Liebert 30-130kVA Operation And Maintenance Manual page 91

Table 7 Alarms, functions, and corrective actions (continued)
Actual
Alarm/fault
Name
Displayed Description
On Front of Alarm/
Panel Fault
Inverter
Inv Ovld
Overload
Phase C
Phase C
Low Power
Low Pwr
Factor
Factor Warn
Warning
Pulse Pulse Parallel
Paralleling Activated
Auto
Auto rexfer
Retransfer
failed
Failed
Excessive
Excessive
Auto
Auto Rexfer
Retransfer
Aux Power
Aux Power Fail Alarm
Fail
EPO Power EPO Power
Fail Fail
LBS Power LBS Power
Fail Fail
Fault
Or Latch Dial Freeze
Alarm Mask Mask Mask
Alarm NO YES
Alarm NO YES
Alarm NO YES
Alarm YES YES
Alarm YES YES
NO YES
Alarm NO YES
Alarm NO YES
Event Log
Mask Meaning and Corrective Action(s)
With the load on UPS, PhaseB output KVA
or KW or RMS current has exceeded 105%
of the nominal per phase rating. The UPS
will begin sending the time remaining until a
NO YES
transfer or shutdown will occur, per the
Overload vs. Time Curve. The alarm
condition will clear when the overload
returns to below the nominal rating.
On any output phase that is supplying at
least 15% of its rated KVA, the measured
NO YES
output power factor is below 0.50, leading
or lagging.
With the load being supplied by the inverter,
the measured load current exceeds the
auto-Parallel Current Limit or the Pulse-by-
Pulse Current Limit set point values. If the
Static Bypass is available, the SBS supplies
NO YES supplemental power. If at the end of 10
cycles the load current has not returned to
below 105%, the Static Bypass will be left
on and the inverter will be turned off. If the
over current has cleared the Inverter will be
left on and the SBS will be turned off.
After performing a recoverable transfer to
bypass, with Auto Rexfer enabled, the Auto
Rexfer time out (default=5minutes) has
elapsed before retransfer could be
performed. A manual retransfer must be
NO YES
performed, which will then clear the lockout
and zero the retransfer/ hour counter. If the
manual transfer is inhibited, the Inverter
may be latched off due to another fault.
Contact Liebert Global Services.
The UPS has determined that the actual
number of Auto Retransfers in the past hour
has exceeded the permitted maximum.
(user settable, default=5). This alarm
NO YES should not be issued if auto retransfers are
disabled by setting the maximum attempts
to "0". A manual retransfer must be
performed, which will then clear the lockout
and zero the retransfer/hour counter.
If the unit is supplying power to an Auxiliary
device, this alarm indicates that the system
NO YES
has detected a failure in the Aux. Power
circuit.
If the unit is supplying power to an Auxiliary
device, this alarm indicates that the system
NO YES
has detected a failure in the Aux. Power
circuit.
Power to the Load Bus Sync circuit has
NO YES been lost. Check external wiring. Contact
Liebert Global Services.
83
Operation