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

OP1: Overvoltage (during acceleration)

Cause:
1) Input voltage is high and showed an abnormal fluctuation.
2) An external connection was made to one of the following systems:
• Power supply capacity is 500 kVA or more.
• The power factor improvement capacitor was opened/closed.
• Equipment is connected that uses thyristor on the same system.
3) Momentary power failure occurred, and tried to start the rotating motor.

Clearing:
1) Use within the power supply voltage range. If no problem is found at the input voltage, install an input AC reactor (option).
2) Install an input AC reactor (option) to help alleviate input voltage spikes and add a small input voltage drop.
3) Set [F301: Auto-restart]. Depending on the characteristic of machinery, [F302: Regenerative power ridethrough] = "1" is also effective
Discussion

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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