When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万
器出现故障时，可工驱动，转速不可调。
机;器When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万器出现故障时，可工驱动，转速不可调。
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