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Solved Z axis only moves up won't move down

Discussion in 'Troubleshooting' started by Matt Gorski, Jan 28, 2017.

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  1. Matt Gorski

    Matt Gorski Member

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    Okay so I have gone through all the threads discussing this issue and I cant figure out the issue. I moved my z axis up too far and now I had to manually move it down by spinning the roda and it will not zero to home anymore and it only moves up not down. What could cause this? My z axis reports negative numbers and won't respond to the move down command. Please help.
     
    #1 Matt Gorski, Jan 28, 2017
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    #2 mark tomlinson, Jan 28, 2017
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If the switches say the Z is home then it will never go more "home" or down any further... HOME is the bed (or supposed to be)
     
    #3 mark tomlinson, Jan 28, 2017
  4. Matt Gorski

    Matt Gorski Member

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    I read through all of those posts. Tried reflashing firmware and re-aligned the switches. See pic. Still won't move down so I assume it a bad switch. Gonna test voltage next. Thanks for the help guys.
     

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    #4 Matt Gorski, Jan 28, 2017
  5. Matt Gorski

    Matt Gorski Member

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    From the video it looks to be improper positioning.
     
    #5 Matt Gorski, Jan 28, 2017
  6. Matt Gorski

    Matt Gorski Member

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    I think I fixed it! Running a calibration circle quick but it was the positioning. I had to push the rod a bit and it came down on the switch :)
     
    #6 Matt Gorski, Jan 28, 2017
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  7. Matt Gorski

    Matt Gorski Member

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    Fixed :)
     
    #7 Matt Gorski, Jan 28, 2017
  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, that symptom always means a bad switch.
    Usually it just gets accidentally knocked out of position and it is a simple fix.
    Worst case a wire is bad or the switch itself, but you always know it is switch related.
     
    #8 mark tomlinson, Jan 29, 2017
  9. Morichalion

    Morichalion Member

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    I had a pretty chronic problem with the z-axis getting knocked around consistently, along with the brackets they sit on.

    I have a couple of zip ties around them now, they move far less than they used to, and it solved much of an adhesion issue I was experiencing, as well.
     
    #9 Morichalion, Jan 29, 2017
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