Vertiv Liebert EXM, User Manual

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Vertiv™ | Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual | 69
Load Impact Transfer
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.
Transfer Timeout
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.
Load Sharing Fault
UPS working within a parallel system are not sharing load current correctly. Contact Vertiv
™
Services at
800-543-2378 for assistance.
DC Bus Abnormal
Shut off inverter due to abnormal DC bus voltage.
Contact Vertiv
™
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 Vertiv
™
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 Vertiv
™
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
Load on Bypass UPS is in Load on Bypass Mode
Load on Inverter UPS is in Load on Inverter Mode
Load on Battery UPS is in Load on 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.
Table 31 UPS status messages (continued)
Event Message Description / Suggested Action (if any)