Emerson Liebert NXL 250 kVA, Руководство по эксплуатации и обслуживанию

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UPS Alarm and Status Messages
Liebert
®
NXL
™
88
Inlet
Ovtemp
The air flowing into the UPS is too warm.
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 Inlet Air Temperature on the One-Line
Display and verify the reading is accurate, i.e. is
the room temperature warmer than normal?
If the room temperature is warmer than normal,
investigate and resolve the issue.
If the room temperature is normal, and the Inlet Air
Temp reading on the One-Line Display is higher
than normal, contact your factory-authorized
service provider.
Inp Phase
Rotation
The correct input phase rotation should be
clockwise, or A-B-C. This alarm indicates the
sensed input phase rotation is counter-
clockwise. If this alarm occurs on an operational
unit, it typically indicates upstream work was
performed (input side) and the input wiring was
connected incorrectly.
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.
Verify correct phase rotation at the input.
If the phase rotation is correct, contact your
factory-authorized service provider.
Input Breaker
(BIB) Open
The bypass isolation breaker indicates that it is in
the open position.
Input Breaker
(RIB) Open
The rectifier isolation breaker indicates that it is
in the open position.
Input
Contact
“XY”
The displayed text for this alarm depends on
settings.
In response to this alarm, the user may see any
of four possible messages:
No message at all, but the help icon is present;
A custom message programmed by the user;
“Input Contact XY” if the contact is unconfigured;
“Stop Batt Charge” if the contact is programmed
as Pre-assigned.
If this event is active, an external signal is wired
into channel Y of Input Contact Isolator #X.
If the display shows Case 1 above (blank
message), it means the contact channel is set to
default but the default message was erased.
If the display shows Case 2, the user-
programmed event is active and the displayed
text is customer defined.
If the display shows Case 3, the contact is active
but was not pre-programmed (default condition).
If the display shows Case 4, the controls disable
Battery charging operation.
This alarm message is self-clearing. When the
condition is no longer present, the message and
any control activity tied to the alarm will revert to
normal.
Check the wires landed on Input Contact Isolator
#X.
If this signal is not active, or if no signal wires are
present, contact your factory-authorized service
provider.
Input
Current
Imbal
The detected input currents are not balanced.
This latching alarm indicates a potential problem
in the input filter. The controls automatically open
the filter contactor in response to this condition.
The filter contactor must be manually closed
once it opens in response to this alarm.
Press “SILENCE” to silence the audible alarm.
Press “RESET” to attempt to clear the alarm
condition.
If the alarm clears, press “Startup,” “Device
Control,” “Close Trap” to manually close the filter
contactor.
If the contactor remains closed, check the Input
Meter and verify the input currents are balanced.
If the contactor re-opens and the “Input Current
Imbalance” returns, silence the alarm, leave the
filter contactor open, and contact your factory-
authorized service provider.
Table 10 Liebert NXL alarm and status messages (continued)
Event Message Event Definition Recommended Action