Installing a variable-frequency drive (VFD) on the power frequency motor can complete the accurate control and speed regulation of the motor, and improve the efficiency and accuracy of the motor. However, if not properly equipped and used, it may cause the following hazards:
Motor overheating: The voltage and frequency of the VFD output are variable, if the setting is not proper or does not conform to the characteristics of the motor, it may cause the motor to overload or the internal temperature of the motor to be too high, and then damage the motor or shorten its service life.
Electromagnetic disturbance: The high-frequency current and electromagnetic waves output by VFD will disturb the surrounding electrical equipment, which may cause abnormal work or shortcomings of other equipment.
Oscillation and noise: Changes in the voltage and frequency of the VFD output will cause the motor to oscillate and increase noise, which may affect the normal operation of the equipment and the working environment of the personnel.
Safety accidents: Incorrect equipment and the use of VFD may cause safety accidents such as motor short circuit, electric shock, fire, etc., and then endanger the life and wealth of personnel.
Therefore, when the VFD is stopped for the power frequency motor, the appropriate VFD and sensor should be selected, and the correct parameter setting and debugging should be stopped according to the additional parameters and characteristics of the motor to ensure that the equipment works safely and reliably. Together, in the process of equipment and operation, relevant safety specifications and operating procedures should be followed, and sufficient inspections and tests should be stopped to ensure the normal operation of the equipment and the safety of personnel.
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