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Electrical
Troubles
C 520 L
C 520 X
Maintenance And Repair 7-10
Alarm Diagnosis on Inverter
Display
To resume the operation reset the inverter (cut the power supply by turning main
switch QS1 to OFF), wait 20 sec., and restore the power
E.OC 1
E.OC 2
E.OC 3
E.Ov 1
e.ov 2
E.Ov 3
E.THT
E.THM
Overcurrent peak during acceleration (E.OC1)
Overcurrent peak during costant speed (E.OC2)
Overcurrent peak during deceleration or stop (E.OC3)
Regenerative overvoltage peak during acceleration (E.OV1)
Regenerative overvoltage peak during costant speed (E.OV2)
Regenerative overvoltage peak during deceleration or stop (E.OV3)
Inverter overload peak (electronic thermal relay function) (E.THT)
Motor overload peak (electronic thermal relay function) (E.THM)