Vertiv | Liebert EXS 80kVA UPS | User Manual
46
Operator Control and Display Panel
Alarm
Meaning
Bypass Overcurrent Timeout Bypass overload delay timeout, and the bypass shuts down
Battery Reversed
Reconnect battery and check battery wiring
No Battery
Check the battery fuse, battery and battery connection
Battery Overtemperature
Battery ambient temperature is too high. Check whether the battery ambient
temperature is higher than settings value (40 °C by default, settable range: 25-60 °C)
Battery Maintain
Start the battery maintenance discharge test
BCB Open
BCB is opened
Battery terminal short
Check the battery wiring, battery and cabinet port, and battery fuse to verify whether
there is short circuit or arc
Battery Voltage High
After connecting the battery, the system measures that the battery voltage exceeds high
voltage range. Please check whether the battery terminal voltage exceeds normal range
Output Overload
This alarm will appear when the module load exceeds 105% of the rated value. This alarm
resets automatically once the load declines to 95% of rated value
Equalize Charge Timeout
The actual float charging time exceeds the time set by the setting software
Battery Test Fail
The battery self-test condition is not met. The user should verify that the battery is in
boost charge mode and the load capacity is larger than 20%
MonCAN Comms. Abnormal
Communication failure among internal monitoring board and inverter, rectifier and
bypass
PowerCAN Comms.
Abnormal
Internal communication among the inverter, rectifier and bypass gets a failure
Discrete Bus Comms.
Abnormal
Communication failure between discrete bus inside the rack. It is recommended to
confirm that the rear communication cables connection inside the rack is reliable
Ambient Overtemperature
Ambient overtemperature detection, can be set via the host software
Fan Abnormal
At least one fan has fault
External MIB Open
The external maintenance isolating switch is opened
Internal MBB Closed
The maintenance switch is closed
External MBB Closed
The external maintenance switch is closed
Maint Isolation Breaker
Open
The output switch is opened
Module Output Breaker
Open
The external output switch is opened
Load Shed Signal 1 Active
During the battery discharge, if the back-up time or remaining capacity is insufficient,
the load shed signal 1 will be activated
Load Shed Signal 2 Active
During the battery discharge, if the back-up time or remaining capacity is insufficient,
the load shed signal 2 will be activated
Loss of Redundancy
Loss of redundant capacity
MMS Capacity Exceeded
When the output load of the N+X parallel system is larger than N, there will be an alarm
to prompt that I/O switch and cables are bearing rated power exceeding the specified
value
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