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    Overtemperautre on bed - turn off PS_on - possible yet?

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    • Martin1454undefined
      Martin1454
      last edited by

      Hello, a while back with firmware v.2 I remember it was not possible to to change what to do in case of a thermal error.

      Since the firmware is now v3, have there been added any way to add M81 in case of overtemperature error?

      Im running a solid state relay for my bed heater, but in case of it failing short, I would like to use an mechnical relay before it that is attatched to the PS_ON.

      Br. Martin

      BoAundefined 1 Reply Last reply Reply Quote 0
      • BoAundefined
        BoA @Martin1454
        last edited by

        @Martin1454
        https://duet3d.dozuki.com/Wiki/Gcode#Section_M143_in_RRF_3_01RC2_and_later

        Martin1454undefined 1 Reply Last reply Reply Quote 1
        • Vetiundefined
          Veti
          last edited by

          i think a thermal fuse is safer.

          BoAundefined 1 Reply Last reply Reply Quote 1
          • BoAundefined
            BoA @Veti
            last edited by

            @Veti Best to have both. And set software limits below fuse limit, so the fuse disconnects only when it is absolutely required.

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            • Martin1454undefined
              Martin1454 @BoA
              last edited by

              @BoA said in Overtemperautre on bed - turn off PS_on - possible yet?:

              @Martin1454
              https://duet3d.dozuki.com/Wiki/Gcode#Section_M143_in_RRF_3_01RC2_and_later

              So to be sure, if I use M143 with A1, it will trigger PS_ON to off if it succeds the S parameter right? or does A parameter have to be something else? I see that if I set it to A0 and then set up M570, it will wait some time and then trigger, but does it do it immediately with A1/ A2?

              BoAundefined 1 Reply Last reply Reply Quote 0
              • BoAundefined
                BoA @Martin1454
                last edited by

                @Martin1454 A1/A2 - will switch off heater not printer, A3 - shut down printer.

                Martin1454undefined 1 Reply Last reply Reply Quote 1
                • Martin1454undefined
                  Martin1454 @BoA
                  last edited by

                  @BoA Thanks!

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