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

    two z axis motors

    Scheduled Pinned Locked Moved
    General Discussion
    8
    13
    2.1k
    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.
    • irondesk40undefined
      irondesk40
      last edited by

      just found out we will have two z axis motors. Is it pretty straight forward to set up and both motors run identical?
      Thanks

      1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators
        last edited by dc42

        Yes, there are several ways to do this:

        1. The Duets provide 2 Z motor outputs, wired in series. As shipped, there are 2 jumper sin one of the Z motor connectors, to allow you to use a single motor. You can remove those jumpers and connect one Z motor to each connector.

        This method is not recommended if your printer uses low current/high inductance motors, especially if you are using 12V power not 24V.

        1. You can connect the two motors in parallel instead. Works well on the Duet WiFi/Ethernet for the types of motors that don't work well when connected in series. Not recommended on the Duet Maestro unless the motors are very low current (e.g. up to 700mA rated current).

        2. If you will not otherwise be using the E1 extruder motor output, you can connect one Z motor to that and the other to the Z motor output. Then put command "M584 Z2:4 E3" in config.g (before any M906 or M350 commands) to configure the firmware to drive both together. If your printer has a Z probe, you can have the firmware adjust the two motors independently to do side-to-side bed levelling too.

        HTH David

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

        1 Reply Last reply Reply Quote 0
        • heathharperundefined
          heathharper
          last edited by

          dc42 - David.

          I am new to the forum, and did not see a spot where someone has asked, this may be an assumed question, but here goes.

          When you say,

          "If you will not otherwise be using the E1 extruder motor output, you can connect one Z motor to that and the other to the Z motor output. Then put command "M584 Z2:4 E3" in config.g (before any M906 or M350 commands) to configure the firmware to drive both together. If your printer has a Z probe, you can have the firmware adjust the two motors independently to do side-to-side bed levelling too."

          Does this apply only to Duet 2 WIFI and Ethernet boards, or can I use this method on the Maestro board as well?

          If so, can I use 3 channels to support 3 independent motors on Z using a Maestro board if I add the Maestro 2 driver expansion board?

          Thank you for your support and feel free to redirect me if I missed this being answered somewhere else. I look forward to spending lots of time in the community.

          Phaedruxundefined 1 Reply Last reply Reply Quote 0
          • Phaedruxundefined
            Phaedrux Moderator @heathharper
            last edited by Phaedrux

            @heathharper said in two z axis motors:

            Does this apply only to Duet 2 WIFI and Ethernet boards, or can I use this method on the Maestro board as well?
            If so, can I use 3 channels to support 3 independent motors on Z using a Maestro board if I add the Maestro 2 driver expansion board?

            Yes, you can do that with the maestro and the expansion board.

            https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

            Z-Bot CoreXY Build | Thingiverse Profile

            1 Reply Last reply Reply Quote 1
            • heathharperundefined
              heathharper
              last edited by heathharper

              Thank you @Phaedrux ! I will read up on it! I guess the reason that I wondered was that it says "Each Z motor must be driven from a separate stepper motor output on the Duet + optional DueX expansion board".

              I took that to mean literally the Duex2 or Duex5 expansions, not just the added 2 stepper expansion for the Maestro.

              If the 2 stepper Maestro expansion fits the "DueX" description, then this answers my question.

              1 Reply Last reply Reply Quote 1
              • Phaedruxundefined
                Phaedrux Moderator
                last edited by

                I've edited the documentation to include the maestro + expansion board.

                Z-Bot CoreXY Build | Thingiverse Profile

                heathharperundefined 1 Reply Last reply Reply Quote 0
                • heathharperundefined
                  heathharper @Phaedrux
                  last edited by

                  @Phaedrux Wow! Thanks! Amazing support!

                  droftartsundefined 1 Reply Last reply Reply Quote 0
                  • droftartsundefined
                    droftarts administrators @heathharper
                    last edited by

                    @heathharper Make sure you use RepRapFirmware version 2.01 or later, when support for the Maestro expansion board was added to the firmware. No reason not to use the latest 2.05.1 though! See https://forum.duet3d.com/topic/14425/extruder-motor-3-and-4-no-power-to-extrude

                    Ian

                    Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                    1 Reply Last reply Reply Quote 0
                    • mrehorstdmdundefined
                      mrehorstdmd
                      last edited by

                      It should be pointed out that the motors will "run identically" until power is cycled a few times. There will need to be some means of resynchronizing them from time to time to prevent the X axis from tilting so badly that the machine can't print.

                      https://drmrehorst.blogspot.com/

                      droftartsundefined 1 Reply Last reply Reply Quote 0
                      • droftartsundefined
                        droftarts administrators @mrehorstdmd
                        last edited by

                        @mrehorstdmd True. @heathharper see this guide: https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors

                        This recent thread also covers it: https://forum.duet3d.com/topic/14486/independted-dual-z-manual-bed-leveling-assistant-question specifically my post here: https://forum.duet3d.com/post/133994

                        Ian

                        Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                        1 Reply Last reply Reply Quote 0
                        • stefancvijundefined
                          stefancvij
                          last edited by

                          I'm going to upgrade a Cube Pro printer that has dual y-axis motors. Should i connect the 2 motors to use with 1 driver on the board, or is it better to use separate drivers? I read that the board features 2 Z motor outputs, so could i use these ports and switch z with y in the config? Appreciate any help 🙂

                          Phaedruxundefined T3P3Tonyundefined 2 Replies Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator @stefancvij
                            last edited by

                            @stefancvij said in two z axis motors:

                            I'm going to upgrade a Cube Pro printer that has dual y-axis motors. Should i connect the 2 motors to use with 1 driver on the board, or is it better to use separate drivers? I read that the board features 2 Z motor outputs, so could i use these ports and switch z with y in the config? Appreciate any help 🙂

                            Did you read any of the replies in this thread?

                            Z-Bot CoreXY Build | Thingiverse Profile

                            1 Reply Last reply Reply Quote 0
                            • T3P3Tonyundefined
                              T3P3Tony administrators @stefancvij
                              last edited by

                              @stefancvij said in two z axis motors:

                              I'm going to upgrade a Cube Pro printer that has dual y-axis motors. Should i connect the 2 motors to use with 1 driver on the board, or is it better to use separate drivers?

                              it depends. if you have spare drivers on the board you intend to use then using two allows you to individually tram the two Y axis motors

                              I read that the board features 2 Z motor outputs, so could i use these ports and switch z with y in the config?

                              yes you can change the drivers to use any axis in the config.

                              www.duet3d.com

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