Basic PLC Part I -Introduction to PLC

Post on 15-Feb-2016

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Basic PLC Part I -Introduction to PLC

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Welcome to

PLC And CX-Programmer Training

Course Contents

•Introduction of PLC

•System Configuration

•Features & Function

•Unit Specification

•Basic Command with Basic Programming method.

•Exercise With Application

Introduction: Control System-Control Panel

Start & StopOperation

What is inside the control panel?

Contactors, relays, timers & countersin the control panel

Control System: Control System: InputInput

Flow Rate

Float Level

Oxygen Level

Control System:Control System:OutputOutput

Motor pump

Valve

Mixer

Conventional Hardwire Logic

Hardwire logic control circuit

Relay 1StartStart StopStop

Relay 1

PumpTimer

TimerRelay 1 Solenoid

Conventional Relay Control Panel

A solid-state device used to control machine or process operation by means of a stored program and feedback from input and output devices.

Introduction to Omron CQM1 PLCIntroduction to Omron CQM1 PLC

What PLC can do?What PLC can do?Sequence ControlSequence Control

Relay 1StartStart StopStop

Relay 1

PumpTimer

TimerRelay 1 Solenoid

Relays

Timers & Counters

Sophisticated ControlSophisticated Control

+-x/

21

3 45

Prod Pass RejectAA 33 4BB 27 3CC 43 8

Arithmetic Operation

Analog ControlInformation Handling

Supervisory Control

PLC

Computer

PrinterFA

Network

Process Monitoring

Pager

PLCPLC HardwireHardwireLogicLogic

Control DeviceControl Device

Specific Purpose

General Purpose

Wired LogicWired Logic PLCPLC

Control sequence isControl sequence isfixed for one designfixed for one design

Control sequence can beControl sequence can bechanged from time to timechanged from time to time

without rewirewithout rewire

PLCPLC

Control ScaleControl ScaleSmall & Medium Medium & Large

Wired LogicWired Logic

Relay 1

StartStart StopStop

Relay 1

PumpTimer

TimerRelay 1 Solenoid

LD STARTOR RELAY 1AND NOT STOPOUT RELAY1OUT SOLENOIDLD RELAY 1TIM 000

#0020LD TIM 000OUT PUMP

Modification Modification The same example for PLC control system

The same example for PLC control system

Only need to change the ladder program

Relay 1

StartStart StopStop

Relay 1

PumpCounter

SolenoidRelay 1

Counter#30

StopStop

LD STARTOR RELAY 1AND NOT STOPOUT RELAY1OUT SOLENOIDLD RELAY 1LD STOPCNT 000

#0030LD CNT 000OUT PUMP

Modification Modification

Wired LogicWired Logic PLCPLC

Delivery PeriodSeveral days Almost Immediate

MaintenanceMaintenanceDifficult Easy

LED indicator

Wired LogicWired Logic PLCPLC

Input/output connectorcan be remove easily

without using screw driver

ProgrammingConsole

Economic EfficiencyAdvantage on

small scaleAdvantage onsmall, medium

and large

$$$$$$Wired LogicWired Logic PLCPLC

Power ConsumptionPower Consumption

High Low

0.2 Amp> 2 Amp

Wired LogicWired Logic PLCPLC

•Fast project implementation time•Low operating cost•Increase productivity•Reliability•Easy maintenance

ConclusionConclusion

Applications Of PLC

Material Handling Packaging Machine Pump Control Water Treatment Paper & Pulp

Industries Cement

Manufacturing Electroplating

Plants

Power Plant Disk Drive

Manufacturing Traffic Light System Car Manufacturing Building Automation IC Manufacturing Amusement Park

Control