Emerson Liebert APS Installation Manual download pdf (Page 42)

34 Chapter 4 Operator Control And Display Panel

Liebert APM Modular UPS User & Installation Manual

Alarm Explanation

Alarm silence SILENCE ON/OFF key pressed

Turn on fail

Inverters failed to turn on when the INVERTER ON key was pressed. This may be the result of an

invalid operation (maintenance bypass on) or DC bus or rectifiers not ready

Alarm reset FAULT CLEAR or SILENCE ON/OFF key pressed

Bypass mode The UPS is in bypass mode

Normal mode The UPS is in normal mode

Battery mode The UPS is in battery mode

Check UPS output UPS shutdown with no output power

Generator connected Generated connection signal is received

BCB open BCB status (open)

BCB closed BCB status (closed)

Battery float charging Battery status (float charge mode)

Battery boost charging Battery status (boost charge mode)

Battery discharging Battery status (discharge mode)

Battery period testing The battery is under automatic periodic battery maintenance test (20% capacity discharge)

Batt. capacity testing The user initiated a battery capacity test (100% capacity discharge)

Batt. maint. testing The user initiated a maintenance test (20% capacity discharge)

UPS system testing The user initiated a UPS self-test

Inverter in setting Inverters starting up and synchronising

Rectifier in setting Rectifiers starting up and synchronising

MBP-T cabinet Fans Fault Maintenance bypass cabinet fan fault

Ext Input TX Overtemp External input isolation transformer overtemperature

Ext Output TX Overtemp External output isolation transformer overtemperature

Battery Room Alarm Environment in battery room needs attention

Battery reverse Connect the battery again and check the battery cable connection

No battery Check the battery and the battery cable connection

Auto start After the UPS shut down at EOD, the inverters automatically start upon mains restoration

REC FLASH UPDATE Rectifier software is being updated

INV FLASH UPDATE Inverter software is being updated

MONITOR FLASH UPDATE Monitor software is being updated

Input contactor fault Input contactor fault

Contactor P.S. 1 fault Contactor power supply board 1 fault

Contactor P.S. 2 fault Contactor power supply board 2 fault

DSP firmware error The inverter software does not match the rectifier firmware

SPM Board Not Ready

The acquisition board is not properly connected. Seek technical assistance from the local

customer service center of Emerson

SPM CRC Check Error

Data check error of acquisition arithmetic module. Seek technical assistance from the local

customer service center of Emerson

SPM Branch Curr Over LL

Load too large, exceeding route current low threshold (set by commissioning engineer, 60% of

rated route current by default)

SPM Branch Curr Over HL

Load too large, exceeding route current high threshold (set by commissioning engineer, 80% of

rated route current by default)

SPM Branch Over Current

Load too large, exceeding route overcurrent point (set by commissioning engineer, 105% of rated

route current by default)

SPM Branch 1 Inrush OC

Load too large, exceeding route impact overcurrent point (set by commissioning engineer, 130%

of rated route current by default)

SPM Branch Breaker Fail

Output distribution switch open. Check whether it was caused by human intervention or fault.

Check the load if was caused by fault

SPM Internal Comm Failure Power interruption between bypass module and SPM monitoring module

SPM Maitainance Bypass

Breaker Close

The maintenance bypass switch of the UPS is closed

SPM Output Breaker Open The output switch of the UPS is open

Note: If the alarms are caused by the values set by the Emerson-authorized commissioning engineer using the configuration

software, and the user need to change the setting values, please contact the local customer service center of Emerson

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Emerson Liebert APS Installation Manual Page 42

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