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Tuning A Pid Controller

determining tuning parameter

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#1 Pingue2008

Pingue2008

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Posted 06 June 2016 - 01:01 PM

Dear members,

 

I need some serious help on PID tuning. I spent a lot of time online and on YouTube.

 

First off, i am not an expert. I was introduced to control couple years ago however i have never done tuning. Please bear with me. I have attached a trend and a compiled info on steps to go through  the tuning loop. 

 

1- The first step is to check the physical controller. I did that with I&E supervisor. checked out

2- Do a bump test in Manual. This is where my problem started. The measurement is Up and Down. It never on SPT. Please see the attached trend. I just don't want to move numbers around just for the sake of changing them.

The help i am seeking may be out of scope of this forum. i need an expert to hold my hand on this one. My loop is a cascade loop. The output of my pressure controller feed into my temperatures controller. I am using a Foxboro I/A series 6.5.6. Any documentation will help. I checked with Foxboro they told me there are training courses for this but management does not want to pay for it yet so i need to figure this on my own. Any help, documentation ect...

 

Thank you,

Attached Files



#2 breizh

breizh

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Posted 06 June 2016 - 06:29 PM

Hi Pingue ,

You should ask support from E/I engineer or technician . I've attached documents to support your work.

Hope this helps

 

Breizh

Attached Files



#3 Pingue2008

Pingue2008

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Posted 07 June 2016 - 12:20 PM

Thank you.






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