PLA fan problem
i need help!
i work with simplify3d, in the cooling tab i have the following settings for the fan:
layer 1: speed: 0
layer 2: speed: 100
but the fan wont work... just if i turn it on manually.
what to do?
Re: PLA fan problem
Hi Mila, the number is a percentage . So 50% in simplify. Should equate to 128 on the LCD... as it is not running. Check that the connector is the correct way round on the Rambo board.
Regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: PLA fan problem
Hi,
i have the same problem. The Fan is all right blows as it should if turned on via the Printercontrols. But Settings in S3D wont affect it at all it just wont turn on. Any further suggetions?
EDIT: I checked the generated G-Code for a M106 commad and cant't find any. So i suggest it is a Problem related to S3D? At least i set the Fan for "0" on Layer 1 and to "255" for layer 2 so it should Generate a command. Settings don under tab Cooling in Process settings.
Re: PLA fan problem
my problem is the same! its working fine with the "pre installed" on card files, but when i generate S3D gcode it wont work!
im not a novice to 3d printing its my 9th printer. i have 8 FlashForge Creators, one BIGREP and one 3DP1000
from what understand i should change the value to 255 instead of 100 for layer 2? is that correct?
Re: PLA fan problem
The fans I come across in many of my 3D printers are all or nothing mostly. 50 % to 70% no spin, 100 % they always spin. Fan control is not exact.
Nigel
Life is keeping interested and excited by knowledge and new things.
Re: PLA fan problem
my problem is the same! its working fine with the "pre installed" on card files, but when i generate S3D gcode it wont work!
im not a novice to 3d printing its my 9th printer. i have 8 FlashForge Creators, one BIGREP and one 3DP1000
from what understand i should change the value to 255 instead of 100 for layer 2? is that correct?
Right. fan speed in the firmware is registered as a valuer between 1-255. so 255 would be 100%
Re: PLA fan problem
The fans I come across in many of my 3D printers are all or nothing mostly. 50 % to 70% no spin, 100 % they always spin. Fan control is not exact.
It depends on each type of fan. Rambo uses PWM to control fan RPM. It means it switches power to fan from off to on very fast. Since they are brushless fans, they need electronics to control rotation. Some fan electronics cannot handle this type of powering and resets on each power off, so the fan only trembles a bit and doesn't start.
The solution is
- use another fan
- build your own firmware with option "FAN_SOFT_PWM" enabled, but it creates a bit annoying sound of fan since SOFT_PWM frequency is quite slow (about 8Hz)
- implement simple RC low pass filter at fan output (needs some electronics skills)
Re: PLA fan problem
The cooling settings in S3D are based on percentage so the highest value you should enter is 100.
Also, in the Cooling tab there is an option to "Blip fan to full power when increasing from idle". Make sure this is enabled.
Re: PLA fan problem
I contacted S3D support. They provided a profile which works fine for me. I do not know yet what the cause of the Problem was may be been myself.
Re: PLA fan problem
Interesting, looks like the Simplify3D profile has the blip fan setting off where the Prusa profile has it turned on.
Also, the big difference (unrelated to your profile) between the two profiles is the Prusa-provided one has extra post-processing steps:
{REPLACE "; outer perimeter\n" "; outer perimeter\nM204 S600\n"}
{REPLACE "; inner perimeter\n" "; inner perimeter\nM204 S1200\n"}
{REPLACE "; solid layer\n" "; solid layer\nM204 S1500\n"}
{REPLACE "; infill\n" "; infill\nM204 S2000\n"}
I don't really know gcode well enough to know what that's doing, but I know the Prusa-provided profile added that after a firmware update.
Re: PLA fan problem
Interesting, looks like the Simplify3D profile has the blip fan setting off where the Prusa profile has it turned on.
Also, the big difference (unrelated to your profile) between the two profiles is the Prusa-provided one has extra post-processing steps:
{REPLACE "; outer perimeter\n" "; outer perimeter\nM204 S600\n"}
{REPLACE "; inner perimeter\n" "; inner perimeter\nM204 S1200\n"}
{REPLACE "; solid layer\n" "; solid layer\nM204 S1500\n"}
{REPLACE "; infill\n" "; infill\nM204 S2000\n"}
I don't really know gcode well enough to know what that's doing, but I know the Prusa-provided profile added that after a firmware update.
It is setting default acceleration for the different printing processes
http://reprap.org/wiki/G-code#M204:_Set_default_acceleration