nota pneumatic

7/27/2019 nota pneumatic

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ELECTROPNEUMATICS

Prepared by : Miss Taj Nesha


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OBJECTIVES To identify the functions of each components exist in electro

pneumatic circuit.

To familiarize with standard symbols to design an electro pneumaticcircuit.

Redesigning electro pneumatic circuit for sequence of multiplecontrol cylinder.

Design the basic circuit for numerous cylinder based on electro-pneumatic control:

a. Method of electrical diagram (Europe) or/and

b. Association diagram (America)

Controlled system of pneumatic and computer assisted electropneumatic:

a. Design and simulation

Identify the necessity of safety in circuit.


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Pneumatics is a method to transfer energy from one point to

another using actuators which which are driven by fluids

under pressure. Pneumatics restricts itself to gaseous fluidswhile hyraulics uses liquids to transfer the energy.

The transferring of energy in pneumatics such as pumping

air into a pneumatic cylinder must be controlled. You cancontrol the pressure by manually opening a valve,

automaticall by detecting its pressure, or by sending an

electrical signal. The control of pneumatic components by

electrical impulses is known as electropneumatics. This

science is fast expanding as it can make use of all electronic

developments such as PLCs and PCs. However

electropneumatics has restrictions as it cannot be used in

places where electricity cannot be used such as gas

factories,etc.


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4 Methods Of Valve Actuation


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Kaedah Elektrikal @ Elektro

1. Relay/ Coil / Geganti


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SOLENOID

A solenoid is a coil wound into a tightly packed helix. In

physics, the term solenoid refers to a long, thin loop of

wire, often wrapped around a metallic core, which

produces a magnetic field when an electric current is

passed through it. operating principles are also used.
http://en.wikipedia.org/wiki/Coilhttp://en.wikipedia.org/wiki/Helixhttp://en.wikipedia.org/wiki/Physicshttp://en.wikipedia.org/wiki/Metalhttp://en.wikipedia.org/wiki/Magnetic_fieldhttp://en.wikipedia.org/wiki/Electric_currenthttp://en.wikipedia.org/wiki/Electric_currenthttp://en.wikipedia.org/wiki/Magnetic_fieldhttp://en.wikipedia.org/wiki/Metalhttp://en.wikipedia.org/wiki/Physicshttp://en.wikipedia.org/wiki/Helixhttp://en.wikipedia.org/wiki/Coil


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RELAY

A relay is an electrically operated switch. Many relays use an

electromagnet to operate a switching mechanism

mechanically.
http://en.wikipedia.org/wiki/Electrichttp://en.wikipedia.org/wiki/Switchhttp://en.wikipedia.org/wiki/Electromagnethttp://en.wikipedia.org/wiki/Electromagnethttp://en.wikipedia.org/wiki/Switchhttp://en.wikipedia.org/wiki/Electric


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Symbols

DOUBLE SOLENOID

SINGLE SOLENOID


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PNEUMATICS ELECTROPNEUMATIC

CIRCUIT (EP-C)

A+SOLENOID

A+

RELAYR1

ROLLER LEVER

PUSH BUTTON


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Standard symbolsKomponen Simbol dalam Litar Elektro Simbol dalam Ladder

A1

A2

C1

K1 K1

Push

Button

Switch /

Relay

switch

Coil /

Relay


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Komponen Simbol dalam Litar Elektro Simbol dalam Ladder

A+ A+

A0

A0

Solenoid

Valve

Limit

Switch


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SINGLE SOLENOID CIRCUIT

DIRECT CIRCUIT ( EP-C & LADDER DIAGRAM)

INDIRECT CIRCUIT - ( EP-C & LADDER DIAGRAM)


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DOUBLE SOLENOID CIRCUIT

DIRECT CIRCUIT ( EP-C & LADDER DIAGRAM)

INDIRECT CIRCUIT - ( EP-C & LADDER DIAGRAM)


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Exercise 1 Single Solenoid

EC

LD


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Exercise 2 - ORLD

EC


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Exercise 3 - AND

EC

LD

i bl l id


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Exercise 4 Double Solenoid

EC

LD


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Exercise 5 Double Solenoid with LS (A1)

EC

LD


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Exercise 6 Double Solenoid with 2 LS (A0& A1)

EC


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Exercise 7 2 cylinder with 4 LS (A0,A1,B0 & B1)

A+ B+ A- B-

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