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Stepper motor stall warning? Also EMC issues.

Discussion in 'Miscellaneous' started by Wesley, Mar 8, 2025 at 07:41.

  1. Wesley

    Wesley New Member

    Joined:
    Mar 5, 2025
    Messages:
    2
    Balance:
    22Coins
    Ratings:
    +0 / 0 / -0
    My Motion Simulator:
    AC motor
    I've heard some complaints about stepper motors skipping steps... is there something like a stepper sensor that can be put on the motor to confirm that it is actually responding to the steps applied? The ultimate goal is to give a warning if the motor fails to turn a specified amount, and then the user can decide whether to continue or reset everything.

    I'm thinking of buying a small CNC machine, and I'm leaning towards machines that can use EMC. Not sure which machines (Tormach 1100 or smaller) can handle this, it seems like many of them are captive to some proprietary software. Are there any downsides to using EMC?
    Wesley, Mar 8, 2025 at 07:41
    #1
  2. Aerosmith

    Aerosmith Active Member

    Joined:
    May 30, 2024
    Messages:
    380
    Occupation:
    self employed
    Location:
    Germany
    Balance:
    2,223Coins
    Ratings:
    +225 / 0 / -0
    My Motion Simulator:
    3DOF, AC motor
    Programmers rule: Don't test for an error condition you cannot handle. If your stepper motors loose steps your workpiece is already ruined. If your motors are too weak rather invest money into bigger motors and drives instead of sensors that detect that error condition. And if you have to buy new motors consider closed loop systems that handle everything automatically.
    Aerosmith, Mar 8, 2025 at 10:57
    #2