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Servo positioning interference problem

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2023-03-13

Mitsubishi JE servo pulse control. The program logic has been verified to be correct. Now the position of the equipment is not allowed to exceed the range after about ten minutes of operation. The monitoring Mitsubishi motor command pulse accumulation has drifted up. Later, the filter has been added to improve it. After grounding 0V, the single servo operates normally. I thought it was OK. Later, when the two servos operate simultaneously, there was interference on the right. Now I don't know how to deal with the interference. (There are 5 small frequency converters in the equipment)
C

    • jessie

      2023-03-14
      If the PLC is old, it is estimated that the pulse generation is incomplete. The problem has just been solved a while ago. Like you, it is also a Mitsubishi servo, and there are two sets of pulse generation at the same time! Neither grounded nor ungrounded! Add a filter, add a magnetic ring, change the driver, and change the servo motor line. It's really no use later. It's OK to replace a new PLC! It is suspected that after switching power supply 0V is grounded, other equipment is also grounded, which interferes with PLC pulse.
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