Stepping motor out-of-step detection method - Database & Sql Blog Articles

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If you confirm that your machine's stepper motor is out of step, you can test it as follows.

Explain the word out of step first. The general motor is three-phase six-shot, five-phase ten-shot. Have you noticed that the three-phase six-shot controller has three LEDs, and the five-phase ten-shot has five LEDs.

Three-phase: three sets of windings of the motor, that is, three lines. Six beats: Three LEDs, cycled twice to return to the starting state. Each of the three LED lights of the three phases flashes one step, and the stepping motor is stepped by 0.1 wire. The rotation is two turns of 0.6 wire.

Generally, the motor is out of step, and one or two phases are missing, that is to say, one of the lines is broken (as for the motor or the controller, it is necessary to check). At this time, we can let the motor perform step by step, that is, each step advances by 0.1 wire. Every step we take the hand to shake the motor to see if it is locked. If the LED is on, the motor is not In the locked state, there is a problem with which line, you can check the connection with this line.

Start with the machine:

Turn off all power, disassemble the interface that the machine is connected to the controller, find out the three lines, and find out which 24V power line. Turn the multimeter to the electrical block and put the three with the 24V line. Under normal conditions, there should be a resistance of about 8.5 ohms, and some motor resistors have a size. In any case, if the resistance is wrong with the other ones, there may be a problem with that line.

If the results of the motor test are correct, you should use the same method to detect the controller.

If the result of the test is a problem with the motor, follow the line you detected to detect the motor. If you are lucky, if the line is broken, you can pick it up. If you are unlucky, you have to change the motor.

If it is a controller problem, you can always go up along the detected line. You can know.