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Stepper motor manufacturers teach you how to determine if the stepper motor is broken


Stepping motors use electronic circuits to convert DC power into time-sharing power supplies. Multi-phase sequential control currents are used to power stepping motors so that stepping motors can work normally. Usually, the stepper motor does not work properly. What method can be used to determine whether the stepper motor is broken? Today, stepper motor manufacturer Bangtuo Transportation Control engineers will share two practical methods with you, which can be fast and easy. To judge.

If the stepper motor does not work properly, there are two ways for the stepper motor manufacturer Bangtuo to determine whether it is broken:

First, without connecting any equipment and wires, separate each wire of the stepping motor, do not touch the wires, and rotate the shaft by hand. Good motors should only require a certain amount of force to smoothly rotate. There is no card in the middle. If a card is stuck in the middle or cannot be turned at all, it indicates that the motor is broken, the bearing may be displaced, and the internal rotor and stator are worn. The cause of damage should be caused by excessive external force. You can use a multimeter to measure the impedance of the "adjacent" two phases, which should be equal to the coil impedance given by the product.

If the upper equipment detects idling, it should be able to reach the specified speed, and at normal speed, the noise emitted should be stable. In addition, a load test is required. Specific test parameters need to combine load torque and motor torque. Twist the wires together. The larger the motor, the greater the force required to turn it. The ordinary stepper motor cannot be turned by human force at all. (The more wires are twisted together, the more force is required.) If it is invalid, the coil is broken.

Testing on the equipment, when idling, it should be able to reach the specified speed, and at normal speed, the noise emitted should be stable. In addition, a load test is required. Specific test parameters need to combine load torque and motor torque.

Second, the wires are screwed together. The larger the motor, the greater the force required to turn it. The ordinary stepper motor cannot be turned by human force at all. (The more wires are twisted together, the more force is required.) If it is invalid, the coil is broken.

For synchronous motors, in addition to the above methods, it is necessary to carefully observe the rotor, which cannot be ignored. If there is a gap in the rotor, it is good and small, the nails cannot be embedded, and the dynamic performance is at least 20% off. At this time, it is very easy to lose steps. It is recommended to replace it. The fatal weakness of the servo motor is that it cannot be mounted It is easy to shake the encoder inside by hitting it. The probability of the servo motor's power coils burning out is quite low, and encoder and joint damage are common, while servo failures are also common.
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