The permanent magnet variable frequency motor has been widely used in modern industrial production. It is a new type of motor combined on the basis of brushless motor and frequency conversion technology. The use of this motor has played a very good role in industrial production. However, as its use becomes more and more common, the problem of motor damage is becoming more and more prominent. So, how do we judge whether it is damaged? Next, let’s analyze the cause of its damage and how to judge whether it is damage.
There are many reasons for the damage of permanent magnet variable frequency motors, among which the more common ones are excessive starting torque of the motor, abnormal power supply of the frequency converter, mechanical failure, excessive temperature of the motor, etc. These reasons will cause damage to it, if we often use the motor If you find some abnormal phenomena such as abnormal noise, jitter, high temperature, etc., you must carefully analyze the cause of the motor damage.
How can we judge whether the permanent magnet variable frequency motor is damaged? Here are some judgment methods:
Method 1: Listen to the sound. If there is an abnormal sound when the motor starts, or abnormal noise occurs when it is working, it is likely that the motor is damaged. At this time, we can disassemble the motor to check whether there is any foreign matter stuck to the motor or whether the bearing is worn Wait for failure.
Method 2: Measure the temperature. If the motor generates a lot of heat during operation, even exceeding the allowable range of the motor, then it is likely that the motor is damaged. At this time, we should pay attention to check whether the heat dissipation of the motor is normal, and at the same time check the frequency converter working status.
Method 3: Check the motor current and voltage. If the current or voltage data is abnormal when the motor is working, it is likely that the motor is damaged. At this time, we need to use professional equipment such as an oscilloscope for technical analysis to find out where the fault lies.
Method 4: Check the frequency of the inverter. If the frequency of the inverter is found to be abnormal, it is likely that the motor is damaged. At this time, we should fully and carefully analyze whether the motor is stuck by foreign objects during operation, or the quality of the motor power supply and the inverter power supply, etc. Failures caused by various factors.
Through the above introduction, we can know that there are various reasons for the damage of the permanent magnet variable frequency motor. We should check and maintain the motor regularly to ensure the normal operation of the motor. When checking the damage of the motor, we should According to the actual operation of the motor, use corresponding technical means to obtain data and further determine the fault location.
