3. Trouble Shoot
3-1. Error Messages - Possible Cause and Remedy:
(1) Overcurrent 1 (E 01, E 02, E 03, E 04)
Phenomena: Overcurrent for each condition.
E 01 : Overcurrent during constant speed operation.
E 02 : Overcurrent during deceleration.
E 03 : Overcurrent during acceleration.
E 04 : Overcurrent at other condition than above mentioned.
(such as injection brake)
Cause: Load changed rapidly.
Remedy: Eliminate rapid changed in load.
Cause: Sort circuit or earth contact (ground fault) in the motor or the motor cable.
Remedy: Check with Megger. If the motor cable is disconnected from the inverter, the
overcurrent should not be detected anymore.
Cause: A single-phase power failure (fuse, wire, ...) can cause a shutdown in certain
underload situations..
Remedy: Check all these mains phases and the mains fuses, preferably by comparison of
the three (two in case of single phase inverter) mains currents in a steady
operating state.
Cause: The motor is switched with a motor contactor during frequency inverter operation.
Remedy: Switching over the motor is inhibited.
Cause: Defect in the power component.
Remedy: Check the IGBT portion of ISPM.
Cause: Rapid acceleration or deceleration.
Remedy: Set suitable acceleration or deceleration time.
Cause: Starting frequency is too high.
Remedy: Set starting frequency as low as possible.
Way to Reset: A
3-1
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