Язык английский. В учебнике приведены терминология, основные понятия, графическое обозначение элементов электропневмоавтоматики, рассматриваются конструкция, принцип действия и методика расчета электрических преобразователей сигналов и датчиков сигналов.

Описаны конструкции и даны характеристики электропневмораспределителей, свободно программируемых контроллеров и исполнительных устройств систем электропневмоавтоматики. Изложены рекомендации по выбору, расчету и проектированию электропневматических систем управления технологическим оборудованием. Даны численные примеры расчета основных элементов.


Оглавление
Contents ............................................................................................ 1

Preface ............................................................................................ 4

Chapter 1 – Introduction ...................................................................... 5

1.1 Applications of pneumatics............................................................... 6

1.2 Basic control engineering terms ....................................................... 8

1.3 Pneumatic and electropneumatic controllers ................................. 14

1.4 Advantages of electropneumatic controllers .................................. 17

Chapter 2 – Fundamentals of electrical technology........................ 19

2.1 Direct current and alternating current ............................................. 20

2.2 Ohm's Law...................................................................................... 22

2.3 Function of a solenoid .................................................................... 24

2.4 Function of a capacitor ................................................................... 26

2.5 Function of a diode......................................................................... 27

2.6 Measurement in electrical circuits .................................................. 28

Chapter 3 – Components and assemblies in the electrical signal control section.................................... 35

3.1 Power supply unit ........................................................................... 36

3.2 Push button and control switches................................................... 37

3.3 Sensors for measuring displacement and pressure ....................... 39

3.4 Relays and contactors.................................................................... 49

3.5 Programmable logic controllers...................................................... 55

3.6 Overall structure of the signal processing part ............................... 56

Chapter 4 – Electrically actuated directional control valves...........59

4.1 Functions ........................................................................................60

4.2 Construction and mode of operation...............................................62

4.3 Types and pneumatic performance data ........................................74

4.4 Performance data of solenoid coils.................................................83

4.5 Electrical connection of solenoid coils ............................................86

Chapter 5 – Developing an electropneumatic control system........89

5.1 Procedure for developing a control system.....................................90

5.2 Project design procedure ................................................................92

5.3 Sample application: project design of a lifting device .....................96

5.4 Procedure for implementing the control system............................109

Chapter 6 – Documentation for an electropneumatic control system................................113

6.1 Function diagram..........................................................................115

6.2 Function chart ...............................................................................119

6.3 Pneumatic circuit diagram.............................................................127

6.4 Electrical circuit diagram...............................................................144

6.5 Terminal connection diagram........................................................158

Chapter 7 – Safety measures for electropneumatic control systems..............................169

7.1 Dangers and protective measures ................................................170

7.2 Effect of electric current on the human body ................................172

7.3 Measures to protect against accidents with electric current .........175

7.4 Control panel and indicating elements..........................................176

7.5 Protecting electrical equipment

against environmental influences..................................................181

Chapter 8 – Relay control systems ................................................. 185

8.1 Applications of relay control systems in electropneumatics ......... 186

8.2 Direct and indirect control............................................................. 186

8.3 Logic operations ........................................................................... 189

8.4 Signal storage .............................................................................. 192

8.5 Delay ............................................................................................ 198

8.6 Sequence control with signal storage

by double solenoid valves ............................................................ 199

8.7 Circuit for evaluating control elements ......................................... 208

8.8 Sequence control for a lifting device ............................................ 211

Chapter 9 – Design of modern

electropneumatic control systems ............................. 235

9.1 Trends and developments in electropneumatics.......................... 236

9.2 Pneumatic drives.......................................................................... 237

9.3 Sensors ........................................................................................ 245

9.4 Signal processing ......................................................................... 246

9.5 Directional control valves ............................................................. 247

9.6 Modern installation concepts........................................................ 251

9.7 Reducing tubing effort .................................................................. 261

9.3 Reducing wiring effort................................................................... 261

9.9 Proportional pneumatics............................................................... 270

Appendix ........................................................................................ 279

Index.................................................................................................... 281

Standards............................................................................................ 291



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