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unpredictable z axis

Discussion in 'Controller Boards' started by Weewilly3, Mar 26, 2020.

  1. Weewilly3

    Weewilly3 New
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    Updated to Blackbox after old my computer died. X and Y axis work fine but when I try to jog the Z axis either in the control software or with the keyboard (Page Up/Dn) the Z axis sometimes moves the correct direction and sometimes moves the opposite direction. I can press the "Page Up" key and the Z axis will move up once or twice then the next time it will move down, if I keep pushing "Page Up" it will reverse direction - I never know which way it will move. Any clue?
     
  2. Alex Chambers

    Alex Chambers Master
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    Yes - double check your wiring - you are looking for one wire which is only making an intermittent connection.
    Alex.
     
    Peter Van Der Walt likes this.
  3. Peter Van Der Walt

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

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    Agreed, either only 3 of the 4 wires are making contact, or the coil pairs are incorrectly identified. If motors did not come from us (or not recently) color code may differ from documentation
     
  4. Alex Chambers

    Alex Chambers Master
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  5. Weewilly3

    Weewilly3 New
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  6. Weewilly3

    Weewilly3 New
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    loose wire was correct.
    Thanks again.
     

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