Manda Institute of Technology Raisar,
Bikaner

TOPIC
1. PLC
2. SCADA
-Submitted by

Mahendra Bhakar
EC IV Year
What is Programmable Logic Controller
(PLC) ??
Definition:
A PLC is a digital operating electronic apparatus which uses a
...
Historical Background:

In 1968, a group of engineers from General Motors
developed the concept of PLC with an initial spe...
Simple PLC
digital inputs
network

analog inputs / outputs

digital outputs
Major Components of a Common PLC
POWER
SUPPLY

From
SENSORS

I M
N O
P D
U U
T L
E

PROCESSOR

Pushbuttons,
contacts,
limi...
Leading Brands Of PLC
AMERICAN:

1.
2.
3.
4.
5.
6.
7.

Allen Bradley
Gould Modicum
Texas Instruments
General Electric
West...
Leading Brands Of PLC

JAPANESE: 1.
2.
3.
4.

Toshiba
Omron
Fanuc
Mitsubishi
Areas of Application
Manufacturing / Machining
Food / Beverage
Metals
Power
Mining
Petrochemical / Chemical
PLC Size
1. SMALL

- it covers units with up to 128 I/O’s and memories up to 2
Kbytes.
- these PLC’s are capable of provid...
Tank Used To Mix Two Liquids

MOTOR

A
FS

SOLENOIDS

FLOAT SWITCH

B

SOLENOID

C
TIMER

1 -MINUTE
SCADA

Introduction (What Is SCADA?)

Supervisory Control And Data Acquisition is an Industrial
Control System.
 To run ...
SCADA Components
 Field Instrumentation.


Sensors, devices to control.

 Remote Terminal Units.
RTU Vs. PLC

 Commun...
A Typical SCADA System

13
Disadvantages Of Relay Systems


Relays used only for on/off control.



Complicated control systems



Expensive Syste...
Advantages Of SCADA systems




Easily programmed or reprogrammed
Easy maintained (self diagnostic).
Capability to do a...
Applications Of SCADA
Almost every business in the manufacturing sector and many in
the service sector
Aerospace
Bottlin...
Thank you
Plc & Scada
Upcoming SlideShare
Loading in …5
×

Plc & Scada

1,469 views

Published on

Published in: Education, Business, Technology
  • Be the first to comment

Plc & Scada

  1. 1. Manda Institute of Technology Raisar, Bikaner TOPIC 1. PLC 2. SCADA -Submitted by Mahendra Bhakar EC IV Year
  2. 2. What is Programmable Logic Controller (PLC) ?? Definition: A PLC is a digital operating electronic apparatus which uses a programmable memory for internal storage of instruction for implementing specific function such as logic, sequencing, timing, counting and arithmetic to control through analog or digital input/output modules various types of machines or process.
  3. 3. Historical Background: In 1968, a group of engineers from General Motors developed the concept of PLC with an initial specification. The PLC must be: i . Easy to program. ii. Not need rewiring the control system if change the program. iii. Smaller in size, cheaper and high reliability. iv. simple construction and low maintenance v. Cost- competitive
  4. 4. Simple PLC digital inputs network analog inputs / outputs digital outputs
  5. 5. Major Components of a Common PLC POWER SUPPLY From SENSORS I M N O P D U U T L E PROCESSOR Pushbuttons, contacts, limit switches, etc. PROGRAMMING DEVICE O U T P U T M O D U L E To OUTPUT Solenoids, contactors, alarms etc.
  6. 6. Leading Brands Of PLC AMERICAN: 1. 2. 3. 4. 5. 6. 7. Allen Bradley Gould Modicum Texas Instruments General Electric Westinghouse Cutter Hammer Square D EUROPEAN: 1. 2. 3. 4. Siemens Klockner & Mouller Festo Telemechanique
  7. 7. Leading Brands Of PLC JAPANESE: 1. 2. 3. 4. Toshiba Omron Fanuc Mitsubishi
  8. 8. Areas of Application Manufacturing / Machining Food / Beverage Metals Power Mining Petrochemical / Chemical
  9. 9. PLC Size 1. SMALL - it covers units with up to 128 I/O’s and memories up to 2 Kbytes. - these PLC’s are capable of providing simple to advance levels or machine controls. 2. MEDIUM - have up to 2048 I/O’s and memories up to 32 Kbytes. 3. LARGE - the most sophisticated units of the PLC family. They have up to 8192 I/O’s and memories up to 750 Kbytes. - can control individual production processes or entire plant.
  10. 10. Tank Used To Mix Two Liquids MOTOR A FS SOLENOIDS FLOAT SWITCH B SOLENOID C TIMER 1 -MINUTE
  11. 11. SCADA Introduction (What Is SCADA?) Supervisory Control And Data Acquisition is an Industrial Control System.  To run a Process Control Network (PCN).  Monitors and controls industrial plant/ equipment.  E.g. water, energy, fuel, telecommunications.  Coordinate data transfer between Remote Terminal Units (RTUs) & central host.  Display information to operators.
  12. 12. SCADA Components  Field Instrumentation.  Sensors, devices to control.  Remote Terminal Units. RTU Vs. PLC  Communications Network.  Equipment needed to transfer data to and from different sites  Central Monitoring Station  Collecting information gathered by the remote stations to generate the necessary action
  13. 13. A Typical SCADA System 13
  14. 14. Disadvantages Of Relay Systems  Relays used only for on/off control.  Complicated control systems  Expensive System.  System takes up much floor and space.  Control relays are power- hungry, heat generation.  Any change in control program requires the rewiring of relays.  For complicated control systems, it is difficult to troubleshoot and locate the faults.
  15. 15. Advantages Of SCADA systems    Easily programmed or reprogrammed Easy maintained (self diagnostic). Capability to do arithmetic function.  The ability to communicate with other controller or a master host computer. PLCs. were able to move past simple on/off control to more complex schemes as PID control. 
  16. 16. Applications Of SCADA Almost every business in the manufacturing sector and many in the service sector Aerospace Bottling and Canning Chemicals Plants Petroleum, Petrochemical
  17. 17. Thank you

×