Figure 10-4 Quick Response With Overshoot: P2280 = 0.30; P2285 = 0.03 S; Figure 10-5 Quick Response With Overshoot, But Instability:p2280 = 0.55; P2285 = 0.03 S - Siemens MICROMASTER 411 Operating Instructions Manual

10 Engineering Information
10.2.2.5 PI Controller Proportional and Integral terms
The user can tune the performance of the PI controller to suit the process demands
by adjusting P and I terms, P2280 and P2285. The demands of the process will
determine the optimal type of response, from a rapid recovery response with
overshoot to a damped response. By adjusting the P and I parameters it is possible
to achieve different types of response.
Example:
The following figures show how different responses to a 5% PI setpoint step
change on a pressure control system. The traces show the PI feedback signal, with
1 V = 10%. The different responses are achieved by varying the settings of P2280
and P2285.
Figure 10-4
Figure 10-5
124
Quick response with overshoot: P2280 = 0.30; P2285 = 0.03 s
Quick response with overshoot, but instability:P2280 = 0.55; P2285 = 0.03 s
MICROMASTER 411 & COMBIMASTER 411
Issue 03/01
Operating Instructions
6SE6400-5CA00-0BP0