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Will turn www.example.com into [URL]http://www.example.com[/URL].
That would be awesome. I'll keep an eye out for it.
The numbers to properly calculate for the ADAPTIVE S or M loops depend on the equipment being used and should not be guessed at. guessing can lead to a very unstable and unreliable loop. I can try to publish the tuning spread sheet on here. As well as the proper way to calculate the numbers for a PID Loop.
Try using 3,3,9 for the tuning variable on the adapt statement. These numbers seems to be stuck in my memory from when I did it last.
We have the latest version of insight 3.12. We have some programs that use adapt statements for fan speed control. I tried to use an adapt on a cooling valve loop one time and it just seemed to be very erratic. I will try the P 0 0 method and see how that works. Most of our temps stay with-in a degree high or low most of the time with about 2 or 3 overshoots per hour. It may not get any better than that. You guys tell me
When I was working at Siemens I would use the following procedure. 1. Set P to a large & probably outrageous value, I & D set to zero. 2. Adjust P down until you get the smallest P value without hunting. You may not reach set point. 3. Adjust I up to get the the most stable loop output without hunting. I found the D value didn't need to be more than 0 for most applications. I helps if you modify the loop statement to use virtual points for the P, I & D values when tuning the loop & then hard code the final values in loop statement to finish the tuning.
I have an older 3.6 version. We have been phasing out Siemens and replacing it with Automated Logic. I have seen the new adapt statement, but cannot implement it in my facility.
What version of insight are you using? Have you tried the ADAPT statement?
I assign virtual points to the P, I, and if used D so I can tune the loop without re-downloading program. Become good friends with the dynamic plotter. It has helped me tune many loops as long as you are on insight and not datamate. Good luck
P of 500, I of 5 and D of 0 is a standard staring place. The type of sensors and output don't affect the loop and although they say there is a way to calculate the numbers in the MMI menu I usually just adjust them until it works the way I want -Jeremy
Can anybody help?
Tuning Siemens loop statements New to tuning pid loops in insight. I know which parameters to tune, but I would like an example of where to start. Temp sensors 20 to 120f I think. Control valves 0-10vdc. Most of the statements are around 500,5,0. Is this a good place to start? What numbers would you guys use and how did you come about them? And finally a little insight on how to tune the loop. All your help is appreciated.
Tuning Siemens loop statements
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