When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万一
频器出现故障时，可工频驱动，转速不可调。
频机;频器When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable.
万一频器出现故障时，可工频驱动，转速不可调。
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