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

OP2: Overvoltage (during deceleration)

Cause:
1) The deceleration time is short and the regenerative energy is large.
2) [F305: Overvoltage limit operation] is set to "1: Disabled".
3) Input voltage is high or showed an abnormal fluctuation.
4) 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.

Clearing:
1)
• Increase the deceleration time. [dEC: Deceleration time 1], etc.
• When the regenerative energy is large, install a braking resistor.
2) Change [F305] = "0", "2", and "3" to enable the Overvoltage limit operation. When the deceleration time is limited, install a braking resistor (option).
3) Use within the power supply voltage range. If no problem is found in the input voltage, install an input AC reactor (option).
4) Install an input AC reactor (option).

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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