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Related Information
Simplified Operations  |  Parameter Setting  |  Monitoring the Operation Status  |  Trip Information and Remedies  |  Connection Equipment  |  Specifications  |  Warranty Registration

OC1: Overcurrent (during acceleration)

Cause:
1) The acceleration time is short.
2) [Pt: V/f Pattern] does not match the machinery.
3) Momentary power failure occured, and tried to start rotating motor.
4) Tried to run a special motor (impedance small).
5) Tried to run a low inductance motor like a high-speed motor.
6) When [Pt] = "11", polarity of PG is opposite.
7) When [F614: Pulse width of short circuit detection at start] = "0", and [F613] = 2, or 3, inverter output short circuit.

Clearing:
1) Increase the acceleration time. [ACC: Acceleration time 1], etc.
2) Set [Pt: V/f Pattern] according to the type of machinery.
3) Set [F301: Auto-restart]. Depending on the characteristic of the application, [F302: Regenerative power ridethrough] = "1" is also effective.
4) When [Pt] is set to "0", "1", "2", or "7", lower [vb: Manual torque boost 1]. For settings other than "0", "1", "2", or "7", perform auto-tuning with [F400: Offline auto-tuning]. [F402: Automatic torque boost] is set matching the motor.
5) Change the inverter to a larger capacity.

Please reference latest AS3 Instruction Manual more details or latest information.

AS3 fault codes, descriptions, symptoms and suggested remedies can be found in the below links. Each fault code can also be linked to directly from the AS3 by accessing the QR code on a mobile device while the AS3 is currently experiencing the fault.

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