BLtouch not deploying / PID auto tune issues
-
@Casugo When you are tuning I assume you are just using a single heater? If so, could you just run a single heater in "normal" mode and post the graph from that.
-
I heated the first heater, and it took approximately 20 minutes to reach the desired temperature.
-
@Casugo I've checked the code and it looks like RRF only allows a maximum time of 7 minutes for a hotend heater to reach the target temperature. It allows 30 minutes for a bed or heated chamber. So unfortunately it looks like your heater is too slow to be PID tuned as a hotend. You may be able to get it to tune by temporarily configuring it as a bed or chamber heater and getting the PID settings that way? If that does not work then I think you may have to set the heater parameters by hand, or ask DC42 to make changes to allow a longer heat up period.
The code in question is here: https://github.com/Duet3D/RepRapFirmware/blob/3.4-dev/src/Heating/LocalHeater.cpp#L677
-
@gloomyandy
Thank you so much!!!
I'll try to do it in that way.I have another question.
I sent a test print, and although the heaters reached the desired temperature, once the temperature was reached and it was about to start printing, the print job paused, and all temperature indicators suddenly showed 2000 (fig 1). Additionally, an error appeared in the console:
Error: Temperature reading fault on heater 1: sensor short to other wiring
Error: Temperature reading fault on heater 2: sensor short to other wiring
Error: Temperature reading fault on heater 3: sensor short to other wiring
Resume state savedfig1
Is the issue you mentioned related to this error as well?
Thanks.
-
@Casugo That issue looks more like some sort of wiring issue to me, I don't think it can be caused by any sort of firmware problem.
-
Okay, I'll check on the wiring and the tuning in heater chamber mode :).
Thank you and have a good day :D.
-
@gloomyandy
Hello!!I configurated each heater as a heated chamber and I was able to do the tunning.
Thank you a lot
