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Y-Axis Reversed

Discussion in 'Troubleshooting' started by William, Aug 12, 2014.

  1. William

    William New Member

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    When I manually move the y-axis positive it moves toward me and vice versa. The wires are plugged in correctly as much as I can tell, with colors in the same sequence as the other motors. Any thoughts? Thansk.
     
  2. Peter Krska

    Peter Krska Active Member

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    When I look at the front of my Robo3D printer seeing their logo in the front, when I home my bed, using the ALL button in Matter Control, the bed moves towards the back centre if it already forward.

    Not sure if that's what your looking for. Are you able to print a test cube?
     
  3. William

    William New Member

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    Peter, I'm with you on that. I just upgraded to the new y-axis rail system, but I've been away from the printer for a few months also. I've always known home to be where the bed moves back (away) and the extruder moves left. But something weird is going on. If I hit Y-home the bed moves toward me and since it doesn't know when to stop, it keeps grinding until I kill it. Originally I thought it was the limit switch, but that's working.
     
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That almost sounds like the Y axis motor is connected backwards.

    (although I think I would still expect the limit switch to activate, but I have not checked that part of the firmware).
     
  5. Paul Yeh

    Paul Yeh Active Member

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    If Y axis moves opposite direction from what it's supposed to be, then your Y axis stepper motor's cable connector to the RAMPS board is reversed.

    Unplug the Y axis connector from the board, flip it 180 degree around and then plug it in. Check your Y axis movement to see if it fixed the problem.
     
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  6. Paul Yeh

    Paul Yeh Active Member

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    Ah, Mark already answered it. :)
     
  7. Paul Yeh

    Paul Yeh Active Member

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    When you flip the connector, it should solve the limit switch issue.

    The limit switch is acting weird now because the reverse connection fools the software with max from min.
     
  8. William

    William New Member

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    Thanks! That was it!! I figured it was reversed, but I didn't know you could flip the thing around. I thought it could damage it or something. So, it was wired wrong and then put in backwards to fix it. When I took things apart I didn't notice the inconsistency in the color of wires. Thanks everyone!!
     
  9. charles irven

    charles irven New Member

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    Thank you I had the same problem and reversing the connector fix it :)
     

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