Mekatronika 5 - Controllers New

MEKATRONIKAMEKATRONIKAOleh :Oleh :

Liman HartawanLiman Hartawan

Jurusan Teknik MesinJurusan Teknik MesinFakultas Teknologi IndustriFakultas Teknologi Industri

INSTITUT TEKNOLOGI NASIONALINSTITUT TEKNOLOGI NASIONAL

ControllersControllersPustaka;Pustaka;

- The Mechatronics Handbook- The Mechatronics Handbook- Introduction to Mechatronics and - Introduction to Mechatronics and

Measurement SystemsMeasurement Systems

Mechatronic System Mechatronic System ComponentsComponents

Control SystemsControl Systems

►Black box which is used to control its Black box which is used to control its output to some particular value or output to some particular value or particular sequence of values.particular sequence of values.

►Two basic form of control system :Two basic form of control system : Open loopOpen loop Closed loopClosed loop

Open Loop SystemsOpen Loop Systems

AdvantageAdvantage► Relatively simpleRelatively simple► Low CostLow Cost►Generally good Generally good

reliabilityreliability

DisadvantageDisadvantage► Inaccurate (no Inaccurate (no

correction for error)correction for error)

Closed Loop SystemsClosed Loop Systems

AdvantageAdvantage► Relatively accurateRelatively accurate

DisadvantageDisadvantage► More complexMore complex► More costlyMore costly► Greater chance of Greater chance of

breakdown (greater breakdown (greater number of components)number of components)

Sequential ControllersSequential Controllers

► It’s used when control are strictly ordered It’s used when control are strictly ordered in a time sequence.in a time sequence. After step 1 is complete then step 2 starts.After step 1 is complete then step 2 starts. When step 2 is complete then step 3 starts, When step 2 is complete then step 3 starts,

etc.etc.►This could be by sets of relaysThis could be by sets of relays

Such mechanical switches are now more Such mechanical switches are now more likely to have been replaced by likely to have been replaced by microprocessormicroprocessor

Such devices behaving like switches which Such devices behaving like switches which are user programmable.are user programmable.

Sequential ControllersSequential Controllers►Washing Machine SystemWashing Machine System

Washing Machine SystemWashing Machine System

StepsSteps► Pre-Wash cyclePre-Wash cycle

Opening valve to fill machine drum to required levelOpening valve to fill machine drum to required level Closing the valveClosing the valve Switching on the drum motor to rotate the drum for a Switching on the drum motor to rotate the drum for a

specific timespecific time Operating the pump to empty the water from the Operating the pump to empty the water from the

drumdrum►Main-Wash cycleMain-Wash cycle► Rinse cycleRinse cycle► SpinningSpinningThe system operating sequence is called a The system operating sequence is called a

program.program.

Microprocessor-based Microprocessor-based controllerscontrollers

►Replacing the mechanical cam-operated Replacing the mechanical cam-operated controllerscontrollers

►Advantage : greater variety of programsAdvantage : greater variety of programs►PLC used for a microprocessor-based PLC used for a microprocessor-based

controller which uses programmable controller which uses programmable memory to store instructions and to memory to store instructions and to implement functions such as ;implement functions such as ; Logic, sequence, timing counting and Logic, sequence, timing counting and

arithmeticarithmeticTo control events.To control events.

Level Leakage Level Leakage ControllerController

OMRON ElectronicsOMRON Electronics

Floatless Level ControllerFloatless Level ControllerAutomatic Water Supply and Automatic Water Supply and

Drainage ControlDrainage Control► Ideal for level control of any Ideal for level control of any

conductive liquidconductive liquid► Both general-purpose and Both general-purpose and

panel-use models availablepanel-use models available► Incorporates an arrester for Incorporates an arrester for

surge and induced lightning surge and induced lightning protectionprotection

► Wide range of models: Long-Wide range of models: Long-distance, high- and low-distance, high- and low-sensitivity, two-wire, etc.sensitivity, two-wire, etc.

► LED indicator for quick LED indicator for quick operation checkoperation check

► Conforms to EMC/IEC standards Conforms to EMC/IEC standards (61F-GP-N/-N8/-GPN-V50)(61F-GP-N/-N8/-GPN-V50)

► UL/CSA approved (61F-GP-N8/-UL/CSA approved (61F-GP-N8/-GPN-V50)GPN-V50)

Operating PrincipleOperating Principle

operate the pumpoperate the pump

In practice, with only two electrodes, ripples on the In practice, with only two electrodes, ripples on the surface of the liquid cause the Controller to jump and surface of the liquid cause the Controller to jump and start, shortening pump (and other equipment) life. This start, shortening pump (and other equipment) life. This problem can be solved by adding another electrode to problem can be solved by adding another electrode to form a self-holding circuit. The additional electrode, E2, form a self-holding circuit. The additional electrode, E2, is connected in parallel with E1, as shownis connected in parallel with E1, as shown

Typical Application ExampleTypical Application Example

Liquid Leakage Liquid Leakage Sensor AmplifierSensor Amplifier

OMRON ElectronicsOMRON Electronics

AC Detection MethodAC Detection Method

Application ExamplesApplication Examples

Sensing BandSensing Band

Sensing BandSensing Band

Sensing BandSensing Band

Programmable Relays Programmable Relays //

Smart RelaysSmart Relays

OMRON ElectronicsOMRON Electronics

ZEN Programmable RelaysZEN Programmable Relays

few examples in automatingfew examples in automatingeveryday facilitieseveryday facilities

Coin-operated Car WashCoin-operated Car Wash

Greenhouse Air Circulator Greenhouse Air Circulator ControlControl

few examples in automatingfew examples in automatingeveryday facilitieseveryday facilities

Testing EquipmentTesting Equipment

few examples in automatingfew examples in automatingeveryday facilitieseveryday facilities

Preventing Assembly OmissionsPreventing Assembly Omissionsand Other Mistakesand Other Mistakes

few examples in automatingfew examples in automatingeveryday facilitieseveryday facilities

Automatic EscalatorAutomatic Escalator

Lighting Pattern ControlLighting Pattern Control

Main FeaturesMain Features

Programming withProgramming withZEN Support SoftwareZEN Support Software

Programmable Logic Programmable Logic ControllerController

(PLC)(PLC)

OMRON ElectronicsOMRON Electronics

Select Units to Control from 10 Select Units to Control from 10 toto

100 I/O Points100 I/O Points

Connection to ProgrammableConnection to ProgrammableTerminalsTerminals

Software & Programming Software & Programming ConsolesConsoles

Programming capacity, Programming capacity, instructions and Execution instructions and Execution

SpeedSpeed

Functions - Input InterruptsFunctions - Input Interrupts

ProgrammingProgramming

Functions - Quick-response Functions - Quick-response InputsInputs

Functions - High-speed Functions - High-speed CounterCounter

Functions - Interval Timer Functions - Interval Timer InterruptsInterrupts

Functions - Analog SettingFunctions - Analog Setting

Functions - Pulse Output Functions - Pulse Output FunctionFunction

Functions - CommunicationsFunctions - Communications

1:1 Links1:1 Links

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