Burkert Type 8793 - Manual (Page 246)

246
Additional technical information
The controller parameters can then be calculated from K
krit
and T
krit
according to the following table.
Adjustment.of.the.parameters.according.to.Ziegler.and.Nichols
Controller type Adjustment of the parameters
P controller Kp = 0.5 K
krit
- -
PI controller Kp = 0.45 K
krit
Tn = 0.85 T
krit
-
PID controller Kp = 0.6 K
krit
Tn = 0.5 T
krit
Tv = 0.12 T
krit
Table 131: Adjustment of the parameters according to Ziegler and Nichols
The adjustment rules of Ziegler and Nichols have been determined for P-controlled systems with a time delay of
the first order and dead time. However, they apply only to controllers with a disturbance reaction and not to those
with a reference reaction.
english
Type 8792, 8793