Problem with connecting fan to Duet 3

Grzegorz

Hello,
I'm having trouble with connecting my two wire 12 volt non pwm extruder fan to duet 3. I want it to be turned on after reaching the temperature of 45 degrees Celsius. I have tried to connect it in many ways, mainly between OUT4-OUT7 connectors, but with no results - it wasn't spinning at all, or in case when i connected it to OUT7, it was working only below required temperature. I was hoping that when i wire it between PWM pin and GND pin and set PWM to 100% it would work. My question is, how can i connect it in the way that it works? Im also putting below part of my config.g file.

M308 S1 P"temp1" Y"pt1000" R2200             ; configure sensor 1 as PT1000 on pin temp1
M950 H1 C"out1" T1                           ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 A500 C170 D4.3 S1.00              ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S280                                 ; set temperature limit for heater 1 to 280C

; Fans
M950 F1 C"out5" Q500	                     ; create fan 1 on pin out7 and set its frequency
M106 P1 S1.0 H1 T45 C"Hemera"                ; set fan 1 value. Thermostatic control is turned on

jay_s_uk

@grzegorz said in Problem with connecting fan to Duet 3:

; Fans
M950 F1 C"out5" Q500 ; create fan 1 on pin out7 and set its frequency
M106 P1 S1.0 H1 T45 C"Hemera" ; set fan 1 value. Thermostatic control is turned on

Remove the .0 after S1
Also are you sure you have the appropriate jumpers fitted to se the output voltage used on the fan connectors?

Grzegorz

@jay_s_uk Thanks for reply. My jumpers are fitted between middle pin and 12V.

jay_s_uk

@grzegorz Can you also confirm how you have them wired?

Grzegorz

@jay_s_uk The brown one is connected to PWM and the pink one is connected to GND.

Grzegorz

@jay_s_uk said in Problem with connecting fan to Duet 3:

Remove the .0 after S1

Unfortunately still nothing happens.

jay_s_uk

@grzegorz nothing will happen as you've connected it to ground and the out4. The MOSFETs switch to ground.
You need to connect between the outlc and out

Grzegorz

@jay_s_uk Thanks a lot, it works fine now.