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Homeroasters - Home Roasting Coffee Community » DATALOGGERS - CONTROLLERS - RATE OF RISE METERS » Dataloggers/Controllers/Rate of Rise Meters

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TC4 PID Control Duty Min-Max
iPa	#1 Posted on 03/24/2022 2:03 AM
Newbie Posts: 44 Joined: December 22, 2021	Hi, PID Control panel, the default Artisan value for Duty is Min=-100 Max=100. For TC4 which value to use, Min=0 Max=100 is this correct? Thank you note: I use PAC Mode2


renatoa	#2 Posted on 03/24/2022 2:51 AM
Administrator Posts: 2493 Joined: September 30, 2016	Yes, the Min value should be zero of more. I prefer to use the narrowest range of usable values in real roast, instead 0-100. For example on my machine I have 20-80 min/max for ot1, set in TC4. 20% is the minimum I am using for preheat, and 65-72% is maximum reached in my roasts. Did you tried to perform any kind of heat control with the Artisan PID? even the simplest, like reaching and maintaining a fixed preheat temperature ?


iPa	#3 Posted on 03/25/2022 12:48 AM
Newbie Posts: 44 Joined: December 22, 2021	Quote renatoa wrote: Did you tried to perform any kind of heat control with the Artisan PID? even the simplest, like reaching and maintaining a fixed preheat temperature ? Yes, to tune the pid, at first with fixed temperature, then with a curve. But with wrong duty cycle value (-100/100) my settings was based on the video tutorial "TC4 Pid Control" ! Asap I wil make new tests with value 0/100 to see the impact. The idea of narrowest values seems interesting, I will try next.

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