Vertiv Liebert APM 400 - Page 47

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.
Whe
n 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
A
uxiliary 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 m
aintenance 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 i
nput switch is open
Maint. Switch Open
The m
aintenance bypass switch is open
Maint. Switch Closed
The m
aintenance bypass switch is closed
Bypass Switch Open
The b
ypass switch is ope
n
Output Switch Open
The o
utput switch is open
Charger Fault
There is a fault on the battery charger
Discharger Curr. Limit
The d
ischarge current is over limit, close the discharger
Auto start
After UPS shutdown at EOD, the inverter automatically start
s
when mains
power is restores
Batt. Equalize Charge
The battery ha
s 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 DS
P 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
u
sing
the service command
No Battery
Check the battery and battery connection
s
Discharger Fault
Bus voltage abnormal
Battery Reversed
Reconnect
the
battery and check
the
battery wiring