Figure 22 Single Ups Remote Emergency Power Off; Table 8; Epo Input Contact Relays - Emerson Liebert APM 15-90kVA Manual

Table 8

EPO input contact relays

Position Name
J6.1 EPO_NC
J6.2 +12V
J6.3 +12V
J6.4 EPO_NO
NOTE
The Emergency Stop action within the UPS shuts down the rectifier, inverter and static
bypass. It does not internally disconnect the input power supply. To disconnect ALL power to
the UPS, open the upstream feeder breaker(s) when the remote EPO is activated.
NOTE
Normally Closed EPO – J6: 1, 2, these terminals are supplied factory-linked on the Bypass
Module on the UPS and must remain installed if using NO contacts.
NOTE
All auxiliary cables of terminal must be double-insulated. Wire should be 20-16AWG stranded
for maximum runs between 80 and 200 feet (25-60m), respectively.

Figure 22 Single UPS Remote Emergency Power Off

Liebert APM
Bypass Module
Description
EPO Activated when opened to J6.2
EPO Activated when opened to J6.1
EPO Activated when shorted to J6.4
EPO Activated when shorted to J6.3
Remote EPO
(Customer-
Supplied)
UHRF3S67X2 (J6)
Field-Supplied Wiring
37
Electrical Connections—UPS
Single Liebert APM Module
Liebert APM
Bypass Module
X2_J6
UHRF3S67X2
UAM04031-00
Rev. 1
Liebert
® ™
APM