Emerson Liebert NXL series Operation And Maintenance Manual page 93

Liebert NXL UPS
Event Message Event Definition
REPO Shutdown
The UPS shuts down in response to an
active Remote Emergency Power Off
(REPO) command.
Restart in
Automatic Restart is in progress. This
Process
message clears when the Automatic
Restart sequence is complete.
Restart Inhibited
Automatic Restart of the UPS is not
allowed because of an external signal.
Automatic Restart Inhibit is active
when signaled from an external source.
The signal is wired into Input Contact
Interface (ICI 1).
Service Code
This event is for informational purposes,
Active
and informs the user that Service Code
is currently running.
This status message is self-clearing.
When the condition is no longer present,
the alarm and any control activity tied
to the alarm reverts to normal.
Temp Sense Fail
An equipment temperature sensor is
reporting an invalid temperature. The
controls ignore temperatures from a
failed sensor.
Xfer to Byp
An event (such as an Inverter fault)
Failed
caused an attempted automatic transfer
to bypass and the transfer failed.
The controls detect the Static Bypass
Switch (BPSS) failed to assume the load
and the Inverter was off.
Liebert NXL alarm and status messages (continued)
Page 93
Operation and Maintenance Manual 250-300-400-800kVA
Recommended Action
Press "SILENCE" to silence the audible
alarm.
Resolve the issue that precipitated the
REPO.
For safety, the UPS latches an REPO
event. There are two ways to clear the
latch:
1. Press the Reset pushbutton on the
External Interface Board (EIB).
2. From HMI front panel display, press
OK button when " Press OK to Reset EPO
Latched signal" message is displayed in a
dialog box.
Verify the REPO is cleared by observing
the REPO alarm in the Active Event
Window is gone.
Restart the UPS by pressing "Startup,"
"Manual Start," and follow the prompts.
To complete the Automatic Restart, follow
the prompts on the display.
Investigate and resolve the external
signal forcing the UPS to remain off.
If you do not have an ICI, or if there are
no external off signals input to the UPS,
contact your factory-authorized service
provider.
Under normal circumstances, none.
If this message is active, and Service
Code is not loaded, contact your factory-
authorized service provider.
Press "SILENCE" to silence the audible
alarm.
Press "RESET" to clear the alarm.
If the alarm cannot be reset, or if the
alarm condition returns, contact your
factory-authorized service provider.
Press "SILENCE" to silence the audible
alarm.
Check the Event Log by pressing "Status
Reports," "Event Log" to investigate why
the UPS tried to transfer to bypass and
why the BPSS failed.
If Q3 is available (as displayed on the
One-Line Display), close Q3 to restore
power to the load.
Press "RESET" to attempt to clear any
latched alarms or faults.
If conditions appear normal, attempt to
restart the UPS by pressing "Startup,"
"Manual Start" and follow the prompts.
Contact your factory-authorized service
provider.