The fault detection methods of permanent magnet motors are as follows:
1, Listen to the sound first, then carefully find the point of failure
In the process of running a permanent magnet motor, if a fine "beep" sound is emitted, there is no change in height and low, which means that this is a normal sound, if the sound sounds thicker and sharper sound, that means this is a harbinger of failure.
2. Use your sense of smell to analyze faults
Permanent magnet motors have no odor during normal operation. If you smell strange, it is a fault signal, such as burnt smell. This taste is caused by the insulation of the grill, and as the temperature of the motor rises. In severe cases, it will also smoke; if it smells like oil, it is mostly caused by lack of oil in the bearing, and the odor of oil and gas evaporates when it is close to the dry grinding state.
3, use the feel to check the fault
We can use the hand to touch the outer casing of the permanent magnet motor. We can roughly judge the temperature rise. If the hand feels hot and the temperature is high, the cause should be checked immediately. For example, it may be Caused by these reasons: excessive load, high voltage, etc., and then troubleshooting for the cause.
