Siemens Module B3 manual Table of Contents

		Automation and Drives - SCE
Table of Contents
		PAGE
1. Preface		5
2. Fundamentals of Control Engineering		7
2.2	Components of a Control Loop	8
2.3. Characteristics		11
2.4	Step Function for Examining Controlled Systems	12
2.5. Self-Regulating Processes		13
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	18
2.7.1 Two Position Controllers		18
2.7.2 Three Position Controllers		20
2.7.3 Basic Types of Continuous Controllers		21
2.8	Objectives for Controller Adjustment	27
2.9	Digital Controllers	29
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“	39
4.3	Exercise Example	40
5. Setting Controlled Systems		54
5.1	General	54
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	57
6. Appendix		60

T I A Training Document	Page 3 of 64	Module
		B3
Issued: 02/2008		Control Engineering with STEP 7