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    Duex : inverted Fan Output Pins

    Duet Hardware and wiring
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    • Xandy01
      Xandy01 last edited by

      Re: Duex 2: Zero-Power to Fan Outputs.

      I notice that the V_Fan Pin on the Duet WiFi and the Duex are inverted.
      If you change a Fan from the Duet WiFi to the Duex you need to change the Pins from the Fan.

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      • dc42
        dc42 administrators last edited by

        If you use the Molex connectors that we supply with the Duet and the DueX5, the keying tab on the connector ensures that you can plug the same fan into the Duet or into the DueX5 without changing the connections - assuming of course that the connectors have been fitted the right way round.

        With the expansion connector at the top in both cases, on the Duet the keying tab should be at the bottom of the fan connector. V_FAN is the left pin and FAN- is the right pin. On the DueX5 the keying tab should be at the top of the fan connector. V_FAN is the right pin and FAN- is the left pin. The keying tab forces you to rotate the connector at the end of the fan wire by 180 degrees when moving it between the Duet and the DueX5.

        If you use un-keyed Dupont-style connectors instead, then of course it is very easy to plug the connector in the wrong way round.

        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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        • Xandy01
          Xandy01 last edited by

          @dc42 said in Duex : inverted Fan Output Pins:

          keying tab on the connector

          I have a Sceenshot attached with the positions of the keying tab(nose for Molex) and the V_Fan Pin and they are flipped.0_1528657946617_Duet-Duex_FanPins.png

          dc42 1 Reply Last reply Reply Quote 0
          • dc42
            dc42 administrators @Xandy01 last edited by dc42

            @xandy01 said in Duex : inverted Fan Output Pins:

            I have a Sceenshot attached with the positions of the keying tab(nose for Molex) and the V_Fan Pin and they are flipped.!

            The keying tab on the connectors in that top diagram of the DueX fan connectors should be at the top, not the bottom. Have you received a DueX board with the keying tabs at the bottom? if so, please provide a photo and tell us where you purchased the DueX.

            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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            • Xandy01
              Xandy01 last edited by

              I used the Picture from https://duet3d.dozuki.com/Wiki/Duex2_and_Duex5_Features#Section_Jumpers and there is the wrong keying tab shown. sorry I was comparing the picture with the drawing thats it I thing then the picture wrong.

              dc42 1 Reply Last reply Reply Quote 0
              • dc42
                dc42 administrators @Xandy01 last edited by

                @xandy01 said in Duex : inverted Fan Output Pins:

                I used the Picture from https://duet3d.dozuki.com/Wiki/Duex2_and_Duex5_Features#Section_Jumpers and there is the wrong keying tab shown. sorry I was comparing the picture with the drawing thats it I thing then the picture wrong.

                Thanks, you are right - the picture at the top of the page is wrong. It was probably a prototype.

                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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                • T3P3Tony
                  T3P3Tony administrators last edited by

                  I have updated the image with one of a production Duex5

                  www.duet3d.com

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