Recommended PID settings for Auber WS-1211GPH and MES40

[sigmo]

I think you have the effect of I and D reversed. I is integral, or what we used to call "reset". D is derivative.

Integral should look at the error over a long interval and try to "reset" the set point to adjust for any lingering error.

D looks at the first derivative.

I tried to download the Auber manual, but I'm not sure which model the OP has, and they sell several. And the download didn't work on my phone for some reason.

This all points out one problem with all of this.

Some controllers may Express the proportional band in degrees of band width. Others may Express it as gain (which would have the opposite effect). So without a good explanation from the manufacturer, we could be tuning backwards!

I'll try downloading the manual when I am at a real PC, and once I know which model the OP has.

But just running it in P mode is likely just fine, and may actually be the best way. Plain old proportional control is often hard to beat!


Edit to add:

I now see your post explaining the P mode in this controller, and I also was able to view their manual now that I'm at a real PC. At a real PC, I can see which model of controller you have.

Sorry for hijacking the thread earlier, but since the discussion of using PID controllers with our smokers had been brought up in several threads, and I felt that it was worth discussing.

You're on the right track. There's nothing at all wrong with using only the proportional mode of the controller. As tallbm has advised, you can tweak the I and D values as you have time to experiment with it.

 

[sigmo]

... No delete of a post allowed, I guess. ;)

 

[dr k]

At 275 set temp on the WS-1510ELPM I run P mode 1/0/0 because of the max airflow at this temp. The out of the box seting is 7/600/150. So one half degree below set point is flashing for 50% to get back to set point. The resolution is in 1° increments but responds at 274.5°. 2/0/0 is 50% at 1° below set point. 3/0/0 is 272 100%, 273 66%, 274 is 33% and off at 275. At 275 I want the highest output in P mode when the temp drops past set point (off) for the fastest response which is 1/0/0. Smoking at 225 can be 2/0/0. Ramping for fish and sausage starting at 150 is 3/0/0. This is for my Gen 1 40 vent wide open with mailbox mod. If your smoker is smaller and/or a smaller vent hole then settings would be different. If P is 0 then it's an on/off controller like the stock Mes controller so P needs to be 1 or higher . After waiting too long on the factory settings and autotuned settings to get to set point I reread the instruction senario they gave with P mode I believe they used P=7 to figure the % equivlent when flashing/pulsing electricity.