Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Multiple Z motor wiring

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
    2
    6
    570
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • hussainsail2002undefined
      hussainsail2002
      last edited by

      Hi,

      I have been planning to build a large 500X500 machine.

      For the Z axis I am planning to use 4 nema 17 stepper motors to lift the X Y gantry and keep the Build platform stationary.

      Is it a good idea to connect all 4 motors to a single driver by connecting in series

      or is it better to use 4 different drivers. ?

      The main issue I foresee is that the Z axis lead screws can go out of sync and bind.
      I do not want to add belts and pulleys for the Z unless its necessary, also the load I will be carrying is under 4 Kgs

      Any suggestions would be helpful.

      Thanks
      Hussain

      1 Reply Last reply Reply Quote 0
      • Vetiundefined
        Veti
        last edited by

        use 4 different driver and use
        https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

        1 Reply Last reply Reply Quote 0
        • Vetiundefined
          Veti
          last edited by

          also the ideal size is 3 motors.
          see
          https://drmrehorst.blogspot.com/2017/07/3-point-print-bed-leveling-vs-4-point.html

          1 Reply Last reply Reply Quote 0
          • hussainsail2002undefined
            hussainsail2002
            last edited by

            Hi ,

            Thanks for your reply.

            Do you think there is any chance for the drivers to go out of sync and cause a binding issue.

            I am assuming that this is the main reason why people use a belt and pulley to run multiple lead screws.

            1 Reply Last reply Reply Quote 0
            • Vetiundefined
              Veti
              last edited by

              that depends on the lead screws and nuts used.

              the normal 8mm lead screws and nuts have quite some play on them.
              given that the steppers can go 2 full steps out of sync

              1.8 motor 200 steps per rev.
              1/100 rev out of sync.
              assuming one goes up one down
              2/100 revs out of sync.

              normal lead scews 8mm per rev
              8mm*2/100=0.16mm out of sync

              which should be fine for normal lead screws.

              hussainsail2002undefined 1 Reply Last reply Reply Quote 0
              • hussainsail2002undefined
                hussainsail2002 @Veti
                last edited by

                @veti

                Thanks A lot will try with different drivers first and let you know how it goes.

                1 Reply Last reply Reply Quote 0
                • First post
                  Last post
                Unless otherwise noted, all forum content is licensed under CC-BY-SA