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    add two nema 23 in series

    Duet Hardware and wiring
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    • Pablo
      Pablo last edited by

      Can I add two nema 23 in series in Z axis and in Y axis.
      2.2A and 2.6 ohms each motor . thanks

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      • mgrimes1907
        mgrimes1907 last edited by

        You could use an extra driver to make a second Zaxis. I have 4 on mine.

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        • Danal
          Danal last edited by Danal

          Series takes same current, but cuts torque at each motor in half. (EDIT: Torque is same at low speeds; the downside is the speed at which torque begins to fall off is halved)

          Parallel draws double current (quite often beyond capacity of a single driver).

          Best way on Duet is almost always to use one driver per motor, and configure to make them work together.

          Delta / Kossel printer fanatic

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          • dc42
            dc42 administrators @Danal last edited by

            @danal said in add two nema 23 in series:

            Series takes same current, but cuts torque at each motor in half.

            Parallel draws double current (quite often beyond capacity of a single driver).

            Best way on Duet is almost always to use one driver per motor, and configure to make them work together.

            No, series gives you the same torque at low speeds - unless the motors have unusually high resistance - but the maximum speed you can run the motors at before the torque starts to drop is halved. There is a calculator at reprapfirmware.org to work this out.

            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

            Danal 1 Reply Last reply Reply Quote 0
            • Danal
              Danal @dc42 last edited by

              @dc42 said in add two nema 23 in series:

              @danal said in add two nema 23 in series:

              Series takes same current, but cuts torque at each motor in half.

              Parallel draws double current (quite often beyond capacity of a single driver).

              Best way on Duet is almost always to use one driver per motor, and configure to make them work together.

              No, series gives you the same torque at low speeds - unless the motors have unusually high resistance - but the maximum speed you can run the motors at before the torque starts to drop is halved. There is a calculator at reprapfirmware.org to work this out.

              Aha! Thank you... I almost didn't post that, something didn't quite feel right.

              Excellent clarification.

              Delta / Kossel printer fanatic

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