Syllabus of Pneumatic System

Pneumatic System

  • Introduction to Pneumatics & Architecture of Basic Pneumatic System
  • Preparation of Compressed Air and Distribution
  • Cooling & Drying of Compressed Air , Air Treatment (FRL Unit)
  • DCV with Auxillary Valves
  • Actuators and Selection of Actuators
  • Pneumatic Symbols and Design of Basic Circuits
  • Automsim Software Working Procedure with Basic Circuit Workouts
  • Practical Workouts of Basic Pneumatic System
  • Maintenance of Pneumatic System
  • Introduction to Electro Pneumatics and Automation
  • Operation & Types of Relays and Gate Functions Using Relays
  • Architecture of PLC & Explanation
  • Types of PLC and Programming Languages & Explanations
  • Sensor Wiring , MCC Panel Wiring
  • PLC Control Panel Wiring
  • Do’s &Don’ts of Ladder Diagram and Gate functions
  • Latching & Unlatching with Memory Concepts
  • Working in PLC Software with Basic Programming
  • Online Interfacing of PLC , Timers and Counters
  • Programming of Pneumatic Simple Logics
  • Programming of Pneumatic Machine Process

Pneumatic System Overview

In the industry we use three methods for transmitting power from one point to another. Mechanical transmission is through shafts, gears, chains, belts, etc. Electrical transmission is through wires, transformers, etc. Fluid power is through liquids or gas in a confined space. Fluid power is the technology that deals with the generation, control and transmission of forces and movement of mechanical element or system with the use of pressurized fluids in a confined system. Both liquids and gases are considered fluids. Fluid power system includes a hydraulic system (hydra meaning water in Greek) and a pneumatic system (pneuma meaning air in Greek).

Oil hydraulic employs pressurized liquid petroleum oils and synthetic oils, and pneumatic employs compressed air that is released to the atmosphere after performing the work. Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases. A centrally located and electrically powered compressor powers cylinders, air motors, and other pneumatic devices.

A pneumatic system controlled through manual or automatic solenoid valves is selected when it provides a lower cost, more flexible, or safer alternative to electric motors and actuators. A pneumatic system carries power by employing compressed gas, generally air, as a fluid for transmitting energy from an energy-generating source to an energy-using point to accomplish useful work.

The functions of various components are as follows:
1. The pneumatic actuator converts the fluid power into mechanical power to perform useful  work.
2. The compressor is used to compress the fresh air drawn from the atmosphere.
3. The storage reservoir is used to store a given volume of compressed air.
4. The valves are used to control the direction, flow rate and pressure of compressed air.
5. External power supply (motor) is used to drive the compressor.
6. The piping system carries the pressurized air from one location to another.

Air is drawn from the atmosphere through an air filter and raised to required pressure by an air compressor. As the pressure rises, the temperature also rises; hence, an air cooler is provided to cool the air with some preliminary treatment to remove the moisture. The treated pressurized air then needs to get stored to maintain the pressure. With the storage reservoir, a pressure switch is fitted to start and stop the electric motor when pressure falls and reaches the required level, respectively.

Advantages of Pneumatics

Simplicity of Design and Control – Machines are easily designed using standard cylinders and other components, and operate via simple on-off control.

Reliability – Pneumatic systems generally have long operating lives and require little maintenance. Because gas is compressible, equipment is less subject to shock damage. Gas absorbs excessive force, whereas fluid in hydraulics directly transfers force. Compressed gas can be stored, so machines still run for a while if electrical power is lost.

 

Safety – There is a very low chance of fire compared to hydraulic oil. New machines are usually overload safe to a certain limit.

 

Our Outcome Engineers able to do

Read the Industrial pneumatic control circuits
Troubleshoot, diagnosis and repair the pneumatic system
Routine and preparation of preventive maintenance
Retrofit the Pneumatic control system
Repair and replacement of pneumatic equipment
Designing of new pneumatic control system