Vertiv Liebert GXT5 - Page 32

NOTE: The emergency power off (EPO) action of the UPS closes the rectifier, inverter and static bypass, but it cannot
disconnect the UPS mains input inside. To completely disconnect the UPS, disconnect the upstream input circuit
breaker when generating the EPO. For details on REPO connection and operation, see Connecting a Remote
Emergency Power Off (REPO) Switch on the facing page.
Port no. Port Name Pin No. Pin Name Description
1 Input 1
1
Remote
Comms
Shutdown 1
User configurable dry contact input that can be set to trigger the events below. The user can also
select the dry contact as either NO or NC. (See System Parameter Options on page45) When NO,
Pins 1 and 2 are shorted to trigger the event. When NC, Pins 1 and 2 are opened to trigger the
event.
Options are:
• Disable (default)
• Battery mode shutdown - If the UPS is running on batteries and this input is
triggered, the UPS shuts down
• Any mode shutdown - If this input is triggered, the UPS shuts down regardless of
current operating mode
2
Signal
Ground
Signal Ground
2 Input 2
3
Remote
Comms
Shutdown 2
User configurable dry contact input that can be set to trigger the events below. The user can also
select the dry contact as either NO or NC. (See System Parameter Options on page45) When NO,
Pins 3 and 4 are shorted to trigger the event. When NC, Pins 3 and 4 are opened to trigger the
event.
Options are:
• Disable (default)
• Battery mode shutdown - If the UPS is running on batteries and this input is
triggered, the UPS shuts down
• Any mode shutdown - If this input is triggered, the UPS shuts down regardless of
current operating mode.
4
Signal
Ground
Signal Ground
3
Battery
Detection
5, 6
EBC
Detection
Automatically detects number of external battery cabinets when pins 5 and 6 are connected to
the detection port, see Installing External Battery Cabinets on page19.
REPO REPO Input 7 +5V REPO power supply, 5 VDC 100 mA.
Table 3.3 Dry Contact Connection and Pin-out Descriptions
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Vertiv™ Liebert® GXT5 UPS Installer/User Guide