Electropneumatics. Basic Level

Description

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.ОглавлениеContents ............................................................................................ 1Preface ............................................................................................ 4Chapter 1 – Introduction ...................................................................... 51.1 Applications of pneumatics............................................................... 61.2 Basic control engineering terms ....................................................... 81.3 Pneumatic and electropneumatic controllers ................................. 141.4 Advantages of electropneumatic controllers .................................. 17Chapter 2 – Fundamentals of electrical technology........................ 192.1 Direct current and alternating current ............................................. 202.2 Ohm's Law...................................................................................... 222.3 Function of a solenoid .................................................................... 242.4 Function of a capacitor ................................................................... 262.5 Function of a diode......................................................................... 272.6 Measurement in electrical circuits .................................................. 28Chapter 3 – Components and assemblies in the electrical signal control section.................................... 353.1 Power supply unit ........................................................................... 363.2 Push button and control switches................................................... 373.3 Sensors for measuring displacement and pressure ....................... 393.4 Relays and contactors.................................................................... 493.5 Programmable logic controllers...................................................... 553.6 Overall structure of the signal processing part ............................... 56Chapter 4 – Electrically actuated directional control valves...........594.1 Functions ........................................................................................604.2 Construction and mode of operation...............................................624.3 Types and pneumatic performance data ........................................744.4 Performance data of solenoid coils.................................................834.5 Electrical connection of solenoid coils ............................................86Chapter 5 – Developing an electropneumatic control system........895.1 Procedure for developing a control system.....................................905.2 Project design procedure ................................................................925.3 Sample application: project design of a lifting device .....................965.4 Procedure for implementing the control system............................109Chapter 6 – Documentation for an electropneumatic control system................................1136.1 Function diagram..........................................................................1156.2 Function chart ...............................................................................1196.3 Pneumatic circuit diagram.............................................................1276.4 Electrical circuit diagram...............................................................1446.5 Terminal connection diagram........................................................158Chapter 7 – Safety measures for electropneumatic control systems..............................1697.1 Dangers and protective measures ................................................1707.2 Effect of electric current on the human body ................................1727.3 Measures to protect against accidents with electric current .........1757.4 Control panel and indicating elements..........................................1767.5 Protecting electrical equipmentagainst environmental influences..................................................181Chapter 8 – Relay control systems ................................................. 1858.1 Applications of relay control systems in electropneumatics ......... 1868.2 Direct and indirect control............................................................. 1868.3 Logic operations ........................................................................... 1898.4 Signal storage .............................................................................. 1928.5 Delay ............................................................................................ 1988.6 Sequence control with signal storageby double solenoid valves ............................................................ 1998.7 Circuit for evaluating control elements ......................................... 2088.8 Sequence control for a lifting device ............................................ 211Chapter 9 – Design of modernelectropneumatic control systems ............................. 2359.1 Trends and developments in electropneumatics.......................... 2369.2 Pneumatic drives.......................................................................... 2379.3 Sensors ........................................................................................ 2459.4 Signal processing ......................................................................... 2469.5 Directional control valves ............................................................. 2479.6 Modern installation concepts........................................................ 2519.7 Reducing tubing effort .................................................................. 2619.3 Reducing wiring effort................................................................... 2619.9 Proportional pneumatics............................................................... 270Appendix ........................................................................................ 279Index.................................................................................................... 281Standards............................................................................................ 291 Скриншот