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    Hotend fan nor working.... :?

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    • Chrissundefined
      Chriss
      last edited by Chriss

      Hi *

      I'm a bit confused about a new problem with my IDEX printer. The hotend cooling fan for one of the two toolheads (T1) is not working and I do not understand why. I measure 1.9V when the fan should spin. The fan is connected to 122.out.2 on the 2nd toolboard (1LV v.1.0).

      ; Head 1 (left)
; Tune in with:  M303 H1 S270
; M308 S1 P"121.temp0" Y"thermistor" T500000 B4702 C1.171057e-7	; configure sensor 1 as thermistor on pin temp1 Revo
M308 S1 P"121.temp0" Y"thermistor" T100000 B4725 C7.060000e-8	; configure sensor 2 as thermistor on pin temp1 Revo
M950 H1 C"121.out0" T1                             ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S310                                       ; set temperature limit for heater 1 to 280C
; Head 2 (right)
; Tune in with:  M303 H2 S270
; M308 S2 P"122.temp0" Y"thermistor" T500000 B4702 C1.171057e-7	; configure sensor 2 as thermistor on pin temp1 Slice
M308 S2 P"122.temp0" Y"thermistor" T100000 B4725 C7.060000e-8	; configure sensor 2 as thermistor on pin temp1 Revo
M950 H2 C"122.out0" T2                             ; create nozzle heater output on out1 and map it to sensor 1
M307 H2 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit
M143 H2 S310                                       ; set temperature limit for heater 1 to 280C



;; Fans
; Fan for the printed part left:
M950 F0 C"121.out1" Q500                           ; create fan 0 on pin 121.out1 and set its frequency
M106 P0 S0 H-1 C"Part L"                           ; set fan 0 value. Thermostatic control is turned off
; Fan for the left hotend
M950 F1 C"121.out2" L0:1000 Q50                    ; create fan 1 on pin 121.out2 and set its frequency
M106 P1 S1 H1 T45  C"Hotend L"                     ; set fan 1 value. Thermostatic control is turned on

; Fan for the printed part right:
M950 F2 L0:1000 C"122.out1" Q50                    ; create fan 2 on pin 122.out1 and set its frequency
M106 P2 S0 H-1 C"Part R"                           ; set fan 2 value. Thermostatic control is turned on
; Fan for the right hotend
M950 F3 C"122.out2" Q500                           ; create fan 3 on pin 122.out2 and set its frequency
M106 P3 S1 H2 T45 C"Hotend R"                      ; set fan 3 value. Thermostatic control is turned on P=No. S=Speed H=ThermostaticMode 

;; Tools
; Tool 0 aka "the left wing" X
M563 P0 S"L" D0 H1 F0                              ; 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
; Filament sensor : Status  M591 D0
M591 D0 P5 C"121.io1.in" R230:360 E3.0 S0          ; S1 = Enabled S0 = Disabled

; Tool 1 aka "the right wing" U
M563 P1 S"R" D1 H2 F3 X3			; define tool 1 P=No. S=Name D=Extruder H=Heater F=Fan X=Mapping to X
;G10 P1 X0 Y0 Z0 ; set tool 1 axis offsets
;G10 P1 R0 S0; set initial tool 1 active and standby temperatures to 0C
G10 P1 Y0 U0 Z0 S0 R0 								; set tool 1  offsets and temperatures
; Filament sensor
M591 D1 P5 C"122.io1.in" R230:360 E3.0 S0          ; S0 = Disabled

      Anybody an idea where my typo is? (The fan for the left toolheat (T0) is working.)

      Firmware: RepRapFirmware for Duet 3 Mini 5+ 3.5.0-rc.3 (2024-01-24)
      Duet WiFi Server Version: 2.1beta7

      Cheers, Chriss

      oliofundefined 1 Reply Last reply Reply Quote 0
      • oliofundefined
        oliof @Chriss
        last edited by

        @Chriss how did you measure the voltage? VIN to the PWM´d ground or to some static ground like at the power connector?

        I would at first make try to configre the fan as a normally controlled fan and see if I can spin it up using M106. If that does not work, I would check my wiring (power to the board, wiring to the fan).

        <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

        Chrissundefined 1 Reply Last reply Reply Quote 0
        • Chrissundefined
          Chriss @oliof
          last edited by

          @oliof I measured with my oscilloscope, lust to make sure that I do not confuse any multimeter with the pulses.

          The toolboard "works" as expected, the heater the thermistor etc. But you are right I should simplify the setup first. I will check the fan on a other output first too. I may have a user error with my scope too. 😉

          We we agree that the software config is not totally wrong, isn't it?

          Chreers, Chriss

          oliofundefined 1 Reply Last reply Reply Quote 0
          • oliofundefined
            oliof @Chriss
            last edited by

            @Chriss you probably could drop the L parameters for the fan definitions, but other than that as far as I was able to compare with my IDEX config it looks alright. So if there is something utterly wrong, we both missed it.

            <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

            Chrissundefined 1 Reply Last reply Reply Quote 0
            • Chrissundefined
              Chriss @oliof
              last edited by Chriss

              @oliof You are right... Don't know why that L is in the config to be honest. I think that because of the tacho wire the fans have and I tried to make use of it. The config is 2+ years old, I can not explain everything. the M950s should be the same anyway. I will do that but I guess that it will not change anything.

              I need to solve a other problem with the printer, so I will to the analysis later/tomorrow.... Thanks for the input!

              Cheers, Chriss

              Chrissundefined 1 Reply Last reply Reply Quote 0
              • Chrissundefined
                Chriss @Chriss
                last edited by

                I played with the toolboard a bit today. I have the 12V when I measure between GND from out.1 and +12 from out.2. The fan starts to spin when I put a jumper wire between GND from out.1 and out.2. I have the feeling that I have fried the FED on be toolboard. 😞
                Need to look a bit at the docu to find find the FED and have a look at it.

                Chrissundefined 1 Reply Last reply Reply Quote 0
                • Chrissundefined
                  Chriss @Chriss
                  last edited by

                  I found it.... I had a other Fan3 which is my LED stripe, so there was a collision in the config. 😞

                  oliofundefined 1 Reply Last reply Reply Quote 1
                  • oliofundefined
                    oliof @Chriss
                    last edited by

                    @Chriss glad you got this sorted! I missed the LED as well.

                    <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

                    1 Reply Last reply Reply Quote 1
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