The motor hums but cannot carry the load, and suddenly shakes violently during operation… Coreless motors are widely used in the fields of industry and home appliances due to their advantages of high efficiency and energy saving, but they are also inevitably subject to various faults in daily use. Understanding these common problems and their solutions can not only reduce downtime losses, but also extend the service life of the motor. Next, we will explore in depth the high-frequency faults that occur during the use of coreless motors and how to deal with them.
The “culprit” behind high-frequency faults
The most common faults of coreless motors are concentrated on performance degradation and abnormal operation. The motor speed is unstable during operation, which is sometimes fast and sometimes slow, which not only affects the normal operation of the equipment, but also may cause reduced processing accuracy. This is often caused by the failure of the Hall sensor or the drift of the drive circuit parameters. The sensor cannot accurately detect the rotor position, resulting in inaccurate motor control. Abnormal heating of the motor is also a major concern for users. Continuous high temperature will not only accelerate insulation aging, but may even cause fire. Damage to the cooling fan, long-term overload operation or poor environmental ventilation will make it difficult for the motor to dissipate heat. In addition, problems such as difficulty in starting the motor and excessive noise are also common. Factors such as bearing wear, magnetic steel demagnetization, and unstable power supply voltage may become the “fuse” that causes the failure.
Prescribe the right medicine to quickly repair the motor failure
For the problem of performance degradation, first of all, regularly check the Hall sensor and drive circuit, use professional instruments to detect whether the sensor signal is normal, calibrate the drive circuit parameters, and ensure that the motor speed control is accurate. For abnormal heating, it is necessary to clean the dust and debris in the motor heat dissipation channel, check the operation of the cooling fan, and replace the fan if necessary; at the same time, strictly control the motor load to avoid long-term overload operation. If the motor has difficulty starting or the noise is too loud, the worn bearings should be replaced in time, the magnetic steel surface should be checked for damage, and the demagnetized magnetic steel should be magnetized; it is also necessary to ensure that the power supply voltage is stable and equipped with a voltage stabilizer to deal with voltage fluctuations. In addition, establishing a regular maintenance mechanism and conducting comprehensive inspection and maintenance of the motor every quarter can effectively prevent most faults from occurring.
Scientific maintenance to make the motor run efficiently
Mastering the solution to the coreless motor failure can not only ensure the stable operation of the equipment, but also reduce the enterprise’s operation and maintenance costs and improve production efficiency. To implement these maintenance measures, they can be carried out in stages. The first step is to immediately carry out basic inspections of the motor, including appearance, connection lines, heat dissipation, etc., to quickly find obvious fault points; the second step is to complete professional testing within a week, using instruments to detect the performance of key components such as sensors, circuits, and magnets; the third step is to perform routine maintenance every month, clean the dust on the surface of the motor, and check the tightness of the screws; finally, perform deep maintenance every six months, replace lubricating oil, calibrate parameters, and ensure that the motor is always in the best working condition.
Although the common faults of coreless motors are troubling, as long as the root cause of the problem is identified and scientific maintenance measures are taken, the failure rate can be effectively reduced. Take action now and maintain the motor according to the staged maintenance steps to make the equipment run more stably and production more efficient. If you still have questions during use, please feel free to consult professionals.