• State Verified Answer
  • Replies 11 replies
  • Answers 1 answer
  • Subscribers 5478 subscribers
  • Views 42250 views
  • Users 0 members are here
Recent DeltaV Community Connect Discussions
Similar Posts
OUT SCALE of PID Block
Get PID block out of IMAN
Getting out of IMAN mode in PID
Any way to make a PID OUT = IN?
FF AO in Out of Service and PID in IMAN
Share

Multiplication of PID out with another PID out before passing to AO

Hi,
I have configured a PID control module with AI1 and AO1 for Input and output respectively, let us consider it as PID1.
I Have kept a multiplication block between my PID1 out and AO1's CAS_IN. In the Multiplication Block my PID1 out will be multiplied with another PID blocks output lets say PID2 (PID 2 out scale is 0.95 to 1.05) as per process requirement.
The BKCAL_OUT of AO1 Block is wired to BKCAL_IN of my PID1
In this case if my PID1 generates an output of 20 and my PID 2 output is 100% (ie 1.05 as per out scale) my value at CAS_IN of A01 will be 21,So  my PID1 BKCAL_IN will get 21.
Is this configuration correct? Normally PID out and AO blocks BKCAL_OUT will be same so what will happen in this case? Hope you understand what Im trying to do please suggest is there is any better way.
Thanks,
Neeraj S
Neeraj S
  • gamella
    Ok, thanks.

    Not sure because FX3762 function is unknown but I will use a ratio where RATIO is slave of TIC3781 and FX3762 OPUT is wired into RATIO IN_1. Control valve is then slave of ratio block.

    IN_1 does not require BKCAL wired so I think this could be best approach as long as FX3762 OUTPUT seems to be a small value that will not require strict bumpless transfer precaution.

This is the official online community site of the Emerson Exchange, a forum for the free exchange of non-proprietary information among the global user community of all Emerson's products and services. Our goal is to improve the efficiency and use of automation systems and solutions employed at members’ facilities by sharing our knowledge, experiences, and application information.

Community Guidelines | Legal Information | Privacy Policy | Contact Community Manager

Website translation provided by Website Translator

© 2015-2026 Emerson Exchange. All rights reserved.