User Manual
SUN-20K-G04SUN-18K-G04
SUN-25K-G04
Grid-connected PV Inverter
R
1. Introduction - 01 -
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1.1 Appearance Introduction
- 01 -
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2. Safety warnings and instructions
- 03 -
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2.1 Safety signs
- 03 -
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1.2 Parts list
- 02 -
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2.2 Safety instructions
- 03 -
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3. Operation Interface
- 05 -
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2.3 Notes for using
- 04 -
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3.2 Status Indicator
- 05 -
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3.1 Interface View
- 05 -
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3.4 LCD Display
- 06-
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4. Product installation
- 07 -
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3.3 Buttons
- 06 -
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4.1 Select installation location
- 07 -
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5. Electrical Connection
- 11 -
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5.1 DC input terminal connection
- 11 -
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5.2 AC input terminal connection
- 13 -
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5.3 The connection of the ground line
- 16 -
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4.2 Inverter Installation
- 09 -
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- 17 -
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5.4 Max. over current protection device
5.5 Inverter monitoring connection
- 17 -
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5.7 Configuration of Datalogger
- 18 -
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- 18 -
5.6 Installation of datalogger
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6. Startup and Shutdown
- 18 -
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6.1 Start up the inverter
- 19 -
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6.2 Inverter Shutdown
- 19 -
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- 20 -
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7. Zero export function via energy meter
8. General Operation
- 32 -
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8.1 The initial interface
- 35 -
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8.3 System param setting
- 38 -
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8.4 Running param set
- 38 -
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- 57 -
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9. Repair and Maintenance
- 57 -
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10. Error information and processing
- 58 -
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10.1 Error code
- 62 -
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11. Specification
8.5 Protect Param
- 38 -
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8.6 Comm. param set
- 54 -
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8.2 Submenus in the Main Menu
- 36 -
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- 30 -
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7.3 Notes while using zero export function
- 29 -
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7.2 Use of zero-export function
- 30 -
7.4 How to browse the load power of your PV grid-tieplant on monitoring platform
- 20 -
7.1 Multiple strings and parallel connection meters …………………
Photovoltaic Grid-connected System
Applica�on of inverter in photovoltaic power system
Inverter MeteringPV array Power grid
Family load
Read the manual and other related documents before performing any opera�on on the inverter.
Documents must be stored carefully and be available at all �mes. Contents may be periodically
updated or revised due to product development. The informa�on in this manual is subject to
change without no�ce.The latest manual can be acquired via [email protected].
- 01 -
About This Manual
The manual mainly describes the product informa�on, guidelines for installa�on, opera�on and
maintenance. The manual cannot include complete informa�on about the photovoltaic (PV) system.
How to Use This Manual
1. Introduc�on
Pic 1.1 Front view Pic 1.2 Bo�om view
1.1 Appearance Introduc�on
On-grid inverter can convert solar panel DC power into AC power which can directly input to
the grid. Its appearance is shown below. These models contain SUN-18K-G04, SUN-20K-G04,
SUN-25K-G04.
The following is collec�vely referred to as “inverter”.
WIFI
DC SWI TC H
ON
OFF
RS48 5
Mete r
- 02 -
1.2 Parts list
Please check the following table, to see whether all the parts are included in the package：
Wall moun�ng bracket x1
Moun�ng stainless steel
screws M4×12
x5
Grid-�ed PV String Inverter
x1
DC+/DC- Plug connectors
including metal terminal
xN
Stainless steel an�-collision
bolt M6×60
x4
AC power connectors x1
User
manual
User manual x1 Datalogger (op�onal) x1
Meter(op�onal)
x 1
Three-Phase Smart Meter
SET ESC
*Sensor Clamp(op�onal)
x 3
2. Safety warnings and instruc�ons
2.1 Safety signs
2.2 Safety instruc�ons
Improper use may result in poten�al electric shock hazards or burns. This manual contains
important instruc�ons that should be followed during installa�on and maintenance. Please
read these instruc�ons carefully before use and keep them for future reference.
Safety symbols used in this manual, which highlight poten�al safety risks and important safety
informa�on, are listed as follows:
Shock Hazard:
Cau�on, risk of electric shock symbol indicates important safety instruc�ons,
which if not correctly followed, could result in electric shock.
High Temperature Hazard:
Cau�on, hot surface symbol indicates safety instruc�ons, which if not correctly
followed, could result in burns.
Safety Hint:
Note symbol indicates important safety instruc�ons, which if not correctly
followed, could result in some damage or the destruc�on of the inverter.
Warning:
Warning symbol indicates important safety instruc�ons, which if not correctly
followed, could result in serious injury or death.
Shock Hazard:
Prohibit disassembling inverter case, there exis�ng shock hazard, which may
cause serious injury or death, please ask qualified person to repair.
Warning:
Electrical installa�on of the inverter must conform to the safety opera�on rules
of the country or local area.
Warning:
Inverter adopts non-isolated topology structure, hence must insure DC input and
AC output are electrical isolated before opera�ng the inverter.
- 03 -
- 04 -
2.3 Notes for using
The three phase string power inverter is designed and tested under related safety regula�ons.
It can ensure the personal safety of the user. But as a electric device, it may cause shock or
injury by incorrect opera�on. Please operate the unit under below requirements:
1. Inverter should be installed and maintained by qualified person under local standard
regula�ons.
2. Must disconnect the AC side first, then disconnect DC side while doing installa�on and
maintenance, a�er that, please wait at least 5 mins to avoid ge�ng shocked.
3. Local temperature of the inverter may exceed 80 ℃ while under opera�ng. Do not touch
to avoid ge�ng injured.
4. All electrical installa�on must be in accord with local electrical standards, and a�er
obtaining the permission of the local power supply department, the professionals can
connect the inverter to the grid.
5. Please take appropriate an�-sta�c measure.
6. Please install where children can not touch.
7. The steps to start the inverter：1) switch on the AC side circuit breaker, 2) Switch on the
DC side circuit breaker of the PV panel. 3) Turn on the DC switch of the inverter.
The steps to stop the inverter：1) switch off the AC side circuit breaker, 2) switch off the DC
side circuit breaker of the PV panel. 3) Turn off the DC switch of the inverter.
8. Don’t insert or remove AC and DC terminals when the inverter is in normal opera�on.
9. The DC input voltage of the inverter must not exceed the maximum value of the model.
Shock Hazard:
When PV module is exposed to sunlight, the output will generate DC voltage.
Prohibit touching to avoid shock hazard.
Shock Hazard:
While disconnect the input and output of the inverter for maintenance, please
waits for at least 5 mins un�l the inverter discharge the remnant electricity.
High Temperature Hazard:
Local temperature of inverter may exceed 80℃ while under opera�ng.
Please do not touch the inverter case.
- 05 -
3.2 Status Indicator
3. Opera�on Interface
Pic 3.1 Front panel display
3.1 Interface View
ACDC
AlarmNormal
There are four LED status indicator lights in the front panel of the inverter. Please see table 3.1
for details.
Explanaon
Inverter detects DC input
Low DC input voltage
Grid Connected
Grid Unavailable
Under normal opera�ng
Stop opera�ng
Detected faults or report faults
Under normal opera�ng
Indicator status
●DC
●AC
●NORMAL
● ALARM
on
off
on
off
on
off
on
off
Table 3.1 Status indicator lights
- 06 -
3.3 Bu�ons
3.4 LCD Display
There are four keys in the front panel of the Inverter(from le� to right): Esc, Up, Down and
Enter keys. The keypad is used for:
● Scrolling through the displayed op�ons (the Up and Down keys);
● Access to modify the adjustable se�ngs (the Esc and Enter keys).
The two-line Liquid Crystal Display (LCD) is located on the front panel of the Inverter, which
shows the following informa�on:
● Inverter opera�on status and data;
● Service messages for operator;
● Alarm messages and fault indica�ons.
Esc Up Down Enter
- 07 -
4.1 Select installa�on loca�on
4. Product installa�on
To select a loca�on for the inverter, the following criteria should be considered:
WARNING: Risk of fire
● Do not install the inverter in areas containing highly flammable materials or gases.
● Do not install the inverter in poten�ally explosive atmospheres.
● Do not install in small closed spaces where air can not circulate freely. To avoid overhea�ng,
always make sure the flow of air around the inverter is not blocked.
● Exposure to direct sunlight will increase the opera�onal temperature of the inverter and
may cause output power limi�ng. It is recommended that inverter installed to avoid direct
sunlight or raining.
● To avoid overhea�ng ambient air temperature must be considered when choosing the
inverter installa�on loca�on. It is recommended that using a sun shade minimizing direct
sunlight when the ambient air temperature around the unit exceeds 100°F/40℃.
Pic 4.1 Recommended installa�on place
- 08 -
● Install on a wall or strong structure capable of bearing the weight.
● Install ver�cally with a maximum incline of +/-15°. If the mounted inverter is �lted to an
angle greater than the maximum noted, heat dissipa�on can be inhibited, and may result in
less than expected output power.
● If install more than one inverter, must leave at least 500mm gap between each inverter. And
each inverter must be at least 500mm above and below.And must install the inverter at the
place where children cannot touch. Please see picture 4.3.
● Consider whether the installa�on environment is helpful to see the inverter LCD display and
indicator status clearly.
● Must offer a ven�late environment if inverter installed in the air�ght house.
Safety Hint:
Do not place or store any items next to the inverter.
Pic 4.2 Installa�on Angle
≤15°
- 09 -
4.2 Inverter Installa�on
The inverter is designed according to the wall mounted type installa�on, please use the wall
mounted (the brick wall of the expansion bolt) when installing.
Pic 4.3 Installa�on Gap
Pic 4.4 Inverter Installa�on
Anchoring
Moun�ng bracket
Stainless steel screws
Inverter
≥500mm
≥500mm
- 10 -
2. Ensure that the posi�on of the installa�on holes on the wall is in accordance with the
moun�ng plate, and the moun�ng rack is ver�cally placed.
3. Hang the inverter to the top of the moun�ng rack and then use the M4 screw in the
accessory to lock inverter heat sink to the hanging plate, to ensure that the inverter will not
move.
Procedure shows below:
1. Locate on the appropriate wall according to the bolt posi�on on the moun�ng bracket, then
mark the hole.On the brick wall, the installa�on must be suitable for the expansion bolt
installa�on.
Pic 4.5 Inverter hanging plate installa�on
Pic 4.6 Inverter installa�on
- 11 -
5.1 DC input terminal connec�on
5 Electrical Connec�on
Table 5.1 DC Cable Specifica�ons
1. Switch the Grid Supply Main Switch(AC)OFF.
2. Switch the DC lsolator OFF.
3. Assemble PV input connector to the inverter.
Warning:
When using PV modules, please ensure the PV+ & PV- of solar panel is not
connected to the system ground bar
Warning:
Before connec�ng inverter, please make sure the PV array open circuit voltage is
within the 1000V of the inverter.
Safety Hint:
Before connec�on, please make sure the polarity of the output voltage of PV
array matches the “DC+” and “DC-” symbols.
Safety Hint:
Please use approved DC cable for PV system.
Cable type
Range Recommended value
Cross secon（mm ）
Industry generic PV cable
(model: PV1-F)
4.0~6.0
(12~10AWG)
4.0(12AWG)
Pic 5.1 DC+ male connector
Pic 5.2 DC- female connector
- 12 -
The steps to assemble the DC connectors are listed as follows:
a)Strip off the DC wire about 7mm, disassemble the connector cap nut (see picture 5.3).
b) Crimping metal terminals with crimping pliers as shown in picture 5.4.
c) Insert the contact pin to the top part of the connector and screw up the cap nut to the top
part of the connector. (as shown in picture 5.5).
Pic 5.5 connector with cap nut screwed on
Pic 5.3 Disassemble the connector cap nut
7mm
7mm
Pic 5.4 Crimp the contact pin to the wire
- 13 -
5.2 AC input terminal connec�on
d) Finally insert the DC connector into the posi�ve and nega�ve input of the inverter,shown as
picture 5.6
Do not close the DC switch a�er the DC terminal is connected.Connect the AC terminal to the
AC side of the inverter, the AC side is equipped with Three phase AC terminals that can be
conveniently connected. Flexible cords are recommended for easy installa�on. The are as
shown in Table 5.2.
Warning:
Sunlight shines on the panel will generate voltage, high voltage in series may
cause danger to life. Therefore, before connec�ng the DC input line, the solar
panel needs to be blocked by the opaque material and the DC switch should
be 'OFF', otherwise, the high voltage of the inverter may lead to life-
threatening condi�ons.
Warning:
Prohibit using a single circuit breaker for mul�ple inverters, prohibit the
connec�on of load between inverter circuit breakers.
Pic 5.6 DC input connec�on
Table 5.2 Cable informa�on
Outside cable
(3+N+PE)20m
Cable CSAModel Cable outer dia AWG Breaker Max cable length
SUN-18K/20K/
25KW-G04
810mm
20-30mm
40A/400V
Warning:
Please use its own DC power connector from the inverter accessories. Do not
interconnect the connectors of different manufacturers.Max. DC input current
should be 20A. if exceeds, it may damage the inverter and it is not covered by
Deye warranty.
- 14 -
Step 3: Insert the cable (L1, L2, L3, N，PE) into the sealing sleeve.
Step 4: Use the hexagon screwdriver, loosen the bolts of the socket in turn, and insert each
cable core into the corresponding jack, and set each screw. The connec�on hole of AC
connec�on terminal labeling is shown in Picture 5.9.
Warning:
Be careful to dis�nguish the L1, L2,L3,N and PE of the AC cables.
Pic 5.8 Strip AC cable
8~15mm
40mm
Step 1: Remove the cable sealing ring and sleeve in sequence from the AC connector.
Step 2: Use strippers to strip the protec�ve sheath and insula�on layer of the AC cable to
the right length, as shown in Picture 5.8.
The AC output connector is divided into three parts: matching socket, sleeve and sealingsleeve,
as shown in picture 5.7, the steps are as follows:
1
2
3
4
1. Matching socket 2.Sleeve 3.Sealing core 4.Sealing nut
Pic 5.7 AC connector structure
WIFI
DC SWITCH
ON
OFF
RS485
Meter
- 15 -
Step 5 : Set the sleeve and sealing ring in place.
Step 6 : Connect the terminals to the inverter as shown in picture 5.10.
Pic 5.9 AC Connector Hole Pa�ern
Pic 5.10 AC input connec�on
- 16 -
5.3 The connec�on of the ground line
Good grounding is good for resis�ng surge voltage shock and improving EMI perfor-
mance.Therefore, before connec�ng AC, DC and communica�on cables, you need to ground
the cable firstly. For a single system, just ground the PE cable. For mul�ple machine systems,
all PE cables of the inverter need to be connected to the same grounding copper platoon to
ensure the equipoten�al connec�on. The installa�on of the shell ground wire is shown as
picture 5.11.
Warning:
Inverter has built-in leakage current detec�on circuit, If an external leakage
current protec�on device is connected, its opera�ng current must be greater
than 300 mA or higher, otherwise inverter may not work properly.
Pic 5.11The installa�on of the shell ground wire
- 17 -
5.4 Max. over current protec�on device
In order to protect the inverter AC connec�on, it is recommended to install a circuit breaker to
prevent overcurrent. See table 5.3 below.
Table 5.3 Recommended current protector specifica�ons
5.5 Inverter monitoring connec�on
Inverter has the func�on of wireless remote monitoring. The inverter with Wi-Fi func�on is
equipped with Wi-Fi Plug to connect the inverter and network. Wi-Fi Plug's opera�on, installa-
�on, Internet access, APP downloading and other processes are detailed in the instruc�ons.
Pic 5.12 Internet monitoring solu�on
PC
Router
WIFI
GPRS
Web Server
Phone
Rated output
voltage(V)
Inverter
Rated output
current(A)
Current for protecon
device(A)
SUN-18K-G04 220/230 4527.3/26.1A
SUN-20K-G04 220/230 4530.3/29A
SUN-25K-G04 220/230 4537.9/36.2A
WIFI
DC SWITCH
ON
OFF
RS485
Meter
- 18 -
5.6 Installa�on of datalogger
For the configura�on of datalogger, please refer to illustra�ons of the datalogger.
5.7 Configura�on of datalogger
6. Startup and Shutdown
Before star�ng the inverter, make sure that the inverter can meet the following condi�ons,
otherwise it may result in fire or damage to the inverter. In this case, we do not undertake
any responsibility. At the same �me, to op�mize the system configura�on, it is recommended
that the two inputs be connected to the same number of photovoltaic modules.
a). The maximum open circuit voltage of each set of photovoltaic modules shall not exceed
1000Vdc under any condi�ons.
b). Each input of the inverter be�er use the same type of photovoltaic module in series.
c). Total output power of PV shall not exceed the maximum input power of inverter, each
photovoltaic modules shall not exceed the rated power of each channel.
When installing the WiFi s�ck, tear off the sealing strip on the inverter. Insert the datalogger
into the interface and fix it with a screw. The configura�on of the datalogger needs to be
performed a�er various electrical connec�ons have been completed and the inverter DC power
on. When the inverter is on the DC power, it is determined whether the datalogger is normally
electrified (The LED light shines out of the shell).
Pic 5.14 datalogger installa�on diagram
- 19 -
6.1 Start up the inverter
6.2 Inverter Shutdown
When star�ng up the three phase string inverter, should fellow steps below：
1. S tar�ng switch on the AC breaker.
2. Turn on the DC switch of the photovoltaic module, and if the panel provides sufficient
star�ng voltage and power, the inverter will start.
3. The inverter will first check the internal parameters and the grid parameters, while the
liquid crystal will show that the inverter is self-checking.
4. If the parameter is within acceptable range, the inverter will generate energy.
NORMAL indicator light is on.
Must follow below steps while shu�ng down the inverter:
1. Switch off the AC breaker.
2. Wait for 30 seconds, turn off the DC switch (if any), or simply disconnect the DC input
connector. The inverter will close the LCD and all LED within two minutes.
- 20 -
7. Zero-export func�on via energy meter
There're two kinds of energy meters for this series inverter. First type is Eastron
SDM630-Modbus V2 which is able to measure the Max. 100A current directly. More details
please refer to Pic 7.1 & 7.2. For the Eastron SDM630 MCT 40mA, it needs external CT to
measure the current. The CT power range is from 5A-2000A. More details about the Eastron
SDM630 MCT, please refer to Pic 7.3 & 7.4. Also, the CHNT meter DTSU666 is supported, it can
measure the Max. 80A current directly. More details about the DTSU666, please refer to Pic
7.5 & 7.6.
When you are reading this, we believe that you have completed the connec�on according to
the requirements of chapter 5, if you have been running your inverter at this �me, and you
want to use the zero-export func�on, please turn off AC and DC switch of the inverter, and
wait for 5 minutes un�l the inverter completely discharged.Please follow below Picture 7.1
to connect the energy meter.
For system wiring diagram, the red line refers to L line (L1, L2, L3), the black line refers to the
neutral line (N). Connec�ng energy meter RS485 cable to inverter's RS485 port. It's recommended
to install an AC switch between the inverter and the u�lity grid, the specs of the AC switch are
determined by the power of load.
If there is no integrated DC switch inside the inverter you purchased, we commend you to
connect the DC switch. The voltage and current of the switch depend on the PV array you access.
- 21 -
Pic 7.1 Eastron meter
Eastron SDM630-Modbus V2
(5,6,7,8)
(1,2,3,4)
1234
5678
RS 485
RS 485 B RS 485 A
B A G
GND
Eastron
5 6 7 8
Pic 7.2 Connec�on diagram of Eastron meter
Solar Panel array
meter
AC Breaker
Grid
RS485 Communication
Family load
L1 L2 L3 N
L1 L2 L3 N
L1 L2 L3 N
L1 L2 L3 N
N L3 L2 L1
VCC_5V
485_B
485_B
485_A
485_A
GND
GND
RS 485
Male
connector
RS 485
Female connector
1
2
3
4
5 6 7 8
Inverter
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
- 22 -
Pic 7.3 Eastron meter
Eastron SDM630MCT
1 2 3 4 5 6
L1
L2
L3
N
P1P2
S1S2
P2 P1
S1S 2
P1P2
S1
S2
3 PHASE 4 WIRE
15 16
17 18
19 20
Grid voltage
sampling
Auxiliary
power supply
Current inputs
RS 485
RS 485 A RS 485 B
14 13 12
GND
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
P
M
E
U/I
ESC
Eastron
Pic 7.4 Connec�on diagram of Eastron meter
Solar Panel array
meter
AC Breaker
Grid
RS485 Communication
Family load
N L3 L2 L1 LA NA
S2 S1 S2 S1 S2 S1
GND B A
CT2
CT1
CT3
White line
black line
White line
black line
White line
black line
L1 L2 L3 N
N L3 L2 L1
VCC_5V
485_B
485_A
485_A
485_B
GND
GND
RS 485
Male connector
RS 485
Female
connector
1
2
3
4
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
P
M
E
U/I
ESC
Eastron
Note: the arrow direction towards
the inverter
Inverter
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
- 23 -
Pic 7.5 CHNT meter
Three-Phase Smart Meter
SET ESC
1 74 10
2524
3 96 10
RS 485
CHNT DTSU666
(3,6,9,10)
(1,4,7,10)
Pic 7.6 Connec�on diagram of CHNT meter
Solar Panel array
meter
AC Breaker
Grid
RS485 Communication
Family load
1 74 10
2524
3 96 10
Three-Phase Smart Meter
SET ESC
L1 L2 L3 N
L1 L2 L3 N
N L3 L2 L1
VCC_5V
485_B
485_B
485_A
485_A
GND
RS 485
Male connector
RS 485
Female connector
1
2
3
4
Inverter
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
- 24 -
7.1 Mul�ple strings and parallel connec�on meters
If there’s several inverters in a plant, also it can use 1pcs meter to realize zero export
func�on.For example,if there’s 3pcs inverter in the system with 1pcs meter.We need
to setup 1pcs inverter as the master and others setup as slaves. And, all of them need
to connect to the meter via RS485. Below is the system diagram and configura�on of
the system.
This applica�on is that when the string inverters work in parallel, there is only one
power grid and one load, and only one meter can be connected to prevent reverse
current, so only this many-to-one an�-reverse current connec�on can be connected.
Pic 7.7 Meter func�on
G.Cap
Back<<
0.0KW
Meter
Limiter
OFF <<
OFF
Exp_Mode
CT_Ratio
AVG <<
0
MFR
FeedIn
0.0KW <<
ACREL
Shunt
ShuntQTY
OFF
1 <<
ON
Generator
G.CT
1 <<
G.MFR
G.FeedIn
CHNT
0% <<
- 25 -
Name Descrip�on
Exp_Mode
AVG: Average power of three phase is zero
exported.
MIN: Phase with minimum load power is zero
exported, while the other two phase may be
in purchase mode.
AVG/MIN
1-1000
1-1000
1-16
ON/OFF
1-999kW
OFF/Master/
Slave
ShuntQTY
Generator
G.CT
G.MFR
G.FeedIn
G.Cap
CT_Ra�o
MFR
Shunt
CT ra�o of power grid side meter when extern
CT is applied.
Manufacturer of the grid side meter. Modbus
Address of it should be set as 01.
Parallel mode. Set one inverter as Master,
others are Slave. ONLY need to set the master,
Slave will follow the se�ngs in the master.
Number of inverters in parallel
DG side meter func�on Enable/Disable
CT ra�o of power DG side meter when extern
CT is applied.
Manufacturer of the DG side meter. Modbus
Address of it should be set as 02.
Output power percentage of the DG.
Capacity of the DG.
Range
0-110%
0-110%
AUTO/CHNT/
EASTRON
AUTO/CHNT/
EASTRON
Feedin
Percentage of the Feed in power exported
to the grid.
Note
: Select Meter op�on in Run Param and long press ENTER bu�on to enter this Meter
Se�ng page.
- 26 -
Eastron SDM630-Modbus V2
Eastron
5 6 7 8
Pic 7.8 Eastron meter
RS 485
RS 485 B RS 485 A
B A G
(5,6,7,8)
(1,2,3,4)
1234
5678
GND
Pic 7.9 Eastron Connec�on diagram(The pass-through table)
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
Solar Panel array
Solar Panel array
Solar Panel array
L1
L2
L3
N
load
Grid meter
5 6 7 8
N L3 L2 L1
Master(Mst)
Slave1(Slv1)
Slave2(Slv2)
Grid
L1 L2 L3 N
1
2
3
4
Master(Mst)
RS485
1
2
3
4
Slave1(Slv1)
RS485
1
2
3
4
Slave2(Slv2)
RS485
485_B
485_A
AC Breaker
AC Breaker
AC Breaker
GND
485_B
(as short as possible)
485_A
(as short as possible)
GND
(as short as possible)
485_B
(as short as possible)
485_A
(as short as possible)
GND
(as short as possible)
AC Breaker
VCC_5V
485_B
485_AGND
RS 485
Female connector
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
WIFI
DC SWIT CH
ON
OFF
RS485
Meter
- 27 -
Pic 7.10 Eastron meter
Eastron SDM630MCT
1 2 3 4 5 6
L1
L2
L3
N
P1P2
S1S2
P2 P1
S1S 2
P1P2
S1
S2
3 PHASE 4 WIRE
15 16
17 18
19 20
Grid voltage
sampling
Auxiliary
power supply
Current inputs
RS 485
RS 485 A RS 485 B
14 13 12
GND
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
P
M
E
U/I
ESC
Eastron
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
Solar Panel array
Solar Panel array
Solar Panel array
L1
L2
L3
N
load
AC Breaker
AC Breaker
AC Breaker
N L3 L2 L1 LA NA
S2 S1 S2 S1 S2 S1
GND B A
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16 17 18 19 20
P
M
E
U/I
ESC
Eastron
CT1
Note: the arrow direction towards
the inverter
CT2
CT3
Grid meter
White line
black line
White line
black line
White line
black line
1
2
3
4
Master(Mst)
RS485
1
2
3
4
Slave1(Slv1)
RS485
1
2
3
4
Slave2(Slv2)
RS485
485_B
485_A
GND
485_B
(as short as possible)
485_A
(as short as possible)
GND
(as short as possible)
485_B
(as short as possible)
485_A
(as short as possible)
GND
(as short as possible)
Pic 7.11 Connec�on diagram(Three-phase electricity )
Grid
L1 L2 L3 N
AC Breaker
VCC_5V
485_B
485_AGND
RS 485
Female connector
Slave2(Slv2)
Slave1(Slv1)
Master(Mst)
WIFI
DC SWITCH
ON
OFF
RS485
Meter
WIFI
DC SWITCH
ON
OFF
RS485
Meter
WIFI
DC SWITCH
ON
OFF
RS485
Meter
- 28 -
Pic 7.12 CHNT meter
Three-Phase Smart Meter
SET ESC
1 74 10
2524
3 96 10
RS 485
CHNT DTSU666
(3,6,9,10)
(1,4,7,10)
Pic 7.13 CHNT Connec�on diagram(The pass-through table)
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
Solar Panel array
Solar Panel array
Solar Panel array
L1
L2
L3
N
load
Master(Mst)
Slave1(Slv1)
Slave2(Slv2)
AC Breaker
AC Breaker
AC Breaker
Grid
L1 L2 L3 N
1 74 10
2524
3 96 10
Three-Phase Smart Meter
SET ESC
1
2
3
4
Master(Mst)
RS485
1
2
3
4
Slave1(Slv1)
RS485
1
2
3
4
Slave2(Slv2)
RS485
485_B
485_A
GND
485_B
(as short as possible)
485_A
(as short as possible)
485_B
(as short as possible)
485_A
(as short as possible)
AC Breaker
VCC_5V
485_B
485_AGND
RS 485
Female connector
WIFI
DC SWITCH
ON
OFF
RS485
Meter
WIFI
DC SWITCH
ON
OFF
RS485
Meter
WIFI
DC SWITCH
ON
OFF
RS485
Meter
- 29 -
7.2 Use of zero-export func�on
Pic 7.15 Meter switchPic 7.14 Parameter se�ng
System Param <<
Run Param
Island OFF
0FF <<Meter
When the connec�on is completed, the following steps should be refered to use this func�on:
1. Turn on the AC switch.
2. Turn on the DC switch, wai�ng for the inverter's LCD is turned on.
3. Press Enter bu�on on the LCD panel in the main interface into the menu op�ons, select
[parameter se�ng] to enter setup submenu, and then select [running parameters] as shown
in picture 7.14, at this �me please input the default password 1234 through pressing the
bu�on [up down, enter], enter the opera�on parameter se�ng interface, shown as
picture 7.15.
Meter Power:
20W
Pic 7.16 Zero-export func�on via energy meter turn on
4. Operate the bu�on [up down], move se�ng cursor to energy meter and press the bu�on
[enter]. At this �me you can turn on or turn off the energy meter by choosing [up down]
bu�on, please press [enter] bu�on to confirm when se�ng done.
5. Move the cursor to [OK], press [enter] to save the se�ngs and exit the running
parameters page, otherwise the se�ngs are invalid.
6. If set up successfully, you can return to the menu interface, and display the LCD to [home
page] by press the [up down] bu�on. If it displays [meter power XXW], the zero-export
func�on se�ng is completed. Shown as picture 7.16.
7. Meter power XXW shows posi�ve means grid is supplying the load, and no power fed into
grid. if meter power shows nega�ve, it means PV energy is being sold to grid or energy meter
wiring connce�on has problem.
8. A�er properly connec�on is done, wait for inverter star�ng. If the power of the PV array
meets the current power consump�on, the inverter will keep a certain output to counteract
the power of the grid without backflow .
- 30 -
7.3 Notes while using zero export func�on
For your safety and the opera�on of limiter func�on of the inverter, we put forward the
following sugges�ons and precau�ons:
Safety Hint:
While the u�lity power is nega�ve and inverter has no output power, that means
the orienta�on of the current sensor is wrong, please turn off the inverter and
change orienta�on of the current sensor.
Safety Hint:
Under zero export mode we strongly recommend that the two PV arrays are
formed by the same number of PV panels of the same size, which will make the
inverter more responsive to limit the power.
7.4 How to browse the load power of your PV grid-�e plant on monitoring pla�orm?
If you want to browse load power of the system and how much energy (KWH) does it export to
grid(inverter output power is used to power the load firstly and then the surplus energy will
feed into grid). You also need to connect the meter according to above diagram. A�er the
connec�on completed successfully, the inverter will show the load power on the LCD.
But please
don’t setup “Meter ON”. Also, you will be able to browse the load power on the monitoring
pla�orm. The plant se�ng method as below descrip�on.
Firstly, go to the solarman pla�orm(h�ps://pro.solarmanpv.com, this link is for solarman
distributor account; or h�ps://home.solarmanpv.com, this link is for solarman end user
account;) plant home page and click “edit”
Partially Offline
Edit Tags
No Alerts
ID1399
String inverter Solar Sta�on
String inverter Solar Sta...
Back to Plants list
Dashboard
Devices
Alerts
About
Authorizations
Layout
Work Order
Address
Yon gJiang Road,Beilun,Ning...
Residential
Flow Graph
Production
Production Power 9.52 kW
Capacity 30 kWp
Grid Power
6.87 kW
Compare
Last update 2021/03/22 08:40:59 UTC+08:00
Updated: 2021/03/22 08:35:33
10℃
5℃/13℃ Sunny
4 m/s 05:55 18:05
MON
Add Edit More
Consumption Power
2.6kW
Consumption Grid
Self-consumption
Plant Type
System Type
Phone
Plan
Maintenance
Record
！
32%
13℃
9℃
WED
3/24
16℃
5℃
TUE
3/23
17℃
9℃
THU
3/25
18℃
10℃
FRI
3/26
Cover
- 31 -
And then choose your system type as “Self-consump�on”
Secondly, go to plant page, if it shows the PV power, load power and grid power, which means
the configura�on is correct.
Edit Plant
Basic Info
Address :
YongJian
g
Road
,
Beilum
,
NingBo
,
315806
,
China
System Info
Yield Info
Owner Info
Cancel
Done
*
Capacity(kWp):
30
*
Coordinates :
Longitude
Time Zone :
System Info
Plant Type :
Residential
(UTC+08:00) Beijing,Chongqing,Hong Kong,Urumqi
Latitude
Creation Time :
Collapse
2020/04/08
System Type :
0~360
Azimuth( ):
Self-consumption
121
*
46
19.03
29 53
36.11
‘ ‘
”
”
Partially Offline
Edit Tags
No Alerts
ID1399
String inverter Solar Sta�on
String inverter Solar Sta...
Back to Plants list
Dashboard
Devices
Alerts
About
Authorizations
Layout
Work Order
Address
Yon gJiang Road,Beilun,Ning...
Residential
Flow Graph
Production
Production Power 9.52 kW
Capacity 30 kWp
Grid Power
6.87 kW
Compare
Last update 2021/03/22 08:40:59 UTC+08:00
Updated: 2021/03/22 08:35:33
10℃
5℃/13℃ Sunny
4 m/s 05:55 18:05
MON
Add Edit More
Consumption Power
2.6kW
Consumption Grid
Self-consumption
Plant Type
System Type
Phone
Plan
Maintenance
Record
！
32%
13℃
9℃
WED
3/24
16℃
5℃
TUE
3/23
17℃
9℃
THU
3/25
18℃
10℃
FRI
3/26
Cover
Flow Graph Production Consump�on Grid
Grid Power
Production Power 9.52 kW
Consumption
Power
2.6kW
6.87 kW
Capacity 30 kWp
32%
- 32 -
8. General Opera�on
During normal opera�on, the LCD shows the current status of the inverter, including the
current power, total genera�on, a bar chart of power opera�on and inverter ID,etc. Press the
Up key and the Down key to see the current DC voltage, DC current, AC voltage, AC current,in-
verter radiator temperature,so�ware version number and Wifi connec�on state of the
inverter.
Start
ON/OFF
Setup
*PV VA
Device
informa�on
Fault record
LCD Main menu
Total DC Power
PV1 and Power
UA and UB
UC and Freq
*Meter
Time
E-Day and E-Total
*IoaEp and Total
*lmpEp and Total
*Load
*ExpEp and Total
Setup
System param
Time Set
Language Set
Display Set
Factory Reset
P cck
English
Polski
Confirm Reset
Cancel
Cancel
Set Restore
I Confirm
Bright Keep
Delay �me 05S
GL3000 SN-13
ID:2107279701
Inv1400
LcdA238
1 F35 220513 07
2 F35 220513 06
3 F35 220513 06
4 F35 220513 06
Turn ON
Turn OFF
Branch 2 : 0.0A
Branch 1 : 0.0A
- 33 -
Setup
Running param
OFF
CLR
ON
OFF
HYS
ON
OFF
V1-V4 P1-P4
ON
PF
Island
ARC
PU
LVRT
HVRT
PowerLim
DRM
Ac�veP
Q-Mode
VRated
ReactP
Fun- ISO
Fun RCD
SelfCheck
Meter
Limiter
Feed-in
MPPT Num
WindTurbine
OF-Derate
UF-Uprate
WGRa
WGraStr
Sunspec
QP
OFF
PFP
QU
PF
Q(%)
Pstart
Pstop
PmpTime
PtUsed
V1-V6 Q1-Q6
AUTO
CHNT
EASTRON
ACREL
OFF
MST
SLV
AUTO
CHNT
EASTRON
ACREL
CT_Ra�o 0
MFR
Exp_Mode
Generator
G.CT
G.MFR
G.FeedIn
G.Cap
FeedIn
Shunt
Vstart
Vstop
P1-P6 PF1-PF6
RmpTime
HardLimita�on
Enable
Point
So�Limita�on
P1-P6
Q1-Q6
MIN
AVG
ShuntQTY
V1-V12
Cancel
DC1-Wind OFF/ON
DC2-Wind OFF/ON
OK
- 34 -
*Note: These parameters will be avaiable a�er the meter is
connected successfully. Otherwise, it won't show.
Protect Param
Comm. param
Setup
INMETRO
EN50549
EN50438
IEC61727
CUSTOM
VDE_4105
UTE_C15
RD1699
CEI_0_21
G98_G99
AS4777(.2)
NB/T 32004
MEA
PEA
OverVolt Lv3-Lv1
Point 240.0V
Delay 1000ms
UnderVolt Lv1-Lv3
Point 235.0V
Delay 1000ms
OverFreq Lv3-Lv1
Vup
Point 52.00Hz
Delay 1000ms
UnderFreq Lv1-Lv3
Point 48.00Hz
Delay 1000ms
Reconnec�on
OV 10 Minutes
Vdown
Fup
Fdown
Enable
Point
Grid: 127/220V
Address:01
Meter:AUTO
BaudRate: 9600
GridStanderd
Advanced
Back
Pic 8.1 LCD opera�on flow chart
- 35 -
Pic 8.10 Load consump�on
LoadEp: Daily consump�on;
Total: Total energy consump�on.
LoadEp: 0.00KWh
Total : 0.00KWh
Pic 8.7 PV genera�on
E-Day: Daily genera�on;
E-Total: Total genera�on.
E-Day : 0Wh
E-Total : 134KWh
Pic 8.2 The ini�al interface
Power: 0W
State: Standby
Power: 0W
State: Com.Error
Press UP or Down, you can check inverter DC voltage, DC current, AC voltage, AC current and
inverter temperature.
Pic 8.5 Grid voltage and current informa�on Pic 8.6 Grid voltage and frequency
UA: 234V 0.0A
UB: 0V 0.0A
UC: 0V 0.0A
Freq: 0.00Hz
Pic 8.8 Time Pic 8.9 Meter power
21 - 05 - 2020
15 : 57 : 08
Meter
Power: 0W
Pic 8.3 PV input voltage and current
informa�on
Pic 8.4 Load power
Total DC POWER:
0W
Power: 0W
PV1: 0.0V 0.0A
From the ini�al interface, you can check PV power, PV voltage, grid voltage, inverter ID, model
and other infoma�on.
8.1 The ini�al interface
- 36 -
It can keep Eight fault records in the menu including �me, customer can deal with it depends
on the error code.
Pic 8.14 Fault Record
8.2.2 Fault Record
Device Info.
Fault Record <<
1 F35 220513 07
2 F35 220513 06
3 F35 220513 06
4 F35 220513 06
You can see the LCD so�ware VerA238 and control board so�ware Ver1400. In this interface,
there are parameters such as rated power communica�on addresses.
Pic 8.13 Device informa�on
8.2.1 Device informa�on
Device Info. <<
Fault Record
GL3000 SN-13
ID:2107279701
ID:2107279701
Inv1400
Inv1400
LcdA238
There are five submenus in the Main Menu.
8.2 Submenus in the Main Menu
ImpEp: Daily energy purchased from grid;
Total: Total energy purchased from grid.
Pic 8.11 Electrical energy
ImpEp: 0.00KWh
Total : 0.00KWh
ExpEp: Daily energy sold to grid;
Total: Total energy sold to grid.
Pic 8.12 Electrical energy
ExpEp: 0.00KWh
Total : 0.00KWh
- 37 -
When the inverter is turned off, it stops working immediately, and go to standby mode and
then will go to self-test program again. If it passed the self-test, it will start to work again.
Pic 8.15 ON/OFF se�ng
8.2.3 ON/OFF se�ng
ON / OFF <<
Setup
Turn ON <<
Turn OFF
Turn ON
OK << Cancel
Turn OFF
OK << Cancel
Each PV string current and this func�on is op�onal.
Pic 8.16 PV String current
8.2.4 PV VA se�ng
Setup
PV VA <<
Branch 1 : 0.0A
Branch 2 : 0.0A
There are five submenus in the setup.Se�ng includes system param, run param, protect
param, comm: param. All of these informa�on for maintenance reference.
Pic 8.17 Submenus of the parameter setup
8.2.5 Parameter se�ng
Setup <<
PV VA
System Param <<
Run Param
Protect Param
Comm. Param <<
- 38 -
System Param includes �me set, language set, display set and factory reset.
8.3 System param se�ng
Pic 8.18 System Param
Pic 8.19 Time
Time Set <<
Language Set
Display Set
Factory Reset <<
Factory Reset
Set Restore <<
20200522 OK
08:11:21 Cancel
English <<
Polski
Polski
P CCK
<<
Bright Keep <<
Delay time 05S
Delay time 05S
OK << Cancel
Confirm Reset <<
Cancel
Pic 8.22 Delay �me set Pic 8.23 Reset to factory se�ng
I Confirm <<
Cancel
Pic 8.24 Set Restore
Pic 8.21 LCD Screen se�ngs Pic 8.20 Language
- 39 -
8.4 Running param set
Warning:
Password required-- only for access-authorized engineer. Un-authorized access
may avoid the warranty. The ini�al password is 1234.
ActiveP 0%
Q-Mode OFF <<
ReactP 0.0% <<
Vref 0.0V
Pic 8.26
Pic 8.25 Password
PassWord
-
Fun ISO OFF <<
PF -1.000
SelfCheck 0S
Fun RCD OFF <<
-
Feed-in 0% <<
Limiter OFF
Meter
OFF
Island OFF <<
MPPT Num 0
WindTurbine <<
- 40 -
Pic 8.27
OFF/Q(P)/PF(P)
/Q(U)/PF/Q(%)
ON/OFF
ON/OFF
ON/OFF
ON/OFF
0-100%
0-1000s
Mul�ple reac�ve power control modes
Grid reference voltage for func�ons
including Q(U),PF(P),P(U)etc.
Power Fator
Insula�on resistance detec�on
Residual current detec�on
Inverter's self-check �me.The default
value 60s
An�-islanding protec�on
If you want to use zero output mode,please set
Meter to ON and select OFF to view data only
It is used to deploy how much power can
be feed in to grid when the inverter works
under zero export mode.(For example,
Feed_in=50% of the 25KW model and
load power is 11KW. which means Max
12.5KW power can be feed into grid a�er
inverter providing 11Kw to the load firstly.
-100%-+100%
80-260V
Adjust reac�ve power output in %
-1-0.8~+0.8-1
Name Descrip�on
Range
Ac�veP Adjust the output ac�ve power in % 0-110%
Fun_ISO
Fun_RCD
Self-check
Island
Meter
Feed_IN %
Q-Mode
Vref
PF
ReactP
- 41 -
Pic 8.29
Pic 8.28
WGra 0.000%
UF-Uprate OFF <-
OF-Derate OFF <-
ARC ON
HardLimitation
Enable OFF <<
HardLimitation
Point 0.0% <<
SoftLimitation
Enable OFF <<
OK << Cancel
LVRT OFF
HVRT OFF <<
DRM OFF
Sunspec OFF <<
OK Cancel <<
Sunspec OFF <<
PU ON
PowerLim <<
WGra 0.0% <<
WGraStr 0.0%
Pic 8.30
- 42 -
Name
Descrip�on Range
ARC
Arc-fault detec�on func�on ON/OFF/CLR
ON/OFF/HYS
ON/OFF
ON/OFF
Ac�ve power response to over-
frequency
voltage ride through func�on
voltage ride through func�on
OF-Derate
ON/OFF
Ac�ve power response to under-
frequency
UF-Uprate
ON/OFF
power response to grid voltage
devia�on
PU
LVRT
HVRT
ON/OFFHard/so� export limit control
PowerLim
ON/OFFDemand Response Modes
DRM
ON/OFFSunspec Func�on
Sunspec
Percentage of Nominal Power
per second
WGraStr 0.1%~10%
0.1%~10%
percentage of Nominal Power
per second
WGra
Pic 8.31
- 43 -
This series inverter provides “over-frequency response” func�on.
Long pressing the “OFD Mode” to enter the “over-frequency response”
se�ng menu.
Fstop 51.50Hz <<
Fstr
50.50Hz
For example, StrtPT: 50.5Hz, StopPT:
51.5Hz, RecPT: 50.1Hz, when the grid
frequency increases beyond Start: 50.5Hz,
the inverter will linearly reduce the power
output with a gradient of 100% Pmax/Hz
un�l it reaches StopPT: 51.5Hz.
Fig. 11-3 Frq-Watt Mode for Over-frequency Conditions
50.0 50.1 50.2 50.3 50.4 50.5 50.6 50.7 50.8 50.9 51.0 51.1 51.2 51.3 51.4 51.5 51.6 51.7 51.8 51.9 52.0
RecPT
Fstr
Fstop
Rated
Output
Power(kW)
Grid Frequency(Hz)
Hysteresis mode
OF-Derate ON <-
ARC ON
OF-Derate OFF <-
ARC ON
OFDMode HYS <-
ARC ON
Over-frequency Response
Tab. 11-4 Definition of Over-frequency Response Parameters
Fstr
Fstop
RecPT
RecGra
The Start frequency value for over-frequency response.
The Stop frequency value for over-frequency response.
Rate of Power recovery(Percentage of active power)
In hysteresis mode, power is restored only when
it is below this frequency
45HZ-65HZ
45HZ-65HZ
45HZ-65HZ
[3,500] 0.01%Pmax/s
Parameter Range Description
- 44 -
Pic 8.32
The reac�ve power regula�on func�on is disabled. The PF is fixed at +1.000
"OFF" Mode
Adjust reac�ve power output in %.
Q(%)
The power factor (PF) is fixed and the reac�ve power is regulated by the parameter
PF. The PF ranges from 0.8 leading to 0.8 lagging.
•Leading: the inverter is absorbing reac�ve power from the Grid.
•Lagging: the inverter is injec�ng reac�ve power into the grid.
"PF" Mode
The inverter provides a reactive power regulation function.
Tap Reactive Power Regulation Mode to select proper regulation mode and set the
corresponding parameters.
ActiveP 0%
Q-Mode OFF <<
ActiveP 0%
Q-Mode Q(P) <<
ActiveP 0%
Q-Mode PF <<
ActiveP 0%
Q-Mode Q(%)<<
ActiveP 0%
Q-Mode PF(P) <<
ActiveP 0%
Q-Mode Q(U) <<
RecGra 0.00% <<
Frec 50.10Hz
RecDly 0.00
OK << Cancel
When the frequency exceeds Fstop: 51.5Hz, the inverter output should stop (ie 0 W).
When the frequency is lower than
Fstop: 51.5 Hz, the inverter will linearly increase the power
output with a gradient of 100% Pmax/Hz un�l it reaches
Fstr: 50.5 Hz.
In the hysteresis mode, when the frequency is lower than
Fstop: 51.5 Hz, the inverter will not
increase the power output un�l it is lower than RecPT: 50.1 Hz.
- 45 -
The reac�ve power output of the inverter varies in response to the grid voltage.
"Q(U)" Mode
The reactive power output by the inverter is controlled by the active power
of the inverter.
"Q(P)" Mode
The PF is controlled by the active power of the inverter.
"PF(P)" Mode
V3 0.0% <<
P3
0.0%
V4 0.0% <<
P4
0.0%
OK Cancel <<
“PU” Mode
The ac�ve power output of the inverter varies in response to the grid voltage
WGraStr 0.0%
PU
OFF <-
WGraStr 0.0%
PU
ON <-
V1 0.0% <<
P1
0.0%
V2 0.0% <<
P2
0.0%
- 46 -
Pic 8.33 Ac�ve Power Regula�on Curve in PU Curve
Grid voltage limit at point (P1,U1) on the PU mode
curve
Grid voltage limit at point (P2,U2) on the PU mode
curve
Grid voltage limit at point (P3,U3) on the PU mode
curve
Grid voltage limit at point (P4,U4) on the PU mode
curve
Value of P/Pn at point (P1,U1) on the PU mode
curve
Value of P/Pn at point (P2,U2) on the PU mode
curve
Value of P/Pn at point (P3,U3) on the PU mode
curve
Value of P/Pn at point (P4,U4) on the PU mode
curve
0%-110% Pn
P1
P2
P3
U1
U2
U3
P4
U4
Parameter Range Descrption
0% -150% Vref
0%-110% Pn
0% -150% Vref
0%-110% Pn
0% -150% Vref
0%-110% Pn
0% -150% Vref
"PU" Mode Parameters Explanation
P/Pn
U/Vref
(U1,P1)
(U2,P2)
(U3,P3)
(U4,P4)
- 47 -
V4 0.0% <<
V4
0.0%
V5 0.0% <<
Q5
0.0%
V6 130.0% <<
Q6
30.0%
Q6 0.0%
OK Cancel <<
Pic 8.34
RmpTime 0s
PtUsed
V1 0.0% <<
Q1
0.0%
V3 0.0% <<
Q3
0.0%
V2 0.0% <<
Q2
0.0%
Pstart 0.0% <<
Pstop
20.0%
ActiveP 0%
QMode
Q(U) <-
“Q(U)” Mode
0 <<
- 48 -
Pic 8.35 Reac�ve Power Regula�on Curve in Q(U) Curve
Upper
Q/Pn lnd
Lower
Q/Pn Cap
Grid
Voltage
(U1,Q1)
(U2,Q2)
(U3,Q3)
(U4,Q4)
(U5,Q5)
(U6,Q6)
- 49 -
"Q(U)" Mode Parameters Explanation
Pstart
0%-130% Rate out power
The QU mode starts when the active power
is greater than this value
The QU mode stops when the active power
is less than this value
Grid voltage limit at point (U1,Q1) on the
Q(U) mode curve
Grid voltage limit at point (U2,Q2) on the
Q(U) mode curve
Grid voltage limit at point (U3,Q3) on the
Q(U) mode curve
Grid voltage limit at point (U4,Q4) on the
Q(U) mode curve
Grid voltage limit at point (U5,Q5) on the
Q(U) mode curve
Grid voltage limit at point (U6,Q6) on the
Q(U) mode curve
Increase or decrease the time required for
the reactive power to reach the specified
value of the curve.
Value of Q/Pn at point (U1,Q1) on the Q(U)
mode curve
Value of Q/Pn at point (U2,Q2) on the Q(U)
mode curve
Value of Q/Pn at point (U3,Q3) on the Q(U)
mode curve
Value of Q/Pn at point (U4,Q4) on the Q(U)
mode curve
Value of Q/Pn at point (U5,Q5) on the Q(U)
mode curve
Value of Q/Pn at point (U6,Q6) on the Q(U)
mode curve
0%-130% Rate out power
0-110% VRated
-60% -60% Q/Pn
0-110% VRated
-60% -60% Q/Pn
0-110% VRated
-60% -60% Q/Pn
0-110% VRated
-60% -60% Q/Pn
0-110% VRated
-60% -60% Q/Pn
0-110% VRated
0-1000s
-60% -60% Q/Pn
Pstop
Q1
Q2
Q3
V1
V2
V3
Q4
V4
Q5
V5
Q6
V6
RMpTime
Parameter Range Description
- 50 -
Pic 8.36 Reac�ve Power Regula�on Curve in Q(P) Mode
(P1,Q1)
P4(P4,Q4)
P5(P5,Q5)
P6(P6,Q6)
P/Pn
P2(P2,Q2)
P3(P3,Q3)
Upper
Q/Pn lnd
Lower
Q/Pn Cap
“Q(P)” Mode
The reactive power output by the inverter is controlled by the active power of the inverter.
ActiveP 20.0%
QMode
QP <-
P1 0.0% <<
Q1
0.0%
P2 0.0% <<
Q2
0.0%
P3 0.0% <<
Q3
0.0%
P4 0.0% <<
Q4
0.0%
P5 0.0% <<
Q5
0.0%
P6 0.0% <<
Q6
0.0%
OK << Cancel
- 51 -
"Q(P)" Mode Parameters Explanation
Reac�ve power value at point (P1,Q1) on the Q(P)
mode curve
Reac�ve power value at point (P2,Q2) on the Q(P)
mode curve
Reac�ve power value at point (P3,Q3) on the Q(P)
mode curve
Reac�ve power value at point (P4,Q4) on the Q(P)
mode curve
Reac�ve power value at point (P5,Q5) on the Q(P)
mode curve
Reac�ve power value at point (P6,Q6) on the Q(P)
mode curve
Power value/Pn at point (P1,Q1) on the Q(P) mode
curve
Power value/Pn at point (P2,Q2) on the Q(P) mode
curve
Power value/Pn at point (P3,Q3) on the Q(P) mode
curve
Power value/Pn at point (P4,Q4) on the Q(P) mode
curve
Power value/Pn at point (P5,Q5) on the Q(P) mode
curve
Power value/Pn at point (P6,Q6) on the Q(P) mode
curve
0%-100% Pn
0%-100% Pn
0%-100% Pn
0%-100% Pn
0%-100% Pn
0%-100% Pn
P1
P2
P3
Q1
Q2
Q3
P4
Q4
P5
Q5
P6
Q6
Parameter Range Description
-60% -60% Q/Pn
-60% -60% Q/Pn
-60% -60% Q/Pn
-60% -60% Q/Pn
-60% -60% Q/Pn
-60% -60% Q/Pn
- 52 -
"PF(P)" Mode
The output power factor is controlled by the active power of the inverter.
Vstart 0.0%
Vstop 0.0%
P1 0.0%
PF1
-1.000 <<
P2 0.0%
PF2
-1.000 <<
P3 0.0%
PF3
-1.000 <<
P4 0.0%
PF4
-1.000 <<
P5 0.0%
PF5
-1.000 <<
P6 0.0%
PF6
-1.000 <<
RmpTime 0s
OK Cancel <<
Pic 8.37 Power factor Regula�on Curve in PF(P) Mode
P/Pn
P1(P1,PF1)
P4(P4,PF4)
P5(P5,PF5)
P6(P6,PF6)
P2(P2,PF2)
P3(P3,PF3)
PF lagging
PF leading
- 53 -
Vstart 0-150% Vref
The PFP mode is enable when grid
voltage is greater than Vstart
0-150% Vref
The PFP mode is disable when grid voltage
is less than Vstop
0-110% Pn
Power value at point (PF1,P1) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (PF1,P1) on the PF(P)
Curve
0-110% Pn
Power value at point (PF2,P2) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (P2,PF2) on the PF(P)
Curve
0-110% Pn
Power value at point (P3,PF3) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (P3,PF3) on the PF(P)
Curve
0-110% Pn
Power value at point (P4,PF4) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (P4,PF4) on the PF(P)
Curve
0-110% Pn
Power value at point (P5,PF5) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (P5,PF5) on the PF(P)
Curve
0-110% Pn
Power value at point (P6,PF6) on the PF(P)
Curve
0.8 leading - 0.8 lagging
PF value at point (P6,PF6) on the PF(P)
Curve
The �me of the PFF Curve in seconds
(�me to accomplish a change of 95%).
Vstop
P1
P2
P3
PF1
PF2
PF3
P4
PF4
P5
PF5
P6
PF6
RMpTime
Parameter Range Description
0-1000s
"PF(P)" Mode Parameters Explanation
- 54 -
PassWord
GridStanderd <<
Advanced
Back <<
Warning:
Engineer Only.
We will set the param depends on the safety requirements, so customers don't
need to reset it. The password is same as 8.4 Running param
8.5 Protect Param
Pic 8.32 Password
Warning:
Engineer only.
OverVolt Lv3
Point 240.0V <<
OverVolt Lv3
Delay 1000ms <<
INMETRO
EN50549 <<
EN50438
IEC61727 <<
CUSTOM
VDE_4105 <<
UTE_C15
RD1699 <<
_
CEI_0 21
G98_G99 <<
AS4777(.2)
NB/T 32004
MEA
PEA <<
OK Cancel <<
- 55 -
OverFreq Lv1
Point 52.00Hz <<
OverFreq Lv1
Delay 1000ms <<
UnderFreq Lv1
Delay 1000ms <<
UnderFreq Lv1
Point 48.00Hz <<
OverVolt Lv1
Point 240.0V <<
OverVolt Lv1
Delay 1000ms <<
UnderVolt Lv1
Point 235.0V <<
UnderVolt Lv1
Delay 1000ms <<
UnderVolt Lv2
Point 235.0V <<
UnderVolt Lv2
Delay 1000ms <<
UnderVolt Lv3
Point 235.0V <<
UnderVolt Lv3
Delay 1000ms <<
OverFreq Lv3
Point 52.00Hz <<
OverFreq Lv3
Delay 1000ms <<
OverFreq Lv2
Point 52.00Hz <<
OverFreq Lv2
Delay 1000ms <<
OverVolt Lv2
Point 240.0V <<
OverVolt Lv2
Delay 1000ms <<
- 56 -
Please set the proper grid parameters according to the requirements of your current country's
grid regula�ons.If you are not clear about it, please consult your installer.
Pic 8.33 “CUSTOMIZED”
8.6 Comm. param set
Pic 8.34 Comm. Param
Address: 01 <<
BaudRate: 9600
BaudRate: 9600
Meter: AUTO
Point 0.0%
Grid 127/220V <<
Grid 127/220V <<
OK Cancel <<
OV 10 Minutes
Enable OFF <<
OV 10 Minutes
Point 0.0% <<
Reconnection
Fup 0.00Hz <<
Reconnection
Fdown 0.00Hz <<
Reconnection
Vup 0.0V <<
Reconnection
Vdown 0.0V <<
UnderFreq Lv2
Point 48.00Hz <<
UnderFreq Lv2
Delay 1000ms <<
UnderFreq Lv3
Delay 1000ms <<
UnderFreq Lv3
Point 48.00Hz <<
- 57 -
10.Error informa�on and processing
Inverter has been designed in accordance with interna�onal grid �ed standards for safety,
and electromagne�c compa�bility requirements. Before delivering to the customer the
inverter has been subjected to several tests to ensure its op�mal opera�on and reliability.
9. Repair and Maintenance
String type inverter doesn’t need regular maintenance. However,debris or dust will affect heat
sink’s thermal performance. It is be�er to clean it with a so� brush. If the surface is too dirty
and affect the reading of LCD and LED lamp, you can use wet cloth to clean it up.
High Temperature Hazard:
When the device is running, the local temperature is too high and the touch can
cause burns. Turn off the inverter and wait for it cooling, then you can clean and
maintain.
Safety Hint:
No solvent, abrasive materials or corrosive materials can be used for cleaning
any parts of the inverter.
- 58 -
10.1 Error code
If there is any failure,the LCD screen will display an alarm message. In this case,the inverter
may stop feeding energy into the grid. The alarm descrip�on and their corresponding alarm
messages are listed Table 10.1.
Error code Descrip�on Ongrid - Three Phase
F01 DC input polarity reverse fault Check the PV input polarity.
F03 DC leakage current fault Hardly appear the code. Never ever happened so far.
F07 GFDI blown fuse Hardly appear the code. Never ever happened so far.
F11 AC main contactor errors Hardly appear the code. Never ever happened so far.
F12 AC auxiliary contactor errors Hardly appear the code. Never ever happened so far.
F14 DC firmware over current Hardly appear the code. Never ever happened so far.
F08 GFDI grounding touch failure Hardly appear the code. Never ever happened so far.
F02
DC insula�on impedance
permanent fault
Check the grounding cable of inverter.
F04
Ground fault GFDI Check the solar panel output connec�on.
F17
Hardly appear the code. Never ever happened so far.
F09
IGBT damaged by excessive drop
voltage
Hardly appear the code. Never ever happened so far.
F10
Auxiliary switch power supply
failure
F05
Read the memory error
Failure in reading memory (EEPROM). Restart the inverter if the
fault s�ll exists, contact your installer or Deye service.
F06
Write the memory error
Failure in wri�ng memory (EEPROM). Restart the inverter if the
fault s�ll exists, contact your installer or Deye service.
1. It tells the DC 12V is not existed.
2. Restart the inverter, if the fault s�ll exists, please contact
your installer or Deye service.
F13
reserved
1. Loss of one phase or AC voltage detec�on part failure or
relays not closed.
2. Restart the inverter, if the error s�ll exists, please contact your
installer or Deye service.
F15
AC firmware over current
1. The internal AC sensor or detec�on circuit on control board
or connec�on wire may loose.
2. Restart the inverter, if the error s�ll exists, please contact
your installer or Deye service.
F18
AC over current fault of hardware
1. Check AC sensor or detec�on circuit on control board or
connec�on wire.
2. Restart the inverter or factory reset, if the error s�ll exists,
please contact your installer or Deye service.
F16
GFCI(RCD) Ac leakage current
fault
1. This fault means the average leakage current is over 300mA.
Check whether DC power supply or solar panels is ok, then
check 'Test data'-> 'diL'value is about 40; Then check the
leakage current sensor or circuit (the following picture).
Checking test data needs using big LCD.
2. Restart the inverter, if the error s�ll exists, please contact your
installer or Deye service.
Three phase current,
over-current fault
F19
Hardly appear the code. Never ever happened so far.All hardware failure synthesis
- 59 -
F20
DC over current fault of the
hardware
1. Check whether solar panel output current is within the
allowed range.
2. Check DC current sensor and its detec�on circuit.
3. Check if the inverter FW version is suitable for the hardware.
4. Restart the inverter, if the error s�ll exists, please contact your
installer or Deye service.
F22
Contact your installer for help.
Crash stop (if there is a stop
bu�on)
F21
Hardly appear the code. Never ever happened so far.DC leakage flow fault
Error code Descrip�on Ongrid - Three Phase
F25 DC feedback fault Hardly appear the code. Never ever happened so far.
F27 DC end insula�on error Hardly appear the code. Never ever happened so far.
F28 Inverter 1 DC high fault Hardly appear the code. Never ever happened so far.
F29 AC load switch failure Hardly appear the code. Never ever happened so far.
F32 Inverter 2 dc high fault Hardly appear the code. Never ever happened so far.
F33 AC over current Hardly appear the code. Never ever happened so far.
F34 AC current over load Hardly appear the code. Never ever happened so far.
F26
The DC busbar is unbalanced
1. Check whether the 'BUSN' cable or driver board power supply
cable is loose.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F31
Relay open circuit fault
1. At least one Relay can't be closed. Check relays and its driver
signal. (Old inverter not have relays detec�on func�on)
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F35
No AC grid
1. Check AC grid voltage. Check AC voltage detec�on circuit.
Check if the AC connector in good condi�on. Check whether
the AC grid is normal in voltage.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F30
AC main contactor failure
1. Check relays and AC voltage of relays.
2. Check relays driver circuit. Check if the so�ware is not suitable
for this inverter. (Old inverter not have relays detec�on
func�on)
3. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F23
AC leakage current is transient
over current
1. This fault means the leakage current is above 30mA suddenly.
Check whether DC power supply or solar panels is ok, then
check 'Test data'-> 'diL'value is about 40; Then check the
leakage current sensor or circuit. Check test data needs
using big LCD.
2. Restart the inverter, if the fault s�ll exists, contact your installer
or Deye service.
F24
DC insula�on impedance failure
1. Check Vpe resistance on main board or detec�on on control
board. Check PV panels is OK. Many �mes this issue is the PV
problem.
2. Check whether the PV panel (aluminum frame) is grounded
well and inverter is grounded well. Open the cover of inverter
and then check the inside ground cable is fixed well on the shell.
3. Check if the AC/DC cable, terminal block are shorted to ground
or the insula�on is damaged.
4. Restart the inverter, if the fault s�ll exists, contact your installer
or Deye service.
- 60 -
Error code Descrip�on Ongrid - Three Phase
F36 AC grid phase error Hardly appear the code. Never ever happened so far.
F40 DC over current Hardly appear the code. Never ever happened so far.
F39
AC over current(one cycle)
1. Check AC current sensor and its circuit.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F41
AC Line W,U over voltage
Check the AC voltage protec�on se�ng. And Check if the AC
cable is too thin.Check the voltage difference between LCD and
meter.
F37
AC three-phase voltage unbalance
failure
Hardly appear the code. Never ever happened so far.
F38
AC three-phase current unbalance
failure
Hardly appear the code. Never ever happened so far.
F55
DC busbar voltage is too high
1. Check PV voltage and Ubus voltage and its detec�on circuit.
If the PV input voltage exceeds the limit, please reduce the
number of solar panels in series.
2. For Ubus voltage, please check the LCD display.
F43
AC Line V,W over voltage
Check the AC voltage protec�on se�ng.And Check if the AC
cable is too thin.Check the voltage difference between LCD and
meter.
F45
AC Line U,V over voltage
Check the AC voltage protec�on se�ng.And Check if the AC
cable is too thin.Check the voltage difference between LCD and
meter.
F42
AC Line W,U low voltage
Check the AC voltage protec�on se�ng. Check the voltage
difference between LCD and meter. Also need to check whether
AC cables are all firmly and correctly connected.
F44
AC Line V,W low voltage
Check the AC voltage protec�on se�ng. Check the voltage
difference between LCD and meter. Also need to check whether
AC cables are all firmly and correctly connected.
F46 AC Line U,V low voltage Check the AC voltage protec�on se�ng.
F47 AC Over frequency Check the frequency protec�on se�ng.
F48 AC lower frequency Check the frequency protec�on se�ng.
F49
U phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.
F50
V phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.
F51
W phase grid current DC
component over current
Hardly appear the code. Never ever happened so far.
F52
AC inductor A, phase current
DC current high
Hardly appear the code. Never ever happened so far.
F53
AC inductor B, phase current
DC current high
Hardly appear the code. Never ever happened so far.
F54
AC inductor C, phase current
DC current high
Hardly appear the code. Never ever happened so far.
- 61 -
1. Serial number of the inverter;
2. The distributor/dealer of the inverter(if available);
3. Installa�on date;
4. The discrip�on of problem(include LCD'error code and LED starus indicator lights);
5. Your contact details.
Safety Hint:
If your string inverter has any of the fault informa�on shown in Table 10-1,and
when you reset the machine and s�ll don’t solve the problem,please contact our
distributor and provide the below details:
Table10.1 Error codes and their solu�ons
Error code Descrip�on Ongrid - Three Phase
F64
IGBT heat sink high temperature
1. Check temperature sensor. Check if firmware is suitable for
the hardware. Check if the inverter is its right model.
2. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F56
DC busbar voltage is too low
1. It tells the PV input voltage is low and it always happens in the
early morning.
2. Check PV voltage and Ubus voltage. When inverter is running,
then showing F56, maybe Loss of driver or need update
firmware.
3. Restart the inverter, if the fault s�ll exists, contact your
installer or Deye service.
F57 AC reverse irriga�on AC reverse irriga�on.
F58 AC grid U over current Hardly appear the code. Never ever happened so far.
F59 AC grid V over current Hardly appear the code. Never ever happened so far.
F60 AC grid W over current Hardly appear the code. Never ever happened so far.
F61 Reactor A phase over current Hardly appear the code. Never ever happened so far.
F62 Reactor B phase over current Hardly appear the code. Never ever happened so far.
F63
ARC fault
1. Check PV module cable connec�on and clear the fault;
2. Seek help from us, if can not go back to normal state.
- 62 -
11.Specifica�on
Model
Input Side
Max.DC Power(kW)
Max.DC Input Voltage(V)
Start-up DC Input Voltage(V)
MPPT Opera�ng Range(V)
Max.DC Input Current(A)
Number of MPPT/Strings per MPPT
250
1000
200~850
SUN-20K-G04
26
32+32
2/3
0
SUN-18K-G04
23.4
32+32
48+48 48+48 48+48
2/3
SUN-25K-G04
32+32
2/3
32.5
DC Injec�on Current(mA)
Grid Frequency Range
Max.Efficiency
Euro Efficiency
>99%MPPT Efficiency
Output Side
Efficiency
General Data
Rated Output Power(kW)
Max.Ac�ve Power(kW)
Rated AC Grid Voltage(V)
AC Grid Voltage Range(V)
Rated Grid Frequency(Hz)
Opera�ng Phase
Rated AC Grid Output Current(A)
Max.AC Output Current(A)
Output Power Factor
<0.5%
47-52 or 57-62 (Op�onal)
98.6%
97.8%
20
22
18
19.8
3L/N/PE 220/380V 230/400V
0.85Un-1.1Un (this may vary with grid standards)
50/60 (Op�onal)
Three phase
0.8 leading~0.8 lagging
<3%
25
27.5
55.449.8 69.1
61.555.4 76.8
Grid Current THD
330×508×206
Transformerless
Size(mm, W×H×D)
20.8Weight(kg)
Topology
<1W (Night)Internal consump�on
Opera�ng temperature
Ingress protec�on IP65
<40 dB
Smart cooling
Max. opera�on al�tude
Cooling Concept
Noise Emission(Typical)
2000m
Max. Short Circuit Current (A)
MAX inverter backfeed current (A)
Maximum output fault
current (a.c. A, peak )
Maximum output overcurrent
protec�on (a.c. A,peak)
>20 YearsDesigned Life�me
33.3/31.9A30/28.7A
30.3/29A27.3/26.1A 37.9/36.2A
41.7/39.8A
VDE4105, IEC61727/62116, VDE0126, AS4777.2, CEI 0 21,
EN50549-1, G98, G99, C10-11, UNE217002, NBR16149/NBR16150
Grid Connec�on Standard
Opera�on surrounding humidity 0~100%
Safety EMC / Standard
IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2
-25 ~ 65℃,>45℃ dera�ng
- 63 -
MC-4 mateableDC Connec�on
IP65 rated plugAC Connec�on
LCD1602Display
RS485/RS232/Wifi/LANInterface
General Data
2022-12-23 Ver 2.3
Add: No.26-30, South Yongjiang Road, Beilun, 315806, Ningbo, China
Fax: +86 (0) 574 8622 8852
Tel: +86 (0) 574 8622 8957
E-mail: [email protected]
Web: www.deyeinverter.com
