Chapter 4 Operator Control And Display Panel 33
Liebert APM 90 Integrated Modular UPS User Manual
Prompt
Meaning
Turn on more UPS to carry current load
The number of inverters already turned on is insufficient to carry the existing
load. The user is required to turn on more inverters
Battery will be depleted, confirm or
cancel
If you select battery maintenance test, the battery will discharge until the
UPS shuts down. This prompt appears to require your confirmation.
Cancelling the test will ends the test and transfers the UPS to normal mode
System self test finished, everything is
OK
No action required
Please check the current warnings
Check the active alarm messages
Enter control password
Required for battery or UPS test
Battery Self Test aborted, conditions
not met
Battery self-test condition is not met. Please check whether the battery is in
boost charge state and the load is more than 20%
Battery Refresh Charge aborted,
conditions not met
This prompt appears when you select the Freshening charge command
while the a battery freshening charge condition (such as no battery, charger
failure) is not met
4.5
Alarm List
Table 4-9 provides the complete list of UPS alarm messages supported for display either on the Event menu or
on the Records menu as described in Table 4-7.
Table 4-9
Alarm list
Alarm
Explanation
Comm. Fail
The communication of the internal monitoring board with the inverter, rectifier.
Battery Overtemp.
The battery temperature is over limit. Check the battery temperature and ventilation
Ambient Overtemp.
The ambient temperature is over limit. Check the ventilation of the UPS room
Battery Replaced
Battery test failed. The battery needs replacement
Battery Low Pre-warning
Before the EOD, battery low pre-warning will occur. After this pre-warning, the battery
will have the capacity for three minutes discharging with full load. The time is
user-settable from 3 minutes to 60 minutes. Please shut down the load in time
Battery End of Discharge
Inverters turned off due to battery EOD. Check the mains failure and try to recover it
Mains Volt. Abnormal
The mains voltage is outside specifications and results in rectifier shutdown. Check the
rectifier input phase voltage
Mains Undervoltage
Mains voltage is under limit with derated load. Check the rectifier input line voltage
Mains Freq. Abnormal
The mains frequency is outside specifications and results in rectifier shutdown. Check the
rectifier input voltage and frequency
Batt. Charger Fail
The voltage of the battery charger is too high
Control Power 1 Fail
The UPS is operating but the control power is abnormal or not available
Mains Phase Reversed
The AC input phase rotation is reversed
Rectifier Fault
Internal fault of a power module is detected and results in rectifier shutdown and battery
discharging
Rectifier Overtemp
The temperature of the heatsink is too high to keep the rectifier running. The UPS can
recover from this fault automatically. Check the environment and ventilation
Rectifier Over Current
The rectifier has overcurrent fault
Soft Start Fail
The rectifier can not start owing to low DC bus voltage. Seek assistance from the local
customer service center of Emerson