Fan connection issue to Duet 3 ToolBoard 1LC

prizzrak

Hi. I have a problem with connecting of fan to Duet 3 ToolBoard 1LC. My configuration is:

3pin PWM 12V fan (Noctua)
Duet 3 ToolBoard 1LC v1.1 with address 20 on the CAN Bus
Duet 3 Mainboard 6HC connected via SPI to RPi
DSF version is stable 3.3.0 (tried on the last beta 3.4 too)

Fan is connected to out2 port:

I have tried several DWC configuration for fan turning on:

PWM controlled thermostatically:

M950 F1 C"!20.out2+out2.tach" Q500
M106 P1 S255 H1 T20 C"HeatBreakCool0"

PWM with manual control:

M950 F1 C"!20.out2+out2.tach" Q500
M106 P1 S255 H-1 C"HeatBreakCool0"

Without PWM:

M950 F1 C"20.out2" Q500
M106 P1 S1 H1 T20 C"HeatBreakCool0"

But fan does not work in all configurations. I checked voltage on the out2 and it's 12V at least in C"20.out2" variant. And this fan works correctly on main board on out9 port:

M950 F3 C"0.out9"
M106 P3 S255 H-1 C"ToolchangerStepper"

I have no more ideas what I do incorrect, but feels what smth goes wrong. Maybe anybody have advices what I can check more? Thanks.

Phaedrux

@prizzrak said in Fan connection issue to Duet 3 ToolBoard 1LC:

                                                                                                                            M950 F1 C"!20.out2+out2.tach" Q500

Are you intending to invert the pin with ! here?

prizzrak

@phaedrux said in Fan connection issue to Duet 3 ToolBoard 1LC:

@prizzrak said in Fan connection issue to Duet 3 ToolBoard 1LC:

                                                                                                                            M950 F1 C"!20.out2+out2.tach" Q500

Are you intending to invert the pin with ! here?

Yes, it's from config taken from example from documentation:

M950 F3 C"!out5+out5.tach" ; Fan 3 uses out5, but we are using a PWM fan so the output needs to be inverted, and using out5.tach as a tacho input

Although I see now that it was for 4-wire fan, so for my setup it's wrong. Anyway I tried "20.out2+out2.tach" and "20.out2" and fan doesn't work =(

oliof

@prizzrak for me the following worked in the past with a noctua 3 wire fan:

M950 F1 C"10.out2+out2.tach" Q5000                    ; create fan 1 on pin out2 and set its frequency, and tacho output on out2.tach
M106 P1 S1 H1 T45                                     ; set fan 1 value. Thermostatic control is turned on

dc42

@prizzrak I am using the same wiring as in your photo to connect a 3-pin fan to a tool board on one of my machines; except that on my fan the tacho wire is white not yellow. I use these lines to configure it:

M950 F5 C"22.out2+out2.tach" 			; Tool 2 hot end fan with tacho
M106 P5 S1 H3 T50 				; Tool 2 hot end

So similar to @oliof.

prizzrak

@dc42, @oliof nope guys, it just doesn't work, just doesn't works... Attaching full config.g, maybe there are something wrong more, it's just mystics.

oliof

does another two wire fan work on this connector? Alternately you could try unhousing the crimps and move to OUT1 to test whether it works there after moving the pins into a 4-connector housing.

prizzrak

@oliof I have tried to connect other 2-pin fan which works correctly on the main board ("0.out9") and see that it doesn't work on tool board same way. Changing connection to out1 doesn't help, both fans (3pin PWM, 2pin) do not work on this port too.