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    Part cooling fan and extruder fan are constantly on

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    Duet Hardware and wiring
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    • AlecSanchezundefined
      AlecSanchez
      last edited by AlecSanchez

      I am trying to set up my part cooling fan and extruder fan, but it appears that out4/5/6 on my board are constantly on. It is a Duet 3 MB 6HC, and the jumper for out4/5/6 is jumped for 12v. The fans I am trying to run are also 12v. M106 is giving me no control over them also. Any help would be greatly appeciated! attached is my config.g file also
      config.g

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by

        The config looks ok

        ; Fans
        M950 F0 C"out5" Q500                      ; create fan 0 on pin out5 and set its frequency
        M106 P0 S0 H-1                               ; set fan 0 value. Thermostatic control is turned off
        M950 F1 C"out6" Q500                        ; create fan 1 on pin out6 and set its frequency
        M106 P1 S0 H-1                           ; set fan 1 value. Thermostatic control is turned off
        
        ; Tools
        M563 P0 D0 H1 F0                             ; define tool 0
        

        Have you tried setting up with one of the other outputs?

        Photo of the wiring?

        It's possible the mosfets are damaged and failed fused in the on position.

        Z-Bot CoreXY Build | Thingiverse Profile

        AlecSanchezundefined 1 Reply Last reply Reply Quote 0
        • AlecSanchezundefined
          AlecSanchez @Phaedrux
          last edited by

          @phaedrux Thank you for the reply. I have tried all of the outputs 4/5/6, which are all of the PWM controllable outputs to my knowledge. Attached is a picture of the extruder fan and part cooling fan wired to output 5/6Duet 3 Fans.jpg

          Rushmere3Dundefined 1 Reply Last reply Reply Quote 0
          • Rushmere3Dundefined
            Rushmere3D @AlecSanchez
            last edited by Rushmere3D

            @alecsanchez

            You have them wired incorrectly, you want the 2nd and 4th terminal.

            Check the wiring diagram here, https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Wiring_Diagram.

            Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

            AlecSanchezundefined 1 Reply Last reply Reply Quote 1
            • AlecSanchezundefined
              AlecSanchez @Rushmere3D
              last edited by

              @rushmere3d Ah I see it was wired to v_in + gnd thats why it was always on with no control. Thank you so much! They are working fine now

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