Battery Mode Shutdown; On Battery; Low Battery - Emerson Liebert GXT3 Series User Manual

5.3.2

Battery Mode Shutdown

Battery Mode Shutdown permits shutting down the UPS by turning Off the rectifier, inverter and
bypass so that there is no power to the load when the UPS is On Battery.
Battery Mode Shutdown can be performed locally or remotely:
• Local Any Mode Shutdown can be performed by shorting Pin 3 and Pin 4
• Remote Any Mode Shutdown can be achieved by a switch connected to Pin 3 and Pin 4 and
mounted
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 Liebert GXT3 for remote connection will be via terminal block connector.
Battery mode shutdown wiring will follow local wiring codes & 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 shut
down timer. This timer cannot be stopped once triggered. If utility power returns during this
countdown, the Liebert GXT3 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.
5.3.3

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.
5.3.4

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 pro-
gram, this dry contact will be closed.
NOTE
The rated values for the dry contacts are:
• Rated Voltage: 5V
• Working Voltage Range: 4.5-10V
• Rated Current: 30ma
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