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Solved Z-axis end stop not registering?

Discussion in 'Troubleshooting' started by Chris Sweeney, Sep 14, 2016.

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  1. Chris Sweeney

    Chris Sweeney Member

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    So I recently replaced my heater core on my R1and it works fine now, but I ended up having to unplug a few wires in the process. I followed every picture and forum on re-plugging in all the wires and now the z-axis wont stop going down when I start the auto-leveling. I am assuming the z-axis end stop is either not plugged in correctly (which i have checked multiple times) or the switch itself is no longer working. I am unable to provide pictures unfortunately.
     
    #1 Chris Sweeney, Sep 14, 2016
  2. Geof

    Geof Volunteer Moderator
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    Hi Chris. No pictures means I'm going to do a wild guess. On you z switch if stock the middle will have no wire on it.m is this true in your case ?
     
    #2 Geof, Sep 14, 2016
  3. Chris Sweeney

    Chris Sweeney Member

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    The middle pins have no wire. All the end stops are plugged in the correct areas. X and Y limit switches seem to be working fine
     
    #3 Chris Sweeney, Sep 14, 2016
  4. Geof

    Geof Volunteer Moderator
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    Check the connection on the ramps board
     
    #4 Geof, Sep 14, 2016
  5. danzca6

    danzca6 Well-Known Member

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    Use the M119 command from a terminal window. Send it as the x sits and again with you lifting one side of the x up. Anything? Did you check the RAMPs to make sure it's all plugged in as it should? Can't see why the z would get unhooked with a heater cartridge replacement.
     
    #5 danzca6, Sep 14, 2016
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  6. Chris Sweeney

    Chris Sweeney Member

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    X and Y are triggered and Z registered OPEN both times
     
    #6 Chris Sweeney, Sep 14, 2016
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You have at least one Z switch that is stuck open or at least thinks it is :)

    (could be a loose wire)
     
    #7 mark tomlinson, Sep 14, 2016
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  8. danzca6

    danzca6 Well-Known Member

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    Pics of wiring please
     
    #8 danzca6, Sep 14, 2016
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  9. Chris Sweeney

    Chris Sweeney Member

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    20160914_190659.jpg 20160914_190757.jpg 20160914_190913.jpg 20160914_190918.jpg Checked all connections, everything seemed secure. Pictures are best I can do.
     
    #9 Chris Sweeney, Sep 14, 2016
  10. danzca6

    danzca6 Well-Known Member

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    Not sure why, but I can't seem to see a wires on the right endstop.
     
    #10 danzca6, Sep 14, 2016
  11. danzca6

    danzca6 Well-Known Member

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    Both of my endstops for Z have the red wire on the left and the black on the right
     
    #11 danzca6, Sep 14, 2016
  12. Chris Sweeney

    Chris Sweeney Member

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    Both of my red wires are inside and black on the outside because one of the switches is reversed
     
    #12 Chris Sweeney, Sep 14, 2016
  13. danzca6

    danzca6 Well-Known Member

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    So I wonder I it is just a bad switch, but that is interesting timing that either or both would go bad during a heat cartridge replacement. They are cheap on Amazon if you wanted to splurge and by some new ones to check out. If the wiring is good, not sure what else it would be at the moment. Can you hear them clicking when you lift off and on?

    https://amzn.com/B00E0JOP76
     
    #13 danzca6, Sep 15, 2016
  14. Chris Sweeney

    Chris Sweeney Member

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    Yes they are both clicking.
     
    #14 Chris Sweeney, Sep 15, 2016
  15. Chris Sweeney

    Chris Sweeney Member

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    The switches are good. I don't know if switching the boards messed with the firmware or messed up a pin, but it the z-axis is still not stopping on the way down when the switches are released.
     
    #15 Chris Sweeney, Sep 21, 2016
  16. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Sanity check where the Z home lands on the RAMPS.
    Make sure it is still correctly on there.
     
    #16 mark tomlinson, Sep 22, 2016
  17. Geof

    Geof Volunteer Moderator
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    The picture of where they are on the ramps board is hard to see(so it may be that) but are you certain they are connected correctly? Looks like i see a 2nd row of pins ?
     
    #17 Geof, Sep 22, 2016
  18. Geof

    Geof Volunteer Moderator
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    15470352354_3baf2e7bba_o.jpg

    You will have a full set of pins open that arnt shown for endstops but the pohoto will show you where the switches connect and on what pins
     
    #18 Geof, Sep 22, 2016
    Last edited: Sep 22, 2016
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, the row of headers where the endstops connect is 3 pins wide. +, -, signal..
    Jumpering the wrong way is bad :) (yea, I got careless and jumpered it so the switch shorted + to - once)
     
    #19 mark tomlinson, Sep 22, 2016
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  20. Chris Sweeney

    Chris Sweeney Member

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    I cannot provide better pictures, but currently, i have the pins in this position:
    O
    O X O Y O Z O (S)
    O X O Y O Z O (-)
    O O O O O O O (+)

    Currently, if i move the end stops, the printer has connection issues. And, the X and Y seem to work when i use the G28 command.
     
    #20 Chris Sweeney, Sep 22, 2016
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