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Step motor on X axis cant decide which direction it wants to go

Discussion in 'OpenBuilds Forum Help' started by S69mouse, May 22, 2021.

  1. S69mouse

    S69mouse New
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    During a carve last week my x axis went rogue. Testing it, i found when hitting left it will go one direction, hit left again and it goes the opposite. I have reattached the wires to check to loose connections . Not sure if motor went bad or ?
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  3. S69mouse

    S69mouse New
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    To be clear i have been using this for 3 weeks with 0 issues. Not sure why it would randomly not be able to go the direction i am pressing. I am going to test the coils with a multi meter. Maybe a wire broke?
     
  4. S69mouse

    S69mouse New
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    Test 1 i get no reading. Test 2 i get a 2 some time 3 others. Test 3 i get a 1 and sometimes a 2
     
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Wires broken off inside insulation from a spot with a bit of a lack of strain relief?
    Terminal that looks good, but has the wire under, instead of inside, the cage.

    Its never the motor. Usually an assembly related mistake, sometimes a broken wire in an extension
     
  6. S69mouse

    S69mouse New
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    Where is the most likely location and why would this happen in less than a month where i have static wires?
     
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    As mentioned above:
     
  8. S69mouse

    S69mouse New
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    Right but with it being static, nothing pulling on it and it was working fine, what would cause this?
     
  9. Christian James

    Christian James Journeyman
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    What set up do you have?
     
  10. S69mouse

    S69mouse New
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    1515 lead screw build
     
  11. Giarc

    Giarc OpenBuilds Team
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    You may have just been lucky. I had a similar issue where I inserted the wire too far and the screw was on the insulation. It worked great until it didn't.
     
  12. S69mouse

    S69mouse New
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    I will check that. Thanks
     
  13. S69mouse

    S69mouse New
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    It appears no sheathing is in the way at the motor. Have not checked the blackbox side
     
  14. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    And after that, multimeter the wires in between too. Could have in invisible break, inside the insulation of one of the 4 wires
     
  15. S69mouse

    S69mouse New
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    Still having trouble understanding why the wires that are not moving would break? Where do the invisible breaks normally happen, close to the connectors?
     
  16. Gary Caruso

    Gary Caruso OpenBuilds Volunteer
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    If you didn't check the connections at the BB yet do that, those connectors can work loose easy. Check / pull every wire connection, tighten every screw.
    Cheers
    Gary
     
  17. S69mouse

    S69mouse New
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    Adjusted and checked wires for x at the black box. Same issue of pressing a direction and it going back and forth. Where would an invisible break normally happen on these and why so soon?
     
  18. S69mouse

    S69mouse New
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    No continuity reading on the blue wire for the x axis. All other wires give a reading.
     
  19. S69mouse

    S69mouse New
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    I have pulled back some on the blue. Still no reading. Should I replace that whole run?
     
  20. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Something tucked, something bent too a too small radius, or could even have a bad spot from the factory. Stop overthinking it. Measure out the wires with a multimeter. It should take you 10 min :) not three days. If you think its a fault from the factory, speak to http://support.openbuilds.com/support/home
     
    S69mouse likes this.
  21. S69mouse

    S69mouse New
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    Thank you for assisting me with this. Working with a temp cable while i wait on a replacement
     
    Peter Van Der Walt likes this.

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