LEGRAND BSK93, Operating Manual

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UPS user manual
Manuel de l’utilisateur de l’ASI
Utilizzo dell’UPS
OMW07104 REV.A 55
Alarm A41 RECT ERROR LOOP
Description The control is not able to regulate the rectifier output voltage precisely.
Possible
causes

Regulation system failure.
Solutions
Reset the system.
If the alarm persists, contact our Technical Support Service.
Alarm A42 RECTFIER RED. LOST
Description This alarm can be activated by EEPROM setting only on systems with
COMMON BATTERY. The continuity is not guaranteed in case of failure of
one of the rectifiers.
Possible
causes

The total load exceeds the maximum allowed value.

Possible failure on the measuring circuit.
Solutions
Verify the load supplied by the system.
If the alarm persists contact our Technical Support Service.
Alarm A44 DESATURATION (NOT AVAILABLE)
Description The inverter is blocked due to the operation of the desaturation sensor of the
IGBT drivers.
Possible
causes

Inverter bridge fault.
Solutions
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm A46 PAR LOST REDUND
Description This alarm is only active on PARALLEL systems. Continuity is not ensured
in the event of a fault on one of the UPS units.
Possible
causes

The total load is higher than the maximum expected value.

Possible failure on the measuring circuit.
Solutions Check the load fed by the system.
If the alarm persists, contact our Technical Support Service.
Alarm A47 SEND PARAM ERROR
Description Internal error.
Possible
causes

Microcontroller communication problems.
Solutions Contact our Technical Support Service.