introduction to electropneumatic

ELECTROPNEUMATIC INTRODUCTION TO

Aditya@poltekom.ac.id

Aditya@poltekom.ac.id

KONTRAK PERKULIAHAN

1. Laporan praktikum pada tiap akhir praktikum

2. Laporan praktikum yang diakui adalah laporan praktikum yang

menggunakan tulisan tangan (handwriting)

3. Laporan praktikum berisikan tentang :

A. Diagram langkah (motion displacement diagram)

B. Electric circuit

C. Pneumatik circuit

D. Component description

4. Tugas paper (makalah) dibebankan kepada mahasiswa yang mendapatkan

nilai D dan E pada UTS dan atau UAS

Definition

• Electropneumatic is a system / tools that is worked using the air pressure / air flow but controlled using electrical devices

Actuator : Pneumatic

Controller : Electric circuit

Comparison

Pneumatic Electric

Complicated

Simple

Control Simplicity

Using > 1 logic valve (many devices)

1 device

Comparison

Pneumatic Electric

Few Many Development

Logic valve Stepper module

Timer valve Counter valve

Timer Counter

Digital logic HMI connection

Fuzzy control SCADA

Comparison

Pneumatic Electric

Slow Fast Signal delivery

Max Max

Comparison

Pneumatic Electric

Cylinders Directional valve Logic valves Button valve Air pressure

Motors, linear motor Transistors/contactors/relays Op amps Button / switch Battery

Pneumatic elements

Single acting cylinders Double acting cylinders Rodless cylinder Pneumatic motor

WORKING ELEMENTS / ACTUATING DEVICES

Single / double acting cylinder

SINGLE ACTING CYLINDER

Forcible surface

Air pressure port / supply port

Pressurized chamber

DEpressurized chamber

Exhaust port / waste port

Spring return

Forcible surface

Air pressure port / supply port

SINGLE ACTING CYLINDER

Forcible surface

Air pressure port / supply port + Exhaust port / waste port

Pressurized chamber

DEpressurized chamber

Spring return

DOUBLE ACTING CYLINDER

Air pressure port / supply port + Exhaust port / waste port

Forcible surface

DOUBLE ACTING CYLINDER

Air pressure port / supply port + Exhaust port / waste port

Air pressure port / supply port + Exhaust port / waste port

CONTROL ELEMENTS / ACTUATING DEVICES

Logic Valves / Directional valves

Two pressure valve

Shuttle valve

M/n valves

M : Number of ports N : Number of direction set / position

Valve nomenclature

Port designation (ISO-5599-3)

Actuation option

Actuation option

Actuation option

Actuation option

Non return valves

Linear actuators

Single acting direct actuating

Double acting direct actuating

Component designation

Component designation

System circuit diagram

Solenoid principles (supply power)

Solenoid principles (Coil & core)

When an electric current flows through a coil, a magnetic field is generated. The following applies to strengthen the magnetic field: � 1. Increasing the number of windings (1loop, 2 loop, 3 loop, etc) � 2. Increasing the strength of the current (1 A, 2A, etc) The following applies to the weaken the magnetic field: � 1. Lengthening the coil reduces the field. (the soft iron core length)

Electropneumatic elements

Solenoid valves PE converter (Pneumatic to Electric signal converter) Magnetic proximity switch

Solenoid valves NO

n/n valves

Solenoid valves NC

n/n valves

Piloted solenoid valves

n/n valves

Piloted solenoid valves zoom

n/n valves

Solenoid valves 5/n piloted

n/n valves

Solenoid valves 5/n double solenoid piloted

n/n valves

PE Converter

n/n valves

Magnetic proximity switch

Magnetic proximity switch

Move cylinder

Electronic elements

Switches Relays

Switches

Relays