Liebert 50 and 60 Hz User Manual page 58

Table 5 Alarm Messages
Alarm Message
Alarm Event
Bad Connection
Battery Charger Inhibited:
load above threshold
Battery Test Failed
Battery Voltage Unstable
Bypass Out-of-Sync
Bypass Overload
Bypass Power Supply Failure
Bypass SCR Short
Bypass Sensing Failure
Bypass Voltage
Out of Tolerance
Incorrect Bypass
Input Frequency
Can't Execute Battery Test:
Not Recharged
52 Operation
Meaning
The Input contact isolator allows the
user to define events outside of the
UPS that will cause an alarm to show
on the UPS. One of those events has
occurred.
An internal connection between PC
boards has come loose or is broken.
The input contact isolator option has
triggered inhibition of the battery
charger and the load is above the
threshold selected by the user to
inhibit battery charging.
The battery test has detected a weak
battery.
A battery cell(s) is not functioning
properly or battery system wiring is
loose.
Bypass input is not stable. UPS
inverter output is not synchronized
with the input power. Automatic
transfers to bypass are prohibited.
This is usually a temporary condition.
An overload condition has exceeded
the capacity of the bypass. If not
corrected a fuse will blow resulting in
a system shutdown.
Control power is outside the
acceptable limits. Bypass is not
available.
The system has sensed unexpected
input voltage. The UPS will transfer
to bypass.
Unit will transfer to bypass due to an
internal sensing failure.
Input power voltage or frequency is
outside of the specified tolerance.
Automatic transfers to bypass are
prohibited except in the case of
inverter failure.
The battery has discharged too
recently (within 72 hours of the
scheduled test time).
Corrective Action
Scroll through the alarm messages to
determine which outside alarm has
occurred. Correct the alarm source
and the alarm message will clear.
Contact Liebert Global Services.
This alarm normally comes when the
unit is being fed by an alternate
source such as a generator. Battery
charging has been temporarily
inhibited to reduce the load on the
secondary source. If the normal utility
is supplying the load check the
programming of the ICI option in the
User's Option Manual. If the unit is
being temporarily supplied by a
secondary source, try to reduce the
load below that sources capacity so
the system can resume charging.
Contact Liebert Global Services if
you have questions or problems.
If there is no charger alarm, then the
battery has either weak cells or loose
connections. Contact Liebert Global
Services for battery service.
Contact Liebert Global Services for
battery service.
If the problem does not correct itself
in 15 minutes contact Liebert Global
Services. Check utility source.
Correct the overload condition. Call
Liebert Global Services if the
condition persists.
Contact Liebert Global Services.
Contact Liebert Global Services.
Contact Liebert Global Services.
In this condition a manual transfer to
bypass is not recommended because
it will be a momentarily interrupted
transfer.
No corrective action is required. The
next scheduled battery test will be
performed.