LEGRAND KEOR HP 100kVA, User Manual

Page: 54 / 158

UPS user manual
Manuel de l'utilisateur de l'UPS
Utilizzo dell’UPS
54 OMD10074 REV. C
Alarm A53 FIRMWARE ERROR
Description The controller has detected an incompatibility in the control software.
Possible
causes

The software update was not performed properly.
Solutions 1. Contact our Technical Support Service.
Alarm A54 CAN ERROR
Description Internal error.
Possible
causes

Microcontroller communication problems.
Solutions 1. Contact our Technical Support Service.
Alarm A55 PAR CABLE DISC
Description Parallel cable doesn't communicate.
Possible
causes

Parallel cable disconnected or damaged.
Solutions 1. Check the connection of cable
2. Contact our Technical Support Service.
Alarm A56 MAINS UNBALANCE
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 A63 START SEQ BLOCK
Description During the UPS start-up a failure prevented the proper execution of the
sequence.
Possible
causes

Control devices in wrong position or operated improperly.

Possible internal fault.
Solutions 1. Make sure the position of the control devices (isolators, selectors)
is as specified in the procedures (see “Installation and start-up”
section).
2. If the alarm persists, contact our Technical Support Service.