Team members : Sheik Suhail, Mohmmad Iqbal,Ardev Cheb
Semester : 8th
Branch : Electrical Engineering
Under the Supervision of :
Dr. Satyendra Kumar Singh
Assistant Professor
PLC Based Automatic Dam Shutter Control System
Contents
Contents
Introduction to PLC
Block Diagram of PLC
Major components of PLC
Advantages of PLC
Simple program.
Project
Problem Statement
Components
Pictures
Working
Ladder Program
Introduction to PLC
Introduction to PLC
Programmable Logic Controller (PLC) is an industrial computer that monitors inputs, makes decisions based on its program and controls outputs to automate a process or machine.
PLC The automation of many different processes, such as controlling machines or factory assembly lines, is done through the use of small computers called a programmable logic controllers (PLCs)
Components
- POWER SUPPLY
- The power supply provides power for the PLC system .
- Common power levels used are
- 24V DC or 120v AC.
- CENTRAL PROCESSING UNIT(CPU)
- It is the brain of PLC and governs the activities of the entire PLC systems
- THE CPU CONSISTS OF FOLLOWING BLOCKS:
- Arithmetic Logic Unit (ALU),
- Internal memory of CPU
- Internal timers . counters and Flags
- INPUT MODULES: That carry signals from the process into the controller.
- Ex.: Switches, Pushbuttons, Sensors.
- OUTPUT MODULES: That convert control instructions a signal that can be used by actuators.
- Ex.: Indicator Lamp, Motor
- PROGRAMMING DEVICE:
- The programming terminal is used for programming the PLC and monitoring/sequencing PLCs operation
OPERATIONS
- THE VARIOUS OPERATIONS PERFORMED ARE:
- Scanning I/O bus traffic control , Program execution,
- Peripheral and External device communication. Data handling and self diagnostics.
Advantages of plc
Advantages
Disadvantages
- Replacing Human Operators
- Dangerous Environments
- Beyond Human Capabilities
- Flexibility in programming and reprogramming & have an easily understood programming language.
- Cost effective for controlling complex systems.
- Improves Productivity
- Small physical size, high speed of operation.
- Ability to communicate with computer systems in the plant.
- Ease of maintenance /troubleshooting.
- Reduced space.
- Energy saving
Disadvantages
Disadvantages
Limited design and fixed Circuit Operations.
PLCS manufacturers offer only closed architectures.
PLC Devices Are Proprietary.
Initial Costs Are High.
Unemployment Rate Increases.
Project
Automatic dam shutter controle system
Project
Problem Statement
- Dams are typically constructed with a drain or similar mechanism to control water levels in an impoundment for normal maintenance or emergency purposes. A disaster is any event that causes great harm or damage, serious or sudden misfortune. Dam failures clearly fit this definition.
Dammage or Failure
Dammage or
failure
Components
Topic 6
- Float switch DC
- PLC
- 2 Relay 24v & one 5v
- DC Motor 24V, 60 rpm,
- 2 Push Buttons