1. Got a question or need help troubleshooting? Post to the troubleshooting forum or Search the forums!

Unanswered X axis not homing properly

Discussion in 'Troubleshooting' started by Terrell Grant, Mar 21, 2016.

Page 1 of 2
  1. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    Has this ever happened to anyone at the start of their print? Also my x axis doesnt home. It manually moves, but when I try to gome it just moves a little to the right.
     
    #1 Terrell Grant, Mar 21, 2016
  2. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    I forgot to upload this video with the original post. I had a hard time uploading so I added this link.
     
    #2 Terrell Grant, Mar 22, 2016
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Check the X home microswitch. It could be that a wire is getting in the way and triggering it prematurely. Just make sure that:
    1) it is clear of obstructions and moving the carriage manually easily and cleanly makes the switch work.
    2) none of the wires are loose/diconnected on the switch.
     
    #3 mark tomlinson, Mar 22, 2016
    Kevin Robo 3D likes this.
  4. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    I have done that. It doesn't mess up like this all the time. Once every three prints or so.
     
    #4 Terrell Grant, Mar 22, 2016
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Then it is a loose switch connection most likely (trace the wire back to the RAMPS and make sure it is all landed solid)..
     
    #5 mark tomlinson, Mar 22, 2016
  6. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    I have unplugged it, and plugged it back in again. X is plugged in firmly.
     

    Attached Files:

    #6 Terrell Grant, Mar 22, 2016
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    And the connections to the switch are solid?
     
    #7 mark tomlinson, Mar 22, 2016
  8. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    Yes, but it doesnt always home to the switch.Even if I push the dog switch in for it to stop, i can still move it in mattercontrol.
     
    #8 Terrell Grant, Mar 22, 2016
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    The switch will not stop manual movement (i.e. telling the software to move it further). You can drive them to the ends all day long :) The switches control automatic movement when it is told to HOME.

    If you can read the switch with a multimeter (no power on, just read resistance and look for it to open and close correctly when the button is pushed).
     
    #9 mark tomlinson, Mar 22, 2016
  10. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    Switch is connected firmly. Is there any way to test the connection to my switch to make sure its working? Could this be my problem?
     

    Attached Files:

    #10 Terrell Grant, Mar 22, 2016
  11. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    Remember, it doesnt do it all the time.
     
    #11 Terrell Grant, Mar 22, 2016
  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Looks fine. Like I said with the power off take a meter to it and read resistance across where those wires attach to the switch and manually press and release the switch. You should see it toggle between high and low resistance.
     
    #12 mark tomlinson, Mar 22, 2016
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Joined:
    Feb 21, 2013
    Messages:
    23,915
    Likes Received:
    7,338
    Yes, I got that :)
    The switch might be defective and triggering a 'home' just from vibration or other movement. That would stop the X travel before it reached the switch.
     
    #13 mark tomlinson, Mar 22, 2016
  14. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    I metered the switch and when I put the terminals on the switch it reads that it is on all the time, and when the switch is pressed it turns off. Should it be like this, or should be off all the time, and only be on when pressed?
     
    #14 Terrell Grant, Mar 22, 2016
  15. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    I tried to move the plug to the other terminals on the switch. Still didn't work.
     
    #15 Terrell Grant, Mar 22, 2016
  16. Geof

    Geof Volunteer Moderator
    Staff Member

    Joined:
    Nov 9, 2015
    Messages:
    6,757
    Likes Received:
    2,339
    they are wired nc (normally closed) so yes it's on all the time until the switch is depressed. When pressed does it show open on the meter?
     
    #16 Geof, Mar 22, 2016
  17. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    When the switch is pressed it shows that the switch is closed. When not press it show open
     
    #17 Terrell Grant, Mar 22, 2016
  18. Geof

    Geof Volunteer Moderator
    Staff Member

    Joined:
    Nov 9, 2015
    Messages:
    6,757
    Likes Received:
    2,339
    That sounds wrong
     
    #18 Geof, Mar 22, 2016
  19. Geof

    Geof Volunteer Moderator
    Staff Member

    Joined:
    Nov 9, 2015
    Messages:
    6,757
    Likes Received:
    2,339
    Mine (and spares ) show closed without being depressed and open when engaged
     
    #19 Geof, Mar 22, 2016
  20. Terrell Grant

    Terrell Grant New Member

    Joined:
    Nov 29, 2015
    Messages:
    20
    Likes Received:
    0
    When I try to home the X axis it moves the X about 10mm in the wrong direction. Again this doesn't happen every time. However I'm not sure how to make it not do it.
     
    #20 Terrell Grant, Mar 22, 2016
Page 1 of 2

Share This Page