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UPS user manual
OMH44150 REV. B
75
Alarm
A55
2 PARALLEL CABLES DISCONNECTED
Only on IOBM
Description
The systems has detected the disconnection in two points of the parallel
bus cable.
Possible
causes
DIsconnection of the parallel cable in two separate points.
Solutions
1. Verify the connection of the bus cables.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A56
MAINS UNBALANCED
Description
The rectifier input voltage is unbalanced.
Possible
causes
Problems on the LV or MV distribution network
Defect of the measuring circuit
Solutions
1. Check the input voltage
2. Contact our Technical Support Service.
Alarm
A57
INPUT CURRENT UNBALANCED
Only on IOBM
Description
The power modules input currents are not balanced.
Possible
causes
Possible problems in the module input stage.
Anomaly of the system control.
Solutions
1. Contact our Technical Support Service.
Alarm
A58
INVERTER CURRENT UNBALANCED
Only on IOBM
Description
The power modules inverter currents are not balanced.
Possible
causes
Possible problems in the module inverter stage.
Anomaly of the system control.
Solutions
1. Contact our Technical Support Service.
Alarm
A59
RL BACKFEED ON
Description
The relay for the external backfeed protection device has activated.
Possible
causes
Failure of the bypass static switch.
Anomaly of the system control.
Solutions
1. Contact our Technical Support Service.
Summary of Contents for UPSaver 1000 kVa
Page 2: ...UPS OPERATING MANUAL UPSaver 400 1600 kVA ...
Page 5: ......
Page 7: ...Warnings and general information 2 OMH44148 REV A ...
Page 13: ......
Page 20: ...UPSaver installation and start up OMH44149 REV C 7 ...
Page 33: ...UPSaver installation and start up 20 OMH44149 REV C Picture 6 Handling of the power module ...
Page 57: ...UPSaver installation and start up 44 OMH44149 REV C Picture 46 UPS cabinets upper fixing ...
Page 59: ...UPSaver installation and start up 46 OMH44149 REV C Picture 49 Power module cables terminals ...
Page 115: ...UPS user manual 6 OMH44150 REV B ...