LEGRAND KEOR HPE 60 kVA Operating Manual page 1279

Alarm A34
Description A UPS check is necessary.
Possible
causes
Solutions
Alarm A35
Description The UPS is supplied by the diesel generator.
Possible
causes
Solutions
Alarm A36
Description Inverter shutdown due to the operation of the protection sensor as a result
of sudden DC voltage variations.
Possible
causes
Solutions
Alarm A38
Description The load is fed by the inverter. This alarm is active for UPS systems in "ECO"
mode, where the preferential supply is from the bypass line.
Possible
causes
Solutions
Alarm A40
Description The system has detected a failure in the static inverter switch.
Possible
causes
Solutions
54 OMW07104 REV. A
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
SERVICE REQUIRED
 Possible UPS fault.
If the alarm persists, contact our Technical Support Service.
DIESEL MODE
 The auxiliary contact which activates the diesel generator connected
to the UPS is closed, and imposes this operating mode.
Wait for the diesel generator to stop as soon as the mains voltage is
restored.
Check the connection of the auxiliary contact which signals the diesel
generator start, to terminals XD1/XD2.
If the alarm persists, contact our Technical Support Service.
DC FASTSHUTDOWN
 Battery fault.
Check the battery.
Reset the system.
If the alarm persists, contact our Technical Support Service.
INV --> LOAD
 Temporary changeover due to bypass line failure.
Verify the status of the bypass line and check whether other alarms
are present.
If the alarm persists, contact our Technical Support Service.
SSI FAULT
 Possible problems on the loads.
 Static switch fault.
Check the absorption of the loads and the presence of DC
components, if any, on AC current.
If the alarm persists, contact our Technical Support Service.