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    need help termostatic fan configuration

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    • c310undefined
      c310
      last edited by

      I have added 24v water pump and need some help to fix configuration it is fan2

      M106 P2 L20 X200 B0.1 H1 T55 S1 C"Water"

      when temp reaches 55 degrees, in the console i ask M106 P2
      output " M106 P2
      Fan 2 (Water), speed: 100%, min: 7%, max: 78%, blip: 0.10, temperature: 55.0:55.0C, sensors: 1, current speed: 7%:"

      Question: why it is only 7% ???

      if i do M106 P2 H-1 S1 pump works at 100%. 👻

      thank you!

      M308 S0 P"bed_temp" Y"thermistor" T10000 B4250 R4700  	; define bed termistor sensor
      M950 H0 C"bed_heat" T0 						; heater 0 uses the bed_heat pin, sensor 0
      M140 H0 P0 
      
      M308 S1 P"spi.cs1" Y"rtd-max31865" R395 F50 ; PT-100 sensor
      M950 H1 C"e0_heat" T1				        ; heater 1 uses the e0_heat pin and sensor 1
      M143 H1 S350 A0 							; max temp 350 on heater 1, fault if above 
      M570 S60 H1 P10 T15 						; Hot end may be a little slow to heat up so allow it 120 seconds and 10 sec fault tolerance  and 15 degrees 
      
      M950 F2 C"fan2" Q15500 
      M106 P2 L20 X200 B0.1 H1 T55 S1 C"Water"	; exrtruder PUMP config and off 
      
      M308 S20 Y"mcu-temp" A"CPU" 				; CPU temp sensor
      M308 S21 Y"drivers" A"Duet_drv" 			; drivers temp sensor 
      M950 F1 C"fan1" ; Q22000
      M106 P1 L20 T43:63 H20:21 C"System"			; system FAN min speed 10 MCU or Driver thermistor controlled cooling range 44...63 degrees 
      
      M950 F0 C"fan0" Q32500 
      M106 P0 L20 X255 H-1 B0.1 S0 C"Berd"		; print FAN config and off 
      
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      • fcwiltundefined
        fcwilt
        last edited by

        Hi,

        For some reason you cannot use the L or X parameters in M106 for a thermostatic fan.

        If you have L and X the fan speed is either 0 or L.

        If you have only L the fan speed is either 0 or S.

        if you have only X the fan speed is either 0 or default L which is 0.1.

        I tested M106 with/without the L and X parameters and that is what I discovered - at least with firmware 3.2.2.

        Frederick

        Printers: a E3D MS/TC setup and a RatRig Hybrid. Using Duet 3 hardware running 3.4.6

        c310undefined 1 Reply Last reply Reply Quote 0
        • c310undefined
          c310 @fcwilt
          last edited by c310

          @fcwilt thanks!

          @dc42 is it a bug ? on one side it is logical, bun on the other - especially if we use T range T40:60 as an example L and X might be needed

          1 Reply Last reply Reply Quote 1
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