By Hai Lua

Name: buyer experiences journal, November, 2010

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Electropneumatics. Basic Level

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 – creation . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 5
1. 1 functions of pneumatics. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 6
1. 2 simple keep an eye on engineering phrases . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 8
1. three Pneumatic and electropneumatic controllers . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 14
1. four merits of electropneumatic controllers . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 17
Chapter 2 – basics of electric know-how. .. .. .. .. .. .. .. .. .. .. .. . 19
2. 1 Direct present and alternating present . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 20
2. 2 Ohm's legislations. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 22
2. three functionality of a solenoid . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 24
2. four functionality of a capacitor . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 26
2. five functionality of a diode. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 27
2. 6 dimension in electric circuits . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 28
Chapter three – parts and assemblies within the electric sign keep watch over part. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 35
3. 1 strength offer unit . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 36
3. 2 Push button and keep an eye on switches. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 37
3. three Sensors for measuring displacement and strain . .. .. .. .. .. .. .. .. .. .. .. 39
3. four Relays and contactors. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 49
3. five Programmable common sense controllers. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 55
3. 6 total constitution of the sign processing half . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 56
Chapter four – Electrically actuated directional keep an eye on valves. .. .. .. .. .. 59
4. 1 capabilities . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .60
4. 2 development and mode of operation. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 62
4. three forms and pneumatic functionality facts . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .74
4. four functionality info of solenoid coils. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 83
4. five electric connection of solenoid coils . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .86
Chapter five – constructing an electropneumatic regulate procedure. .. .. .. .89
5. 1 technique for constructing a keep an eye on process. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 90
5. 2 undertaking layout method . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .92
5. three pattern software: venture layout of a lifting gadget . .. .. .. .. .. .. .. .. .. .. 96
5. four process for enforcing the keep an eye on method. .. .. .. .. .. .. .. .. .. .. .. .. .. .109
Chapter 6 – Documentation for an electropneumatic regulate method. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .113
6. 1 functionality diagram. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .115
6. 2 functionality chart . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 119
6. three Pneumatic circuit diagram. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 127
6. four electric circuit diagram. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 144
6. five Terminal connection diagram. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .158
Chapter 7 – defense measures for electropneumatic regulate structures. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .169
7. 1 hazards and protecting measures . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .170
7. 2 impact of electrical present at the human physique . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .172
7. three Measures to guard opposed to injuries with electrical present . .. .. .. .. 175
7. four keep an eye on panel and indicating components. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .176
7. five holding electric equipment
against environmental affects. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .181
Chapter eight – Relay regulate platforms . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 185
8. 1 purposes of relay keep watch over platforms in electropneumatics . .. .. .. .. 186
8. 2 Direct and oblique regulate. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 186
8. three good judgment operations . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 189
8. four sign garage . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 192
8. five hold up . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 198
8. 6 series keep an eye on with sign storage
by double solenoid valves . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 199
8. 7 Circuit for comparing keep watch over parts . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 208
8. eight series keep watch over for a lifting equipment . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 211
Chapter nine – layout of modern
electropneumatic regulate structures . .. .. .. .. .. .. .. .. .. .. .. .. .. .. 235
9. 1 tendencies and advancements in electropneumatics. .. .. .. .. .. .. .. .. .. .. .. .. . 236
9. 2 Pneumatic drives. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 237
9. three Sensors . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 245
9. four sign processing . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 246
9. five Directional keep an eye on valves . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 247
9. 6 smooth install options. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 251
9. 7 decreasing tubing attempt . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 261
9. three lowering wiring attempt. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 261
9. nine Proportional pneumatics. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 270
Appendix . .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 279
Index. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 281
Standards. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 291

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Extra resources for Consumer Reports - November 2010

Sample text

Control functions and logical associations are switched by auxiliary contacts. In electropneumatic controllers, electrical currents and power are low. For this reason, they can be implemented with auxiliary contactors. Main or power contactors are not required. 5 Programmable logic controllers Programmable logic controllers (PLCs) are used for processing of signals in binary control systems. The PLC is particularly suitable for binary control systems with numerous input and output signals and requiring complex signal combinations.

When the current is interrupted, the valve switches back and the piston rod retracts. 2 Construction and mode of operation Electrically actuated directional control valves are switched with the aid of solenoids. They can be divided into two groups: „Spring-return valves only remain in the actuated position as long as current flows through the solenoid. „Double solenoid valves retain the last switched position even when no current flows through the solenoid. Initial position In the initial position, all solenoids of an electrically actuated directional control valve are de-energised and the solenoids are inactive.

Fig. 11: Measuring resistance Festo Didactic • TP201 32 Chapter 2 Sources of error Application example Measuring devices cannot measure voltage, current and resistance to any desired degree of accuracy. The measuring device itself influences the circuit it is measuring, and no measuring device can display a value precisely. The permissible display error of a measuring device is given as a percentage of the upper limit of the effective range. 5 % of the upper limit of the effective range. 5 measuring device is used to measure the voltage of a 9 V battery.

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