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    PWM Fans not responding to GCodes

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    • BenNorton01undefined
      BenNorton01
      last edited by

      Hi All
      Once again, there is another person struggling to configure their Print Cooling Nozzle Fan. I have read all of the other posts regarding this issue but still have not succeeded. I have my nozzle fan connected to Fan0 on my Duet 2 Wifi (2.02 Firmware) and Heatsink fan on Fan1.
      So far, I have tried adjusting the blip time, changing the frequency, tried different Fan connections, re configuring tool settings and just about everything else.
      I understand that Fan0 is set for PWM on the nozzle fan by default and tried to run the fan with no config settings for it, but I figure it wouldn't hurt to put it back in (whether its a good idea or not).

      My Config.g is below:

      *; Fans
      M106 P0 S1 I0 F500 H-1 B1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
      M106 P1 S1 I0 F500 H4 T30:55 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
      M106 P6 S1 F500 ; configure fan 6 as always on
      M106 P7 S1 F500 ; configure fan 7 as always on

      ; Tools
      M563 P0 S"Nozzle 1" D0 H1 ; Define tool 0
      G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
      G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C*

      Thank you all for the help.

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      • Phaedruxundefined
        Phaedrux Moderator
        last edited by Phaedrux

        Does the fan itself work if plugged into the always on fan header?

        Have you tried without the I0? Or with I1?

        Z-Bot CoreXY Build | Thingiverse Profile

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        • BenNorton01undefined
          BenNorton01
          last edited by

          Hi Pheadrux
          Yes, it does work from the always on fans and I have tried to adjust the Signal Inversion.
          I am starting to think that it is the fan that I am trying to use. It is a Cera Dyna ATX Radial fan.
          I will try come different fans and hopefully they will work.
          Thanks for the help!

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          • cdl1701yahoo.comundefined
            cdl1701yahoo.com
            last edited by

            @BenNorton01 said in PWM Fans not responding to GCodes:

            ; Tools
            M563 P0 S"Nozzle 1" D0 H1 ; Define tool 0

            Try this:

            ; Tools
            M563 P0 S"Nozzle 1" D0 H1 F0 ; Define tool 0

            I assume that your heat sink fan works fine?

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