Communication

5.3.2Battery 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 at a remote location.

NOTE

Remote Power Off will be performed by NO contact.

A current-limited source for this optocoupler (+12VDC, 50mA) will be available from UPS.

The connection to the Liebert® GXT3for remote connection will be via terminal block connector.

Battery mode shutdown wiring must conform to all national, regional and local wiring regulations.

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.

5.3.3On 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.

5.3.4Low 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.

NOTE

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

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Emerson 208V, GXT3 user manual Battery Mode Shutdown, On Battery, Low Battery

GXT3, 208V specifications

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