Liebert S600 - Page 53

Vertiv|Liebert® S600 10kVA ~ 20kVA UPS | User Manual 53
Alarm
Explanation
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
Output LPE short
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 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
Electric leak
Alarm
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)