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Is it risky to manually jog (e.g. using a jog knob)

Discussion in 'General Talk' started by JinShil, Dec 3, 2019.

  1. JinShil

    JinShil New

    Nov 2, 2019
    Likes Received:
    I've heard and read that manually jogging a CNC machine (e.g. with a jog knob) could potentially induce a back current into the motor controller, causing damage. Is this something to be concerned about when using the BlackBox controller and the Nema 23 motors from OpenBuilds?
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Project Maker Builder Resident Builder

    Mar 1, 2017
    Likes Received:
    Correct, you never want to use mechanical force to spin the motors as they then become generators pushing voltage back into the stepper drivers. This applies to all stepper motor systems.
    sharmstr likes this.

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