Industrial Automation.ppt12

8/4/2019 Industrial Automation.ppt12

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IndustrialAutomation

WELCOME

TOSolwins Technologies, Bhilai


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Automation is the use ofcontrol systems (suchas numerical control, programmable logic

control, and other industrial control systems),

in concert with other applications of

information technology (such as computer-

aided technologies [CAD, CAM, CAX]), to

control industrial machinery and processes,

reducing the need for human intervention.[1]


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The main advantage of automation are:

Replacing human operators in tedious tasks.

Replacing humans in tasks that should be done in dangerousenvironments (i.e. fire, space, volcanoes, nuclear facilities, underthe water, etc)

Making tasks that are beyond the human capabilities such ashandling too heavy loads, too large objects, too hot or too coldsubstances or the requirement to make things too fast or too slow.

Economy improvement. Sometimes and some kinds of automationimplies improves in economy of enterprises, society or most ofhumankind. For example, when an enterprise that has invested in

automation technology recovers its investment; when a state orcountry increases its income due to automation like Germany orJapan in the XX Century or when the humankind can use theinternet which in turn use satellites and other automated engines


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What is a PLC?

Picture Source: RSView32 Automotive Demo


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(PLC)

Programmable Logic Controllers (PLC)


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PLC Presentation Contents

Introduction

What is a PLC

PLC Types

Choosing PLC Hardware

PLC Applications

Programming PLCs

Advantages of PLCs

Questions


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Traditional PLC Concept

PLC performs relay equivalent functions

PLC performs ON/OFF control

Ladder diagram programming Designed for industrial environment

Source:A-Bs Micro Solutions Presentation


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TerminalBlock

1

2

3

4

5

6

7

8

9

Input Devices

L1

L1

L2

10

COM

PL

C

IsolationBarrier

Input Wiring: PLC input is the load in the

circuit, sensing if voltage is present


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OUT1

Output Devices

L2

L2

L1

OUT1

OUT2

OUT2

OUT3

OUT3

OUT4

OUT4OUT5

OUT5

OUT6

OUT6

CR

L1PL

C

TerminalBlockIsolationBarrier

OutputWiring: PLC output is the switch,

controlling current flow to load


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Output Devices

Valves

Motor Starters

Solenoids

Control Relays

Alarms

Lights

Fans

Horns

Relays

120 VAC/VDC

240 VAC

24 VAC/VDC

Triac

120/230 VAC

T

ransistor MOSFET

24 VDC


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Inside a PLC

CR

IsolationBarrier

IsolationBarrier

MEMORY

program data

HighVoltage

HighVoltage

Low Voltage

AC Power Supply85-264 VAC,50/60Hz

O

u

t

p

u

t

C

i

r

c

u

it

s

ExternalDC Power Supplyor

Communications

I

n

p

u

t

C

i

r

c

u

it

s

Central

Processor


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Most Basic of PLC SystemsIn the most basic of PLC systems, a self contained

(shoe box) PLC has 2 terminal blocks, one for

Inputs and one for Outputs

Today, most PLCs in this category are know as

Micros. Typically they provide front panel LEDstatus indication of I/O and Processor states

Programmable

Controller

Inputs Outputs

C

R


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Modular Chassis Based PLCs

The vast majority of PLCs installed today are

modular chassis based systems consisting of:

1. Processor Module (CPU)

2. Input & Output Modules

3. Chassis

4. Power Supply


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PLC Application Considerations Inputs/Outputs

Type,

AC, DC, sourcing, sinking,

etc.

Number of

10, 16, 20, 32, 156

Memory

Type

Flash or Battery backed

Size 1k, 6k, 12k, 16k, 64k

Functions required Instruction set

Messaging

PID

PTO, PWM Arithmetic

Communications

DeviceNet, Ethernet

Remote I/O, DH+ Report generation


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SOURCING vs. SINKING

+VDC

SOURCING Pushbutton(PNP)

SINKING Pushbutton(NPN)

DC

PowerSupply

+

- DC COM

DC

Power

Supply

+

-


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SOURCING vs. SINKING DC Inputs

DC

Power

Supply

FieldDevice

DC

Input

Module

+

- DC COM

IN1

DC

Input

Module

FieldDevice

DC

Power

Supply

+

-

+VDC

IN1

SOURCING

(PNP)

SINKING

(NPN)


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Logical AND Construction

IF input 4 AND input 5 have power

THEN energize output 0

||I/4

||I/5

( )O/0

Logical Continuity

T T T

On


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Logical OR Construction

IF input 4 OR input 5 have power

THEN energize output 0

||I/4

||I/5

( )O/0

Logical Continuity

F

T

On

||I/4

||I/5

( )O/0

Logical Continuity

T

F

On


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Basic PLC Advantages

Ease of programming

Ease of maintenance

Designed for industrial environment

Quick installation

Adaptable to change

Source:A-Bs Micro Solutions Presentation


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Advantages over Relays

All the capabilities of the earlier systems

Dramatic performance increase over the relay

logic systems

Greater reliability

Little maintenance due to no moving parts

No special programming skills required by

maintenance personnel

Physical size of the PLC system is much smaller

than the conventional relay based logic

And most importantly much lower costSource:[email protected]


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VVVF Drives Variable frequency drivesDCS - Distributed Control System

HMI - Human Machine Interface

SCADA - Supervisory Control and Data Acquisition

PLC - Programmable Logic ControllerPAC - Programmable Automation Controller

Instrumentation - Instrumentation


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Installed and Running Systems in RI- Conveyors

- Curtain rods- Deodorants

- Donuts

- Duplex Receptacles

- Fibers

- Filters

- Forged Parts- Glass

- Goggles

- Grinding and Polishing

- Heat Treating Metal Products

- Jails- Lenses

- Nails

- Natural Gas

- Paper

- Pharmaceuticals

- Plastics- Plating

- Plating Machines

- Power Generation

- Power Supplies

- Product Assembly Machines- Rubber products

- Seafood Processing

- Soda

- Staples

- Warehouse Automation- Waste Water Systems

- Drinking Water Systems

- Water Heaters

- Web Handling (paper/plastic)

- Wire / Cable


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Industrial Automation.ppt12

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