Emerson 115-480 Manuel D’Utilisation

DC Bus Abnormal

Shut off inverter due to abnormal DC bus voltage.
Contact Liebert Services at 800-543-2378 for assistance.

System Transfer

The whole paralleled UPS system transferred to bypass at the same time. This message will 
appear on the UPS which passive transfer to bypass.

DC Bus Overvoltage

Rectifier, inverter and battery converter were shutdown because DC bus voltage is too high.
Check whether there is a fault in rectifier side. If no, then check whether overload occurs.
Restart the inverter after resetting the fault. If fault does not clear, contact Liebert Services at 800-
543-2378 for assistance.

LBS Active

The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus 
configuration.

Battery ground fault

Battery ground fault from dry contact signal. Contact Liebert Services at 800-543-2378 for 
assistance.

Inverter turned On 
manually

Manual Turn On via front panel

Inverter turned Off 
manually

Manual Turn Off via front panel

EPO

Emergency Power Off

Transfer Confirm

Interrupted Transfer Confirm

Transfer Cancel

Interrupted Transfer is cancel

Unit Off Confirm

Unit Turned Off Confirm

System Off Confirm

System Turned Off Confirm

Fault Reset

Fault Reset

Alarm Silence

Alarm Silence

Turn On Fail

Turn On Fail

Alarm Reset

Audible Alarm Reset

Bypass Mode

UPS in Bypass Mode

Normal Mode

UPS in Normal Mode

Battery Mode

UPS in Battery Mode

Output Disabled

UPS Output Disabled

Maint. Disconnect Closed

Maintenance Disconnect Closed

Reserved

Output Disconnect Open

Output Disconnect Open

Battery Reverse

Connect the battery again and check the wiring of batteries.

No Battery

Check the battery and the wiring of batteries.

Auto start

After UPS was shutdown at EOD, inverter auto starts when utility is restored.

BCB closed

BCB closed from dry contact signal.

BCB open

BCB open from dry contact signal.

Battery Float Charging

Battery is float charging.

Battery Boost Charging

Battery is boost charging.

Battery Discharging

Battery is discharging.

Battery Period Testing

Battery is period self-testing.

Batt. Capacity Testing

Battery is capacity self-testing.

Batt. Maint. Testing

Battery is maintenance self-testing.

Inverter in Setting

Inverter is in parameter setting.

Rectifier in Setting

Rectifier is in parameter setting.

Batt. Converter Fault

Battery converter output voltage beyond limits or battery fuse failed. Battery converter shuts 
down. Battery backup not available.

Operation Invalid

This record is registered following an incorrect operation.