Motor fault detection device based on frequency converter

The invention discloses a motor fault detection device based on a frequency converter, and relates to the field of motors, the motor fault detection device comprises a motor main body, the front of the motor main body is provided with a rotor through a bearing, and the front of the motor main body is provided with a detection part and an auxiliary part; the detection part comprises two warning pipes, the two warning pipes are fixed on the front surface of the motor main body in a mirror image manner, the auxiliary part comprises a mounting frame, the mounting frame is arranged on the front surface of the warning pipes, and the auxiliary part is used for carrying out temporary limiting control on the detection part when a rotor eccentrically rotates, and the detection part is used for detecting whether the rotor eccentrically rotates or not according to the phenomenon of eccentric rotation of the rotor. A user is warned and reminded through the sharp warning sound generated by the detection part, so that the u