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Communication
Liebert
®
GXT3
™
24
5.3 Terminal Block Communication
The Terminal Block includes eight pins, as shown in Figure 20.
Figure 20 Terminal Block Communication pin layout
5.3.1 Any Mode Shutdown
The purpose of Any Mode Shutdown is to shut down the UPS output by turning Off the rectifier,
inverter and static switch so that there is no power to the loads.
Any Mode Shutdown can be operated locally or remotely:
• Local Any Mode Shutdown can be performed by shorting Pin 1 and Pin 2.
• Remote Any Mode Shutdown can be performed using a switch connected to Pin 1 and Pin 2 and
mounted at a remote location.
NOTE
Remote Power Off will be performed either by NO or NC contact of Any Mode Shutdown,
depending on the settings in the configuration program.
A current-limited source for this optocoupler (+12VDC, 50mA) will be available from the UPS.
The connection to the UPS for remote connection will be via terminal block connector.
Any Mode Shutdown wiring must conform to all national, regional and local wiring
regulations.
!
WARNING
When the Auto-Enable output option is selected and the UPS output is disabled using Pin 1
and Pin 2, the Liebert GXT3’s output can turn On automatically and without warning if the
Pin 1 and Pin 2 connection is changed.
1
2
3
4
5
6
7
8
Any Mode
Shut Down
Battery Mode
Shut Down
Battery Mode
Low Battery