Alarm Explana tion
BCB1 Status Abnormal Logic conflict between BCB1 drive signal and backfeed signal
BCB1 Closed BCB1 state (closed)
BCB1 Open BCB1 state (open)
Phase A Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Phase B Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Phase C Out. Fuse Fail Check that the wire jumper on the X3 board is correct
Equalize Chg. Timeout The actual float charging time exceeds the time set by the setting software
MonCAN Comm. Abnor. Communication failure among internal monitoring board and inverter, rectifier and bypass
ParaMonCAN Comm.Abnor. Communication fault between racks
PowerCAN Comm. Abnor. Communication failure among inverter, rectifier and bypass
ParaPowerCANCommAbnor.
Communication failure between different UPSs in parallel system. Check if any UPS is not powered on or
parallel cables are not well connected, then clear the fault to restart the UPS
Discr.Bus Comm.Abnor.
Communication failure between discrete bus inside the rack. It is recommended to confirm that the rear
communication cables connection inside the rack is reliable
ParaDiscrBusCommAbnor.
Communication failure between discrete bus inside the rack. It is recommended to confirm that the rear
communication cables connection inside each rack is reliable, and that the bypass module is fixed
Ambient Overtemp. The overtemperature detection of ambient temperature, which can be set through the setting software
Byp. SCR Fan Abnormal The internal fan of bypass module is faulty
Top-outlet Fan Abnor. The fan of top air outlet is faulty
System Interrupt Xfer Execute the interval transfer under conditions of bypass unable to trace and inverter phase not locked
Para. Cable Abnormal Parallel cables are not well connected, or the cables are damaged
LBS Cable Abnormal LBS cables are not well connected, or the cables are damaged
Loss of Redundancy Loss of redundant capacity
Pwr. Hardware Mismatch The model information set at the host is inconsistent with the actual situation
Module Overtemp. The power tubes of rectifier and inverter inside the module have overtemperature
Charger Overtemp. The power tube of charger inside the module has overtemperature
Table 5.4 Norm al status m essages (continued )
N O T E: For U PS in stalled with the op tional battery m onitor, refer to the user m anual of the battery
m onitor fo r the alarm m essages related to battery cell and charge cu rrent.
N O T E: If the alarm is caused through setting the softw are value by V ertiv authorized engineer, and
you w ish to change the setting values, please contact the V ertiv local custom er service center.
5 Operator Control and Display Panel
102
Vertiv™ Liebert® EXM2 UPS User Manual
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