6.3.2 Battery Mode Shutdown
Battery Mode Shutdown permits shutting down the UPS by turning Off the rectifier, inverter and static
switch so that there is no power to the load when the UPS is On Battery. The auxiliary power for the UPS
will still be active.
Battery Mode Shutdown can be performed locally or remotely:
• Local Battery Mode shutdown can be performed by shorting pins 3 and 4.
• Remote Battery Mode Shutdown can be performed using a switch mounted in a remote
location and connected to pins 3 and 4.
NOTE: Remote Power Off will be performed by NO contact.
A current-limited source (+12VDC, 50mA) will be available from UPS.
The connection to the GXT4 for remote connection will be via terminal block connector.
Battery Mode Shutdown wiring must conform to all national, regional and local wiring codes and laws.
This signal must last for 1.5 seconds or longer.
A battery shutdown signal will not cause an immediate shutdown. It will start a 2-minute shutdown
timer. This timer cannot be stopped once triggered. If the mains power returns during this countdown,
the GXT4 will still shut down and must remain shut down for 10 seconds. Whether the UPS turns back
On when the power is restored depends on the auto-restart setting.
6.3.3 On Battery
On Battery signal is a Normally Open (NO) dry contact. When the UPS is supplying output power from the
battery this dry contact will be closed.
6.3.4 Low Battery
Low Battery signal is a Normally Open (NO) dry contact. When the UPS is supplying output power from
the battery and has reached the Low Battery Warning time selected in the configuration program, this
dry contact will be closed.
The rated values for the dry contacts for the On Battery and Low Battery signals are:
• Rated Voltage: 30V (AC or DC)
• Rated Current: 300mA
Vertiv | Liebert® GXT4™ Installer/User Guide
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