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I need the help in the Tuning of PID in FBD block of SBO for Return Air Temperature control using chilled water valve.
I am using PIDA block. I start with the proprtional gain -25, Ti = 0, Td = 0.
But this cause the hunting. To find Ti, Td, I used PID tuner (Please refer attached XML, I found this on community) but it didnt help.
After consuming much time, It is repetedly giving error "Relay not Switching", hence I gave up.
I did search on for this PID tuner, on community but found that its development is stopped.
if anyone have used this tool before then please help.
Is there any standard procedure or tool to find suitable values for G, Ti, Td, control interval etc ?
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