electropneumatics transparencies

8/13/2019 Electropneumatics Transparencies

1/42

Festo Didactic GmbH & Co. TP 201, 01Transparency

Elements of a Control Chain

Electrics/Electronics

Power contactors

Power transistors

Power thyristors

Switches

Push button actuatorsLimit switches

Program module

Sensors

Indicators/generators

Contactors

Relays

Electronic modules

Electric motors

SolenoidsLinear motors

Pneumatics/Hydraulics

Directional

control valves

Directional

control valves

Isolating valves

Pressure valves

Working elements

Control elements

Processingelements

(Control elements)

Input elements

Cylinders

MotorsComponents

Switches

Push buttonactuators

Limit switches

Program

module

Sensors


2/42

Festo Didactic GmbH & Co.

Single-Acting Cylinder


3/42


Double-Acting Cylinder


4/42

Festo Didactic GmbH & Co. TP 201,Transparency 04

Non-return, Flow Control and Pressure Control Valves

Non-return valves

Flow control valve

Pressure control

valve

Non-return valve (check valve)

Flow control valve (throttle valve),adjustable

Non-return valve, spring-loaded

Shuttle valve (OR function)

Quick exhaust valve

One-way flow control valve

12

3

Adjustable pressure regulating valvewithout relief port

Adjustable pressure regulating valvewith relief port

Pressure sequence valvewith external supply line

Pressure-relief valve

2

2

2

2

1

1

1

1

Pressure sequencevalve-combination

3

12

2

1

Dual pressure valve (AND function)


5/42

P1


Pressure Regulating Valve

1

3

2

P1 P2


6/42


One-Way Flow Control Valve

1Y1

1V2

1V1


7/42


Quick Exhaust Valve

2

3

2

1Y11 3

1A

1

1V2

1V1 1V1

1Y2

2

1

3

2

1

3


8/42


Conversion of Electrical Signals into Pneumatic S

unactuated actuated

33

11

22


9/42


Conversion of Pneumatic Signals into Electrica

1414

unactuatedactuated


10/42


Switching Symbols for Valves

The valve switching position is shown by a square.

The number of squares corresponds to the number of switching position

Lines indicate the flow paths, arrows indicate the direction of flow.

Closed ports are shown by two lines drawn at right angles to one anothe

The connecting lines for supply and exhaust air are drawn outside the sq


11/42

Directional Control Valves:Ports and Switching Positions

2/2-way valve, normally open position

4/2-way valveflow from 1 2 and from 4 3

5/2-way valveflow from 1 2 and from 4 5

5/3-way valve, mid-position closed

3/2-way valve, normally closed position

3/2-way valve, normally open position

Number of switching positions

Number of ports

4

4

4

2

2

2

2

2

2

3

3

3

3

3

1

1

1

1

1

1

5

5

Festo Didactic GmbH & Co. TP 201,Transparency 11


12/42


Function Principle of a Solenoid Coil

Coil winding

Soft iron core


13/42


2/2-Way Solenoid Valve without Pilot Contr

1 12 2


14/42


15/42


3/2-Way Single Solenoid Valve with Pilot Co

33

11

22


16/42


5/2-Way Single Solenoid Valve with Pilot Co

14

14

3

3

2

2

1

1

4

4

5

5

84

84

14

14


17/42


5/2-Way Double Solenoid Valve with Pilot Co

14

14

3214584 82

14 12

3214584 82

14 12


18/42


14

14

5/3-Way Solenoid Valve

14

3

3

3

2

2

2

1

1

1

4

4

4

5

5

5

84

84

84

82

82

82

14

14

14

12

12

12


19/42


Power Supply Units

Transformer StabilizeRectifier

Power supply unit

Alternating current Direct current


20/42


Switching Contacts and Types of Actuatio

Normally-opencontacts

Changeoverswitch

Mechanicontacts

Rotary switch withnormally open contactsmanually actuatedby turning

Push-button withnormally open contactsmanually actuatedby pushing

Limit swior normamechanic

Normally-closedcontacts


21/42


Types of Actuation of Switching Elements

3

4 4

3

Connection(normally-closed co

Connection(normally-open con

Switching element

Type of actuation(push-button)


22/42


Switching Symbols for Solenoid Coils and Re

Electro-magneticallyactuated on both sides

Electro-magneticallyactuated,with pilot control

Contactor or relay with3 normally open contactsand 1 normally closed contac

Electro-magneticallyactuated on one side,with spring return


23/42


The Relay

Coil core

Insulation

Contact

Return spring

Relay coil

Armature

124A1 A2


24/42


25/42

Signalling device

Motors


Electrical Output Devices

Audible indicator:

Illuminatingindicators:

Horn

DC motor

Lamp Light emitting diode (

Siren

M


26/42


27/42


The OR Logic Function

Input 2

Input 1

+24V

0V

H1

S1 S2

1 2


28/42


Control Chain

+24V

0V

S1

S2

K1K1

1Y1

2

1 2

4

5

2

1Y1

31

1A

1V1


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Direct Actuation of a Single-Acting Cylinde

1Y1

2

1Y1

1A

1V1

+24V

0V

S1

1 3


30/42


Indirect Actuation of a Double-Acting Cylind

1A+24V

0V

S1

1

4

5

2

1Y1

31

1V1


31/42


Electrical Memory Circuit Dominant Set

+24V

0V

S1

S2

K1 K1

K1 H1

23

1 2 3

13 23

14 24


32/42


Electrical Memory Circuit Dominant Res

+24V

0V

S1

S2

K1 K1

23

1 2 3

13 23

14 24

K1 H1


33/42


Electropneumatic Memory Circuit with Double Sole

1A 1S2

4

5

2

1Y1 1Y2

31

1V1

1Y1

+24V

0V

S1

1 2

1S2 K

K1 K2

3 4


34/42


Stroke-Dependent Control

1A 1S21S1

4

5

2

1Y1 1Y2

31

1V1

1Y1

+24V

0V

S1

1S1

1 2

1S2 K

K1 K2

3 4


35/42


Pressure-Dependent Control

1A

4

5

2

p

1Y1

1B1

1Y2

31

1V1

+24V

0V

S1

1

K1

5 6

1B2

1B2 1B1

p

2 43 5

K2 K3


36/42


The Electropneumatic Circuit Diagram

44

55

22

2Y11Y1

3311

2A1A

2V11V1

2S21B21B1

2S1

+24V

0V

Start 2S1

K6

1B1 1B2

1 3 5 6 8 10 117 92 4

2S2K3 K4 K5 K2

K1

K3 K4 K5

K1 K2 K3 K4 K5 K6

5 7 67

12

89

13

1011

13 5


37/42


Circuit Diagram Structure

1A

1V2

0Z

1S2

4

5

2

1Y1 1Y2

31

1V1

+24V

0V

S1

K2

1 2

1S2

K1 K2

3


38/42


Displacement-Step Diagram

1

0

1

0

1

Step

2 3 4 5=1

1A

2A


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Terminal Connection Diagram

X1-1 X1-2

3 1

11 11

21

4 2

14 14

24

X1-3 X1-4

X1-9 X1-12 X1-14

1Y1

4

-

3

+24V

Componen

t

co

de

Connec

tion

co

de

J u m p e r

Targe

t

0V

1B1 +

1B1

1S2

1B1

1S2

1Y1

S1

1S1

2

Machine

4

5

2

1Y1

31

1A

1V1

1S21B1

1Y1

+24V

0V

S1 1S21B1

1 3 4 52

K1 K2

K2

K1 K2

3 45

X1-11

X1-16

X1-10

A1 A1

A2 A2

X1-5 X1-8X1-6 X1-7

X1-13 X1-15

X1-17


40/42


Checklist for the Terminal Connection Diagr

Each current path must be connectedto the positive +24 V rail via a terminal.

Each current path must be connected

to the negative 0 V rail via a terminal.

External components, such as switches,sensors and solenoids are eachconnected via one terminal per unit.

Identify the connection point for +24 V

and 0 V in the wiring diagram.

Enter all external cdesignation of the terminal connectio

Systematically che

and complete the w

Not all of the conneentered in the wirin(e.g. relay connect

Note:


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Protective Circuits for Inductive Loads

I1 I =1

I = IM 1 I = 0D

+24V +24V0V 0V


42/42

Alterable Controls

S1

Switch

Signalinput

Signaloutput

Signal processing

Relays Contacts

S2

S3

S4

K1

K2

K3

K4

H1

H2

K1 K2

K3 K4

+ -

+ -

S1Program:

WHEN

THENOTHERWISE

WHEN

THENOTHERWISE

E0.1

E0.2

A0.1A0.1

E0.3

E0.4

A0.2

A0.2

RESET

RESET

AND

SET

AND

SET

S2

S3

S4

E1

E2

E3

E4Processor

H1

H2

A1

A2

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