UPS Alarm and Status Messages
Liebert
®
NXL
™
80
Batt Discharging
The UPS is on Battery.
The most common reason for going to battery is
a loss of Rectifier input power (power outage).
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. If the input line is
orange, black, or gray, the battery discharging
condition is normal.
If the input line on the One-Line Display is green,
check the Active Event Window for potential fault
conditions that could explain why the UPS is on
battery. An example of this could be “Rectifier
Fault.”
Monitor the UPS during the battery discharge. The
display shows the discharge curve of the battery.
When the Battery Voltage Line touches the End of
Discharge Line, the UPS shuts down.
Check the bypass line on the One-Line Display. If
the line feeding the Static Bypass Switch (BPSS) is
green, the unit can be transferred to bypass by
pressing “Transfer,” “Bypass” to transfer the load
to the bypass source. Note that transferring to
bypass could expose the load to an outage if the
bypass source fails.
If the battery is discharging because of a fault such
as “Rectifier Fault” in the Active Event Window
rather than an actual power outage, transfer to
bypass if available, and contact your factory-
authorized service provider.
Batt Equalizing
The Batteries are being equalized.
Battery equalization stops automatically based
on the Equalize Time Setting.
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.
In normal operation, no user response is required.
Equalize charge can be terminated at any time by
pressing “Battery Management,” “Manual Battery
Equalize,” “Stop.”
Batt Ground Fault
Detected Battery ground current exceeds the trip
setting.
A possible symptom that could cause this alarm
is a leaking battery.
This alarm has a higher detection setpoint than
“Battery Ground Fault Current Warning,” and if
present, means that the Battery Ground Fault
Current is excessive.
This alarm could cause Battery Breakers to trip if
the “Battery Ground Fault Trip Enable” setting is
enabled.
Press “SILENCE” to silence the audible alarm.
Are any Battery Circuit Breakers tripped?
Perform a visual inspection of the batteries in the
tripped string(s). Look for signs of leaking battery
acid or excessively corroded battery terminals.
If there are no visible signs of defective batteries,
press “RESET” to try and clear the alarm.
Close any open breakers one at a time, pressing
“RESET” after each one to see which string is
causing the alarm. The string reporting the fault,
when online, will not allow the alarm to reset.
Once the location is identified, or if the battery
string tests are inconclusive, contact your factory-
authorized service provider.
Batt Not Charging
The UPS just passed a Manual or Automatic
Battery Test and the float voltage has not yet
returned to normal.
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.
Wait 30 minutes and check to see if the alarm has
cleared.
If the alarm does not clear 15 minutes after the
battery test, but does clear within 30 minutes after
the battery test, check the condition of the batteries
(contact your factory-authorized service provider).
If the alarm is still present 30 minutes after the
battery test concluded, check the Event Log by
pressing “Status Reports,” “Event Log” for
additional information and contact your factory-
authorized service provider.
Table 10 Liebert NXL alarm and status messages (continued)
Event Message Event Definition Recommended Action
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