Liebert UPS System User Manual
Page 40

Chapter 3 Electrical Assemble
34
Connector
Name of contacts
Board name
input/output
Central contacts for overload
OVR-S
output
Normally open contacts for
overload
OVR-O output
Normally closed contacts for
generator mode
GEN-C output
Central contacts for generator
mode
GEN-S output
J12
J13
J14
Normally open contacts for
generator mode
GEN-O output
+24V power for environmental
signal
+24V power
output
24V power for environmental
signal 1
ENV1
connect to dry
contacts
24V power for environmental
signal 2
ENV2
connect to dry
contacts
J17
24V power for environmental
signal 3
ENV3
connect to dry
contacts
+12V power for environmental
signal
+12V power
output
12V environmental signal
ENV
connect to dry
contacts
NC NC
J16
Ambient temperature input
V-AD
0~5V signal input
Dry contacts H of generator
GEN-H
connect to dry contacts
Dry contacts L of generator
GEN-L
connect to dry
contacts
Emergency shutdown H
UCTRH
connect to dry
contacts
J18
Emergency shutdown L
UCTRL
connect to dry
contacts
NC NC
Power Source of Sensor
+
12V
power output
Battery Temperature
BAT-T
0~5V signal input
J15
GND of Sensor
GND
power output
Terminals J9~J14 are the dry contacts for monitoring that can be used by users.
The relays have central contacts.