Liebert Vertiv GXT5, Installer/User Manual

Page: 46 / 136

Installation 38
Figure 2-12 Dry-contact Port and Pin Layout
• Pins 7 and 8 are shorted before delivery.
• 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 opera-
tion, see Connecting a Remote Emergency Power-off (REPO) Switch on page 40 .
Table 2-4 Dry-contact Connection and Pin-out Descriptions
PORT
NO.
PORT
NAME
PIN
NO.
PIN NAME DESCRIPTION
1 Input 1
1 Remote Comms 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
65 ) 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
• Maintenance mode-For 16 & 20 kVA model, If this input is
triggered, it means the UPS is in maintenance mode.
2. Signal Ground Signal Ground