Automation

WITH PLC / SCADA

Name - Ayush GautamCollege - JECRC

AUTOMATION

It is delegation of human control functions to technical equipments for increasing productivity , quality and increase the safety in working condition.

Automation plays an important role in global economy and daily experience.

What Is Automation :

Types of AutomationTypes of Automation Applications

1.Home Automation Air Conditioner, Geyser, Washing

machine etc.

2.Office Automation FAX, Printers etc.

3.Building Automation Automatic Car Parking, Elevator

etc.

4.Industrial Automation Automation in whole plant.

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TOOLS OF AUTOMATION :

PLC ( Programmable logic controller)

SCADA (Supervisory control and data acquisition)

HMI( Human machine interface)

DCS (distributed control system)

IMPACT OF AUTOMATION :Replacing human in tasks done in dangerous environment.

It increase production and speed up the development process.

Performing tasks that are beyond human capabilities of size , weight, speed .

Economy improvement.

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Programmable Logic Controllers(PLC)

WHAT IS PLC :PLC ( Programmable logic controllers)

PLC is an electronic device which interface between input and output with using software.

It is an example of real time system.

It is microprocessor based industrial computer that perform discrete or sequential logic

PLC HISTORY : IN 1968 , a group of engineers from general motors developed the concept of plc

MODICON is the first plc.

DICK MORLEY, who worked in MODICON is considered to be the “ father “ of the plc.

PLC’S were designed to replace relay logic system.

LEADING BRANDS OF PLC :AMERICAN : 1 – ALLEN BRADLEY 2 - TEXAS INSTRUMENTS 3 - GENERAL ELECTRIC 4- GOULD MODICUM

EUROPEAN: 1 – SIEMENS 2 – KLOCNER AND MOULLER 3- FESTO

JAPANESE : 1 - TOSHIBA 2-MITSUBISHI 3- OMRON

INDIA: 1- MESSUNG 2 DELTA

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Major Components of a Common PLC

CPU/

POWERSUPPLY

I MN O P D U UT L E

O M U OT DP UU LT E

PROGRAMMING DEVICE

From SENSORS

Pushbuttons,contacts,

limit switches,etc.

ToOUTPUT

Solenoids, contactors,

alarmsetc.

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Input Modules Act as interface between real-time

status of process variable and the CPU.

Switches pushbuttons Relays sensorsRTD (Ohm) Thermocouple

Central Processing UnitMade of a microprocessor & a memory

systemReads the input, executes logic, performs

calculations & controls the outputs accordingly

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Application Memory

Program Files – user program, subroutines

Data Files – I/O status, counter, timer, variables

Output Modules

• Act as link between the CPU and the output devices in the field.

Control Valve Motor Solenoid Valves lamps

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PLC

INPUTS

OUTPUTS

MOTOR

LAMPCONTACTOR

PUSHBUTTONS

Examples of PLC Programming Software:

1. Allen-Bradley - Rockwell Software

RSLogix500 2. Modicon - Modsoft3. Omron - Syswin4. GE-Fanuc Series 6 – LogicMaster65. Square D- PowerLogic6. Texas Instruments – Simatic6. Telemecanique – Modicon TSX Micro

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PLC SIZE :

1. SMALL - it covers units with up to 128 I/O’s and memories up to 2 Kbytes.

2. MEDIUM - have up to 2048 I/O’s and memories up to 32 Kbytes.

3. LARGE - They have up to 8192 I/O’s and memories up to 750 Kbytes.- can control individual production processes or entire plant.

Ladder Logic:.LADDER LOGIC is the oldest programming

language of plc.

Ladder language is basically a symbolic set of instructions used to create the controller prog.

Represents how electrical current flows through the devices to complete an electrical circuit

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L1 L2PB1 Stop PB2

Start

M1 M1

Motor

Power Bus

Power Bus

Auxiliary Holding Contact

Rung

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INPUT SYMBOL

Normally Open(NO)

Normally Closed(NC)

Power flows through these contacts when they are closed. The normally open (NO) is true when the input or output status bit controlling the contact is 1.The normally closed (NC) is true when the input or output status bit controlling the contact is 0.

OUTPUT SYMBOL:

TOOLS FOR LADDER PROGRAMMINGBit InstructionsTimersCountersCompare BlockMathematical Operators

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Supervisory Control and Data Acquisition(SCADA)

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WHAT IS SCADA:SCADA : SUPERVISORY

CONTROL AND DATA ACQUISITION SCADA is a type of industrial control system used to collect

data from remote location for exercising control.

S: Supervisory (we can see process on the monitor) operator/s, supervisor/s . C: Control (when setup is complete we can also control the process) A: And D: Data ( save data and reports of present and past state ) A: Acquisition

SCADA stands for supervisory control and data acquisition. As the name indicates it is not a full control system, but rather focuses on the supervisory level

A SCADA program normally runs on a PC and communicates with external instrumentation and control devices.

It’s an optional device used in automation for continuous monitoring.

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SCADA

Product VendorsS.NO. COMPANY Scada software

1. Siemens (26%) WinCC (Windows

Control Centre)

2. Allen Bradley (14%) RSView (Rockwell

Software)

3. Modicon Vijeo Citect

4. Intelluation Fix Dynamics

5. WonderWare Intouch

6. GE(General

Electricity)

Cimplicity

7. KPIT Astra

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FeaturesAlarms

Security

Device Connectivity

Dynamic Process Graphics

Real Time & Historical Trends

Recipe Management

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Scripts: Script is a way of writing logic in SCADA

software. Every SCADA software has its own instructions and way of writing program.

Using scripts, one can develop complex applications. You can create your own functions to suit the process requirement. execution.

APPLICATION OF SCADA: Water Distribution water treatment Pump stations Traffic signals Fire alarms Chemical Petroleum plants Aerospace Bottling and canning and many more application…….

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THANK YOU…