Emerson GXT2-10000RT208 Manuel D’Utilisation

If this message is displayed check the following items:

• Verify that the serial communication cable is connected properly.
• Verify that the COM port being used is designated COM1 or COM2.
• Verify that the UPS is either in Inverter mode, Bypass mode, Battery mode, or Off with AC power 

available at the input (AC Input LED on). In each case, the rear fan will be running.

• Verify that the COM port is not in use by other UPS communication software (or non-UPS soft-

ware). If Liebert MultiLink UPS software is installed on the computer, the Liebert MultiLink ser-

vice must be stopped to free the COM port. Liebert MultiLink typically restarts automatically 

whenever the computer restarts.

• The Liebert IntelliSlot port in the UPS CANNOT be in use by an internal, optional communica-

tion card in the UPS card slot. Remove the option card. 

• The program is connected to a UPS that was not designed for this program.

The UPS settings may be monitored using the configuration program while the UPS is operating in 

any mode. If the program is only used to read the present UPS settings, close the program using the 

CANCEL button.
Settings on the UPS Tab or Options 

Tab may be changed only when the 

UPS is Off. Attempting to changes 

these variables when the UPS is run-

ning will result in this error message.
If this message is displayed and you 

do not wish to change any settings, 

close this error message and close the 

configuration program using the Can-

cel button.

If you decide not to change the UPS after modifying the displayed settings, close the configuration 

program using the CANCEL button.

All UPS settings may be changed when the UPS is Off (with AC input power available). Settings on 

the UPS Tab and Options Tab may be changed only with the UPS Off. Settings on the Battery Tab 

may be changed with the UPS On or Off.
If needed, turn the UPS Off to change configuration settings, press the UPS Off button twice within 

four seconds (hold the button one second each time). This will disconnect all power to the load.
Changing any value, or selecting/deselecting any setting in the configuration window will not immedi-

ately change the settings in the UPS. You may modify the displayed settings until you are satisfied 

with the new proposed changes. Settings displayed by the configuration program can always be 

restored to the existing values stored in the UPS by selecting the Refresh key.