Emerson Liebert EXM User Manual page 87

Table 38 UPS status messages (continued)
Event Message
Bypass Phase Reversed
Load Impact Transfer
Transfer Timeout
Load Sharing Fault
DC Bus Abnormal
System Transfer
DC Bus Overvoltage
LBS Active
Battery ground fault
Inverter turned On
manually
Inverter turned Off
manually
EPO
Transfer Confirm
Transfer Cancel
Unit Off Confirm
System Off Confirm
Fault Reset
Alarm Silence
Turn On Fail
Alarm Reset
Bypass Mode
Normal Mode
Battery Mode
Output Disabled
Maint. Disconnect Closed
Reserved
Output Disconnect Open
Battery Reverse
No Battery
Auto start
BCB closed
Description / Suggested Action (if any)
The phase sequence direction of bypass voltage is reversed.
Normally, the phase of Phase B lags 120 degrees behind Phase A, and the phase of Phase C
lags 120 degrees behind Phase B.
Verify that the phase rotation of the bypass supply presented to the UPS is correct, and rectify it if
it is found to be in error. Contact Liebert Services at 800-543-2378 for assistance.
A transfer to bypass occurred due to a large step load. The UPS should recover automatically.
Turn on connected equipment in sequential order to reduce the step loading of the inverter.
The load is on bypass power due to excessive number of transfers that occurred within the last
hour.
The UPS will recover automatically and will transfer the load back to inverter power within an
hour.
UPS working within a parallel system are not sharing load current correctly. Contact Liebert
Services at 800-543-2378 for assistance.
Shut off inverter due to abnormal DC bus voltage.
Contact Liebert Services at 800-543-2378 for assistance.
The whole paralleled UPS system transferred to bypass at the same time. This message will
appear on the UPS which passive transfer to bypass.
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.
The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus
configuration.
Battery ground fault from dry contact signal. Contact Liebert Services at 800-543-2378 for
assistance.
Manual Turn On via front panel
Manual Turn Off via front panel
Emergency Power Off
Interrupted Transfer Confirm
Interrupted Transfer is cancel
Unit Turned Off Confirm
System Turned Off Confirm
Fault Reset
Alarm Silence
Turn On Fail
Audible Alarm Reset
UPS in Bypass Mode
UPS in Normal Mode
UPS in Battery Mode
UPS Output Disabled
Maintenance Disconnect Closed
—
Output Disconnect Open
Connect the battery again and check the wiring of batteries.
Check the battery and the wiring of batteries.
After UPS was shutdown at EOD, inverter auto starts when utility is restored.
BCB closed from dry contact signal.
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Maintenance
® ™
Liebert eXM