Abnormal noise in variable-frequency motor
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When the frequency of the variable-frequency motor is between 60 and 70, the motor produces abnormal noises; the sound is quite deep. Could someone please tell me what might be the cause?
The operating frequency of an induction motor is generally allowed to be adjusted up to 60HZ at most; any higher frequency would overload the bearings and pose a safety risk. The specifications should be indicated on the motor’s nameplate!
A dull noise indicates that the motor is under heavy load; it is possible to choose a motor with a higher power rating
The motor can reach 100Hz. It doesn’t have to be 60.
What is the power range of your motor? ? Has the specified frequency been exceeded?