Burkert Type 1150 - Manual (Page 91)

1150 - 89
O
PTIMIZATION
Check of the optimization
The optimum adaptation of the controller to the process can be checked by recording the start-up phase
with the control loop closed. The diagrams below indicate possible adjustment errors and how these can
be corrected.
The control response of a third-order control loop of a PID controller is shown as an example. However, the
procedure for adjusting the controller parameters can also be applied to other control loops.
Xp too large
Tn, Tv to small
Xp too small
Tn, Tv too large
optimum adjustment Cy too large