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Solved Z-Axis is out of wack

Discussion in 'Troubleshooting' started by Cbrown, Jun 6, 2016.

  1. Cbrown

    Cbrown Member

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    Some how between prints my Z-Axis on my Robo3d R1+ has gotten completely out of wack. I am using Simplify3d and am running an LCD Controller. The LCD allows me to move the axis' back-and-forth, up-and-down. When the printer ran the pre-print calibration the x and y axis worked but the z continually moved up until it started missing steps and I had t shut it down. When I try to control the Z-Axis on the LCD it moves up but thinks its hitting the z-switch and will not move down.


    Can someone help?
     
    #1 Cbrown, Jun 6, 2016
    Last edited: Jun 6, 2016
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Then one of the Z home switches is out of whack, mispositioned
     
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  3. Cbrown

    Cbrown Member

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    I have checked all of the switches and nothing has been disconnected
     
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Are the two switches positioned exactly the same on the crossbar where they meet the rail?
     
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  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If it thinks a Z switch is made that can only be the switch itself open or the wires to the switch open.
    Closed is normal, open circuit is "At Home"/engaged/triggered.
     
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  6. Cbrown

    Cbrown Member

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    Yes. The switches are exactly as they have been sense day 1. I checked
     
  7. David Lockwood

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    I'm having a similar problem. The same cause. The switch assembly on the right hand side (the one with the usb connector) is riding high. The brass nut on the screw drive seems to have been pulled from the black plastic limit switch assembly. There is a recess that I assume the nut is supposed to drop into. Darned if I can get it to cooperate. The switch assembly has a plastic detent clip to hold it in place but I cannot get it over the edge of the block riding on the screw drive. Any thoughts. Now, be kind.
     
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  8. Cbrown

    Cbrown Member

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    There are 3 switches total. I have tripled checked the switches.
     
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    There are two Z switches. They normally need to be snug against the bottom of the crossbar with the little button pressed. If they both are then a wire is broken or disconnected from the ramps or the ramps is bad. That is all that it can be since an open switch is what triggers Z home.

    Sent from my Xtreme Play Tab v2 using Tapatalk
     
    #9 mark tomlinson, Jun 6, 2016
    Last edited: Jun 6, 2016
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  10. Geof

    Geof Volunteer Moderator
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    @Cbrown maybe share a good photo of each switch. A 2nd set of eyes might see something.
     
  11. Cbrown

    Cbrown Member

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    Here are the switches
     

    Attached Files:

  12. Geof

    Geof Volunteer Moderator
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    Your z switch is out of whack. 2nd picture. It should look like the first picture
     
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  13. Cbrown

    Cbrown Member

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    They are both on the outer prongs. All three are on the outer prongs
     
  14. Geof

    Geof Volunteer Moderator
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    Not the wiring the physical position of the switch should be against the x axis.
     
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  15. Cbrown

    Cbrown Member

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    Absolutely right!
     
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