Siemens Module B3 Manuale Utente

Siemens

Automation and Drives - SCE

T I A Training Document

Page 3 of 64

Module

Table of Contents

PAGE

2. Fundamentals of Control Engineering

2.2 Components of a Control Loop

2.3. Characteristics

2.4 Step Function for Examining Controlled Systems 12

2.5. Self-Regulating Processes

2.5.1. Proportional Controlled System without Time Delay 13

2.5.2. Proportional Controlled System with a Time Delay 14

2.5.3 Proportional Controlled System with Two Time Delays 15

2.6 Controlled Systems without Inherent Regulation 17

2.7 Types of Controllers

2.7.1 Two Position Controllers

2.7.2 Three Position Controllers

2.7.3 Basic Types of Continuous Controllers 21

2.8 Objectives for Controller Adjustment 27

2.9 Digital Controllers

3. Discontinuous Action Controller as Two Position Controller 31

3.1 Function and Problem Description 31

3.2 Possible Solution for the PLC Program: 34

4. Controller Block (S)FB41 "CONT_C" as Software PID Controller in STEP 7 37

4.1 Task Definition for PID Standard Controller 37

4.2 (S) FB 41 “CONT_C“

4.3 Exercise Example

5. Setting Controlled Systems

5.2 Setting the PI-Controller according to Ziegler-Nichols 55

5.3 Setting the PID Controller according to Chien, Hrones and Reswick 55

5.4 Exercise Example

6. Appendix

B3

Issued: 02/2008 Control Engineering with STEP 7