Emerson Liebert NX 480V User Manual page 104

Table 36 UPS status messages
Event Message
DC Bus Overvoltage
Parallel Connect Fault
Bypass Overcurrent
LBS Active
Battery ground fault
Inverter turned On
manually
Inverter turned Off
manually
EPO
Transfer Confirm
Transfer Cancel
Unit Off Confirm
System Off Confirm
Fault Reset
Alarm Silence
Turn On Fail
Alarm Reset
Bypass Mode
Normal Mode
Battery Mode
Check UPS output
Output Disabled
Generator Connected
Input CB Open
Input CB Closed
Bypass CB Open
Bypass CB Closed
Output CB Open
Output CB Closed
Maint. CB Open
Maint. CB Closed
Battery Reverse
No Battery
Auto start
BCB closed
BCB open
Description / Suggested Action (if any)
Rectifier, inverter and battery converter were shut down because DC bus voltage is too high.
Check whether there is a fault in rectifier side. If not, check whether overload occurs.
Restart the inverter after resetting the fault. If fault does not clear, contact Liebert Global
Services at 800-543-2378 for assistance.
The parallel cables are not connected correctly in a parallel system.
Reset the fault by pressing the Fault Clear button, then restart the inverter by pressing the
Inverter On button.
If the UPS does not resume normal operation, contact Liebert Global Services at
800-543-2378 for assistance.
Bypass current is over limit above 135% rating. The UPS just alarms and does nothing. Refer to
your installation documentation or contact Liebert Global Services at 800-543-2378 for
assistance.
The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus
configuration.
Battery ground fault from dry contact signal. Contact Liebert Global Services at 800-543-2378
for assistance.
Manual Turn On via front panel
Manual Turn Off via front panel
Emergency Power Off
Interrupted Transfer Confirm
Interrupted Transfer is cancel
Unit Turned Off Confirm
Parallel System Turned Off Confirm
Fault Reset
Alarm Silence
Turn On Fail
Audible Alarm Reset
UPS in Bypass Mode
UPS in Normal Mode
UPS in Battery Mode
UPS Shutdown, output power-down
UPS Output Disabled
Generator is connected and a signal is sent to UPS
Input CB is Open
Input CB is Closed
Bypass CB is Open
Bypass CB is Closed
Output CB is Open
Output CB is Closed
Maintenance CB is Open
Maintenance CB is Closed
Connect the battery again and check the wiring of batteries
Check the battery and the wiring of batteries
After the UPS was shut down at end of discharge, inverter auto starts when utility is restored
BCB closed from dry contact signal
BCB open from dry contact signal
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UPS Status Messages