Emerson Liebert NXL 250 kVA, Руководство по эксплуатации и обслуживанию

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UPS Alarm and Status Messages
Liebert
®
NXL
™
90
Inv Overload
Ph B
An overload condition is active on B phase.
B phase load condition exceeds 105%.
A countdown timer is displayed on the One-Line
Display in response to this alarm, and indicates
the time remaining until a transfer to bypass
occurs. The length of time remaining until
transfer is directly proportional to the severity of
the overload.
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.
Check the Module Output Meter and note the B
phase load percentage.
If possible, reduce B phase loading.
If the steady state load remains above 105%, allow
the UPS to transfer to bypass and contact your
factory-authorized service provider.
If the displayed load percentage is less than 100%
and the alarm is still active, contact your factory-
authorized service provider.
Inv Overload
Ph C
An overload condition is active on C phase.
C phase load condition exceeds 105%.
A countdown timer is displayed on the One-Line
Display in response to this alarm, and indicates
the time remaining until a transfer to bypass
occurs. The length of time remaining until
transfer is inversely proportional to the severity
of the overload.
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.
Check the Module Output Meter and note the C
phase load percentage.
If possible, reduce C phase loading.
If the steady state load remains above 105%, allow
the UPS to transfer to bypass and contact your
factory-authorized service provider.
If the displayed load percentage is less than 100%
and the alarm is still active, contact your factory-
authorized service provider.
Inv Ovld
Exceeded
This message is displayed in response to an
overload on one or more output phases.
When an overload occurs, the controls display a
countdown timer that displays the time remaining
until a transfer to bypass occurs. The length of
the timer is inversely proportional to the
amplitude of the overload. When the timer
reaches zero, the UPS transfers to bypass and
populates the Active Event Window with this
alarm.
This fault is non-latching. When the underlying
condition is no longer present, this fault and any
control activity tied directly to this fault reverts to
normal.
Press “SILENCE” to silence the audible alarm.
Observe the load percentages for each phase on
the Module Output Meter. If the load is less than
100%, attempt to transfer back to Inverter by
pressing “Transfer,” “UPS.”
If the transfer is successful, investigate the reason
for the overload and take appropriate action.
If the transfer is unsuccessful, contact your factory-
authorized service provider.
Inverter
Fault
This summary event indicates a potentially
serious problem in the Inverter.
The controls react to an Inverter fault in different
ways depending on the root event that caused
the fault. If bypass is available, the controls
transfer to static bypass.
A restart may or may not be possible.
Press “SILENCE” to silence the audible alarm.
Check the One-Line Display to determine the state
of the UPS. If both the Rectifier and Inverter are
shut Off, press “RESET” to attempt to clear any
latched alarms or faults.
Attempt a restart by pressing “Startup,” “Manual
Start,” and follow the prompts to place the UPS
back in service.
If the startup fails, contact your factory-authorized
service provider.
If the Rectifier and Inverter appear to be running,
press “RESET” to attempt to clear any latched
alarms or faults, then attempt a transfer by
pressing “Transfer,” “UPS.” If the transfer is
successful, contact your factory-authorized service
provider.
If the transfer is unsuccessful, contact your factory-
authorized service provider.
Inverter Output
Breaker (CB2)
Open
The inverter output breaker indicates that it is in
the open position.
Table 10 Liebert NXL alarm and status messages (continued)
Event Message Event Definition Recommended Action