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5.3 Terminal Block Communication
The Terminal Block includes eight pins, as shown in Figure 21.
Figure 21 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 bypass so that there is no power to the loads.
Any Mode Shutdown can be operated locally and remotely, as described as follows:
• Local Any Mode Shutdown can be performed by shorting Pin1 and Pin2,
• Remote Any Mode Shutdown can be performed by a switch connected to Pin1 and Pin2 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