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Related Information
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Random switching

Function
The inverter noise can be reduced by decreasing the carrier frequency.

You can respond to unpleasant motor magnetic noise by increasing the carrier frequency or changing the tone with the random switching.

Adjustment of carrier frequency is effective when a resonance with a load machine or motor fan cover occurs.

However, note that a low carrier frequency causes the motor magnetic noise to increase, and a high carrier frequency causes the inverter noise to increase.

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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