Emerson Liebert NXL 250 kVA, Operation And Maintenance Manual

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UPS Alarm and Status Messages
81 Liebert
®
NXL
™
Batt Ovtemp Limit
One or more of the Battery Temperature
Sensors is reporting a temperature above the
limit setpoint.
There are two user adjustable Battery
Temperature Setpoints: Battery Over
Temperature Warning and Battery
Overtemperature Limit. The temperature in one
or more battery compartments has risen above
the limit setpoint.
Depending on user settings, the controls may trip
the battery breaker associated with the over
temperature condition.
Press “SILENCE” to silence the audible alarm.
Observe the One-Line Display. To identify which
battery cabinet is reporting the temperature
condition, press the “Battery Box” on the One-Line
Display to cycle through each battery compartment
or string. The temperature display is located under
the voltage reading in the Battery Box.
If the Common Battery Disconnect and/or the
individual battery cabinet or string reporting the
over temperature condition is tripped, check the
following settings.
Press “User Settings,” “Battery Management,”
“Battery Temperature” to check the current Battery
Temperature Setpoints. If none of the Battery
Boxes on the One-Line Display exhibit a
temperature in excess of the temperature setpoint
in the user settings, contact your factory-
authorized service provider.
If the over temperature limit is being reported
correctly, investigate potential causes such as
faulty air conditioning, or air flow blockage and
resolve. Otherwise, contact your factory-authorized
service provider.
Batt Ovtemp
Warning
One or more of the Battery Temperature
Sensors is reporting a temperature above the
warning setpoint.
There are two user adjustable Battery
Temperature Setpoints: Battery Over
Temperature Warning and Battery
Overtemperature Limit. This alarm means the
temperature in one or more battery
compartments has risen above the warning
setpoint.
This alarm is self-clearing. When the condition is
no longer present, the alarm and any control
activity tied to the alarm reverts to normal.
Press “SILENCE” to silence the audible alarm.
Observe the One-Line Display. To identify which
battery cabinet is reporting the temperature
condition, press the “Battery Box” on the One-Line
Display to cycle through each battery compartment
or string. The temperature display is located under
the voltage reading in the Battery Box.
Press “User Settings,” “Battery Management,”
“Battery Temperature” to check the current Battery
Temperature Setpoints. If none of the Battery
Boxes on the One-Line Display exhibit a
temperature in excess of the temperature setpoint
in the user settings, contact your factory-
authorized service provider.
If the over temperature warning is being reported
correctly, investigate potential causes, such as
faulty air conditioning or air flow blockage and
resolve. Otherwise, contact your factory-authorized
service provider.
Batt Self Test
The UPS is performing a battery self test.
The battery self test terminates automatically at
the end of the test.
Battery test settings are adjustable and can be
accessed by pressing “Config,” “User Settings,”
“Batt Mgt,” “Battery Test.”
This status message is self-clearing. When the
condition is no longer present, the message and
any control activity tied to the status event
reverts to normal.
During normal operation, no user response is
required.
The battery test can be terminated at any time by
the user by pressing “Batt Mgt,” “Manual Battery
Test,” “Stop.”
Batt Sensor Fail
The controls are sensing a failed Battery
Temperature Sensor.
If a sensor reports a value outside the normal
operating range of the sensor, it is considered
failed.
This alarm is self-clearing. When the condition is
no longer present, the alarm and any control
activity tied to the alarm reverts to normal.
Press “SILENCE” to silence the audible alarm.
Try to identify which sensor has failed by observing
the temperature reading inside the Battery Box on
the One-Line Display. Cycle through all connected
batteries by pressing the Battery Box on the
display.
Contact your factory-authorized service provider.
Table 10 Liebert NXL alarm and status messages (continued)
Event Message Event Definition Recommended Action