Electromecanica

G. Prede

D. Scholz

Electropneumatics
Basic Level

Order no.
Description
Designation
Edition
Graphics
Editors
Authors
Translation
Layout

091181
E.PNEUM.GS.LBH.
D.LB-TP201-GB
01/2002
D. Schwarzenberger
Dr. F. Ebel
G. Prede, D. Scholz
Williams Konzept & Text
OCKER Ingenieurbüro

© Copyright by Festo Didactic GmbH & Co., D-73770 Denkendorf 2002
The copying,distribution and utilization of this document as well as the
communication of its contents to others without expressed authorization
is prohibited. Offenders will be held liable for the payment of damages.
All rights reserved, in particular the right to carry out patent, utility model
or ornamental design registrations.
Parts of this training documentation may be duplicated, solely for trainingpurposes, by persons authorised in this sense.

TP201 • Festo Didactic

1
Contents

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 – Fundamentalsof 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 logiccontrollers...................................................... 55
3.6 Overall structure of the signal processing part ............................... 56

Festo Didactic • TP201

2
Contents

Chapter 4 – Electrically actuated directional control valves ...........59
4.1 Functions ........................................................................................60
4.2 Construction and mode ofoperation...............................................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 Procedurefor 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...