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5
Optional Installation
These connections are optional. Your UPS will function
properly without these connections. Note: Your unit may differ
slightly from these diagrams.
USB and RS-232 Serial
Communications
Use the included USB cable (see ) and/or DB9 serial
cable (see ) to connect the communication port on
your computer to the communication port of your
UPS. Install on your computer the Tripp Lite
PowerAlert Software appropriate to your computer’s
operating system. Your UPS may feature additional
communications ports; these ports may also be connected
to additional computers which have PowerAlert
Software installed. Consult your PowerAlert manual
for more information.
Relay Contact-Closure Connection
Use the included DB9 cable (see ) to connect
specialized electronic equipment to the relay
contact-closure port on your UPS System.See diagram
( ) and chart below to determine signals carried by
this port.
Relay Contact Closure Chart
2b
2a
1b
1a
4-5
1b
1a
3a
3b
1
2
3
2a
LINE FAIL
K1 A
LO BATT
K1 0A
1
2
3
4
5
6
7
8
9
OPENS ON LINE FA IL
CLOSES ON LIN E FAIL
CLOS ES BELOW LOW BATT ER Y
TOP OF DU AL
DB9 (J5/J34)
NO TE :
CLOSES BE LOW MID BATTERY
J5
REMO T E CONTAC TS
COM
MID BAT
K4 A
CO M
COM
OPENS
BELOW MID BATTERY
RE LAYS SH OW N D E -E NE RG IZ ED
OPENS BELOW LOW BATT ERY
2b
Relay Contact Closure Interface Diagram
EPO Port Connection (Select Models Only)
This optional feature is only for those applications
which require connection to a facility’s Emergency
Power Off (EPO) circuit. When the UPS is connected to
this circuit, it enables emergency shutdown of the
UPS’s inverter.
Using the cable provided, connect the EPO port of your
UPS (see ) to a user-supplied normally closed or nor-
mally open switch according to the circuit diagram (see
). The EPO port is not a phone line surge suppressor;
do not connect a phone line to this port.
3b
3a
Line Fail Mid Battery Low Battery
Indication Indication Indication
UPS Operating Pins 1 Pins 2 Pins 7 Pins 8 Pins 4 Pins 5
Conditions & 6 & 6 & 3 & 3 & 9 & 9
AC Input Voltage OK CLOSED OPEN — — — —
AC Input Out of Range OPEN CLOSED — — — —
Battery More than 3 Min. — — OPEN CLOSED — —
Remaining Charge*
Battery Less than 3 Min. — — CLOSED OPEN — —
Remaining Charge*
Battery More than 2 Min. — — — — OPEN CLOSED
Remaining Charge*
Battery Less than 2 Min. — — — — CLOSED OPEN
Remaining Charge*
Open on Close on Close Open Close Open
Line Line Below Below Below Below
Contact Action Failure Failure Mid Mid Low Mid
Battery Battery Battery Battery Battery
* Times are approximate, at full load.
201112103 93-2459.qxd 1/9/2012 12:21 PM Page 5
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