threaded holes in the positions corresponding to the angle for
the mechanical stop settings. Install the bolts in the holes corresponding to the angle that
you want to set.
Install the bolts for the mechanical stop to the following position.
Views from the bottom of Arm #1
a
b
Joint #1 Mechanical Stops
a
b
LS3-B
Setting Angle (°)
110
−
110
Pulse Value (pulse)
455111
−
45511
LS6-B
Setting Angle (°)
115
−
115
Pulse Value (pulse)
746382
−
91022
Views from the top of Arm #1
b
a
Joint #2 Mechanical Stops
a
b
LS3-B
LS6-B
Setting Angle (°)
125
−
125
Pulse Value (pulse)
284444
−
284444
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 57
(1)
Turn OFF the
Controller.
(2)
Install
a hexagon socket head cap bolt into the hole corresponding to the setting angle,
and
tighten it.
Joint
Hexagon socket head cap
bolt (fully threaded)
The number
of bolts
Recommended
tightening torque
1
M8 × 10
1 bolt / side
12.3 N⋅m (125 kgf⋅cm)
(3)
Turn ON the
Controller.
(4)
Set the pulse range corresponding to the new positions of the mechanical stops.
Be sure to set the pulse range
inside the positions of the mechanical stop range.
Example:
LS6-B602S
The angle of Joint #1 is set from −110° to +110°.
The angle of Joint #2 is set from −110° to +110°.
Execute the following command
s from the [Command Window].
>JRANGE 1, -72817, 728177 ' Sets the pulse range of Joint #1
>JRANGE 2,-250311, 250311 ' Sets the pulse range of Joint #2
>RANGE ' Checks the setting using Range
-72817, 728177, -250311, 250311, −245760 ,0,
-245760, 245760
(5)
Move the arm by hand until it touches the mechanical stops, and make sure that the arm
does
not hit any peripheral equipment during operation.
(6)
O
perate the joint changed at low speeds until it reaches the positions of the
minimum
and
maximum pulse range.
Make sure that the arm does not hit the mechanical stops.
(Check the
position of the mechanical stop and the motion range you set.)
Example
: Using LS6-B602S
The angle of Joint #1 is set from −110° to +110°.
The angle of Joint #2 is set from −110° to +110°.
Execute the following command
s from the [Command Window].
>MOTOR ON ' Turns ON the motor
>POWER LOW ' Enters low-power mode
>SPEED 5 ' Sets at low speeds
>PULSE -72817,0,0,0 ' Moves to the min. pulse position of Joint #1
>PULSE 72817,0,0,0 ' Moves to the max. pulse position of Joint #1
>PULSE 327680,-250311,0,0 ' Moves to the min. pulse position of Joint #2
>PULSE 327680, 250311,0,0 ' Moves to the max. pulse position of Joint #2
The Pulse command (Go Pulse command) moves
all joints to the specified positions
at
the same time.
Specify safe positions after considering motion of not only the joints
whose pulse range have been changed, but also other joints
.
In this example, Joint #1 is moved to
0° position where is close to the
center of its
mot
ion range (pulse value: 327680*) when checking Joint #2.
If the arm
is hitting the mechanical stop
s or if an error occurs after the arm hits the
mechanical stops
, either
reset the pulse range to a narrower setting or extend the
position
s of the mechanical stops within the limit.
*:
For LS6-B (For LS3-B, pulse value: 20480)
EPSON
RC+
EPSON
RC+
NOTE
Setup & Operation 5. Motion Range
58 LS3-B/LS6-B Rev.7
5.2.2 Setting the Mechanical Stop of Joint #3
This method applies only to the Standard-model manipulator.
For the Cleanroom-model
, the motion range set with the Joint #3 mechanical stop cannot be
changed.
(1)
Turn ON the Controller and turn OFF the motors using the Motor OFF command.
(2)
Push up the shaft while pressing the brake release
switch.
Do not push the shaft up to its upper limit or it will
be difficult for the arm top cover to be removed.
Push the shaft up to a position where the Joint #3
mechanical stop can be changed.
Lower limit mechanical
stop screw: M4×15
Brake release switch
Shaft
When you press
the brake release switch, the shaft may lower due to the weight of the
end effector. Be sure to hold the shaft by hand while pressing the button.
(3)
Turn OFF the
Controller.
(4)
Loosen the lower limit mechanical stop screw
(M4×15).
A mechanical stop is
mounted on both the top and bottom of Joint #3. However,
only the position of the lower limit mechanical stop on
the top can be changed
Do not remove the upper limit mechanical stop on the bottom because the calibration
point of Joint #3 is specified using the stop.
(5)
The upper end of the shaft
defines the maximum stroke.
Move the lower limit mechanical stop down by the length
you want to limit the stroke.
For example, when the lower limit mechanical stop is set at
“
200 mm” stroke, the lower limit Z coordinate value is
“
−200”. To change the value to “−180”, move the lower
limit mechanical stop down
“20 mm”. Use calipers to
measure the distance when
adjusting the mechanical stop.
Measure this
distance
(6)
Firmly tighten the lower limit mechanical stop screw
(M4×15).
Recommended tightening torque:
5.4N⋅m (55 kgf⋅cm)
(7)
Turn ON the
Controller.
(8)
Move
Joint #3 to its lower limit while pressing the brake release switch, and
then check
the lower
limit position. Do not lower the mechanical stop too far
. Otherwise, the
joint
may not reach a target position.
NOTE
NOTE
NOTE
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 59
(9)
Calculate the lower limit pulse
value of the pulse range using the formula
shown below
and set the value.
T
he result of the calculation is always negative because t
he lower limit Z coordinate
value
is negative.
Lower limit of pulse
(pulse)
= lower limit Z coordinate value (mm) / Resolution (
mm/pulse)
** For the Joint #3 resolution,
refer to the section Setup & Operation 2.4 Specifications.
Execute the following command from the [Command Window].
Enter the
calculated value in X.
>JRANGE 3,X,0 ' Sets the pulse range of Joint #3
(10)
Using the
Pulse command (Go Pulse command), move
Joint #3 to the lower limit
position of the pulse range at low speed.
If the mechanical stop range is less
than
the pulse range, Joint #3
will hit the mechanical stop and an error will occur.
When
the error occurs, either change
the pulse range to a lower setting
or extend the position
of the mechanical stop within the limit.
If it is difficult to check whether Joint #3 hits a mechanical stop, turn OFF the Controller
and lift the arm top cover to check the condition causing the problem from the side.
Execute the following commands from the [Command Window].
Enter the value
calculated in Step (9) in X.
>MOTOR ON
' Turns ON the motor
>SPEED 5
' Sets low speed
>PULSE 0,0,
X,0 ' Moves to the lower limit-pulse position of Joint #3.
(In this example, all pulses except those for Joint #3 are “0”. S
ubstitute
these “0s” with the other pulse values specifying a position where there
is
no interference even when lowering Joint #3.)
5.3 Setting the Cartesian (Rectangular) Range in the XY
Coordinate System of the Manipulator
(for Joints #1 and #2)
Use this method to set the upper and lower limits of the X and Y coordinates.
This setting is only enforced by software. Therefore, it does not change the physical range.
The maximum physical range is based on the position of the mechanical stops.
Set the XYLim setting on the [XYZ Limits] panel shown by
selecting [Tools]-
[Robot
Manager].
(You may also execute the XYLim command from the [Command Window].)
EPSON
RC+
EPSON
RC+
EPSON
RC+
NOTE
Setup & Operation 5. Motion Range
60 LS3-B/LS6-B Rev.7
5.4 Standard Motion Range
The following “motion range” diagrams show the standard (maximum) specification.
When each Joint motor is under servo control, the center of Joint #3’s (shaft’s) lowest point
moves in the areas shown in the figure.
“Area limited by mechanical stop” is the area where the center of Joint #3’s lowest point
can be moved when each joint motor is not under servo control.
“Mechanical stop” sets the limited motion range so that the center of Joint #3 cannot move
beyond the area mechanically.
“Maximum space” is the area that contains the farthest reach of the arms. If the maximum
radius of the end effector is over 60 mm, add the “Area limited by mechanical stop” and
“radius of the end effector”. The total value is specified as the maximum area.
A
Center of Joint #3
B
Motion range
C
Maximum range
D
Base mounting face
E
Area limited by a mechanical stop
LS3-B401*
LS6-B502*
LS6-B602*
LS6-B702*
a
Arm #1 + Arm #2 length [mm]
400
500
600
700
b
Arm #1 length [mm]
175
225
325
425
c
Arm #2 length [mm]
225
275
d
Joint #1 motion angle [°]
132
132
e
Joint #2 motion angle [°]
141
150
f
(Motion range)
141.6
138.1
162.6
232
g
(Motion range at the rear)
325.5
425.6
492.5
559.4
h
Angle of the Joint #1 mechanical stop [°]
2.8
2.8
i
Angle of the Joint #2 mechanical stop [°]
4.2
4.2
j
(Mechanical stop area)
128.8
121.8
142.5
214
k
(Mechanical stop area at the rear)
333.5
433.5
504
574.5
m (Joint #3 motion range)
Standard
150
200
Cleanroom
120
170
n
(Distance from the base
mounting face)
Standard
5.5
51
Cleanroom
9.5
53
p
(Joint #3 mechanical stop
area upper end)
Standard
6.5
10
Cleanroom
10.5
6
q
(Joint #3 mechanical stop
area lower end)
Standard
6.5
11.8
Cleanroom
10.5
9.8
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 61
Standard Model
Cleanroom Model
Setup & Operation 5. Motion Range
62 LS3-B/LS6-B Rev.7
Standard Model LS6-B*02S
Setup & Operation 5. Motion Range
LS
3-B/LS6-B Rev.7 63
Cleanroom Model LS6-B*02C
Setup & Operation 5. Motion Range
64 LS3-B/LS6-B Rev.7
Maintenance
T
his volume contains maintenance procedures with safety precautions
for LS3-B/LS6-B series Manipulators.
Maintenance 1. Safety Maintenance
LS
3-B/LS6-B Rev.7 67
1. Safety Maintenance
Please read this chapter, this manual, and other relevant manuals carefully to understand
safe maintenance procedures before performing any routine maintenance.
Only authorized personnel who have taken safety training should be allowed to
maintain the robot system.
Safety training is the program for industrial robot operators that follows the laws
and regulations of each nation.
The personnel who have taken safety training acquire knowledge of industrial
robots (operations, teaching, etc.), knowledge of inspections, and knowledge of
related rules/regulations.
The personnel who have completed the robot system-training and maintenance-
training classes held by the manufacturer, dealer, or locally-incorporated company
are allowed to maintain the robot system.
WARNING
■
Do not
remove any parts that are not covered in this manual. Follow the
maintenance procedure strictly as described in this manual. Improper removal
of parts or
improper maintenance may not only cause improper function of the
robot system but also serious safety pr
oblems.
■
Keep away from the Manipulator while
the power is ON if you have not taken the
training courses.
Do not enter the operating area while the power
is ON.
Entering the operating area with the power ON is extremely hazardous and may
cause
serious safety problems as the Manipulator may move even it seems to be
stopped
.
■
When you check the operation of the Manipulator a
fter replacing parts, be sure to
check it
while you are outside of the safeguarded area. Checking the operation
of the Manipulator while you are inside of the safeguarded area may cause serious
safety problems as the Manipulator may move unexpectedly.
■
Before
operating the robot system, make sure that both the Emergency Stop
switches and safeguard switch function properly.
Operating the robot system
when the switches do not function properly is extremely hazardous and may result
in serious bodily injury and/or serious damage
to the robot system as the switches
cannot fulfill
their intended functions in an emergency.
W
ARNING
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
Maintenance 2. General Maintenance
68 LS3-B/LS6-B Rev.7
CAUTION
■
Be sure to connect the cables properly.
Do not allow unnecessary strain on the
cables. (Do not
put heavy objects on the cables. Do not bend or pull the cables
forcibl
y.) The unnecessary strain on the cables may result in damage to the
cables,
disconnection, and/or contact failure. Damaged cables, disconnection,
or contact failure is extremely hazardous and may result in electric shock and/or
improper function of the robot system.
2. General Maintenance
This chapter describes maintenance inspections and procedures. Performing maintenance
inspections and procedures properly is essential for preventing trouble and ensuring safety.
Be sure to perform the maintenance inspections in accordance with the schedule.
2.1 Maintenance Inspection
2.1.1 Schedule for Maintenance Inspection
Inspection points are divided into five stages: daily, monthly, quarterly, biannual, and annual.
The inspection points are added every stage.
If the Manipulator is operated for 250 hours or longer per month, the inspection points must
be added every 250 hours, 750 hours, 1500 hours, and 3000 hours operation.
Inspection Point
Daily
inspection
Monthly
inspection
Quarterly
inspection
Biannual
inspection
Annual
inspection
Overhaul
(replacement)
1 month (250 h)
Inspect every day
√
2 months (500 h)
√
3 months (750 h)
√
√
4 months (1000 h)
√
5 months (1250 h)
√
6 months (1500 h)
√
√
√
7 months (1750 h)
√
8 months (2000 h)
√
9 months (2250 h)
√
√
10 months (2500 h)
√
11 months (2750 h)
√
12 months (3000 h)
√
√
√
√
13 months (3250 h)
√
…
…
…
…
…
…
…
20000 h
√
h = hour
Maintenance 2. General Maintenance
LS
3-B/LS6-B Rev.7 69
2.1.2 Inspection Point
Inspection While the Power is OFF (Manipulator is not operating)
Inspection Point Inspection Place Daily Monthly
Quarterly
Biannual Annual
Check looseness or backlash of
bolts, screws.
Tighten them if necessary.
(For the tightening torque, refer to
Maintenance: 2.4 Tightening
Hexagon Socket Head Cap Bolts.)
End effector mounting bolts
√
√
√
√
√
Manipulator mounting bolts
√
√
√
√
√
Each arm locking bolts
√
√
√
√
√
Bolts, screws around shaft
√
Bolts, screws securing motors
,
reduction gear units, etc.
√
Check looseness of connectors.
If the connectors are loosen, push it
securely or tighten.
External connectors on
Manipulator (on the connector
plates etc.)
√ √ √ √ √
Manipulator cable unit
√
√
√
√
Visually check for external defects.
Clean up if necessary.
External appearance of
Manipulator
√ √ √ √ √
External cables
√
√
√
√
Check for bends or improper
location. Repair or place it properly
if necessary.
Safeguard etc. √ √ √ √ √
Check tension of timing belts.
Tighten it if necessary.
Inside of Arm #2 √ √
Grease conditions
Refer to Maintenance: 2.3 Greasing.
Inspection While the Power is ON (Manipulator is operating)
Inspection Point
Inspection Place
Daily
Monthly
Quarterly
Biannual
Annual
Check motion range
Each joint
√
Check whether unusual sound or
vibration occurs.
Whole √ √ √ √ √
Measure the accuracy repeatedly by
a gauge.
Whole √
Turn ON and OFF the brake release
switch and check the sound of the
electromagnetic brake. If there is
no sound, replace the brake.
Brake √ √ √ √ √
Maintenance 2. General Maintenance
70 LS3-B/LS6-B Rev.7
2.2 Overhaul (Parts Replacement)
CAUTION
■
Overhaul timing is based on an assumption that all joints are operated for equal
distance. If a particular joint has a
high duty or high load, it is recommended to
overhaul all joints (as many as possible) before exceeding 20,000 operation hours
with the joint as a basis.
The parts for the manipulator joints may cause accuracy decline or malfunction due to
deterioration of the manipulator resulting from long term use. In order to use the
manipulator for a long term, it is recommended to overhaul the parts (parts replacement).
The time between overhauls is 20,000 operation hours of the Manipulator as a rough
indication.
However, it may vary depending on usage condition and degree of the load (such as when
operated with the maximum motion speed and maximum acceleration / deceleration in
continuous operation) applied on the Manipulator.
Recommended replacement time for the parts subject to maintenance (motors, reduction
gear units, and timing belts) can be checked in the [Maintenance] dialog box of the
EPSON RC+ 7.0.
For details, refer to the following manual.
Robot Controller RC90 /RC90-B Maintenance 6. Alarm
Note:
The recommended replacement time for the maintenance parts is when it reaches the L10
life (time until 10% failure probability). In the [Maintenance] dialog box, the L10 life is
displayed as 100%.
NOTE
Maintenance 2. General Maintenance
LS
3-B/LS6-B Rev.7 71
The manipulator operation hours can be checked in [Controller Status Viewer] dialog -
[Motor On Hours].
(1) Select EPSON RC+ menu-[Tools]-[Controller] to open the [Controller Tools] dialog.
(2) Click the <View Controller Status> button to open the [Browse For Folder] dialog.
(3) Select the folder where the information is stored.
(4) Click <OK> to view the [Controller Status Viewer] dialog.
(5) Select [Robot] from the tree menu on the left side.
For the parts subject to overhaul, refer to Maintenance 14. Maintenance Parts List.
For details of replacement of each part, refer to the Maintenance section.
Please contact the supplier of your region for further information.
Maintenance 2. General Maintenance
72 LS3-B/LS6-B Rev.7
2.3 Greasing
The ball screw spline and reduction gear units need greasing regularly. Only use the grease
specified in the following table.
CAUTION
■
Keep enough grease in the Manipulator.
Operating the Manipulator with
insufficient
grease will damage sliding parts and/or result in insufficient function of
the Manipulator
. Once the parts are damaged, a lot of time and money will be
required for the repairs.
CAUTION
■
If grease gets into your eyes, mouth, or on your skin, follow the instructions below.
If grease gets into your eyes
: Flush them thoroughly with clean water, and then see a doctor
immediately.
If grease gets into your mouth
: If swallowed, do not induce vomiting. See a doctor immediately.
: If grease just gets into your mouth, wash out your mouth with water
thoroughly.
If grease gets on your skin
: Wash the area thoroughly with soap and water.
Greasing part
Greasing Interval
Grease
Refer to Maintenance:
Joint #1
Reduction gear units Overhaul timing
SK-1A
5 Joint #1
Joint #2
LS3-B: SK-2
LS6-B: SK-1A
6 Joint #2
Joint #3 Ball screw spline unit
At 100 km of operation
(50 km for first greasing)
AFB
10. Ball Screw Spline
Unit
Joint #1, 2 reduction gear units
As a rough indication, perform greasing at the same timing as overhaul.
However, it may vary depending on usage condition and degree of the load (such as when
operated with the maximum motion speed and maximum acceleration / deceleration in
continuous operation) applied on the Manipulator.
Joint #3 Ball screw spline unit
The recommended greasing interval is at 100 km of operation. However, greasing timing
also can be checked from the grease condition. Perform greasing if the grease is
discolored or becomes dry.
Normal grease Discolored grease
Perform greasing at 50 km of operation for the first time of greasing.
Recommended replacement time for the grease on the ball screw spline unit can be
checked in the [Maintenance] dialog box of the EPSON RC+ 7.0.
For details, refer to the following manual.
Robot Controller RC90 / RC90-B Maintenance 6. Alarm
NOTE
Maintenance 2. General Maintenance
LS
3-B/LS6-B Rev.7 73
2.4 Tightening Hexagon Socket Head Cap Bolts
Hexagon socket head cap bolts are used in places where mechanical strength is required.
(A hexagon socket head cap bolt will be called a “bolt” in this manual.) These bolts are
fastened with the tightening torques shown in the following table.
When it is necessary to refasten these bolts in some procedures in this manual (except special
cases as noted), use a torque wrench so that the bolts are fastened with the appropriate
tightening torques as shown below.
Bolt
Tightening Torque
Refer below for the set screw.
M2.5
1.4 ± 0.1 N⋅m
(14 ± 1 kgf⋅cm)
Bolt
Tightening Torque
M3
2.0 ± 0.1 N⋅m
(21
± 1 kgf⋅cm)
M3
0.7 ± 0.1 N⋅m
(7.1 ± 1
kgf⋅cm)
M4
4.0 ± 0.2 N⋅m
(41 ± 2 kgf⋅cm)
M4
2.4 ± 0.1 N⋅m
(26 ± 1 kgf⋅cm)
M5
8.0 ± 0.4 N⋅m
(82 ± 4 kgf⋅cm)
M5
3.9 ± 0.2 N⋅m
(40 ± 2 kgf⋅cm)
M6
13.0 ± 0.6 N⋅m
(133 ± 6 kgf⋅cm)
M8
32.0 ± 1.6 N⋅m
(326 ± 16 kgf⋅cm)
M10
58.0 ± 2.9 N⋅m
(590 ± 30 kgf⋅cm)
M12
100.0 ± 5.0 N⋅m
(1,020 ± 51 kgf⋅cm)
The bolts aligned on a circumference should be fastened in a crisscross pattern as shown in
the figure below.
1
5
3
7
2
6
4
8
Bolt hole
Do not fasten all bolts securely at one time. Divide
the number of times that the bolts are fastened into
two or three and fasten the bolts securely with a
hexagonal wrench. Then, use a torque wrench so
that the bolts are fastened with tightening torques
shown in the table above.
2.5 Matching Origins
After parts have been replaced (motors, reduction gear units, a brake, timing belts, a ball
screw spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
For calibration, the pulse values for a specific position must be recorded in advance.
Before replacing parts, select easy point (pose) data from the registered point data to check
the accuracy. Then, follow the steps below to display the pulse values and record them.
Execute the following command from the [Command
Window].
>PULSE
PULSE: [Joint #1 Pulse value] pls [Joint #2 Pulse value] pls
[Joint #3 Pulse value]
pls [Joint #4 Pulse value] pls
EPSON
RC+
Maintenance 2. General Maintenance
74 LS3-B/LS6-B Rev.7
2.6 Layout of Maintenance Parts
Standard-model
Power cable
Cable unit
Joint #3 brake
Signal cable
Brake release
switch
LED lamp
Ball screw
spline unit
Arm Top Cover
Joint #4 motor
Z belt
U2 belt
U1 belt
Joint #2 motor
Joint #2
reduction gear
unit
Joint #1
reduction gear unit
Joint #1 motor
Joint #3 motor
Control board
Arm Bottom Cover
Joint #4
brake*
Intermediate
pulley
Converter board
*: Joint #4 brake (LS6-B only)
Cleanroom-model (with optional bellows)
For the Cleanroom-model, the following parts are added to the Standard-model.
Bellows
Bellows
Clamp Band
Clamp Band
Clamp Band
Maintenance 3. Covers
LS
3-B/LS6-B Rev.7 75
3. Covers
All procedures for removing and installing covers in maintenance are described in this chapter.
WARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with the
power ON is extremely hazardous and may result
in serious bodily injury as the
Manipulator may mo
ve abnormally, and also may result in electric shock and/or
malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and related
equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
■
Be careful not to get any foreign substances in
the Manipulator, connectors, and
pins during maintenance.
Turning ON the power to the robot system when any
foreign substances exist in them is extremely
hazardous and may result in electric
shock
and/or malfunction of the robot system.
Arm Bottom Cover
Connector Plate
Connector Sub Plate
User Plate
Arm Top Cover
Maintenance 3. Covers
76 LS3-B/LS6-B Rev.7
3.1 Arm Top Cover
CAUTION
■
Do not remove the arm top cover
forcibly. Removing the cover forcibly may result
in damage to the cables, disconnection, and/or contact failure.
Damaged cables,
disconnection, or contact failure is extremely hazardous and may result in electric
shock and/or improper function of the robot system.
■
When mounting the cover, be careful not to allow the cables to interfere with the
cover mounting and
do not bend these cables forcibly to push them into the cover.
Unnecessary strain on cables may result in damage to the cables, disconnection,
and/or contact failure. Damaged cables, disconnection, or contact failure is
extremely hazardous and may resul
t in electric shock and/or improper function of
the robot system.
When
routing the cables, observe the cable locations
after removing the cover.
Be sure to
place the cables back to their original locations.
Arm Top Cover
Removal
Unscrew the Arm Top Cover mounting bolts, and
then lift the cover.
When bellows are installed to the manipulator,
remove the upper bellows and then remove the
Arm Top Cover. For bellows removal, refer to
Maintenance 9. Bellows
.
Be careful for user
wires and tubes when removing
t
he cover.
Arm Top Cover
LS3-B: 8-M4×8 Double sems
LS6-B: 8-M4×8 Truss
Arm Top Cover
Installation
Put the arm top cover to the arm and secure with the Arm Top Cover mounting bolts.
After
securing the Arm Top Cover, make sure that the lower limit mechanical stop is not
touch
ing the cylindrical part of the Arm Top Cover.
When bellows are
installed to the manipulator, install the Arm Top Cover and then set the
upper bellows
. For bellows installation, refer to Maintenance 9. Bellows.
NOTE
NOTE
Maintenance 3. Covers
LS
3-B/LS6-B Rev.7 77
3.2 Arm Bottom Cover
Unscrew the
Arm Bottom Cover mounting bolts and then
remove
the cover.
Arm Bottom Cover
4-M4×10
Be careful of the
end effector. When the end effector is installed, the Arm Bottom Cover may not
be removed from the shaft.
When you replace the ball screw spline unit, y
ou need to remove the end effector to remove the Arm
Bottom Cover completely.
When you can work (maintenance, inspection) without removing the cover completely, move the
shaft
to the lower limit and lower the Arm Bottom Cover.
When bellows are installed to the manipulator, remove or pull down the lower bellows and then
remove the arm bottom cover. For bellows removal, refer to
Maintenance 9. Bellows.
NOTE
Maintenance 3. Covers
78 LS3-B/LS6-B Rev.7
3.3 Connector Plate
CAUTION
■
Do not remove the connector plate
forcibly. Removing the connector plate
forcibly may result in damage to the cables, disconnection, and/or contact failure.
Damaged cables, disconnection, or contact failure is extremely hazardous and
may result in electric shock and/or improper function of the
robot system.
■
When mounting the connector plate, be careful not to allow the cables to interfere
with the plate mounting and d
o not bend these cables forcibly to push them into
the cover.
Unnecessary strain on cables may result in damage to the cables, disconnection,
and/or contact failure. Damaged cables, disconnection, or contact failure is
extremely hazardous and may result in electric shock and/or improper
function of
the robot system.
When
routing the cables, observe the cable locations after removing the connector
plate
. Be sure to place the cables back to their original locations.
Unscrew the Connector Plate mounting bolts and
remove the plate.
When removing the connector plate, remove it slowly so
that the cables will not get damaged.
4-M4×10
Connector
Plate
When mounting the Connector Plate, be careful of the following.
Prevent the air tube from bending sharply inside the
manipulator. Also, do not block the air flow.
If there is a kink in the air tube, air flow is blocked while
the manipulator is operating and may cause a trouble.
Put the air tube along the left side wall as shown in the
picture.
GOOD: Curved
BAD: Bended
NOTE
NOTE
Maintenance 3. Covers
LS
3-B/LS6-B Rev.7 79
3.4 Connector Sub Plate
CAUTION
■
Do not remove the connector sub plate
forcibly. Removing the connector sub
plate forcibly may result in damage to the cables, disconnection, and/or contact
failure. Damaged cables, disconnection, or contact failure is extremely
hazardous and may result in electric shock and/or improper function of the robot
system.
■
When
mounting the connector sub plate, be careful not to allow the cables to
interfere with the plate mounting and d
o not bend these cables forcibly to push
them into the cover.
Unnecessary strain on cables may result in damage to the cables, disconnection,
and/or contact failure. Damaged cables, disconnection, or contact failure is
extremely hazardous and may result in electric shock and/or im
proper function of
the robot system.
When
routing the cables, observe the cable locations after removing the connector
sub plate
. Be sure to place the cables back to their original locations.
U
nscrew the Connector Sub Plate mounting bolts and
remove the plate.
Refer to
Setup & Operation 3.6 Connecting the Cables.
Connector
Sub Plate
4-M3 Finger screws
(Unscrewing the screws is
not necessary)
3.5 User Plate
User Plate
Removal
(1)
Remove
the Arm Top Cover.
Refer to
Maintenance: 3.1 Arm Top Cover.
(2)
Unscrew the User Plate
mounting bolts and remove
the plate.
2-M4×10
User Plate
User Plate
Installation
(1)
Put the User Plate to the arm and secure using the mounting bolts.
(2)
Mount the Arm Top Cover.
Refer to Maintenance: 3.1 Arm Top Cover.
Maintenance 4. Cable
80 LS3-B/LS6-B Rev.7
4. Cable
WARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipulator may mo
ve abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
■
Be careful
not to get any foreign substances in the Manipulator, connectors, and
pins during maintenance.
Turning ON the power to the robot system when any
foreign substances exist in them is extremely
hazardous and may result in electric
shock
and/or malfunction of the robot system.
CAUTION
■
Be sure to connect the cables properly.
Do not allow unnecessary strain on the
cables. (Do not
put heavy objects on the cables. Do not bend or pull the cables
forcibl
y.) The unnecessary strain on the cables may result in damage to the
cables, disconnection, and/or contact failure. Damaged c
ables, disconnection,
or contact failure is extremely hazardous and may result in electric shock and/or
improper function of the robot system.
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 81
4.1 Replacing Cable Unit
LS3-B/LS6-B series does not have batteries. Position data is memorized by the motor.
When replacing cables, calibration is not necessary.
Name
Qty.
Note
Maintenance
parts
Cable unit 1
LS3-B401* : 2200784
LS6-B502* : 2196931
LS6-B602* : 2196932
LS6-B702* : 2196933
Tools
Hexagonal wrench
width across flats: 3 mm
1
For M4 screw
Spanner
width across flats: 5 mm
1
For D-sub connector removal
Nut screwdriver
width across flats: 5 mm
1
For D-sub connector removal
Torque wrench
1
Nippers
1
For cutting wire tie
Material
Wire tie
-
Cable unit
NOTE
Maintenance 4. Cable
82 LS3-B/LS6-B Rev.7
CAUTION
■
If the connectors have been disconnected during the replacement of the cable
unit, b
e sure to reconnect the connectors to their proper positions. Refer to the
block diagrams.
Improper connection of the connectors may result in improper
function of the robot
system.
For details on the connections, refer to
Maintenance: 4.2 Wiring Diagrams.
■
When installing the cover, be careful not to allow the cables to interfere with the
cover mounting and do
not bend these cables forcibly to push them into the cover.
Unnecessary strain on cables may result in damage to the cables, disconnection,
and/or contact failure. Damaged cables, disconnection, or contact failure is
e
xtremely hazardous and may result in electric shock and/or improper function of
the robot system.
When
routing the cables, observe the cable locations
after removing the cover.
Be sure to
place the cables back to their original locations.
■
Be sure to
connect the cables properly. Do not allow unnecessary strain on the
cables. (Do not
put heavy objects on the cables. Do not bend or pull the cables
forcibl
y.) The unnecessary strain on the cables may result in damage to the
cables, disconnection, and/or
contact failure. Damaged cables, disconnection,
or contact failure is extremely hazardous and may result in electric shock and/or
improper function of the robot system.
LS3-B : A brake is mounted on the motor of Joint #3 to prevent the shaft from moving
down due to the weight of the end effector while the power to the Controller is
OFF or while the motor is in OFF status (MOTOR OFF).
LS6-B : A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from
moving down and rotating due to the weight of the end effector while the power
to the Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
NOTE
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 83
Cable Unit
Removal
(1)
Turn ON the Controller and change the motor to OFF status (MOTOR OFF).
(2)
Press and hold
the brake release switch to let the shaft down. Be sure to keep enough
space and prevent the
end effector hitting any peripheral equipment.
LS3
-B : The brake release switch is applied to Joint #3.
When the brake release switch is pressed, the respective brake of the Joint #3
is released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS6
-B : The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch
is
being pressed because
the shaft may be lowered by the weight of an end
effector.
(3)
Turn OFF
the Controller.
(4)
Remove the Connector Sub Plate from the
Connector Plate.
For details, refer to
Maintenance 3.4 Connector Sub Plate
(5)
Disconnect M/C cable.
For details, refer to
Setup & Operation 3.6 Connecting the Cables - Connect and
disconnect M/C cable.
(6)
Remove the Connector Plate.
F
or details, refer to Maintenance: 3.3 Connector Plate.
(7)
Remove the following that connected to the
(inside) of the
Connector Plate and Connector Sub Plate.
A
ir tube
D-sub cable
Ethernet cable (RJ45)
Connectors
: X11, X111, X121, CV11, CV12, CV13
F
or connectors fixed on the mount base, disconnect by
holding the
clip.
NOTE
NOTE
Maintenance 4. Cable
84 LS3-B/LS6-B Rev.7
(8)
Cut off the two wire ties binding the cables on the base
side cable fixing plate.
(9)
Remove the seven ground wires that secured on the mount
base.
Be careful not to lose the spacer which holding the ground
wires.
(10)
Cut off the wire tie
binding the cables in the Base side.
(11)
Remove
the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(12)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(13)
Disconnect 10 connectors on the Arm
side.
Connectors: X22, X33,X42, X43, X44, X51, BR, X221, X231, X241
(14)
Disconnect the D
-sub cable, air tube, and Ethernet cable (RJ45) from the User Plate.
Mounting screws for the D
-sub cable are very small. Be sure to keep the screws.
Press the ring on the fittings to pull out the air tube. (
ø6×2, ø4×1)
Remember
the cable layout for reconnecting the disconnected parts after replacement.
(15)
Remove the two ground wires from the User Plate.
Unscrew the cable clamp binding the cables in the Arm side
and
remove it and
protection sheet.
(16)
Be careful not to lose the cable clamp, protection sheet, and fixed screws.
(17)
The nut secures the cable duct fittings to the User Plate.
Rotate the nut to remove it, and pull out the cables from the
User Plate.
(17)
(18)
(18)
Rotate the cable duct fittings to remove the nut that secures
to the Base, and pull out the cables from the Base.
NOTE
NOTE
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 85
Cable Unit
Installation
(1)
Pass the new cables through the Base, cable fixing plate, and
nut. Then, rotate the fittings to secure the cables.
(2)
(1)
Cable fixing
plate
(2)
Pass the cables in the User Plate side through the User Plate
and nut and turn the
nut to secure the cables.
(3)
As with the wire tie cut off at the removal step
(8), bind the cables with a new wire tie.
(4)
Connect the following to mount base
and the Connector Plate.
Air tube, D-sub cable, Ethernet cable (RJ45)
Connectors: X11, X111, X121, CV11, CV12, CV13
(5)
Connect the ground wire on the Base side to the mount base.
(6)
Connect the air tube, D
-sub cable, and Ethernet cable (RJ45) to the User Plate.
(7)
Fix the ground wire on the User Plate.
(8)
Mount the User Plate.
For the details, refer to
Maintenance: 3.5 User Plate.
(9)
Connect the connectors.
C
onnectors: X22, X33,X42, X43, X44, X51, BR, X221, X231, X241
(10)
As with the wire tie cut off at the removal step (15), bind
the cables with a new wire tie.
(11)
Mount the Connector Plate.
For the details, refer to
Maintenance: 3.3 Connector Plate.
(12)
Place and secure the Arm Top Cover without the cables
being stuck.
For
details, refer to Maintenance: 3.1 Arm Top Cover.
Execute the calibration for all joints but the Joint #1.
If the connector falls off from the battery board, execute
the calibration for all axes.
For
details, refer to Maintenance: 13 Calibration.
Maintenance 4. Cable
86 LS3-B/LS6-B Rev.7
4.2 Wiring Diagrams
4.2.1 Signal Cable
LS3-B
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 87
LS6-B
Maintenance 4. Cable
88 LS3-B/LS6-B Rev.7
4.2.2 Power Cable
LS3-B/LS6-B
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 89
4.2.3 User Cable
LS3-B/LS6-B
4.2.4 Color of Cables
The following table shows the codes and cable colors indicated in the pin assignments.
4.2.1 Signal Cable
4.2.2 Power Cable
4.2.3 User Cable
Code
Cable color
B
Black
W
White
R
Red
G
Green
Y
Yellow
BR
Brown
L
Blue
V
Violet
O
Orange
P
Pink
SB
Sky blue
Maintenance 4. Cable
90 LS3-B/LS6-B Rev.7
4.3 Replacing M/C Cable
LS3-B/LS6-B series does not have batteries. Position data is memorized by the motor.
When replacing cables, calibration is not necessary.
Name
Qty.
Note
Maintenance
parts
M/C Cable 1
3 m: 2196934
5 m: 2196935
10 m: 2196936
Tools
Flathead screwdriver
1
Torque wrench
1
M/C cable
NOTE
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 91
CAUTION
■
If the connectors have been disconnected during the replacement of the cable
unit, b
e sure to reconnect the connectors to their proper positions. Refer to the
block
diagrams.
Improper connection of the connectors may result in improper
function of the robot
system.
For details on the connections, refer to
Maintenance: 4.2 Wiring Diagrams.
■
When installing the cover, be careful not to allow the cables to interfere with the
cover mounting and do
not bend these cables forcibly to push them into the cover.
Unnecessary strain on cables may result in damage to the cables, disconnection,
and/or contact failure. Damaged cables, disconnection, or contact failure is
extreme
ly hazardous and may result in electric shock and/or improper function of
the robot system.
When
routing the cables, observe the cable locations
after removing the cover.
Be sure to
place the cables back to their original locations.
■
Be sure to
connect the cables properly. Do not allow unnecessary strain on the
cables. (Do not
put heavy objects on the cables. Do not bend or pull the cables
forcibl
y.) The unnecessary strain on the cables may result in damage to the
cables, disconnection, and/or
contact failure. Damaged cables, disconnection,
or contact failure is extremely hazardous and may result in electric shock and/or
improper function of the robot system.
M/C Cable
Removal
(1)
Turn OFF
the Controller.
(2)
Disconnect the
following connectors form the controller.
Power cable connector Signal cable connector
(3)
Loosen the screws fixing the plate.
You do not need to remove them
completely.
For details, refer to
Maintenance:
3.3 Connector Plate.
Finger
screws
4-M3×10
(4)
Slide the plate to remove it from the base.
Do not pull the M/C cable after removing
the
plate.
M/C cables are connected by the
connectors.
Doing so may result in
disconnection of the cables.
NOTE
Maintenance 4. Cable
92 LS3-B/LS6-B Rev.7
(5)
As shown on the right, pull out the cables
from the Manipulator.
(6)
Disconnect
the
connectors in the order as
shown on the right.
C
lips of the connectors are △ positions in
the figure.
Push the
clip to disconnect the connector.
2
1
3
Connector (white) for the power cable is difficult to disconnect for safety purpose.
To
disconnect the connector, securely push the clip.
If you cannot disconnect it, push the connector once, and then disconnect it by pushing
the
clip.
Do not pull the cables. Doing so may result in disconnection.
Do not remove the M/C cable form the plate.
NOTE
Maintenance 4. Cable
LS
3-B/LS6-B Rev.7 93
M/C
cable
Installation
(
1)
Set
the M/C cable as shown on the right.
Be careful not to set the plate in wrong
direction.
(2)
Connect
the connectors in the order as
shown
on the right.
2
3
1
(3)
Slide
the plate to install it.
Finger screws : 4-M3×10
Tightening torque : 0.6±0.1 N·m
Finger
screws
4-M3×10
Slide the plate until it will be parallel to the
base table.
Be careful not to tighten
the screws with the cables get caught on the plate.
(4)
Connect
the following connectors to the controller.
Power cable connector Signal cable connector
(5)
Turn ON the Controller.
NOTE
NOTE
Maintenance 4. Cable
94 LS3-B/LS6-B Rev.7
Direction of the connector sub plate
When installing the plate, be careful for the direction.
Correct direction is where the letters: WARNING of warning label of electric shock will be
parallel to the base table.
If the plate is installed in wrong direction, the cables inside the Manipulator will be twisted
and may result in disconnection.
Correct: Cables are not twisted
Wrong: Cables are twisted
Maintenance 5. Joint #1
LS
3-B/LS6-B Rev.7 95
5. Joint #1
WARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipulator may mo
ve abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before
performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
C
AUTION
■
Be careful not to apply excessive shock to the motor shaft when replacing
the
motor
s. The shock may shorten the life cycle of the motors and encoder and/or
damage them.
■
Never disassemble the motor and encoder.
A disassembled motor and encoder
will cause a positional gap and cannot be used
again.
After parts have been replaced (motors, reduction gear units, brakes, timing belts, ball screw
spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
The process of aligning the two origins is called “Calibration”.
Refer to Maintenance: 13. Calibration to execute the calibration.
Joint #1 reduction
gear unit
Joint #1 motor
Maintenance 5. Joint #1
96 LS3-B/LS6-B Rev.7
5.1 Replacing Joint #1 Motor
Name Qty. Note
Maintenance
parts
AC Servo Motor 200 W
1
2201471 (with oil seal)
O-ring
1
LS3-B
1213267 (CO0547A)
1
1520371 (CO0538A)
1
LS6-B
1213266 (CO0543A)
1
1520371 (CO0538A)
1
1510528 (CO0551A)
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 3 mm
1
For M4 screw
Torque
wrench
width across flats: 4 mm 1 For M5 screw
Wiping cloth
1
For wiping grease
Grease
Grease (SK-1A)
-
-
Joint #1 motor
Removal
(1)
Remove the
Connector Plate.
For details, refer to
Maintenance: 3.3 Connector Plate.
(2)
Disconnect the connector
.
Connectors X41, X211 (Hold the clip to remove.)
(3)
Remove the Arm #1 mounting bolt in the Joint #1 side and remove
the arm.
LS3-B:
8-M3×32
4-M3×15
LS6-B:
8-M4×40
4-M3×20
Do not remove the bolts indicated by arrows.
There is an O-ring between the Joint #1 unit and the arm. Be sure to keep the O-
ring.
LS3-B: CO0547A
LS6-B: CO0551A
(4)
Remove the screw
s mounting the Joint #1 flange on
the B
ase.
LS3-B: 8-M4×12
LS6-B: 6-M5×15
(5)
Hold
up the Joint #1 unit and remove it from the
base.
Be careful not to
damage the motor cable by getting
it
caught on the base.
NOTE
NOTE
Maintenance 5. Joint #1
LS
3-B/LS6-B Rev.7 97
(6)
Loosen the motor mounting
screws on the Joint
#1
motor flange and remove the motor unit
There is a
n O-ring in the assembly position of the
motor
flange and Joint #1 flange.
Be
careful not to lose the O-ring.
LS3-B: CO0538A
LS6-B: CO0543A
4-M4×12
Joint #1
Motor Unit
(
7)
Remove the wave
form generator from the Joint
#1 motor.
There is a brass bushing in one of the set screw
holes.
Be careful not to lose the bushing.
LS3-B:
A: Brass Bushing : M4
B: Set Screw : 2-M4×6
LS6-B:
A: Brass Bushing : M5
B: Set Screw : 2-M5×6
B: Set Screw
A: Brass Bushing
Waveform Generator
Joint #1 Motor
(8)
For LS6
-B only:
Remove the motor mounting screws to remove
the motor flange and O-ring (CO0538A).
LS3
-B does not have a motor flange.
4-M4×12
Joint #1 Motor
Motor Flange
O-ring
4-M4 washer
NOTE
Maintenance 5. Joint #1
98 LS3-B/LS6-B Rev.7
Joint #1 motor
Installation
(
1)
For LS6
-B only:
Set the O-ring (CO0538A) on the motor
mounting surface and mount the motor
flange.
LS3
-B does not have a motor flange.
4-M4×12
Joint #1 Motor
Motor Flange
O-ring
4-M4 washer
(
2)
Apply grease (SK
-1A) to the between the
waveform generator and motor.
Grease volume : LS3-B: 4g
LS6-B: 13 g
Mount the waveform generator on the Joint
#1
motor.
Be sure to
align the end face of the waveform
generator
to the end face of the motor shaft.
Tighten one of the set
screws vertically on the flat
face of the motor shaft.
Insert a bushing into the
other set
screw hole to prevent damage to the
motor shaft.
B: Set Screw
A: Brass Bushing
Waveform Generator
Joint #1 Motor
LS3-B
A: Brass Bushing : M4
B: Set Screw : 2-M4×6
LS6-B
A: Brass Bushing : M5
B: Set Screw : 2-M5×6
CAUTION
■
See the figure above for the orientation of the waveform generator.
Be sure to
install the waveform generator properly.
Improper installation of the waveform
generator will result in improper function of the
Manipulator.
(3)
Set an O
-ring on the motor flange and assemble the motor with the Joint #1 flange.
LS3-B: CO0538A
LS6-B: CO0543A
To insert the motor, turn it
slowly from side to side by hand and push in.
(4)
Mount the Joint #1 unit on the
Base.
Secure the Joint #1 motor cables facing toward the back of the Base.
(5)
Set the O
-ring removed in the removal step (3) into the O-ring groove of the arm.
LS3-B: CO0547A
LS6-B: CO0551A
Then, mount the arm to the Joint #1 unit.
(6)
Connect the connector
s.
Connectors X41, X211
(7)
Mount the Connector Plate.
For details, refer to
Maintenance: 3.3 Connector Plate.
NOTE
Maintenance 5. Joint #1
LS
3-B/LS6-B Rev.7 99
(8)
Check if the Joint #1 moves in a Jog motion by operating from
EPSON RC+ menu
-
[
Tools]-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with
MotorON and the following errors are detected,
Error 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #1 moves, the connector for the other joint might be
connected to the Joint #1 motor. Check the connector connection.
(
9)
Execute the
calibration for the Joint #1.
For details refer to
Maintenance: 13. Calibration.
Maintenance 5. Joint #1
100 LS3-B/LS6-B Rev.7
5.2 Replacing Joint #1 Reduction Gear Unit
A reduction gear unit consists of the following three parts. When replacing the reduction
gear unit, be sure to always replace the waveform generator, flexspline, and circular spline
all together as one set.
Waveform generator, Flexspline, Circular spline
For details of the reduction gear unit, refer to Maintenance: 14. Maintenance Parts List.
Name
Qty.
Note
Maintenance
Parts
Reduction Gear Unit 1
LS3-B: 1765520
LS6-B: 1750570
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
1
Nippers
1
Spatula
1
For apply grease
Wiping cloth
1
For wiping grease (Flange)
1
For wiping grease (Bolt)
Screw (M4) 2
About 20 mm in length
For flexspline removal
Grease
Grease (SK-1A)
-
-
Joint #1
R
eduction
G
ear Unit
Removal
(1)
Remove the Joint #1 motor unit.
Follow
the removal steps in Maintenance: 5.1 Replacing Joint #1 Motor.
(2)
Remove the
reduction gear unit from the
Joint #1 flange.
LS3-B: 16-M3×20
LS6-B: 16-M4×25
Flange
Reduction
Gear Unit
Bolts
Maintenance 5. Joint #1
LS
3-B/LS6-B Rev.7 101
Joint #1
R
eduction
G
ear Unit
Installation
(1)
A
new reduction gear unit contains the
parts shown
in the picture on the right
when it
is unpacked.
The gear grooves of the flexspline,
circular spline
, and the bearings of the
waveform generator
have been greased.
Wi
pe off excess grease from the mounting
surface.
Flexspline and
Cross roller bearing unit
Circular spline
Waveform generator
O-ring
C
AUTION
■
Never
adjust (loosen or tighten) the mounting bolts between the flexspline and
cross roller bearing unit.
If the mounting bolts are adjusted, the flexspline and
cross roller bearing unit must be
aligned by the maker of the reduction gear unit.
(2)
Fit the
O-
rings into the grooves on both
side
s of the new circular spline.
Make
sure that the rings do not come out
of the grooves.
Convex side
Grooves
The other side
(3)
Face the convex side of the circular spline
down,
and then fit it into the flexspline.
(4)
M
atch the screw holes on the inner ring of
the cross roller bearing unit and the
through holes of the circular spline.
Maintenance 5. Joint #1
102 LS3-B/LS6-B Rev.7
(5)
Secure
the reduction gear flange to the circular
spline.
Loosely f
asten all bolts in a crisscross pattern so
that
the bolts will be fastened evenly. Then,
using a torque wrench,
tighten each bolt securely
in a crisscross pattern
at the torque specified in the
table below.
Flange
Reduction
Gear Unit
Bolts
Item Bolt type Bolts Tightening torque
Joint #1 reduction
gear unit
LS3-B
M3×20
16
2.35 N⋅m (24 kgf⋅cm)
LS6-B
M4×25
16
5.4 N⋅m (55 kgf⋅cm)
Be careful not to apply too much force since it may damage the parts
.
(6)
Apply grease (SK
-1A) inside the flexspline.
Grease volume:LS3-B: 19g
LS6-B: 37 g
(7)
Mount the Joint
#1 motor.
For more details, refer to the installation steps in
Maintenance: 5.1 Replacing Joint
#1 Motor.
NOTE
Maintenance 6. Joint #2
LS
3-B/LS6-B Rev.7 103
6. Joint #2
W
ARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipulator may mo
ve abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before
performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
C
AUTION
■
Be careful not to apply excessive shock to the motor shaft when replacing
the
motor
s. The shock may shorten the life cycle of the motors and encoder and/or
damage them.
■
Never disassemble the motor and encoder.
A disassembled motor and encoder
will cause a positional gap and cannot be used
again.
After parts have been replaced (motors, reduction gear units, brakes, timing belts, ball screw
spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
The process of aligning the two origins is called “Calibration”.
Refer to Maintenance: 13. Calibration to execute the calibration.
Joint #2 Motor
Joint #2
Reduction Gear Unit
Maintenance 6. Joint #2
104 LS3-B/LS6-B Rev.7
6.1 Replacing Joint #2 Motor
Name
Qty.
Note
Maintenance
Parts
AC Servo
Motor
100 W
1
LS3-B: 2201472
200 W
1
LS6-B: 2197986
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
1
Nippers
1
For cutting wire tie
Wiping cloth
1
For wiping grease
Material
Wire tie
-
Grease Grease
-
LS3-B: SK-2
-
LS6-B: SK-1A
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Joint #2
Motor
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pre
ssing the brake release switch.
Be sure to keep enough space and prevent
the end effector hitting any
peripheral
equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release switch is pressed, the respective brakes of the Joint #3
is released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(6)
Cut off the wire tie binding the cables.
D
o not cut the other wire ties.
NOTE
Maintenance 6. Joint #2
LS
3-B/LS6-B Rev.7 105
(7)
Disconnect the connectors
.
Connectors: X221, X21 (Hold the clip to remove.)
(8)
Remove
the screws mounting the motor unit
and then remove
the Joint #2 motor unit from
the Arm #2.
Motor mounting screw
LS3-B: 2-M4×55+ spacer
LS6-B: 4-M4×12+ washer
To pull out
the motor smoothly, move the Arm
#2 slowly by
hand while pulling the motor.
Joint #2
Motor Unit
Arm #2
Mounting
screws
(9)
Remove
the waveform generator from the
Joint #2 motor.
There is a brass bushing in one of the
set
screw holes.
Be sure to keep the bushing.
LS3-B
2-M4×6
Set Screws
M4 Brass Bushing
Joint #2 Motor
Waveform Generator
LS6-B
2-M4×6
Set Screws
M4 Brass Bushing
Joint #2 Motor
Waveform Generator
(10)
For LS3
-B only
Remove the motor flange from Joint #2.
LS6
-B does not have a motor flange.
LS3-B
2-M4×55
Motor Flange
Spacer
NOTE
Maintenance 6. Joint #2
106 LS3-B/LS6-B Rev.7
Joint #2
Motor
Installation
(1)
For LS3
-B only:
Mount the motor flange on the Joint #2
motor.
LS6
-B does not have a motor flange.
LS3-B
2-M4×55
Motor Flange
Spacer
(2)
Mount the waveform generator on the Joint
#2
motor.
Be sure to
align the end face of the waveform
generator to the end face of the motor
shaft.
Tighten one of the set
screws vertically on the
flat face of the motor shaft.
Insert a bushing
into the other set
screw hole to prevent damage
to the motor shaft.
LS3-B
2-M4×6
Set Screws
M4 Brass Bushing
Joint #2 Motor
Waveform Generator
LS6-B
2-M4×6
Set Screws
M4 Brass Bushing
Joint #2 Motor
Waveform Generator
CAUTION
■
See the figures above for the orientation of the waveform generator.
Be sure to
install the waveform generator properly.
Improper installation of the waveform
generator will result in improper function of the Manipulator.
(3)
Apply grease between the waveform generator and motor flange first.
Then, apply to
inside the flexspline.
Between the waveform generator and motor flange
Grease volume LS3-B: 4 g (SK-2)
LS6-B: 6 g (SK-1A)
Inside the flexspline
Grease volume LS3-B: 11 g (SK-2)
LS6-B: 16 g (SK-1A)
NOTE
Maintenance 6. Joint #2
LS
3-B/LS6-B Rev.7 107
(4)
M
ount the Joint #2 motor unit on the Arm #2.
To insert the motor, slowly move the Arm #2 by
hand and push in.
Motor mounting screw
LS3-B: 2-M4×55+ spacer
LS6-B: 4-M4×12+ washer
Joint #2
Motor Unit
Arm #2
Mounting
screws
(5)
Mount the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(6)
Connect the connectors.
C
onnectors: X221, X21.
(7)
Bind
the cables with a wire tie
in their original positions as before removed in the
r
emoval step (6).
Do not
allow unnecessary strain on the cables.
(8)
Mount the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(9)
Check if the
Joint #2 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with MotorON and the following errors are detected,
E
rror 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #2 moves, the connector for the other joint might be
connected to the Joint #2 motor.
Check the connector connection.
(
10)
Execute the calibration for Joint #2.
For details refer to
Maintenance: 13. Calibration.
Maintenance 6. Joint #2
108 LS3-B/LS6-B Rev.7
6.2 Replacing Joint #2 Reduction Gear Unit
A reduction gear unit consists of the following three parts. When replacing the reduction
gear unit, be sure to always replace the following parts all together as one set.
Waveform generator, Flexspline, Circular spline
For details of the three parts, refer to Maintenance: 14. Maintenance parts list.
Name
Qty.
Note
Maintenance
parts
Reduction Gear Unit 1
LS3-B: 1587600
LS6-B: 1750571
O-ring 1
LS3-B: 1213266 (CO0543A)
LS6-B: 1213267 (CO0547A)
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
1
Nipper
1
Spatula
1
For apply grease
Wiping cloth
1
For wiping grease (Flange)
1
For wiping grease (Bolt)
Screw (M3) Length about 20 mm
2
For removing the flexspline
Material
Wire tie
-
Grease Grease
-
LS3-B: SK2
-
LS6-B: SK-1A
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from
moving down and rotating due to the weight of the end effector while the power to
the Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
NOTE
Maintenance 6. Joint #2
LS
3-B/LS6-B Rev.7 109
Joint #2
R
eduction
G
ear Unit
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch.
Be sure to keep enough space and prevent the
end effector
hitting any peripheral
equipment.
LS3
-B: The brake release switch is applied to both Joint #3.
When the brake release switch is pressed, the respective brake of the Joint #3 is
released simultaneously.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release
switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch
is
being pressed because
the shaft may be lowered by the weight of an end
effector.
(3)
Turn OFF the Controller.
(4)
Remove the waveform generator from the Joint #2 motor.
Follow
the removal steps in Maintenance: 6.1 Replacing Joint #2 Motor.
(5)
Remove the Arm #2 by removing the screws
mounting
the Arm #2 on the reduction gear unit.
LS3-B
A: 10-M3×28
B: 8-M3×30+8-M3 small washer
C: 4-M3×15+4-M3 small washer
LS6-B
A: 16-M3×28
B: 8-M3×32+8-M3 small washer
C: 4-M3×12+4-M3 small washer
Arm #2
Reduction
Gear Unit
Arm #1
B
C
O ring
A
(6)
Remove the reduction gear unit from the
Arm #1
by removing the screws that mounts the reduction
gear unit on the Arm #1.
There is an O
-ring between the Arm #1 and the
reduction gear unit.
Be careful not to lose the removed O-ring.
Maintenance 6. Joint #2
110 LS3-B/LS6-B Rev.7
Joint #2
R
eduction
G
ear Unit
Installation
(1)
A
new
reduction gear unit contains the
parts shown
in the picture on the right
when it
is unpacked.
T
he gear grooves of the flexspline, circular
spline
, and the bearings of the waveform
generator
have been greased. Wipe off
excess grease
from the mounting surface.
O-ring
Flexspline and
Cross roller bearing unit
Circular spline
Waveform generator
CAUTION
■
Never
adjust (loosen or tighten) the mounting bolts between the flexspline and
cross roller bearing unit.
If the mounting bolts are adjusted, the flexspline and
cross roller bearing unit must be
aligned by the maker of the reduction gear unit.
(2)
Fit the
O-rings into the grooves on both
side
s of the new circular spline.
Make
sure that the rings do not come out
of the grooves.
Convex side
Grooves
The other side
(3)
Face the convex side of the circular spline
down,
and then fit it into the flexspline.
(4)
M
atch the screw holes on the inner ring of
the cross roller bearing unit and the
through holes of the circular spline.
Maintenance 6. Joint #2
LS
3-B/LS6-B Rev.7 111
(5)
Set the O-ring removed in the removal step (6)
into the O-ring groove of the Arm #1.
If the O-ring is not fit into the groove, please use
another O-ring which is prepared as maintenance
part.
Install the flexspline on the Arm #1.
LS3-B
A: 10-M3×28
B: 8-M3×30+8-M3 small washer
C: 4-M3×15+4-M3 small washer
LS6-B
A: 16-M3×28
B: 8-M3×32+8-M3 small washer
C: 4-M3×12+4-M3 small washer
Arm #2
Reduction
Gear Unit
Arm #1
B
C
O ring
A
Loosely
secure all bolts in a crisscross pattern so that the bolts will be secured
evenly.
Then, using a torque wrench,
tighten each bolt securely in a crisscross pattern at the
torque specified in the table below.
Item
Bolt type
Tightening torque
Joint #2 reduction gear unit M3
2.35 N⋅m (24 kgf⋅cm)
Be careful not to apply too much force since it may damage the parts
(6)
Apply grease between the motor flange and waveform generator
first. Then, apply
to
inside the flexspline.
Between the waveform generator and motor flange
Grease volume LS3-B: 4 g (SK-2)
LS6-B: 6 g (SK-1A)
Inside the flexspline
Grease volume LS3-B: 11 g (SK-2)
LS6-B: 16 g (SK-1A)
(7)
Set the attached O-ring into the O-ring groove of the circular spline.
Secure the Arm #2 on the circular spline.
(8)
Mount
and Joint #2 motor.
Follow the installation steps in
Maintenance: 6.1 Replacing Joint #2 Motor.
NOTE
NOTE
Maintenance 7. Joint #3
112 LS3-B/LS6-B Rev.7
7. Joint #3
WARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipulator may mo
ve abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before
performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
CAUTION
■
Be careful not to apply excessive shock to the motor shaft when replacing
the
motor
s. The shock may shorten the life cycle of the motors and encoder and/or
damage them.
■
Never disassemble the motor and encoder.
A disassembled motor and encoder
will cause a positional gap and cannot be used
again.
After parts have been replaced (motors, reduction gear units, brakes, timing belts, ball screw
spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins. The process of aligning
the two origins is called “Calibration”.
Refer to Maintenance: 13. Calibration to execute the calibration.
Joint #3 Brake
Z belt
Joint #3 Motor
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 113
7.1 Replacing Joint #3 Motor
Name
Qty.
Note
Maintenance
parts
AC Servo Motor 100 W 1 2201472
Tools
Hexagonal
wrench
width across flats: 1.5 mm
1
For M3 set screw
width across flats: 2.5 mm
1
For M5 set screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
Nippers
1
For cutting wire tie
Sonic tension meter
Force gauge
1
Z: Belt tension (pulling force)
69N (7.0 ± 0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
Material
Wire tie
-
LS3B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Joint #3 motor
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be sure
to keep enough space and prevent
the end effector hitting any peripheral equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release swit
ch is pressed, the respective brake of the Joint #3 is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: When the brake release switch is pres
sed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Cut off the wire tie binding the Joint #3 motor cables.
Do not cut off the other wire ties that do not relate with removal of the User
Plate.
(6)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
NOTE
Maintenance 7. Joint #3
114 LS3-B/LS6-B Rev.7
(7)
Disconnect the following connectors.
Connectors: X231, X43 (Hold the clip to remove.)
(8)
Loosen the bolts for the Joint #3 motor unit.
Joint #3
Motor Unit
3-M4×15+ Washer
(9)
Remove the Joint #3 motor from the Joint
#3 motor unit.
Joint #3 Motor
2-M4×55
+ Spacer
(10)
Loosen the screws of the pulley
and the
brake hub. R
emove them from the Joint
#3 motor.
There is a brass bushing in one of the
set
screw
holes. Be sure to keep the bushing.
Joint #3
Motor
M5×8
Set screws
Pulley
M5×8
Set screws
+M5
Bushing
Brake Hub
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 115
Joint #3 motor
Installation
(1)
Mount
the pulley and the brake hub to the Joint #3 motor.
LS3
-B:
Pass
the pulley through the motor shaft.
Fix
the pulley leaving
5.5 mm space from the
motor mounting surface.
Insert the brake hub all the way seated in
the
pulley and secure it.
LS3-B
Joint #3 Motor
M3×4 Set screws
+M3 Bushing
Brake hub
M3×4
Set screws
5.5mm
LS6
-B:
Fix the pulley leaving 0.5 mm space from
the motor plate.
Make sure to leave 0.5 mm between the
motor plate and the pulley with the motor
plate installed. Insert the brake hub all
the way seated in the pulley and secure it.
LS6-B
Joint #3 Motor
Electromagnetic
brake
Pulley
Motor Plate
Tighten one of the set
screws vertically on the flat face of the motor shaft.
Insert a bushing into the other set
screw hole to prevent damage to the motor shaft.
(2)
Mount the Joint #3 motor to the motor plate
while
aligning the hub to the brake disc.
Before aligning the hub, set the motor so
that the
pulley will be inside of the Z belt.
Secure the motor cables facing to back of
the Arm.
Joint #3 Motor
2-M4×55
+ Spacer
Motor plate
Z Belt
(3)
Loosely secure the Joint #3 motor unit to
the Arm #2. Make sure that the teeth of
the timing belt are
engaged with those of the pulley.
At this point, make sure that the Joint #3 motor unit can be moved by hand, and it
will
not tilt when pushed by tensioner. If the unit is secured too loose or to
o tight, the belt
will not have the proper tension
NOTE
NOTE
Maintenance 7. Joint #3
116 LS3-B/LS6-B Rev.7
(4)
Apply the proper tension to the
Z belt and secure the Joint #3 motor unit.
Pass a suitable cord or string around the Joint #
3 motor unit near its mounting plate.
Then, pull the cord using a
force gauge or similar tool to apply the specified tension
Z belt tension: 34.5N (3.5 ± 0.5 kgf)
Axial tension (pulling force): 69 N (7.0 ± 0.5 kgf)
3-M4×15
+ Washer
Force gauge
Joint #3 motor unit
To
check belt tension with the tension meter, refer to Maintenance:
7.4 Checking the
Timing Belt Tension
(Z Belt).
(5)
Connect the connectors.
Connectors: X231, X241, X43, X44, X51
(6)
Mount the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(7)
Bind the cables with a wire tie in their original positions as before removed in the
removal step (6).
Do not allow unnecessary strain
on the cables.
(8)
Install the
Arm Top Cover.
For details,
refer to Maintenance: 3.1 Arm Top Cover.
(9)
Check if the Joint #
3 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with
MOTOR ON and the following errors are detected,
Error 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #
3
moves, the connector for other joint might be
connected to the Joint #
3 motor. Check the connector connection.
(10)
Execute the calibration of
Joints #3, #4.
For details, refer to Maintenance: 13. Calibration.
NOTE
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 117
7.2 Replacing the Timing Belt
Name
Qty.
Note
Maintenance
parts
Z belt 1
LS3-B: 1554773
LS6-B: 1563316
Tools
Hexagonal
wrench
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
1
Cross-point screwdriver (#1)
1
For pan head screw (small)
Nippers
1
For cutting wire tie
Sonic tension meter
Force gauge
1
Z: Axial tension (pulling force):
69N (7.0 ± 0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
Material
Wire tie
-
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from
moving down and rotating due to the weight of the end effector while the power to
the Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Z belt
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be sure
to keep enough space and prevent
the end effector hitting any peripheral equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release switch is pressed, the respective brake of the Joint #3
is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Cut off the wire tie binding the cables.
Cut off the wire tie binding the
Joint #3 brake cable.
Do not cut off a wire tie that binds the cables to the User Plate.
NOTE
Maintenance 7. Joint #3
118 LS3-B/LS6-B Rev.7
(6)
Disconnect the following connectors.
Connectors: X231, X43, X51 (Hold the clip to remove.)
(7)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(8)
Remove the screws for the Joint #3 motor unit
and pull out the Joint #3 motor unit.
3-M4×15
+ Washer
Joint #3
Motor Unit
(9)
Remove the Joint #3 motor from the motor
plate
and pull out the Z belt.
The belt is placed around the pulley.
To
remove the Joint #3 motor, tilt the motor
slightly
and pull it upward while avoiding the
belt.
(10)
Unscrew
the control board mounting screws to
r
emove the control board.
LS3-B: 3-M3×8 Pan head screws (Small)
LS6-B: 4-M3×8 Pan head screws (Small)
Z belt
Spline Plate
3-M4×12
Control board
(11)
Remove the screws mounting the spline
plate.
Hold up the spline plate and pull out the
Z belt.
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 119
Z belt
Installation
(1)
Pass
a new Z belt through the shaft.
Z belt
Spline Plate
3-M4×12
Control board
(2)
Lower the spline plate with the Z belt placed
around the spline plate pulley.
Secure the spline plate with 3 screws.
Loosely secure the spline plate on the Arm #2
and move the shaft up and down several times
before firmly secure the spline plate.
(3)
Fix
the control board.
LS3-B: 3-M3×8 Pan head screws (Small)
LS6-B: 4-M3×8 Pan head screws (Small)
(4)
Mount the Joint #3 motor unit back in the arm.
(5)
Pass the brake cable and
over-excitation
power supply through the Z belt.
Place the Z belt around the Z1 pulley and Z2
pulley, with the gear grooves of the belt fitting
into grooves of the pulleys completely.
3-M4×15
+ Washer
Joint #3
Motor Unit
(6)
Loosely secure the
Joint #3 motor unit to the
Arm #2.
At this point, make sure that the Joint #3 motor
unit can be moved by hand, and it
will
not tilt when pushed by tensioner. If the unit is secured too loose or too tight,
the belt will not have
the proper tension.
(7)
Apply the proper tension to the
Z belt and secure the Joint #3 motor unit.
Pass a suitable cord or string around the Joint #
3 motor unit near its mounting plate.
Then, pull the cord using a force gauge or similar tool to apply the specified
tension
Z belt tension: 34.5N (3.5 ± 0.5 kgf)
Axial tension (pulling force): 69 N (7.0 ± 0.5 kgf)
3-M4×15
+ Washer
Force gauge
Joint #3 motor unit
To
check belt tension with the tension meter, refer to Maintenance:
7.4 Checking the
Timing Belt Tension (Z Belt).
(8)
Connect the connectors
.
Connectors: X231, X241, X43, X44, X51
NOTE
NOTE
Maintenance 7. Joint #3
120 LS3-B/LS6-B Rev.7
(9)
Mount the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(10)
Bind
the cables with a wire tie in their original positions as before removed in
the
removal
step (7). Do not allow unnecessary strain on the cables.
(11)
Install the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(12)
Check if
the Joint #3 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with MotorON and the following errors are detected,
Error 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #
3
moves, the connector for the other joint might be
connected to the Joint #
3 motor. Check the connector connection.
(1
3)
Execute the calibration of Joint #3.
For details, refer to Maintenance: 13. Calibration.
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 121
7.3 Replacing the Brake
Name
Qty.
Note
Maintenance
parts
Electromagnetic Brake 1 1750573
Tools
Hexagonal
wrench
width across flats: 1.5 mm
1
For M3 set screw
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
width across flats: 4 mm
1
For M5 screw
Torque wrench
1
Nippers
1
For cutting wire tie
Sonic tension meter
Force gauge
1
Z: Axial tension (pulling force)
69N (7.0 ± 0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
Material
Wire tie
-
LS3B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Joint #3 brake
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pres
sing the brake release switch.
Be sure to keep enough space and prevent
the end effector hitting any
peripheral
equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release switch is pressed, the respective brake of the Joint #3 is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B:
When the brake release switch is pressed, the respective brakes of the Joint #3 and
Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
NOTE
Maintenance 7. Joint #3
122 LS3-B/LS6-B Rev.7
(5)
Remove the Joint #3 motor unit.
For details, refer to
Maintenance: 7.2
Replacing
the Timing Belt.
3-M4×15
+ Washer
Joint #3
Motor Unit
(6)
Remove the Joint #3 motor from the Joint #3 motor
unit.
The belt is placed around the pulley.
To remove the
Joint #3 motor, tilt the motor
slightly and pull it upward
while avoiding the
belt.
Joint #3 motor
2-M4×55
+ Washer
(7)
Remove the brake from the brake
plate.
Brake
2-M3×8
(8)
Loosen the screws of
brake hub and remove
it
from the pulley of the Joint #3 motor.
There is a brass bushing in one of the set
screw holes. Be sure to keep the bushing.
Joint #3
Motor
M3×4 Set Screws
+M3 Bushing
Brake Hub
M3×4
Set Screws
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 123
Joint #3 brake
Installation
(1)
Mount the brake to the brake plate.
Brake
2-M3×8
(2)
Mount the brake hub to the
pulley of the
Joint #3 motor.
For LS
3-B:
Pass the
pulley through the motor shaft.
Fix the pulley so that the distance between
the motor mounting surface and the pulley
upper face is 5.5 mm.
Let the brake hub hit the pulley and fix
where it touches the pulley edge face.
Joint #3
Motor
M3×4 Set screws
+M3 Bushing
Brake Hub
M3×4
Set screws
5.5mm
For LS6
-B:
Fix the pulley leaving 0.5 mm space from
the motor plate.
Make sure to leave 0.5 mm between the
motor plate and the pulley with the motor
plate installed.
Insert the brake hub all the way seated in
the pulley and secure it.
Joint #3 motor
Electromagnetic
brake
Pulley
Motor plate
Tighten one of the set screws vertically on the flat face of the motor shaft.
Insert a bushing into the other set screw hole to prevent damage to the motor shaft.
When the brake disc is not aligned, manually adjust the
position by following the steps
below.
1. C
onnect the connector BR.
2.
P
ress the brake release switch to release the brake.
3.
Adjust the brake disk manually so that the hole is at the center.
Maintenance 7. Joint #3
124 LS3-B/LS6-B Rev.7
(
3)
Mount the Joint #3 motor unit
back in
the
Arm #2.
3-M4×15
+ Washer
Joint #3
Motor Unit
Apply the proper tension to the
Z belt, and then secure the Joint #3 motor unit.
Z belt tension: 34.5N (3.5 ± 0.5 kgf)
Axial tension (pulling force): 69 N (7.0 ± 0.5 kgf)
3-M4×15
+ Washer
Force gauge
Joint #3 motor unit
For details, refer to the section 7.2 Replacing the Timing Belt.
To
check belt tension with the tension meter, refer to Maintenance:
7.4 Checking the
Timing Belt Tension
(Z Belt).
(
4)
Mount
the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(
5)
Check if the Joint #
3 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with
MOTOR ON and the following errors are detected,
Error 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #
3 moves, the connector for other joint might be
connected to the Joint #
3 motor. Check the connector connection.
(
6)
Execute
the calibration of Joint #3.
For details, refer to
Maintenance: 13. Calibration.
NOTE
Maintenance 7. Joint #3
LS
3-B/LS6-B Rev.7 125
7.4 Checking the Timing Belt Tension (Z Belt)
Name
Qty.
Note
Tool Sonic tension meter 1
Fo
r details of usage and measurement methods of the tension
meter, refer to the instruction manual of the tension meter.
Joint #3
Belt tension
check
(1)
Enter appropriate setting values to the sonic tension meter.
Model Belt
Unit mass M
[g/ (1 mm width ×1 m
length)]
Width W
[mm]
Span S
[mm]
LS3-B
Z belt
1.9
9
127
LS6-B
Z belt
1.9
10
212
(2)
Strum the belt and measure tension.
Measurement failure may occur if the
microphone touches the belt during
measurement.
NOTE
Maintenance 8. Joint #4
126 LS3-B/LS6-B Rev.7
8. Joint #4
WARNING
■
Do not insert or pull out the motor connectors while the power to the robot system
is turned ON. Inserting or pulling out the motor connectors
with the power ON is
extremely hazardous and may result
in serious bodily injury as the Manipulator
may move abn
ormally, and also may result in electric shock and/or malfunction of
the robot system.
■
To shut off power
to the robot system, pull out the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle. DO
NOT connect it directly to a factory power source.
■
Before
performing any replacement, turn OFF the Controller
and related
equipment,
and then pull out the power plug from the power source.
Performing any replacement with the power ON is extremely hazardous and may
result in
electric shock and/or malfunction of the robot system.
CAUTION
■
Be careful not to apply excessive shock to the motor shaft when replacing
the
motor
s. The shock may shorten the life cycle of the motors and encoder and/or
damage them.
■
Never disassemble the motor and encoder.
A disassembled motor and encoder
will cause a positional gap and cannot be used
again.
After parts have been replaced (motors, reduction gear units, brakes, timing belts, ball screw
spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
The process of aligning the two origins is called “Calibration”.
Refer to Maintenance: 13. Calibration to execute the calibration.
Joint #4 Motor
U2 Belt
U1 Belt
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 127
8.1 Replacing Joint #4 Motor
Name
Qty.
Note
Maintenance
parts
AC Servo Motor 100 W 1 2201472
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 3 mm
1
For M4 screw
Torque wrench
1
Cross-point screwdriver (#1)
1
For pan head screw (small)
Nippers
1
For cutting wire tie
Sonic tension meter
Force gauge
1
U1: Axial tension (pulling force)
LS3-B: 39N (4.0 ± 0.5 kgf)
LS6-B: 56N (5.7 ± 0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
CAUTION
■
The belt must be installed with proper tension;
otherwise the following problems
may occur.
If f
alling below the lower limit : Jumping of the belt gears (position gap)
If exceeding the upper limit : Abnormal noise or vibration (oscillation),
decline in the life of driving parts
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Joint #4 motor
Removal
(1)
Turn ON the
Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be sure
to keep enough space and prevent
the end effector hitting any peripheral equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When
the brake release switch is pressed, the respective brake of the Joint #3 is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is b
eing
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
NOTE
Maintenance 8. Joint #4
128 LS3-B/LS6-B Rev.7
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Cut off
the wire tie binding the cables.
At this point, do not cut off a wire tie (in the duct fittings outlet) that binds the cables to
the User Plate.
(6)
Disconnect the connectors
.
Connector X241, X44 (Hold the clip to remove.)
(7)
Remove the User
Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(8)
Remove the Joint #4 motor unit from the
Arm #2.
Remove the bolts securing the Joint #4
motor on the motor plate and pull
out the
motor
.
The belt is placed around the pulley.
Tilt
the motor unit slightly and pull it out.
Joint #4
Motor Unit
3-M4×12
+ Washer
Motor Plate
(9)
Remove the pulley from the Joint #4
motor.
There is a brass bushing in one of the set
screw holes. Be sure to keep the bushing.
2-M4×8 Set Screws
+ Bushing
Pulley
2-M4×55
+ Spacer
Motor Plate
(10)
Remove the motor plate from the Joint #4
motor.
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 129
Joint #4 motor
Installation
(1)
Mount the mot
or plate to the Joint #4 motor.
At this point, the m
otor cables must be in the
convex
shape side of the plate.
2-M4×8 Set Screws
+ Bushing
Pulley
2-M4×55
+ Spacer
Motor Plate
(2)
Mount
the pulley to the Joint #4 motor.
Be sure to fit the end face of the pulley to
the end face of the motor shaft.
Be sure to set the one set of the set screws + bushing
vertically on the flat face of the
motor shaft.
Be careful not to damage the motor shaft to tighten the bushing into the
other set
screw hole.
(3)
Place the pulley around the U1
belt and
p
lace the Joint #4 motor unit in the upper
face of the A
rm #2.
Joint #4
Motor Unit
3-M4×12
+ Washer
Motor Plate
(4)
Loosely secure the Joint #4 motor unit to
Arm
#2.
Make sure
the motor unit can be moved by hand, and it will not tilt when pulled.
I
f the unit is secured too loose or too tight, the belt will not have the proper tension.
Make sure the gear grooves of the belt are fit into those of the pulleys completely.
NOTE
Maintenance 8. Joint #4
130 LS3-B/LS6-B Rev.7
(5)
Apply the proper tension to the U1 belt and secure
the Joint #4 motor unit.
Pass
a suitable cord or string around the Joint #4 motor unit near its mounting plate.
Then, p
ull the cord using a force gauge or similar tool to apply the specified tension
shown
in the figure.
LS3-B:
U1 belt tension: 19.5N (2.0±0.5 kgf)
Axial tension (pulling force): 39 N (4.0 ± 0.5 kgf)
LS6-B:
U1 belt tension: 28N(2.8±0.5kgf)
Axial tension (pulling force): 56 N (5.7 ± 0.5 kgf)
3-M4×12
+ Washer
Force gauge
Joint #4
Motor Unit
To
check belt tension with the tension meter, refer to Maintenance: 8
.4 Checking the
Timing Belt Tension (U1, U2 Belt).
(6)
Connect the connectors
.
Connectors X241, X44
(7)
Mount the User Plate
.
For details, refer to
Maintenance: 3.5 User Plate.
(8)
Bind
the cables with a wire tie in their original positions
as before removed in removal
step (5).
Do not allow unnecessary strain on the cables.
(9)
Mount the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(10)
Check if the
Joint #4 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with
MOTOR ON and the following errors are detected,
Error 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #
4
moves, the connector for other joint might be
connected to the Joint #
4 motor. Check the connector connection.
(11)
Execute the calibration of Joint #4.
For details on the calibration method, refer to Maintenance: 13. Calibration.
NOTE
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 131
8.2 Replacing the Timing Belt
Name
Qty.
Note
Maintenance
parts
U1 belt
width 10 mm
1
LS3-B: 1554775
U2 belt
width 16 mm
1
LS3-B: 1554777
U1 belt
width 10 mm
1
LS6-B: 1612286
U2 belt
width 20 mm
1
LS6-B: 1763573
Tools
Hexagonal
wrench
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
Cross-point screwdriver (#1)
1
For pan head screw (small)
Torque wrench
1
Nippers
1
For cutting wire tie
Force gauge
Sonic tension meter
1
LS3-B: Axial tension (pulling force)
U1 : 39 N (4.0 ± 0.5 kgf)
U2 : 69N (7.0 ± 0.5 kgf)
LS6-B: Axial tension (pulling force)
U1 : 56 N (5.7 ± 0.5kgf)
U2 : 125 N (12.3 ± 0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
CAUTION
■
The belt must be installed with proper tension;
otherwise the following problems
may occur.
I
f falling below the lower limit : Jumping of the belt gears (position gap)
If exceeding the upper limit : Abnormal noise or vibration (oscillation),
decline in the life of driving parts
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
NOTE
Maintenance 8. Joint #4
132 LS3-B/LS6-B Rev.7
8.2.1 U2 Belt
U2 belt
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be sure
to keep enough space and prevent
the end effector hitting any peripheral equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release swit
ch is pressed, the respective brake of the Joint #3 is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Remove
the control board.
LS3-B: 3-M3×8 Pan head screws (Small)
LS6-B: 4-M3×8 Pan head screws (Small)
Control Board
(6)
Cut off the wire tie binding the cables.
Do not cut off the wire tie that binds the cables to the User Plate.
(7)
Disconnect the following connectors.
Connectors: X33, X41, X51, X241 (Hold the clip to remove.)
BR4 (Only LS6-B)
(8)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 133
(9)
Remove the screws securing the Joint #3
motor unit and pull out the motor unit.
3-M4×15
+Washer
Joint #3
Motor Unit
(1
0)
Remove the screws securing the Joint #4
motor unit and pull out the motor unit.
The belt is placed around the pulley.
Tilt the motor unit slightly and pull it out.
3-M4×12
＋Washer
Joint #4
Motor Unit
(1
1)
Remove the screws securing the Joint #4
intermediate shaft unit.
Pull out the Joint #4 intermediate shaft
unit and U1 belt.
3-M4×12
＋Washer
Joint #4
Intermediate
Shaft Unit
U1 belt
(1
2)
Remove the screws mounting the spline
plate.
Hold up the spline plate and pull out the
Z belt and U2 belt.
3-M4×12
Spline Plate
Z belt
U2 belt
Maintenance 8. Joint #4
134 LS3-B/LS6-B Rev.7
U2 belt
Installation
(1)
Hold up the spline plate and set the U2 belt
around the U3 pulley.
Make sure
the gear grooves of the belt are
fit into
those of the pulleys completely.
3-M4×12
Spline Plate
Z belt
U2 belt
(2)
Hold up the spline plate and set the Z belt around the Z2 pulley.
Make sure
the gear grooves of the belt are fit into those of the pulleys completely.
(3)
Loosely secure the spline plate on the Arm #2
and move
the shaft up and down several
times
before firmly secure the spline plate.
(4)
Keeping the U1 belt on the large
pulley of the Joint #4 intermediate
shaft unit, set the U2 belt in the Arm
#2 on the small pulley and put them
on the Arm
#2 upper surface.
Make sure
the gear grooves of the
belt
s are fit into those of the pulleys
complete
ly.
3-M4×12
＋Washer
Joint #4
Intermediate
Shaft Unit
U1 belt
Pulley (Large)
Pulley (Small)
U2 belt
(5)
Loosely secure the Joint #
4 intermediate shaft unit.
Make sure
the unit can be moved by hand, and it will not tilt when pulled. If the unit
is
secured too loose or too tight, the belt will not have the proper tension.
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 135
(6)
Apply the proper tension to the U2 belt, and then secure the Joint #4 intermediate
shaft unit.
Pass a suitable cord or string around the
Joint #4 motor unit near its mounting plate.
Then, pull the cord
using a force gauge or similar tool to apply the specified tension.
LS3-B:
U2 belt tension: 34.5N (3.5±0.25 kgf)
Axial tension (pulling force): 69N (7.0 ± 0.5 kgf)
LS6-B:
U2 belt tension: 62.5N (6.3±0.5 kgf)
Axial tension (pulling force): 125N (12.3 ± 0.5 kgf)
3-M4×12
+ Washer
Force gauge
Joint #4
Intermediate Shaft Unit
To
check belt tension with the tension meter, refer to Maintenance: 8
.4 Checking the
Timing Belt Tension
(U1, U2 Belts).
(7)
Mount the Joint #4 motor unit on the
Arm #2 with the U1 belt
around the
pulley.
3-M4×12
＋Washer
Joint #4
Motor Unit
(8)
Loosely secure the Joint #4
motor unit
to the Arm #2
.
Make sure the motor unit can be moved by hand, and it will not tilt when pulled.
If the unit is secured too loose or too tight, the belt will not have the proper tension.
NOTE
Maintenance 8. Joint #4
136 LS3-B/LS6-B Rev.7
(9)
Apply the proper tension to the U1 belt and secure the Joint #4 motor unit.
P
ass a suitable cord or string around the Joint #4 motor unit near its mounting plate.
Then, pull the cord using
a force gauge or similar tool to apply the specified tension
shown in the figure on
the right.
LS3-B:
U1 belt tension: 19.5N (2.0±0.5 kgf)
Axial tension (pulling force): 39 N (4.0 ± 0.5 kgf)
LS6-B:
U1 belt tension: 28N(2.8±0.5kgf)
Axial tension (pulling force):56 N (5.7 ± 0.5 kgf)
3-M4×12
+ Washer
Force Gauge
Joint #4
Motor Unit
To
check belt tension with the tension meter, refer to Maintenance: 8
.4 Checking the
Timing Belt Tension
(U1, U2 Belts).
(10)
Put the Joint #3 motor unit back in the
arm.
3-M4×15
+Washer
Joint #3
Motor Unit
(11)
Pass the brake cable and
over-
excitation power supply
through the Z
belt.
Set the Z belt around the Z1 pulley and
Z2 pulley, with the gear grooves of the
belt fitting into grooves of the pulleys
completely.
(12)
Loosely secure the Joint #3 motor unit to Arm #2.
Make sure
the motor unit can be moved by hand, and it will not tilt when pulled. If
the unit is
secured too loose or too tight, the belt will not have the proper tension.
NOTE
NOTE
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 137
(13)
Apply the proper tension to the Z belt and secure the Joint #3 motor unit.
Pass a suitable cord or string around
the Joint #3 motor unit near its mounting plate.
Then, pull the cord using a force gauge or
similar tool to apply the specified tension.
Z belt tension: 34.5 N (3.5 ± 0.5 kgf)
Axial tension (pulling force) :69 N (7.0 ± 0.5 kgf)
3-M4×15
+ Washer
Force Gauge
Joint #3
Motor Unit
To
check belt tension with the tension meter, refer to Maintenance: 7
.4 Checking the
Timing Belt Tension
(Z Belt).
(14)
Remove the control board
.
For details, refer to
Maintenance: 11.3 Replacing the Control Board.
(15)
Connect the following connectors.
C
onnectors: X33, X41,X51, X241
BR4 (Only for LS6-B)
(16)
Mount the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(17)
Bind
the cables with a wire tie in their original positions
as before removed in the
removal step (7).
Do not allow unnecessary strain
on the cables.
(18)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(1
9)
Check if the Joint
#3, #4
moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with MotorON and the following errors are detected,
E
rror 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint
#3, #4
moves, the connector for the other joint might
be
connected to the Joint#3, #4 motor. Check the connector connection.
(
20)
Execute the calibration for Joint #3
, #4.
For details on the calibration method, refer to
Maintenance: 13. Calibration.
NOTE
Maintenance 8. Joint #4
138 LS3-B/LS6-B Rev.7
8.2.2 U1 Belt
U1 belt
Removal
(1)
Remove the Joint #4 motor unit.
Follow the removal steps in
Maintenance:
8.2.1 U2 Belt
.
Joint #4
Motor Unit
3-M4×12
+Washer
(2)
Remove the J
oint #4 intermediate
shaft unit.
Refer to the removal steps in
Maintenance
: 8.2.1 U2 Belt.
Joint #4
Intermediate
Shaft Unit
3-M4×12 +Washer
U1 Belt
(3)
Remove the U1 belt.
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 139
U1 belt
Installation
(1)
Keeping the U1 belt on the large pulley of the Joint #4 intermediate shaft unit, set the
U2 belt in the Arm #2 on the small pulley and put them on the Arm
#2 upper surface.
Make sure the gear grooves of the belts are fit into those of the pulleys completely.
Joint #4
Intermediate
Shaft Unit
3-M4×12
+ Washer
U1 belt
U2 belt
Pulley (Large)
Pulley (Small)
(2)
Loosely secure the Joint #4
intermediate shaft unit.
Make sure the motor unit can be moved by hand, and it will not tilt when pulled.
If the unit is secured too loose or too tight, the belt will not have the
proper tension.
(3)
Apply the proper tension to the U2 belt, and then secure the Joint #4 intermediate
shaft unit.
Pass a suitable cord or string around the Joint #4 intermediate shaft unit near its
mounting plate.
Then, pull the cord using a force gauge or similar tool to apply the
specified tension.
L
S3-B:
U2 belt tension: 34.5 N (3.5 ± 0.25kgf)
Axial tension (pulling force): 69N (7.0 ± 0.5 kgf)
LS6-B:
U2 belt tension: 62.5N (6.3 ± 0.5kgf)
Axial tension (pulling force): 125N (12.3 ± 0.5 kgf)
3-M4×12
+ Washer
Force Gauge
Joint #4
Intermediate Shaft Unit
To
check belt tension with the tension meter, refer to Maintenance: 8.4 Checking the
Timing Belt Tension
(U1, U2 Belts).
NOTE
NOTE
Maintenance 8. Joint #4
140 LS3-B/LS6-B Rev.7
(4)
Loosely secure the Joint #4
motor unit to
Arm #2
.
Make sure the motor unit
can be moved by
hand, and it will not tilt when pulled.
If the unit is secured too loose or too tight,
the belt will not have the proper tension.
Joint #4
Motor Unit
3-M4×12
+Washer
(5)
Apply the proper tension to the U1 belt, and then secure the Joint #4
motor unit.
P
ass a suitable cord or string around the Joint #4 motor unit near its mounting plate.
Then, pull the cord using
a force gauge or similar tool to apply the specified tension
shown in the figure on
the right.
LS3-B:
U1 belt tension: 19.5N (2.0 ± 0.5 kgf)
Axial tension (pulling force): 39 N (4.0 ± 0.5 kgf)
LS6-B:
U1 belt tension: 28N (2.8 ± 0.5kgf)
Axial tension (pulling force): 56 N (5.7 ± 0.5 kgf)
3-M4×12
+ Washer
Force
Gauge
Joint #4
Motor Unit
To
check belt tension with the tension meter, refer to Maintenance: 8.4 Checking the
Timing Belt Tension
(U1, U2 Belts).
(6)
Connect the connector
s.
Connector X241, X41
(
7)
Bind
the cables with a wire tie in their original position as before removed in the
removal
step (5).
(8
)
Remove the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(9
)
Install the
Arm Top Cover.
For details,
refer to Maintenance: 3.1 Arm Top Cover.
NOTE
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 141
(10)
Check if
the Joint #4 moves in a Jog motion by operating from EPSON RC+ menu
-
[Tools]
-[Robot Manager]-[Jog & Teach].
If the Manipulator oscillates with MotorON and the following errors are detected,
E
rror 5041: Motor torque output failure in low power state.
Error 4241: Over speed during low power mode was detected.
or when the joint other than Joint #
4
moves, the connector for the other joint might be
connected to the Joint #
4 motor. Check the connector connection.
(11)
Execute the calibration of Joint #4.
For details, refer to
Maintenance: 13. Calibration.
Maintenance 8. Joint #4
142 LS3-B/LS6-B Rev.7
8.3 Replacing the Brake (for LS6-B series only)
Name
Qty.
Note
Maintenance
parts
Electromagnetic brake 1 1750573
Tools
Hexagonal
wrench
width across flats: 1.5 mm
1
For M3 set screw
width across flats: 2 mm
1
For M2.5 screw
Nippers
1
For cutting wire tie
Material
Wire tie
1
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
NOTE
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 143
Joint #4 brake
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be sure
to keep enough space and prevent the
end effector hitting any peripheral equipment.
LS
6-B: The brake release switch is applied to both Joint #3 and #4. When the brake
release switch is pressed, the respective
brake for Joints #3 and #4 are released
simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is
being
pressed because the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(5)
Disconnect the connector
.
Connector BR4
(6)
Cut off the wire tie banding brake cables.
(7)
Remove the rubber cap.
Rubber Cap
(8)
Remove the brake hub.
2-M2.5×25
Brake Hub
Brake M3×4 Set Screws
+ Bushing
(9)
Remove the brake.
Maintenance 8. Joint #4
144 LS
3-B/LS6-B Rev.7
Joint #4 brake
Installation
(1)
Mount the brake to the Joint #4
intermediate shaft unit.
2-M2.5×25
Brake Hub
Brake
M3×4 Set Screws
+ Bushing
(2)
Mount the brake hub to the Joint #4
intermediate shaft unit.
(3)
Mount the rubber cap.
Insert
the rubber cap until the cable part of
the
brake. If the cables get inside the
rubber cap, the cables may be
disconnected
.
Rubber Cap
Rubber Cap
Rotator part
(Brake Hub)
(4)
Connect the connector
.
Connector BR4
(5)
Re
-bundle the cables in their original positions with a wire tie removed in step (6).
Do not
allow unnecessary strain on the cables.
(6)
Install the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
NOTE
Maintenance 8. Joint #4
LS
3-B/LS6-B Rev.7 145
8.4 Checking the Timing Belt Tension (U1, U2 Belts)
Name
Qty.
Note
Tool Sonic tension meter 1
Fo
r details of usage and measurement methods of the tension
meter, refer to the instruction manual of the tension meter.
Joint #4
Belt tension
check
(1)
Enter appropriate setting values to the sonic tension meter.
Belt
Unit mass M
[g/ (1 mm width ×1 m
length)]
Width
W
[mm]
Span S
[mm]
LS3-B
U1 belt
1.3
10
45
U2 belt
1.3
16
92
LS6-B
U1 belt
1.3
10
55
U2 belt
2.6
20
169
(2)
Strum the U2 belt and measure tension.
Measurement failure may occur if the
microphone touches the belt during
measurement.
(3)
Remove the rubber plug from the hole
on
the Arm #2.
(4)
Strum the U1 belt and measure tension.
For
LS6-B, insert the microphone of the
tension meter to the hole on the Arm to
measure tension.
Measurement failure may occur if the
microphone touches the belt during
measurement.
NOTE
NOTE
Maintenance 9. Bellows
146 LS3-B/LS6-B Rev.7
9. Bellows
The bellows for LS3-B401C are provided in a unit of one piece. The upper and lower
bellows have the same shape.
The bellows for LS6-B*02C are provided in a unit of two pieces. The shape varies
between the upper and lower bellows.
A large amount of dust is emitted when replacing the bellows.
Take the Manipulator to an outer room such as the room in front of the clean room’s entrance,
or take the necessary countermeasures to prevent dust emission before replacing the bellows.
Name
Qty.
Note
Maintenance
parts
Bellows 1
LS3-B401C: 1513008
LS6-B*02C: 1639708
Tools
Cross-point screwdriver 1 For clamp band removal
Bellows
Clamp band
Bellows
Clamp band
Clamp band
Bellows
Removal
(1)
Remove the
cables and tubes from the end effector.
(2)
Remove the end effector.
(3)
Turn ON the controller. Stop motor excitation. (MOTOR OFF)
(4)
L
oosen the two clamp bands on the bellows.
(5)
Pull
out the bellows and clamp bands from the shaft.
NOTE
Maintenance 9. Bellows
LS
3-B/LS6-B Rev.7 147
Bellows
Installation
(1)
To attach the upper
bellows, move the shaft to its lower limit.
To attach the lower bellows, move the shaft to its upper limit.
To move the shaft up/down, press and hold the brake release switch.
Be sure to keep enough space and prevent the
end effector
hitting any peripheral
equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release switch is
pressed, the respective brake of the Joint #3
is released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch
is
being pressed because the shaf
t may be lowered by the weight of an end
effector.
(2)
Pass the shaft through the bellows
from the larger joint.
(3)
Secure the cover side of the bellows.
The bellows has two joints:
The larger joint must be attached to the cover
side.
The
smaller joint must be attached to the end
face side of the shaft.
Attach the mounting part of the bellows
until the
end touches the
cylindrical part of the cover.
Then, secure them with clamp bands.
Upper bellows cover side
Bottom bellows cover side
(4)
Secure the
shaft edge side of the bellows.
C
over the bearing case (black) on the edge of the
shaft with
the bellows mounting part.
Then, secure them with clamp bands.
Upper bellows
shaft edge
Bottom bellows
Shaft edge
(5)
When
completed the bellows installation, check that the bellows stretch
smoothly
without any excessive force
by moving the shaft up/down by hand and rotating
the
Joint #4.
Maintenance 9. Bellows
148 LS3-B/LS6-B Rev.7
(6)
Turn OFF the
Controller and peripheral equipment.
(7)
A
ttach the end effector.
(8)
C
onnect the cables and tubes to the end effector.
Maintenance 10. Ball Screw Spline Unit
LS
3-B/LS6-B Rev.7 149
10. Ball Screw Spline Unit
W
ARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power
ON is extremely hazardous and may result in serious bodily injury as
the Manipulator may move abnormally, and also may result in
electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
After parts have been replaced (motors, reduction gear units, brakes, timing belts, ball screw
spline unit, etc.), the Manipulator cannot operate properly because a mismatch exists
between the origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
The process of aligning the two origins is called “Calibration”.
Refer to Maintenance: 13. Calibration to perform the calibration.
10.1 Greasing the Ball Screw Spline Unit
Name
Qty.
Note
Grease
For Ball Screw Spline Unit
(AFB grease)
Proper
quantity
Tools
Wiping cloth 1
For wiping grease
(Spline shaft)
Cross-point screwdriver 1
For clamp band removal
Only for Cleanroom-model
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
NOTE
NOTE
Maintenance 10. Ball Screw Spline Unit
150 LS3-B/LS6-B Rev.7
10.1.1 Standard-model
Cover the surrounding area such as the end effector and peripheral equipment in case the
grease drips.
(1)
Turn ON the
Controller. Stop motor excitation. (MOTOR OFF)
(2)
Move the arm to a position where Joint #3 can be moved in full stroke.
(3)
Move the shaft to its uppe
r limit manually while
pressing the brake release switch.
Brake Release
Switch
(4)
Turn OFF the Controller.
(5)
Wipe off the old grease from the upper part of the
shaft, and then apply new grease to it.
When applying the new grease to
the upper part of
the shaft, directly fill the grooves on it by hand
.
Wipe off excess grease
from the shaft.
(6)
Turn ON the Controller.
(7)
Move the shaft to its lower limit by hand while pressing the brake release switch.
(8)
Wipe off the old grease from the lower part of the shaft, and then apply new grease to
it.
When applying the new grease to the lower part of the shaft, directly fill the grooves
on it by hand
. Wipe off excess grease from the shaft.
(9)
Move the
shaft up and down several
times while pressing the brake release switch to
smooth out the grease on the shaft.
Wipe off excess grease from the shaft.
When wiping off the excess grease from the upper part of shaft, turn OFF the
Controller and remove the Arm Top Cover.
For details,
refer to Maintenance: 3.1 Arm Top Cover.
Maintenance 10. Ball Screw Spline Unit
LS
3-B/LS6-B Rev.7 151
10.1.2 Cleanroom-model
Cover the surrounding area such as the end effector and peripheral equipment in case the
grease drips.
Upper Part
of the Shaft
(1)
Turn ON the
Controller. Stop motor excitation. (MOTOR OFF)
(2)
Move the arm to a position where Joint #3 can be moved in full stroke.
(3)
Move the shaft to
the lower limit manually while
pressing the brake release switch.
Brake Release Switch
(4) Clamp Band
(4)
Loosen the clamp band
under the bellows, and
then lift the bellows.
(5)
Move the shaft to the upper limit manually while
pressing the brake release switch.
(6)
Wipe off the old grease from the upper part of the
shaft, and then apply new grease.
Directly fill the
grooves on the shaft inside the
bellows with grease by hand.
Wipe off excess grease
from the shaft.
(6) Shaft
(7) Clamp Band
Lower Part
of the Shaft
(7)
Loosen the clamp band on the bellows, and then
move the bellows downward.
(8)
Move the shaft to
the lower limit manually while
pressing the brake release switch.
(9)
Wipe off the old grease from the lower part of the
shaft, and then apply new grease
.
Directly fill the grooves on the shaft inside the
bellows with grease by
hand.
Wipe off excess grease
from the shaft.
(9) Shaft
(10)
Move the
shaft up and down several times while
pressing the brake release switch to
smooth out the
grease on the shaft.
Wipe off excess grease from
the shaft.
(11)
Secure the bellows.
To attach the upper
bellows, move the shaft to its lower limit.
To attach the lower bellows, move the shaft to its upper limit.
To move the shaft up/down, press and hold the brake release switch.
Attach the mounting part of the bellows
until it touches the cylindrical
part of the cover.
Then, secure them with clamp bands.
Maintenance 10. Ball Screw Spline Unit
152 LS3-B/LS6-B Rev.7
10.2 Replacing the Ball Screw Spline Unit
LS3-B: A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down
due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
LS6-B: A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down and rotating due to the weight of the end effector while the power to the
Controller is OFF or while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
Name
Qty.
Note
Maintenance
parts
Ball Screw Spline Unit 1
Each manipulator model
(Refer to Maintenance:
14. Maintenance parts)
Grease
For Ball Screw Spline Unit
(AFB grease)
Proper
quantity
Tools
Hexagonal
wrench
(width across flats: 3 mm) 1 For M4 screw
Torque wrench
1
Nippers
1
For cutting wire tie
Cross-point screwdriver 1 Only for Cleanroom-model
Force gauge
Sonic tension meter
1
Axial tension (pulling force)
LS3B:
Z : 69 N (7.0 ± 0.5kgf)
U1 : 39 N (4.0 ± 0.5 kgf)
U2 : 69N (7.0 ± 0.5 kgf)
LS6B:
Z : 69 N (7.0 ± 0.5kgf)
U1 : 56 N (5.7 ± 0.5kgf)
U2 : 125 N (12.3 ± 0.5 kgf)
Suitable cord (Length about 1000 mm)
1
For belt tension
Wiping cloth 1
For wiping grease
(Spline shaft)
Material
Wire tie
-
NOTE
Maintenance 10. Ball Screw Spline Unit
LS
3-B/LS6-B Rev.7 153
Ball
Screw
S
pline Unit
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pre
ssing the brake release switch.
Be sure to keep enough space and prevent
the end effector hitting any
peripheral
equipment.
LS3
-B: The brake release switch is applied to Joint #3.
When the brake release switch is pressed, the respective brake of the Joint #3 is
released.
Be careful of the shaft falling while the brake release switch is
being pressed
because the shaft may be lowered by the weight of an end effector.
LS
6-B: The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is p
ressed, the respective brakes of the Joint #3
and Joint #4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch
is
being pressed because
the shaft may be lowered by the weight of an end effector.
(3)
Turn OFF the Controller.
(4)
Detach the wires/tubes from the end effector, and remove the end effector.
(5)
This s
tep is only for Cleanroom-model.
Remove the
bellows. For details, refer to Maintenance: 9. Bellows.
(6)
Remove the
Arm Top Cover and Arm Bottom Cover.
For details, refer to
Maintenance: 3. Covers.
(7)
Remove the following.
Joint # motor unit Joint #4 motor unit Joint #4 intermediate pulley
U1 belt U2 belt Z belt
F
ollow the U2 belt removal steps in Maintenance: 8.2 Replacing the Timing Belt.
(8)
Remove three screws mounting the spline
plate.
3-M4×12
4-M4×12
(9)
Remove four screws mounting the spline nut.
(10
)
Pull out the following toward the Arm #2 upper side.
Ball screw spline unit Z belt U2 belt
Maintenance 10. Ball Screw Spline Unit
154 LS3-B/LS6-B Rev.7
Ball Screw
Spline Unit
Installation
(1)
Insert a new ball screw spline unit in the Arm #2.
(2)
Secure the spline nut from the bottom side of
the Arm #2.
4-M4×12
(3)
Mount the following.
Joint #3 motor unit / Joint #4 motor unit / Joint #4 intermediate pulley /
U1 belt / U2 belt / Z belt
Follow
the U2 belt installation steps in Maintenance: 8.2 Replacing the Timing Belt.
(4)
Mount the Arm Top Cover and Arm Bottom Cover.
For details, refer to
Maintenance: 3. Covers.
(5)
Grease the shaft.
For details, refer to
Maintenance: 10.1 Greasing the Ball Screw Spline Unit.
(6)
For the Cleanroom-model, mount the bellows.
For details, refer to
Maintenance: 9. Bellows.
(7)
Mount the end effector, cables, and tubes.
(8)
Perform the calibration of Joints #3, #4.
For details, refer to
Maintenance: 13. Calibration.
Maintenance 11. Boards
LS
3-B/LS6-B Rev.7 155
11. Boards
W
ARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipulator may mo
ve abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
Name
Qty.
Note
Maintenance
parts
Converter board
1
2196970
Control board
1
2198655
Tools
Nippers
1
For cutting wire tie
Cross-point screwdriver (#1)
1
Material
Wire tie
1
For fixing cables
Maintenance 11. Boards
156 LS3-B/LS6-B Rev.7
11.1 Replacing the Converter Board
Board which supplies power to the encoder of the motor is mounted inside the base of the
manipulator. If the board gets damage, the manipulator will not operate.
Converter board
Removal
(1)
Turn OFF the
controller.
(2)
Remove the Connector Plate.
For details, refer to
Maintenance: 3.3 Connector Plate.
(3)
Disconnect
the connectors which are connected to the
converter board.
Connectors: CV11
, CV12, CV13
Converter board
(4)
Remove the
converter board from the mount base.
Binding head small screws:
2-M3 (cross-point screwdriver)
Converter board
2-M3
Binding head
small screws
Maintenance 11. Boards
LS
3-B/LS6-B Rev.7 157
C
onverter board
Installation
(1)
Mount the
converter board on the mount base.
Binding head small screws:
(2-M3)
Converter board
2-M3
Binding head
small screws
(2)
Connect the connectors to
the converter board.
Connectors: CV11, C
V12, CV13
(3)
Mount the Connector Plate.
For details, refer to
Maintenance: 3.3 Connector Plate.
(4)
Turn ON the Controller.
(5)
Make sure no
errors occur in all joints.
Maintenance 11. Boards
158 LS3-B/LS6-B Rev.7
11.2 Replacing the Control Board
Control
Board
Removal
(1)
Turn OFF the controller.
(2)
Remove the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(3)
Disconnect the connector.
Connector: X51
(4)
Remove the Control board.
LS3-B: 3-M3×8 Pan head screws (Small)
LS6-B: 4-M3×8 Pan head screws (Small)
Control board
Connecter
Control Board
Installation
(1)
Mount a new Control board.
Be careful of the board
direction.
(Check the board direction by
the
connector position.)
(2)
Connect
the connector.
Connector: X51
(3)
Mount the Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(4)
Turn ON the controller.
Maintenance 12. LED Lamp
LS
3-B/LS6-B Rev.7 159
12. LED Lamp
W
ARNING
■
Do not connect or disconnect the motor connectors while the power to the robot
system is turned ON. Connecting or disconnecting the motor connectors
with
the power ON is extremely hazardous and may result
in serious bodily injury as
the Manipula
tor may move abnormally, and also may result in electric shock
and/or malfunction of the robot system.
■
To shut off power
to the robot system, disconnect the power plug from the power
source. Be sure to connect the AC power cable to a power receptacle.
DO NOT connect it directly to a factory power source.
■
Before performing any replacement procedure, turn OFF the Controller and
related equipment,
and then disconnect the power plug from the power source.
Performing any replacement procedure with the power ON is extremely hazardous
and may result in
electric shock and/or malfunction of the robot system.
Name
Qty.
Note
Maintenance
parts
LED Lamp 1
LS3-B: 2198273
LS6-B: 2077258
Tools
Cross-point screwdriver
1
For wire removal
Nippers
1
Material
Wire tie 1
LED Lamp
Removal
(1)
Remove the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(2)
Remove the
User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(3)
LS3
-B:
Disconnect the connector from LED.
Connector: X22
LS6
-B:
Disconnect the X1 and X2 terminals from
the LED.
X2 Terminal
(LS6-B)
X1 Terminal
(LS6-B)
Lens
Lens Holder
Ring
LED
Connector: X22
(LS3-B)
(4)
Turn the lens
counterclockwise to remove.
Then, turn the lens holder counter
clockwise
to remove.
(5)
Remove the LED and ring from the User
Plate.
Maintenance 12. LED Lamp
160 LS3-B/LS6-B Rev.7
LED Lamp
Installation
(1)
LS3
-B:
Connect the connector to LED.
Connector: X22
LS6
-B:
Connect the X1 and X2 terminals to the LED.
Each terminal must be connected to the same terminal number on the LED.
(2)
Put the User Plate between the ring and lens holder, and then secure the LED to the
cover.
(3)
Mount the lens.
(4)
Mount the User Plate.
For details, refer to
Maintenance: 3.5 User Plate.
(5)
Install the
Arm Top Cover.
For details, refer to Maintenance: 3.1 Arm Top Cover.
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 161
13. Calibration
13.1 About Calibration
After parts have been replaced (motors, reduction gear units, timing belts, etc.), the
Manipulator cannot execute the positioning properly because a mismatch exists between the
origin stored in each motor and its corresponding origin stored in the Controller.
After replacing the parts, it is necessary to match these origins.
The process of aligning the two origins is called “Calibration”. Note that calibration is not
the same as teaching*.
*: “Teaching” means to teach the Controller coordinate points (including poses) anywhere
in the operating area of the Manipulator.
WARNING
■
To ensure safety, a safeguard must be installed for the robot
system.
For details on the safeguard, refer to EPSON RC+ User’s Guide
: 2.4 Installation
and Design Precautions
.
■
Before operating the robot system, make sure that no one is inside the
safeguard
ed area. The robot system can be operated in the mode for teaching
even when someone is inside the safeguard
ed area.
The motion of the Manipulator is always in restricted (low speeds and low power)
status to secure the safety of an operator. However, operating the robot system
while someone is inside the safeguar
ded area is extremely hazardous and may
result in serious safety problems in case that the Manipulator moves
unexpectedly.
Command Input
Calibration procedures include the process to input commands. Select EPSON RC+ menu-
[Tools]-[Command Window] to use the command window.
The information above is omitted in the calibration procedure.
Jog Motion
The process to set the jog motion is included in the [Jog & Teach] page of the Robot Manager.
Select EPSON RC+ menu-[Tools]-[Robot Manager] and select the [Jog & Teach] tab to use
the [Jog & Teach] page.
The page above is indicated as [Jog & Teach] in the calibration procedure.
Maintenance 13. Calibration
162 LS3-B/LS6-B Rev.7
13.2 Calibration Procedure
EPSON RC+ has a wizard for calibration.
This section indicates the calibration using the calibration wizard of EPSON RC+.
The same calibration procedure is used for each joint.
The follow the steps below are calibration using Joint #1. Follow the steps below to
calibrate other joints.
When coordinates for the Manipulator working point require calculation, it is important for
Joint #2 to be calibrated accurately. Execute the procedure in “Calibration Using Right /
Left Arm Orientations” to accurately calibrate Joint #2. For details, refer to Maintenance:
13.3 Accurate Calibration of Joint #2.
When calibrating Joint #4, you must calibrate Joint #3 and #4 at the same time. Yo u c annot
calibrate Joint #4 alone because of the structure of the Manipulator.
If Err9716 or 5016 (Power supply failure of the absolute encoder. Replace the battery.
Check the robot internal wiring) occurs, apply the procedure of 13.4 Calibration Procedure
without using Calibration Wizard - 3. Encoder Initialization and then, start the calibration
wizard.
The reference point (a point to check the accuracy) needs to be specified for calibration.
(1) Start the calibration wizard.
i. Select EPSON RC+ 7.0 menu - [Setup] to display the [System Configuration]
dialog.
ii. Select [Robots]-[Robot**] to display [Calibration].
iii. Select the joint and click the <Calibrate…> button.
NOTE
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 163
(2) Confirm the warning message and click the <Yes> button.
(3) Move the joint to calibrate manually to approximate zero position, as shown in the
dialog. After moving the joint click the <Next> button.
0 pulse position of Joint #1:
position aligned with X-axis in
Robot coordinate system
0 pulse
+
−
0 pulse position of Joint #2:
position where Arms #1 and #2
are in a straight line
(Regardless of the Joint #1
direction.)
0 pulse
+
−
Maintenance 13. Calibration
164 LS3-B/LS6-B Rev.7
0 pulse position of Joint #3:
upper limit position in motion
range
The height of Joint #3 (shaft) depends on manipulator model.
LS3-B401S
LS3-B401C
LS6-B*02S
LS6-B*02C
0 pulse position of Joint #4:
position where the flat surface
on the shaft faces toward the tip
of Arm #2
Flat surface
0 pulse
+
−
(4) Click the <Yes> button to reset the encoder.
(5) Reboot the Controller.
* This window will disappear when the Controller starts up.
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 165
(6) Select the reference point to use for calibration, and click the <Next> button.
Select a point from the
current points to use for
checking the accuracy.
(7) Click the <Jog…> button to display the [Jog & Teach] dialog.
Maintenance 13. Calibration
166 LS3-B/LS6-B Rev.7
(8) Jog the end effector to approximate reference point in the [Jog & Teach] dialog for
rough calibration. Then click the <OK> button.
Before operating the robot, open the [Control Panel] and click on the <Motor ON>
button.
Move the end effector from the zero pulse position to the approximate reference point
where rough calibration will be executed at by the jog motion. Position gap may occur
if the end effector is not moved by the jog motion.
(9) Click the <Next> button.
NOTE
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 167
(10) The manipulator moves to the reference point. Click the <Execute> button.
Input JUMP P0:z(0).
↑
Point selected in step (6)
(11) Confirm the message and click the <Yes> button.
(12) After the manipulator moves to the reference point, click the <Next> button.
Maintenance 13. Calibration
168 LS3-B/LS6-B Rev.7
(13) Jog to the accurate reference position.
(14) Jog the end effector to approximate reference point in the [Jog & Teach] dialog for
rough calibration. Then click the <OK> button.
* Position Joint #2 only and move Joint #3 to around 0 pulse.
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 169
(15) Click the <Next> button.
(16) Execute the procedure in “Calibration Using Right / Left Arm Orientations” to
accurately calibrate Joint #2.
Go on to the step (17) for the other joints calibration.
i. Move to another point that has different pose (from righty to lefty) using Jump
command. Click the <Yes> button.
ii. Jog to the accurate reference position.
Maintenance 13. Calibration
170 LS3-B/LS6-B Rev.7
iii. Jog to the accurate reference position and adjust the position. Click the <OK> button.
iv. Click the <Next> button.
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 171
(17) Calibration is complete. Click the <Finish> button.
(18) Move the manipulator to other points and check if it can move without problems.
Teach points where appropriate.
Maintenance 13. Calibration
172 LS3-B/LS6-B Rev.7
13.3 Accurate Calibration of Joint #2
When coordinates for the Manipulator working point require calculation, it is important for
Joint #2 to be calibrated accurately.
If the accuracy of Joint #2 is not obtained through the steps in the section Maintenance: 13.2
Calibration Procedure, follow the steps below “Calibration Using Right / Left Arm
Orientations” to accurately calibrate Joint #2.
The reference point is the center of the ball screw
spline shaft during this calibration.
When there is a misalignment between the center
of the end effector and the center of the ball screw
spline shaft, remove the end effector and execute
the calibration of the shaft.
The center of the shaft
There is a misalignment
between the center of
the end effector and the
center of the shaft.
Make a calibration jig as shown in the right figure
and attach it on the end of the shaft to make the
center of the shaft clear.
Decide a target point and mark a cross (
×
) on it
so that you can easily verify the center of the
shaft after switching the arm pose between right
and left.
Calibration jig at the
end of the shaft
(Example)
Target point
The center
of the shaft
After removing the end effector and
executing the calibration
, install the end effector and
move the Manipulator to the teaching point to verify whether there is a positional gap. If
there is a positional gap, fine
-tune the installat
ion position of the end effector and teach the
point again.
Coordinates for the working point requires calculation in the following cases:
· Teaching the working point by entering the coordinate values (MDI teaching)
· Switching the arm orientation between right and left at a given point
· Using the Pallet command
· Executing CP control (such as liner or circular interpolation)
· Using the Local command
· Pose data specified with relative coordinates <Example: P1+X(100) >
· Vision Guide camera calibrations
NOTE
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 173
Calibration Using Right / Left Arm Orientations
(1)
Check the point data for calibration
Use
a point you can easily verify the accuracy within the work envelop of
both right
and left arm
. Then, check the number of points you want to use.
(2)
EPSON RC+ menu
-[Tools]-[Robot Manager]-[Control Panel] and
click the MOTOR
ON.
(3)
Click the
<Free All> button
to free all joints from servo control. Now, you can move
arms by hands.
(4)
Move the arms to the
position of point data for calibration in rightly arm orientation.
(5)
From the current position, teach any point data number unused.
This
point is now called P1.
Specify the point number
“1” and click the <Teach> button in the [Jog & Teach].
(6)
Click
the Lock All in the [Control Panel] to lock all joints under servo control.
(7)
Switch to the lefty arm orientation. Then, move the arm to the same point.
>Jump P1/L:Z(0) ' Change the arm orientation from righty to lefty
Z is the maximum position
* If there is interference on the way from right to lefty, click the Free All in the [Control
Panel] and change the arm orientation to lefty by hands. Then, go to the step (6),
(7).
(8)
The
joints are slightly out of position.
Adjust the gap with the
−
Z in the Jogging group in the [Jog & Teach]. Then, teach
another point data number unused.
This point is now called P2.
Specify point number
“P2” and click the <Teach> button in [Jog & Teach].
(9)
Input the new Hofs value.
>
Hofs Hofs (1), Hofs (2) + (Ppls(P1,2) + Ppls(P2,2)) /
2, Hofs(3), Hofs(4)
(10)
From the current lefty arm
orientation
(the position in the step (8)), teach the point data
number used in the step (8).
This point is called P2.
Specify point number
“P2” and click the <Teach> button in [Jog & Teach].
(11)
Switch to the righty arm orientation. Then, make sure the manipulator move to the
correct position.
>Jump P2/R ' Change the arm orientation from lefty to righty
* If there is any interference on the way from lefty to righty, click the Free All in the
[Co
ntrol Panel] and change the arm orientation to righty by hands. Then, go to the
step (6), (11).
(12)
Move the manipulator to other point data and make sure it moves to the correct position.
Teach some more points if required.
* Delete the two points taught for the Joint #2 calibration.
Maintenance 13. Calibration
174 LS3-B/LS6-B Rev.7
13.4 Calibration Procedure without using Calibration Wizard
This section indicates the calibration without using the calibration wizard of EPSON RC+.
For details of calibration using the calibration wizard, refer to Maintenance: 13.2
Calibration Procedure.
When coordinates for the Manipulator working point require calculation, it is important for
Joint #2 to be calibrated accurately. Execute the procedure in “Calibration Using Right /
Left Arm Orientations” to accurately calibrate Joint #2. For details, refer to Maintenance:
13.3 Accurate Calibration of Joint #2.
You cannot calibrate Joint #4 alone because of the structure of the Manipulator. When
calibrating Joint #4, you must calibrate Joint #3 and #4 at the same time.
The reference point (a point to identify the position of the manipulator) needs to be specified
for calibration.
Follow steps
1 to 6 described below in order to calibrate the origin.
1.
Basic Pose Confirmation
(1
)-1 After the part replacement, execute the calibration using the
point data currently
registered.
Confirm the point data number (P*) to reconstruct the correct manipulator
position.
* Point data before the parts replacement
(motor, reduction gear, belt, etc.) is
necessary for the calibration.
2.
Part Replacement
(2)
-1 Replace parts as dictated by this manual.
* Be careful not to injure yourself or damage parts during part replacement.
3.
Encoder Initialization
(3)
-1 Turn ON the Controller when all joints are in the motion range.
(3)
-2 Manually move the joint that needs origin alignment to its
approximate 0 pulse
position.
0 pulse position of Joint #1:
position aligned with X-axis in
Robot coordinate system
0 pulse
+
−
NOTE
NOTE
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 175
0 pulse position of Joint #2:
position where Arms #1 and
#2 are in a straight line
(Regardless of the Joint #1
direction.)
0 pulse
+
−
0 pulse position of Joint #3:
upper limit position in
motion range
The height of Joint #3 (shaft) depends on manipulator model.
LS3-B401S
LS3-B401C
LS6-B*02S
LS6-B*02C
0 pulse position of Joint #4:
position where the flat surface
on the shaft faces toward the tip
of Arm #2
Flat surface
0 pulse
+
−
Maintenance 13. Calibration
176 LS3-B/LS6-B Rev.7
(3)
-3 Connect EPSON RC+ to the Controller.
Select a robot to be calibrated. Input as below in the [Command Window]
and execute it.
(This example uses “robot 1”.)
> robot 1
(3)
-4 Execute the absolute encoder initialization command.
Input one of the following commands
to [Command Window] according to the
joint being calibrated.
Joint #1:
>EncReset 1
Joint #2:
>EncReset 2
Joint #3:
>EncReset 3
Joint #4:
>EncReset 3, 4
(3)
-5 Reboot the Controller.
Select EPSON RC+ menu-[Tools]-
[Controller] and click the <Reset
Controller> button.
* This window will be disappeared when the Controller starts up.
4.
Rough
Calibration
(4)
-1 Execute the following command from the menu-[Tools]-[Command Window].
>calpls 0,0,0,0
* Manipulator does not move.
(4)
-2 Execute one of the following commands according to
the joint you want to
calibrate from the menu-[Tool]-[Command Window].
Joint #1 >calib 1
Joint #2 >calib 2
Joint #3 >calib 3
Joint #4 >calib 3, 4
5.
Calibration
(Accurate Positioning)
(5)
-1 Turn ON the motors from the EPSON RC+ menu -[Tools]-[Robot Manager]
-
[Control Panel].
(5)
-2
Click the <Free All> button to free all joints from servo control. Now, you can
move arms by hands.
Maintenance 13. Calibration
LS3-B/LS6-B Rev.7 177
(5
)-3 Move the Manipulator by hand to a rough
position/posture of the calibration
point data.
(5
)-4 Create the data from the calibration point data.
Enter and execute the following command in [Command Window].
(In this example, P1 is used as the calibration point data.)
> Calpls Ppls(P1,1), Ppls(P1,2), Ppls(P1
,3),
Ppls(P1,4)
(5)
-5 Move the joint to the specified point using a motion command.
For example, when the specified point data is “P1”,
execute “Jump P1:Z(0)” from [Jog & Teach].
* The joint NOT being calibrated moves to the original position.
(5)
-6 Accurately align the joint* being calibrated to the specified point using
jog
commands.
* You must move Joint #3 and #4 to the position when calibrating Joint #4.
Select the jog mode [Joint] from [Jog & Teach] to execute the jog motion.
(5)
-7 Execute the calibration.
Enter and execute one of the following commands in [Command Window]
according to the joint being calibrated.
Joint #1:
>Calib 1
Joint #2:
>Calib 2
Joint #3:
>Calib 3
Joint #4:
>Calib 3, 4
6.
Accuracy Testing
(6)
-1 Move the Manipulator to another point to confirm that
it moves to the same
position.
If it does not move to the same position, re-calibrate using another point.
You
must set the point again
if reproducibility cannot be assured through calibration.
Maintenance 14. Maintenance Parts List
178 LS3-B/LS6-B Rev.7
14. Maintenance Parts List
14.1 LS3-B
Part Name Code Note
Reference:
Maintenance
Overhaul
*3
Cable Unit
LS3-B401*
2200784 4.1 -
AC Servo Motor
Joint #1
2201471
200 W (with oil seal) 5.1
Joint #2
2201472
100 W 6.1
Joint #3
2201472
100 W 7.1
Joint #4
2201472
100 W 8.1
Reduction Gear
Unit *1
Joint #1
1765520
5.2
Joint #2
1587600
6.2
O-ring
Joint #1
1653181
Supplied with
Joint #1 reduction gear unit
5.1 -
1213267 CO0547A
1520371
CO0538A
Joint #2
1653819
Supplied with
Joint #2 reduction gear unit
6.2 -
1213266
CO0543A
Timing Belt
Joint #3
1554773
Z 7.2
Joint #4
1554775
U1
8.2
1554777 U2
Electromagnetic brake
1750573
Z
7.3
Brake Release Switch 2117817 - -
Bellows
LS3-B401C
1513008 *4 9 -
Ball Screw Spline
LS3-B401S
1792117
150 mm
10.2
LS3-B401C
1792118
120 mm
Converter Board 2196970 11.1
-
Control Board
2198655
11.2
-
LED lamp 2198273 12
-
Grease *2
Ball Screw Spline
:
AFB
-
For purchasing the grease,
please contact the supplier
of your region.
10.1 -
Reduction Gear Unit
:
SK-1A, SK2
5.2, 6.2
6.2
-
Arm Top Cover
1795860
White
3.1
-
Arm Bottom Cover 1769389 Blue 3.1
-
Dust Cover
2014430
For RJ45 connector
-
M/C Cable
2196934 3 m
4.3 -
2196935
5 m
2196936 10 m
Maintenance 14. Maintenance Parts List
LS3-B/LS6-B Rev.7 179
14.2 LS6-B
Part Name Code Note
Reference:
Maintenance
Overhaul
*3
Cable Unit
LS6-B502*
2196931
4.1
-
LS6-B602*
2196932
LS6-B702*
2196933
AC Servo Motor
Joint #1
2201471 200 W (with oil seal) 5.1
Joint #2
2197986 200 W (without oil seal) 6.1
Joint #3
2201472
100W 7.1
Joint #4
2201472
100W 8.1
Reduction Gear
Unit *1
Joint #1
1750570
5.2
Joint #2
1750571
6.2
O-ring
Joint #1
1650901
Supplied with Joint #1
reduction gear unit
5.1 -
1213266
CO0543A
1520371 CO0538A
1510528
CO0551A
Joint #2
1653181
Supplied with Joint #2
reduction gear unit
6.2 -
1213267
CO0547A
Timing Belt
Joint #3
1563316 Z 7.2
Joint #4
1612286
U1
8.2
1763573 U2
Electromagnetic brake
1750573
Z-axis
7.3
1750573 U-axis 7.4
Brake Release Switch
2117817
-
-
Bellows
LS6-B**2C
1639708
*4
9 -
Ball Screw Spline
LS6-B**2S
1767229
200 mm
10.2
LS6-B**2C
1767391
170 mm
Converter Board
2196970
11.1
-
Control Board 2198655 11.2 -
LED lamp
2077258
12
-
Grease *2
Ball Screw Spline:
AFB
-
For purchasing the grease,
please contact the supplier
of your region.
10.1 -
Reduction Gear Unit:
SK-1A
5.2, 6.2 -
Arm Cover 1767403 White 3.1 -
Arm Bottom Cover
1763918
Blue
3.1
-
Maintenance 14. Maintenance Parts List
180 LS3-B/LS6-B Rev.7
Part Name Code Note
Reference:
Maintenance
Overhaul
*3
Dust Cover
2014430
For RJ45 connector
-
M/C Cable
2196934 3 m
4.3 - 2196935 5 m
2196936 10 m
*1 Reduction Gear Unit
A reduction gear unit consists of the following three parts. When replacing the reduction gear unit, be sure
to always replace the waveform generator, flexspline, and circular spline all together as one set.
Waveform generator
This waveform generator consists of an ellipsoidal cam with ball
bearings
on its outer circumference.
The inner ring of bearings is
secur
ed to the cam, while the outer ring
is capable of flexible deformation through the ball bearings.
Circular spline
Flexspline
Waveform generator
Flexspline
A thin, elastic, cup
-
shaped metal body with gear teeth around the
outer circum
ference of the opening.
Circular spline
A rigid, ring
-shaped body with gear teeth on the inner
circumference.
The circular spline has
two more teeth than the flexspline does.
Splines are greased. Be careful not to let grease adhere to clothes.
*2 Regarding purchase of grease
Due to the chemicals regulations of individual countries (the UN GHS), we are requesting our customers to
purchase the grease required for maintenance from the manufacturers listed in the table below as of April 2015.
Regarding purchase of the grease, please contact the following manufacturers. If there is anything unclear,
please contact the supplier of your region.
Product name
Manufacturer
URL
THK AFB-LF Grease
THK CO., LTD.
http://www.thk.com/
Harmonic Grease
SK-1A, SK-2
Harmonic Drive Systems Inc. http://www.harmonicdrive.net/
*3 Overhaul
As a rough indication, perform the overhaul (parts replacement) before reaching 20,000 operation hours of the
Manipulator. The operation hours can be checked in [Controller Status Viewer] dialog-[Motor On Hours].
For details, refer to Maintenance 2.2 Overhaul (Parts Replacement).
Maintenance 14. Maintenance Parts List
LS3-B/LS6-B Rev.7 181
*4 Bellows
The bellows for LS3-B401C are provided in a unit of one piece. The upper and lower bellows have the same
shape.
The bellows for LS6-B*02C are provided in a unit of two pieces. The shape varies between the upper and
lower bellows.
Maintenance 14. Maintenance Parts List
182 LS
3-B/LS6-B Rev.7
