LEGRAND KEOR HPE Manuel De Fonctionnement page 221

Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
62 OMP06263 REV. B
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
A55 PARALLEL CABLE DISCONNECTED
Parallel cable doesn't communicate.
 Parallel cable disconnected or damaged.
1. Check the connection of cable
2. Contact our Technical Support Service.
A56 MAINS UNBALANCED
The rectifier input voltage is unbalanced.
 Problems on the LV or MV distribution network
 Defect of the measuring circuit
1. Check the input voltage
2. Contact our Technical Support Service.
A57 INVERTER CONTACTOR FAILURE
The inverter conctactor is fault.
This alarm is only active when the contactor is installed an anabled
through eeprom manager.
 Aux contactor Fault.
 Wiring circuit Fault or PCB Fault.
1. Check the auxiliary contact functions, check the interconnection
cables or PCB.
2. Contact our Technical Support Service.
A58 INVERTER CURRENT UNBALANCED
The inverter's bridge currents are not balanced.
 Possible problems in the inverter bridge stage.
 Anomaly of the system control.
1. Contact our Technical Support Service.
A59 RELAY BACKFEED ON
The backfeed protection has been activated. Alarms present only in the
history log.
 Problems on the bypass static switch
1. Check the static switch thyristors.
2. Contact our Technical Support Service.