36 Chapter 4 Operator Control And Display Panel
Liebert APM 90 Integrated Modular UPS User Manual
Alarm
Explanation
UPS Shutdown
UPS shutdown with no output power
BCB Open
BCB status (open)
BCB Close
BCB status (closed)
Batt. Float Charging
Battery status (float charge mode)
Batt. 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)
Battery Maintenance
Testing
The user initiated a maintenance test (20% capacity discharge)
UPS system testing
The user initiated a UPS test
Inverter in Setting
The inverter starts up and is in synchronization
Rectifier in Setting
The rectifier starts up and is in synchronization
Battery room alarm
The temperature in the battery room is high and needs to be attended
Battery Reverse
Reconnect battery and check battery wiring
Auto start
After UPS shutdown at EOD, the inverter automatically starts upon mains restoration
Rec Flash Update
Rectifier software being updated
Inv Flash Update
Inverter software being updated
Monitor Flash Update
Monitoring software being updated
LBS abnormal
LBS is abnormal
DSP firmware error
The inverter software and the rectifier software do not belong to the same model
Maint. sw. open
Maintenance bypass switch is open
Maint. sw. closed
Maintenance bypass switch is closed
Output sw. closed
Output switch is closed
Output sw. open
Output switch is open
Bypass not available
The bypass is not ready
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
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.