B
I am in the process of upgrading a Bailey DCS to a AB ControlLogix and have a few questions about some of the function blocks and how they work. Any help would be greatly appreciated.
First, the PID and APID function, there is a gain besides that of the Kp, Ki, Kd. Is this used to scale the PV to 0 - 100% to match the SP? If so how does this relate/affect the controller gains?
Another problem is the integrator function. What is the time basis? It has a code for sec, min, hour but no place to specify the amount. I am assuming that this is an amount of 1, so if it is set to hour then 1 hour. However I don't like making assumptions.
Again any help would be greatly appreciated.
First, the PID and APID function, there is a gain besides that of the Kp, Ki, Kd. Is this used to scale the PV to 0 - 100% to match the SP? If so how does this relate/affect the controller gains?
Another problem is the integrator function. What is the time basis? It has a code for sec, min, hour but no place to specify the amount. I am assuming that this is an amount of 1, so if it is set to hour then 1 hour. However I don't like making assumptions.
Again any help would be greatly appreciated.