Part Cooling Fan not working
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My part cooling fan is always running at a certain speed and doesn't change at all with commands (M106) or using the DWC.
Here is my config:
- ; Configuration file for Duet 3 MB 6HC (firmware version 3.3) ; executed by the firmware on start-up ; ; generated by RepRapFirmware Configuration Tool v3.3.12 on Mon Sep 05 2022 02:51:18 GMT-0700 (Pacific Daylight Time) G4 S5 ; General preferences G90 ; send absolute coordinates... M83 ; ...but relative extruder moves M550 P"Duet 3" ; set printer name ; Drives M569 P0.0 S1 ; physical drive 0.0 goes forwards M569 P0.1 S1 ; physical drive 0.1 goes forwards M569 P0.2 S1 ; physical drive 0.2 goes forwards M569 P121.0 S0 ; physical drive 121.0 goes forwards M584 X0.0 Y0.1 Z0.2:0.3 E121.0 ; set drive mapping M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation M92 X80.00 Y80.00 Z800.00 E409 ; set steps per mm M566 X900.00 Y900.00 Z60.00 E3000 ; set maximum instantaneous speed changes (mm/min) M203 X6000.00 Y6000.00 Z180.00 E7200 ; set maximum speeds (mm/min) M201 X500.00 Y500.00 Z20.00 E6000 ; set accelerations (mm/s^2) M906 X800 Y800 Z800 E1100 I30 ; set motor currents (mA) and motor idle factor in per cent M84 S30 ; Set idle timeout ; Set idle timeout M671 X290:290:40:40 Y0:270:0:270 P0.5 ; Axis Limits M208 X0 Y0 Z0 S1 ; set axis minima M208 X295 Y320 Z250 S0 ; set axis maxima ; Endstops M574 X2 S1 P"io0.in" ; configure switch-type (e.g. microswitch) endstop for high end on X via pin io0.in M574 Y2 S1 P"io1.in" ; configure switch-type (e.g. microswitch) endstop for high end on Y via pin io1.in M574 Z1 S2 ; configure Z-probe endstop for low end on Z ; Z-Probe M950 S0 C"121.io0.out" ; create servo pin 0 for BLTouch M558 P9 C"121.io0.in" H5 F600 T12000 A2 S0.03 R0.4 ; set Z probe type to bltouch and the dive height + speeds G31 P500 X-50 Y-15 Z4 M557 X15:295 Y5:315 S35 ; define mesh grid M591 D0 P3 C"121.io1.in" R60:140 S1 ; filament monitor ; Heaters M308 S0 P"temp0" Y"thermistor" T100000 B3950 ; configure sensor 0 as thermistor on pin temp0 M950 H0 C"out0" T0 ; create bed heater output on out0 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 S100 ; set temperature limit for heater 0 to 120C M308 S1 P"121.temp0" Y"pt1000" ; configure sensor 1 as PT1000 on pin 121.temp0 M950 H1 C"121.out0" T1 ; create nozzle heater output on 121.out0 and map it to sensor 1 M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit M143 H1 S500 ; set temperature limit for heater 1 to 450C ; Fans M950 F0 C"121.out1" Q500 ; create fan 0 on pin 121.out1 and set its frequency M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off M950 F1 C"121.out2" Q500 ; create fan 1 on pin 121.out2 and set its frequency M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on ; Tools M563 P0 S"E3D Hemera with Volcano" 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 M912 P0 S-10 G4 S5 M591 D0 M570 H1 P15 T30 ; An anomaly on heater 1 must persist for 4 seconds, and must be greater or less than 15C from the setpoint, to raise a heater fault. M501 -
Have you used that fan successfully elsewhere to know that it accepts PWM speed control?
You can try altering the M950 Q parameter higher or lower to see if you get better control.
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@Phaedrux I have already tried increasing Q value (250, 10, 5000, 1000, 10000, 100000, etc.) I have tried a known good fan, still 100%. I just read this post https://forum.duet3d.com/topic/18350/duet-toolboard-fan-issue and the user had a similar problem they said that they put their fan on the PWM pin. Right now, I have a two-wire fan on out 1 connected to GND and VOUT is this correct or do I switch wiring.
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Screen Shot 2023-01-04 at 10.47.59 PM.png
How exactly is your fan wired?
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@Phaedrux My part cooling fan has + wire to out 1 +VOUT and the - wire to GND it's a two-wire fan.
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Then yes, you need to switch the - wire to the pin labeled "out1" on the wiring diagram, which is the pwm capable pin.
Attaching the negative wire to ground will just be always on.
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