What should I do if the stepper motor does not turn?

Because the open-loop control system has the advantages of simple operation and low price, the basic method adopted in China is to control the reactive stepper motor in an open-loop manner. The following editor will teach you how to solve the problem that the stepper motor does not rotate.

Line problems in old equipment are generally reflected in the equipment. Because line problems are easy to ignore, signal and motor lines are possible, we can first eliminate them.

1. Both stepper motors do not rotate. Consider the power wiring. By controlling the signal input circuit, the problem on the motor circuit can be basically eliminated. (If one thing can be done, even better).

2. The power supply problem is also relatively simple, disconnect the power supply V+, V- of a group of drives, the power supply is insufficient, and one is basically no problem. Common power aging.

3. The wiring problem is more complicated. And intuitively, whether there was an occasional failure before the problem occurred. That's the machine running. If anything, it's 100% sure to be the problem.

4. The signal problem is more complicated, but the probability that double pulse does not exist is low. If one pulse controls two drivers at a time, this kind of problem is more common (however, few people use it).

5. The problem of emergency stop switch. If the emergency stop switch is broken, the motor will not move.

The above is an introduction to solving the problem that the stepper motor does not rotate. Although the stepper motor is widely used, it cannot be used under normal conditions like a general AC (DC) motor, and the speed from the start to the end is theoretically speaking. , When the limit starting frequency of the motor is greater than the running speed, the motor can run normally and can reach the expected running speed.