59
Vertiv I Liebert ITA2 30kVA I Manual
Alarm message
Description
Inverter overload
Inverter load capacity is larger than the rated value, overload delay time is up, inverter
shuts down. If bypass is available, the system will transfer to the bypass mode, otherwise
the output is failure. Check that the actual inverter load capacity, if overloaded, just
reduce the load capacity, and the system will transfer to the inverter mode after five
minutes with alarm cleared
Bypass phase
reversed
The bypass voltage phase sequence is reversed. Normally, phase B lags phase A of 120
degrees, and phase C lags phase B of 120 degrees.
Check that the UPS bypass input phase sequence is correct. If not, just modify it
Bypass overcurrent
The bypass current exceeds the rated value. Overload delay time is up, inverter shuts
down
Parallel bypass
cable connection
abnormal
The bypass phase number is different from the output phase number under 'Monitor'.
Please check that the bypass cables connection is the same as the configured phase
number
Byapss abnormal
Maybe caused by bypass voltage and frequency outside of range, bypass power-off and
incorrect bypass cables connection.
1. Check that the bypass voltage and frequency are within the setting range.
2. Check the bypass cables connection
Bypass abnormal in
ECO mode
The ECO mode is available, and the bypass voltage and frequency are outside of the
setting range. Check that the bypass input voltage and frequency are within the setting
range
Input
neutral-ground
abnormal
The output and enclosure are shorted. Check whether the output cables connection and
the enclosure are shorted or not
Output pending
Remote shutdown is enabled, and the system will be off
Output voltage
abnormal
The internal output disconnect. Check output fuse and relays
Output disabled
The system is in standby state, and the dry cntact shutdown is enabled. Check whether
the shutdown dry contact is enabled or not
Version
incompatible
The version between monitoring board and DSP board is incompatible
Input
neutral-ground
abnormal
Short circuit between bus and enclosure or between battery and enclosure. Check
whether the bus and battery cables connection are shorted with the enclosure or not
On maintenance
bypass
The dry contact in maintenance bypass state is activated
Battery mode
The UPS is on battery, and the inverter starts
Bypass mode
The UPS is on bypass
System overload
The parallel system load capacity is larger than the max. load capacity outputed by
parallel sets. Confirm the parallel system load capacity, if overloaded, just reduce it
Loss of
redundancy
After the parallel redundancy is enabled, the system load capacity is larger than the rated
load of (online set minus one)
Load sharing
abnormal
Load sharing is abnormal in parallel system
System parallel
settings async
Check that parallel setting parameters of each unit are the same
Local parallel
settings async
Check that the Settings page is the same between this local unit and other units
LBS abnormal
Check whether the LBS cables are nromal, the system is in stand-by state, or system on
bypass and the bypass unable to trace
REPO
Shutdown caused by the REPO terminal Normally Closed contact open
Bypass phase
reversed
During parallel connection, the bypass phase sequence is not the same. Check the
parallel bypass cables connection
