User Manual 10H52258UM60 - Rev. 3 - 01/2019
44
APM 400/600
Operation Control and Display
Alarm
Description
Output Volt. Abnormal
At least one phase of the output voltages is abnormal
Output Overload
This alarm appears when the load exceeds 105% of the nominal rating. This
alarm is reset automatically once the overload condition is resolved
System Overload
This alarm appears when the total load exceeds 105% of the nominal rating of
the parallel system. This alarm is reset automatically once the overload
condition is resolved
Out. Overload Timeout
The UPS overload status persists and the overload times out.
When the time interval has expired, the load automatically transfers to the
bypass
Load Impact Transfer
A transfer to bypass occurred due to a large step load. The UPS can recover
automatically. Switch the load equipment on in stages in order to reduce the
impact on the inverter
Excess Auto Rexfers
The load remains on bypass power due to the excessive number of transfers
that have occurred during the past hour
Excess ECO Auto Xfers
The load remains on bypass power due to the excessive number of transfers
that have occurred during the past hour
Load Sharing Abnormal
The UPS units in a parallel system are not sharing the load current correctly
Other Module Xfer
All UPS units in the parallel system transfer to bypass at the same time when
one of them needs to transfer to bypass. This message appears on the UPS
LCD as passive transfer to bypass
Control Power Fail
Auxiliary power failure or power-off
EPO
The EPO button on the operator control and display panel has been pressed or
a remote EPO command has been received
Fan Abnormal
At least one fan is faulty
Operation Invalid
The maintenance bypass switch is closed when the parallel system is on
inverter, or the output and maintenance bypass switches are closed when the
inverter is running
LBS Active
The LBS setting is active
LBS Abnormal
LBS is abnormal
Input Switch Open
The input switch is open
Maint. Switch Open
The maintenance bypass switch is open
Maint. Switch Closed
The maintenance bypass switch is closed
Bypass Switch Open
The bypass switch is open
Output Switch Open
The output switch is open
Charger Fault
There is a fault on the battery charger
Discharger Curr. Limit
The discharge current is over limit, close the discharger
Auto start
After UPS shutdown at EOD, the inverter automatically starts when mains
power is restores
Batt. Equalize Charge
The battery has forced to the boost charge state
Rectifier DSP Update
Rectifier DSP software being updated
Rectifier FPGA Update
Rectifier FPGA software being updated
Inverter DSP Update
Inverter DSP software being updated
Inverter FPGA Update
Inverter FPGA software being updated
Bypass DSP Update
Bypass DSP software being updated
Bypass FPGA Update
Bypass FPGA software being updated
Monitor Update
Monitoring software being updated
Flash Operate Fail
Historical record not saved
Remote Turn On
Switch the inverter on using the service command
Remote Turn On Fail
Caused by invalid operation (maintenance bypass switch closed), DC bus or
rectifier not ready
Remote Turn Off
Switch the inverter off using the service command
No Battery
Check the battery and battery connections
Discharger Fault
Bus voltage abnormal
Battery Reversed
Reconnect the battery and check the battery wiring
