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    Heater fault when extruder start.

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    • eRickundefined
      eRick
      last edited by

      Hello,
      Every time when i start extrusion, heater have fallout (2000 C). On cold extrusion too. I use PT100. What could be causing this?

      ;--- Heaters
      M308 S0 P"bedtemp" Y"thermistor" A"Bed" T100000 B4138	; configure sensor 0 as thermistor on pin bedtemp
      M950 H0 C"bedheat" T0									; create bed heater output on bedheat and map it to sensor 0
      M307 H0 B0 S1.00										; disable bang-bang mode for the bed heater and set PWM limit
      M140 H0													; map heated bed to heater 0
      M143 H0 S120											; set temperature limit for heater 0 to 120C
      M308 S1 P"spi.cs1" Y"rtd-max31865" A"Extruder"			; configure sensor 1 as thermocouple via CS pin spi.cs1
      M950 H1 C"e0heat" T1									; create nozzle heater output on e0heat and map it to sensor 1
      M307 H1 B0 S1.00										; disable bang-bang mode for heater  and set PWM limit
      
      
      jay_s_ukundefined 1 Reply Last reply Reply Quote 0
      • jay_s_ukundefined
        jay_s_uk @eRick
        last edited by

        @eRick could well be interference from the motor cables.
        Does the PT100 cables run in the same bundle as the motor?

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

        1 Reply Last reply Reply Quote 0
        • eRickundefined
          eRick
          last edited by

          @jay_s_uk said in Heater fault when extruder start.:

          Does the PT100 cables run in the same bundle as the motor?

          Yes, but on my old configuration he worked correctly.

          jay_s_ukundefined 1 Reply Last reply Reply Quote 0
          • jay_s_ukundefined
            jay_s_uk @eRick
            last edited by

            @eRick you'll have to elaborate a bit more on what your old configuration was

            Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

            1 Reply Last reply Reply Quote 0
            • eRickundefined
              eRick
              last edited by

              @jay_s_uk said in Heater fault when extruder start.:

              @eRick you'll have to elaborate a bit more on what your old configuration was

              He was same but wichout covers and with old firmware.

              I will try separate motor cable from heater cable.

              1 Reply Last reply Reply Quote 0
              • eRickundefined
                eRick
                last edited by

                @eRick said in Heater fault when extruder start.:

                I will try separate motor cable from heater cable.

                God damn, it work. @jay_s_uk thanks for help :3

                1 Reply Last reply Reply Quote 1
                • eRickundefined
                  eRick
                  last edited by

                  @jay_s_uk
                  When I will replace extruder cable on shielded cable then that will it helps?

                  jay_s_ukundefined 1 Reply Last reply Reply Quote 0
                  • jay_s_ukundefined
                    jay_s_uk @eRick
                    last edited by

                    @eRick that would certainly reduce things but I think a shielded cable for the PT100 is also a good idea

                    Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                    1 Reply Last reply Reply Quote 0
                    • eRickundefined
                      eRick
                      last edited by

                      Ok thanks.

                      1 Reply Last reply Reply Quote 0
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