PID control using Micrologix 1000

[milne]

I have a refrigeration project that requires temperature control using PID and a Micrologix 1000. Does anybody know if there is somewhere I can obtain the ladder logic to create a PID algorthim in the Micrologix 1000.

 

[xyzz]

Are you sure you need PID algorythm?
How you will perform the P (proportional) part of regulation?

 

[milne]

Thanks for the reply.
I have been thinking about this project and ahve decided it only requires the solenoid to have "on off" control with a differential.
For future reference do you know of if there is a PID programme for the Micrologix 1000.

 

[Bozzy]

You may find here an helpful link:

http://domino.automation.rockwell.c...03419BCE8516F91785256AFB00725563?OpenDocument

If you search in the RA Knowledgebase you may find
other technotes reagrding Micrologix and PID.

Regards
Christian

 

[milne]

Thanks for the link I have downloaded the file. I have looked for Micrologix 1000 PID in the knowledgebase and to date have not found anything.
I will keep looking
Regards
Martyn