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    Z Axis 2 Parallel Motors Synchronization

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    • jaydevdaveundefined
      jaydevdave
      last edited by

      The same motors run when connected on X and Y axis respectively and that too with high speed of 100mm per second. why so?

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      • dc42undefined
        dc42 administrators
        last edited by

        @jaydevdave:

        The same motors run when connected on X and Y axis respectively and that too with high speed of 100mm per second.

        The maximum speed achievable is lower when you have two motors wired in series. But why are you trying to run your Z axis at 100mm/sec? Z doesn't need to move fast.

        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

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        • jaydevdaveundefined
          jaydevdave
          last edited by

          We having two Y motors which have been swapped with the Z axis. So Two Y motors being connected at the Z axis and we need the speed of 100mm/sec.
          Stepper motors Rating 1.5A
          Power supply 24V.
          How can it be achieved?

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          • dc42undefined
            dc42 administrators
            last edited by

            Try connecting them in parallel to just 1 of the connectors instead of in series using both connectors, and setting the current to 2A.

            EDIT: alternatively, if you have any spare motor driver outputs left, connect them to separate outputs, use M584 to tell the firmware to drive both together, and use the existing current setting.

            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

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            • jaydevdaveundefined
              jaydevdave
              last edited by

              Driving both the motors from a single connection(parallel) instead of two is safe? I hope it won't burn out the driver right?

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              • jaydevdaveundefined
                jaydevdave
                last edited by

                We having two Y motors which have been swapped with the Z axis. So Two Y motors being connected at the Z axis and we need the speed of 100mm/sec.
                Tried what dc42 mentioned in the previous comments. We do not have extra driver nor it is working in parallel connection.
                Should we increase the power supply or should I use 3A rated stepper motors?

                Current motor having rating of 1.5A
                Torque 5.5kg/cm2
                Power supply 24V.

                How to do it?

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                • dc42undefined
                  dc42 administrators
                  last edited by

                  Like I said, connect them in parallel to a single stepper motor output, and try 2A current. The drivers are current-limited so it is safe.

                  What is the steps/mm for that axis?

                  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

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                  • jaydevdaveundefined
                    jaydevdave
                    last edited by

                    Alright

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                    • jaydevdaveundefined
                      jaydevdave
                      last edited by

                      Can we set motor current to 3A in config ?

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                      • elmoretundefined
                        elmoret
                        last edited by

                        @jaydevdave:

                        Can we set motor current to 3A in config ?

                        Have you read the documentation?

                        https://www.duet3d.com/wiki/Choosing_stepper_motors

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