Liebert Emerson NX UPS System - Manual (Page 71)

Operator Control Panel and Display
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Fault Reset Fault clear direct access key pressed
Alarm Silence Silence On/Off direct access key pressed
Turn On Fail
Inverter failed to turn on when Inverter On direct access key was pressed. This may be as a
result of Invalid Operation (Maintenance bypass on) or DC bus or rectifier not ready.
Alarm Reset Fault clear or Silence On/Off direct access key pressed
Bypass Mode Load supplied from AC input bypass supply.
Normal Mode Load supplied from Inverter output through double conversion of the AC mains input supply.
Battery Mode Load supplied from Inverter output through double conversion of the Battery supply.
Source share mode
Load supplied from Inverter output through shared double conversion of the AC mains input
supply and of the Battery supply.
UPS Shutdown UPS Shutdown, output power-down
Check UPS Output Inverter off during normal startup (diagnostics information only)
Generator Connected Generator active signal received. Source share mode may be activated pending UPS settings.
BCB open Battery Circuit Breaker status (open)
BCB closed Battery Circuit Breaker status (closed)
Battery Float Charging Battery status (Float charge mode)
Battery Boost Charging Battery status (Boost charge mode)
Battery Discharging Battery status (discharge mode)
Battery Period Testing Automatic periodic battery maintenance discharge test (20% capacity discharge)
Batt. Capacity Testing User initiated battery capacity discharge test (100% capacity discharge)
Batt. Maint. Testing User initiated maintenance discharge test (20% capacity discharge)
UPS System Testing User initiated UPS self test
Inverter in Setting Inverter starting up and synchronising
Rectifier in Setting Rectifier starting up and synchronising
MBP-T cabinet Fan Fault Maintenance bypass cabinet fans fault.
Ext Input TX Overtemp External Input Isolation Transformer Over Temperature
Ext Output TX Overtemp External Output Isolation Transformer Over Temperature
Battery Room Alarm Environment in Battery Room Needs Attention
Rotary Sw. Test Pos. Rotary switch is in test position.
Rotary Sw. Normal Pos. Rotary switch is in normal position.
Rotary Sw. Bypass Pos. Rotary switch is in bypass position.
Rotary Sw. Maint. Pos. Rotary switch is in maintenance position.
Battery Contactor Open Battery Contactor Open
Battery Contactor Close Battery Contactor Closed
Battery Reverse Connect the battery again and check the wiring of batteries
No Battery Check the battery and the wiring of batteries
Auto start After UPS was shutdown at EOD, inverter auto starts when utility restore
Rec. Flash Update Rectifier firmware is being update
Inv. Flash Update Inverter firmware is being update
Monitor Flash Update Monitor firmware is being update
Input contactor fault Input contactor is in fault
Contactor P.S. 1 fault Contactor Power Supply board 1 Fault
Contactor P.S. 2 fault Contactor Power Supply board 2 Fault
LBS abnormal LBS is abnormal
DSP firmware error The inverter firmware does not match with the rectifier firmware.
Table 22 UPS messages (continued)
Message Description / Suggested Action (if any)