Liebert UPS System - 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.