Emerson 000-VA Manuel D’Utilisation

Page de 48
Communication
Liebert
®
 GXT3
26
9.0
C
OMMUNICATION
9.1
Communication Interface Port
The Liebert GXT3 UPS has a terminal block on the rear of the UPS unit. Several signals are provided 
on this port and are assigned as follows.
9.2
Terminal Block Communication
The terminal block includes eight pins, as shown in Figure 16.
Figure 16 Terminal block communication terminals
9.2.1 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 the pins in Set 3.
• Remote Any Mode Shutdown can be performed using a switch connected to the pins in Set 3 and 
mounted at a remote location.
Activation of the Any Mode Shutdown will be logged as an event in the event history log.
NOTE
Remote Power Off will be performed either by NO or NC contact of Any Mode Shutdown.
The current limited source for this optocoupler (+12VDC, 50mA) will be available from UPS.
The connection to UPS for remote connection will be via terminal block connector.
Any Mode Shutdown wiring must conform to all national, regional and local wiring codes and 
laws.
!
WARNING
When the Auto-enable output option is selected and the UPS output is disabled using the pins 
in Set 3, the Liebert GXT3’s output can turn On automatically and without warning if the 
connection to the pins in Set 3 is changed.
1
2
3
4
Low Battery 
Warning
On-Battery 
Warning
Any Mode 
Shutdown
Battery Mode 
Shutdown