Part Cooling Fan on Duex5

jay_s_uk

@alexus I've just noticed a mistake on line 7 of your first post. It should be P1 and not P0.

But yes, essentially the tool fan is the part cooling fan of the active tool.

alexus

@jay_s_uk
if i cange to P1 i ger error
Error in start-up file macro line 103: Fan number 1 not found

assuming u meant to figuration like this?

; Fans
; Fan 0 -  print cooling
M950 F0 C"duex.fan3" Q500                             ; create fan 0 on pin fan0 and set its frequency //10.25.2024 - Used to be "fan0"
M106 P1 S1 H1                                    ; set value. Thermostatic control is turned off /S-speed 1==100%
; Fan 1 - ToolHeatsink Cooler
M950 F1 C"fan1" Q500                            ; create fan 1 on pin fan1 and set its frequency
M106 P0 T36 H0                               ; set fan P1 value. Thermostatic control is turned ON for sensor 0 (S0 in M308) H0

; Tools
M563 P0 D0 H0 F0                             ; define tool 0 (asign F0 as part cooling fan.. used to be F-1)
G10 P0 X0 Y0 Z0                               ; set tool 0 axis offsets
G10 P0 R0 S0                                  ; set initial tool 0 active and standby temperatures to 0C

droftarts

@alexus P0 on line 4, P1 on line 7.

Ian

alexus

@droftarts
ok so like this and GUI shows "Tool Fan" as name

; Fans
; Fan 0 -  print cooling
M950 F0 C"duex.fan3" Q500                             ; create fan 0 on pin fan0 and set its frequency //10.25.2024 - Used to be "fan0"
M106 P0 S1 H1                                    ; set value. Thermostatic control is turned off /S-speed 1==100%
; Fan 1 - ToolHeatsink Cooler
M950 F1 C"fan1" Q500                            ; create fan 1 on pin fan1 and set its frequency
M106 P1 T36 H0                               ; set fan P1 value. Thermostatic control is turned ON for sensor 0 (S0 in M308) H0

droftarts

@alexus said in Part Cooling Fan on Duex5:

See https://docs.duet3d.com/en/User_manual/Connecting_hardware/Fans_connecting#thermostatically-controlled-fans

The convention is that Fan 0 is the part cooling fan (or tool fan) and Fan 1 is the thermostatic fan for the hot end. Though it actually doesn't matter too much which way around you do it, but most importantly:

Note: thermostatic fans SHOULD NOT be mapped to tools.

Currently, you have Fan 0 (F0) as thermostatic with H1, and Fan 1 (F1) as not thermostatic (H0), and have F0 mapped to your tool:

; Tools
M563 P0 D0 H0 F0 ; define tool 0 (asign F0 as part cooling fan.. used to be F-1)

You initially said you wanted the part cooling fan on the Duex, so I would guess what you actually want is:

; Fans
; Fan 0 -  print cooling
M950 F0 C"duex.fan3" Q500                             ; create fan 0 on pin fan0 and set its frequency //10.25.2024 - Used to be "fan0"
M106 P0 S0 H0                                    ; set value. Thermostatic control is turned off /S-speed 1==100%
; Fan 1 - ToolHeatsink Cooler
M950 F1 C"fan1" Q500                            ; create fan 1 on pin fan1 and set its frequency
M106 P1 T36 H1                               ; set fan P1 value. Thermostatic control is turned ON for sensor 0 (S0 in M308) H0
 
; Tools
M563 P0 D0 H0 F0                             ; define tool 0 (asign F0 as part cooling fan.. used to be F-1)
G10 P0 X0 Y0 Z0                               ; set tool 0 axis offsets
G10 P0 R0 S0                                  ; set initial tool 0 active and standby temperatures to 0C

Ian

alexus

@droftarts said in Part Cooling Fan on Duex5:

; Fans
; Fan 0 - print cooling
M950 F0 C"duex.fan3" Q500 ; create fan 0 on pin fan0 and set its frequency //10.25.2024 - Used to be "fan0"
M106 P0 S0 H0 ; set value. Thermostatic control is turned off /S-speed 1==100%
; Fan 1 - ToolHeatsink Cooler
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 T36 H1 ; set fan P1 value. Thermostatic control is turned ON for sensor 0 (S0 in M308) H0

; Tools
M563 P0 D0 H0 F0 ; define tool 0 (asign F0 as part cooling fan.. used to be F-1)
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

yea i think thats what i want

alexus

@droftarts

so debuging futher to hardware level now

on GUI ive set fan 40% and VIN shows i have 24V on Duet2 board,....

when i measure voltage on Duex5 Fan3 port i get nothing there while Duex5 VIN has 24v measured, also Fan jumper is set to VIN

what could be wrong here? i tried fan speed 100% and no change

Phaedrux

Have you verified the fan works by connecting it to an always on fan port?

If the fan does work, Ttry a different duex fan port?

If it works there, perhaps the mosfet on the original port is damaged.

alexus

@Phaedrux which port is always on? also whats output voltage?

Phaedrux

The Duet mainboard has 2 always on fans. Voltage depends on what position you have set the fan voltage jumper. Either 5v or VIN.

https://docs.duet3d.com/duet_boards/duet_2_wifi_ethernet_maestro/duet_2_we_wiring_latest.png

alexus

@Phaedrux
heh yea i just looked up documentation and yes always on worjs so we know fan works lol

well let me try to assign say fan4 port see what happens

alexus

@Phaedrux
nope fun4 does not work either

alexus

@Phaedrux
interesting observation: when i disconnected tthermistor part cooling starts to spin on duex.fan4 port though speed control does not work. So port should be operable

droftarts

@alexus Can you post your current config.g, in full? I think there's a configuration error. Also what firmware are you using; post the response to M122.

Ian

alexus

@droftarts
well i kinda gave up and used configuration tool and extracted code related to fan and heater and it started to work majically so i think problem was some where in letter configuration lol
so now it looks like it wokring for fan parts at least