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from the Amateur Nerd department...
PID Controllers
Continuous process industries, DCS questions. topic
Posted by Tarun Tulas on 22 December, 2007 - 3:01 am
What is the minimum possible proportional gain setting that can be put in a electronic single loop controller?

Any examples of extremely fast processes and the proportional gain put for them?
Reply to this post...

Posted by Issac on 22 December, 2007 - 4:00 pm
Depends on the brand and model, but most do proportional gain to three decimal places so minimum gain would be 0.001

Such is the case with Honeywell UDC and Siemens/Moore 353

Issac
Reply to this post...

Posted by Dick Compton on 23 December, 2007 - 4:52 pm
Along with gain settings, for fast loops be aware:

What is scan time of sensor input?
Any built-in averaging of sensor input (used to eliminate some sensor noise)?
Reply to this post...

Posted by V.Jagdish Prakash on 23 December, 2007 - 4:52 pm
Give me more details of your application and I can answer your doubts.
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