dac error
I'm having "dac" error when my hotend is heating up. It happens once in a while but it's annoying. Sometimes the temperature surges up to 230 as it approaches the set value of 210
I usually reset the printer and everything's back to normal. It somehow works. But I'ld hate it to happen during printing.
I'm using the 0.92.9 firmware on a Kossel Mini.
Comments
latly i have the same problem that some users have here
sins im using a fan , when the fans turns on the extruder temp going down alittle which im fine with that .
but the system decoupled the extruder .
i was looking at the graph and im sure this is cousing the shot down in mid print and plus im getting the decoupled massage
in order to make sure i was replacing shield plus arduino ,heater ,thermisitor , at last i was setting the dec in firmware to 0
and im still getting the dec massage after disabling it in firmware
the question is how do i solve this issue , i think that maybe PID will help ? how to disable completely dec in firmware
my setting
last firmware
last repetier host
ramp 1.4
im trying dead time control
thank you
disabling DAC didnt help , im still getting the massage and the result of that . (extruder decoupled )
now... when im not using the fan , the printer didnt stop to print all the way .
which is good for now
but when the fan kicking in when im using it in prints , something makes the system DEC after a few second or so .
my question is , lets say ill change the heater value lower then default setting , is that could help ??
could i change speed values only for the fan and not the extruder heater
thanks
elidor
You could try to re-aim your print cooling fan so it only blows on the print area, Or print/make a small shield that would block the fan from blowing on the heater block area. I don't know your model but there are fan duct files available ( free ), that you could print to aim the airflow. Even if the first one does not come out great because you have the fan off, as long as it is usable you can then print a better one with the fan mounted and airflow going where you want it.
I would not disable any of the features in firmware about safety.
To run PID there are many references on-line to do it. It is relatively painless.
Slicers usually have settings for cooling in their configuration.
the deviation is not more then 8 deg so 20 will work fine i guess .
so why when i was setting DEC to 0 which is disable , still trigger the dec feature ?
so i could adjust the fan ? by this Heater PWM speed >> 15HZ >> 30HZ >>61HZ>>122HZ ??
maybe that could help .. i cant turn on the fan on low speed . it will work only on 98-100 (on fan slider
- host)
thank
yes i know this issue , i can work with 5 deg daviation on my prints , the thing is that i didnt print for along time and
i just was trying to disable DAC by setting it to 0 in order to debug , but it didnt solve it so i was confused about it .
so i was trying to look for shorts on my electronics ,interference and such
i have set the Temperature control range 20 to 40 and it works
i was seeing lots of post that going around this issue ,when you set to 0 its not disabling the feture .
this is for enable /disable on extruder.cpp tab
so i wasn't sure what causing the issue , im working with repetier firmware from the begging and i had to update my self about some changes .
after all thanks to ronald we are having good time with the printer
thank you roko for the reminder and thank you master repetier
is there a way to disable only bed decouple ?
#define HEATED_BED_DECOUPLE_TEST_PERIOD 0
should do it at east in dev version. Not sure what works in 0.92.
GoMovies