Question Part cooling fan stays on

[Dutchronnie]

Is it normal that the part cooling fan of the stealthburnes is always on?

When i want to print ABS the recommedations are to turn off the part cooling fan, but in klipper there is no slider by the "Hotend fan" and by the "Controller fan" and no possibility to turn them off.

I also tried to turn off the fan in Cura, toggle the cooling of, but when i print the fans are on.

Did i do something wrong in the build?

 

[pajtaz]

How did you connect the part cooling fan and what do you have in printer.cfg for part cooling fan? It sounds like you have configured the part cooling fan incorrectly in printer.cfg.

 

[NoGuru]

Yes the something is wrong for sure. The part cooling should only come on when requested by the slicer.

Also, do not turn it off for ABS. It stills needs cooling but it depends on speeds and material temps. For me, I run it around 30% for ABS/ASA at mild to faster speeds but I also have layer times set.

 

[Dutchronnie]

I have wired according the LDO wiring manual rev.A, i have checked it, and the connection between breakout pcb and octopus is correct.

The code in the printer.cfg is also according the basic configuration.

#####################################################################
#   Fan Control
#####################################################################

##  Print Cooling Fan - FAN0
[fan]
pin: PA8
kick_start_time: 0.5
##  Depending on your fan, you may need to increase this value
##  if your fan will not start. Can change cycle_time (increase)
##  if your fan is not able to slow down effectively
off_below: 0.10


##  Hotend Fan - FAN1
[heater_fan hotend_fan]
pin: PE5
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
##  If you are experiencing back flow, you can reduce fan_speed
#fan_speed: 1.0

##  Controller fan - FAN2
[controller_fan controller_fan]
pin: PD12
kick_start_time: 0.5
heater: heater_bed
fan_speed: 1.0

##  Exhaust fan - FAN3
#[heater_fan exhaust_fan]
#pin: PD13
#max_power: 1.0
#shutdown_speed: 0.0
#kick_start_time: 5.0
#heater: heater_bed
#heater_temp: 60
#fan_speed: 1.0

 

[pajtaz]

I have wired according the LDO wiring manual rev.A, i have checked it, and the connection between breakout pcb and octopus is correct.

The code in the printer.cfg is also according the basic configuration.

#####################################################################
#   Fan Control
#####################################################################

##  Print Cooling Fan - FAN0
[fan]
pin: PA8
kick_start_time: 0.5
##  Depending on your fan, you may need to increase this value
##  if your fan will not start. Can change cycle_time (increase)
##  if your fan is not able to slow down effectively
off_below: 0.10


##  Hotend Fan - FAN1
[heater_fan hotend_fan]
pin: PE5
max_power: 1.0
kick_start_time: 0.5
heater: extruder
heater_temp: 50.0
##  If you are experiencing back flow, you can reduce fan_speed
#fan_speed: 1.0

##  Controller fan - FAN2
[controller_fan controller_fan]
pin: PD12
kick_start_time: 0.5
heater: heater_bed
fan_speed: 1.0

##  Exhaust fan - FAN3
#[heater_fan exhaust_fan]
#pin: PD13
#max_power: 1.0
#shutdown_speed: 0.0
#kick_start_time: 5.0
#heater: heater_bed
#heater_temp: 60
#fan_speed: 1.0

That looks correct. If you say wiring from each piece of hardware to the toolhead PCB is correct (quadruple check this) and from toolhead PCB to breakout PCB is correct and from breakout PCB to Octopus is correct then maybe there is something else going on with printer.cfg. Do you have two printer.cfg in same folder? Can you attach the one you are using?

 

[Dutchronnie]

Maybe the pcb in the stealthburner, i shall check that to.

2 fans in the stealthburner, 1 controller fan and 1 hot end fan.
The controller fan i can i set from 0-100% and turn him off.

the upper fan is the controller fan, and the bottom fan is the part colling fan.

 

[Dutchronnie]

AH, i see it now. the upper fan is the part cooling fan
misunderstanding, i thought the lower must be the part cooling fan.

I turned on the upper fan and i feel a airstream by the nozzle.

 

[pajtaz]

So ... user error? I'm glad you got it fixed.

 

[Sanity Agathion]

Got it fixed? If the other fan turns on without control, it's possible that the mosfet has blown.

 

[Dutchronnie]

Yes it is fixed.

The part cooling fan is controlled by the slicer.
the cooling fan for the extruder is on, when i start to print and is not controlable.
Just like the fans in the skirts for cooling the electronics.