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Trap Fuse
Fail
Trap Fuse Fail Fault NO YES NO YES
On units equipped with an input filter,
Control Logic has determined that one or
more of the filter fuses is open. The logic
will open the Input filter contactor. The UPS
will continue to run, without input filtering.
Contact Liebert Global Service to check
and repair the input filter.
On Battery On Battery Alarm NO NO NO YES
Reports an On Battery state as long as the
battery CB is closed, Input Undervoltage
alarm exists, and the status bit ON UPS is
set.
Battery
Overcharge
Battery
Overchg
Fault YES YES NO YES
Battery charge current is 50% above the
Battery Charge Current Limit for longer than
5 seconds. The load will be transferred to
Bypass. If Bypass is not available the UPS
will attempt to run from the battery. If both
battery and bypass are not available, a full
system shutdown will be initiated. This fault
will inhibit start-up. Contact Liebert Global
Services immediately
Byp Freq
Error
Bypass
Frequency
Error
Fault NO NO NO YES
The bypass frequency is outside the ± 5%
of the system rating. If the load is on
bypass the static switch will be shut down
and power will be lost to the load. If the load
is on UPS, transfer to bypass will be
inhibited, until this fault clears or is
corrected. This fault will inhibit startup. If
fault persists check the bypass source for
the cause of the frequency irregularity.
Contact Liebert Global services if you have
questions.
Byp ovld
Shutdown
Bypass
OverLoad
Shutdown
Fault YES YES NO YES
With the load on Static Bypass the system
has determined that at least one phase of
the Bypass has exceeded the KVA, KW, or
RMS current vs. Time overload spec. The
Static Bypass switch will be turned of and
the system will be shut down. Power to the
load will be turned off. Remove the excess
load from the UPS and attempt to re-start. If
the load is below the rating of the UPS and
it will not re-start, contact Liebert Global
Services.
Byp Phase
Rot Error
Bypass Phase
Rotation Error
Fault NO NO NO YES
The power conductors on the bypass line
are not wired to the UPS in the required
sequence. This alarm should appear only
during initial start-up or after a repair to the
source power system. Disconnect power
from the bypass line and correct the wiring.
Liebert Global Services must be present
during initial start-up of your UPS System.
IDC Peak IDC Peak Fault YES YES NO YES
The system has detected a failed IGBT.
The unit will transfer to Bypass if available.
Contact Liebert Global Services
immediately.
Table 7 Alarms, functions, and corrective actions (continued)
Actual
Alarm/fault
Name
Displayed
On Front
Panel
Description
of Alarm/
Fault
Fault
Or
Alarm
Latch
Mask
Dial
Mask
Freeze
Mask
Event Log
Mask Meaning and Corrective Action(s)