Johnson PCT Manually tuning PID's
I need some help manually tuning these loops. I have a forwarded email from a johnson rep detailing the steps for tuning out the loops. The problem is if I set my integral to anything less than 120 the PID goes unreliable from an input that is out of range. Is this some how linked to one of the other settings? etc Interval or process dead time? Does anybody have basic tactics for setting up there loops? Are you just messing with prob band and integral or are you going all out with process range, dead time and time constant as is suggested in the email I have received.