Function Code 19 for Infi 90
I have seen the FC Code 19 , It is PID , I remember that PID algorithm for this block is parallel according to information , Is that correct ?
I know there is another Function Code Advance PID which it has option to choose , classical , etc.
When we open the FC 19 we can specs S6 , S7, S8 regarding to Kp( proportional) , Ki ( integral constant rep/min) , Kd ( derivative constant) min .
It could seem a little bit confusing because usually parallel algorithm usually does not mention them ( rep/min or min)
if customer would need to change to AC800M just only one controller they have some PIDs configured . Customer is not using derivative tune parameter.
I remember that AC800M for PID algorithm is Standard ( same like AC450 ) According to the concepts Kc for standard algorithm = Kp for parallel algorithm , then to convert the values for integral part , the equation would be Ki = Kc/Ti .
For AC800M Ti ( Time integration) is in seconds.
Conversion would be : Ti = ( Kc / Ki ) * 60 ( in seconds) , not (1 /Ki) *60 it would be little bit different and the result would be different.
Thanks for you support