# MECT06017 2019 Pneumatic / Electro-Pneumatic and Hydraulic Systems Full-Time

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**Description**

This module will give the students an introduction to pneumatic/electro pneumatic and hydraulic systems.It will cover basic pneumatic and hydraulic components and their use in complete systems. The student will also become acquainted with standard pneumatic and hydraulic symbols in accordance with IEC standards and be able to use a software simulation package to draw and simulate practical circuits.

This module will also cover advanced pneumatic and electro pneumatic circuits including sequencing of pneumatic cylinders. The circuits will be build and simulated in software.

### Learning Outcomes

*On completion of this module the learner will/should be able to;*

**1.**

Describe the components of a compressed air and air treatment system.

**2.**

Demonstrate an understanding of pneumatic circuit operation, including sequence control.

**3.**

Apply the cascade method to solve pneumatic sequential problems involving cascade groups and cylinders.

**4.**

Demonstrate an understanding of basic hydraulic systems.

**5.**

Design and simulate electro-pneumatic circuits to sequence cylinders.

**6.**

Employ formulae to calculate flow rate, piston force, system pressure and piston size.

### Teaching and Learning Strategies

Content will be delivered through lectures and practicals.

### Module Assessment Strategies

Continuous assessment via weekly laboratory sessions.

### Module Dependencies

**Prerequisites**

**Co-requisites**

**Incompatibles**

### Indicative Syllabus

**Electro-pneumatics**

Use of electrical switches and relays. Latching. Use of electrical timers. Sequencing of pneumatic cylinders to include, A^{ }A^{-}, AB^{ }A^{-}B^{-} etc. Draw and simulate standard electro-pneumatic circuits using a software package e.g. Fluidsim.

Advanced pneumatics techniques including two group cascade circuits.

**Pneumatics**

Advanced pneumatics techniques including two group cascade circuits.

**Sensors**

Proximity switches: inductive, capacitative, magnetic (reed) and optical.

**Indicative Practicals/Projects**

Demonstration of safe working practices in the workshop. Hazards associated with fluids under pressure, actuators in motion and electricity.** **

Construction of circuits using cylinders, directional control valves, pressure control valves and flow regulators with electro-pneumatic components such as relays and timers.

Construction of electro-pneumatic sequential circuits involving the use of two cylinders.

Demonstration of basic electro-pneumatic circuits using proximity, limit and pressure switches.** **

**Indicative Practicals/Projects**

Demonstration of safe working practices in the workshop. Hazards associated with fluids under pressure, actuators in motion and electricity.** **

Construction of circuits using cylinders, directional control valves, pressure control valves and flow regulators with electro-pneumatic components such as relays and timers.

Construction of electro-pneumatic sequential circuits involving the use of two cylinders.

Demonstration of basic electro-pneumatic circuits using proximity, limit and pressure switches.** **

**Electro-pneumatics**

Use of electrical switches and relays. Latching. Use of electrical timers. Sequencing of pneumatic cylinders to include, A^{ }A^{-}, AB^{ }A^{-}B^{-} etc. Draw and simulate standard electro-pneumatic circuits using a software package e.g. Fluidsim.

**Pneumatics:**

Compressed air production. Absolute and gauge pressure.

Manipulation of F=PA and Q=VA formulae.

Double and single acting cylinders, directional control valves (3/2 and 5/2), pilot air. Pressure and flow regulators, non-return valves, cylinder speed control.

Pneumatic timers and sequential circuits.

**Hydraulics**

Pascal’s law, hydraulic power.

Hydraulic fluids, reservoirs and distribution, filters.

Hydraulic pumps and actuators.

Directional, flow and pressure control valves.

Hydraulic circuits including metering, counterbalancing, use of regenerative cylinders, sequencing.

Directional control valves, power units and safety features.

**Indicative Practicals/Projects**

Demonstration of safe working practices in the laboratory. Hazards associated with fluids under pressure, actuators in motion and electricity.

Construction of circuits using cylinders, directional control valves, flow and pressure control valves, timers.

Construction of two group pneumatic cascade circuits.

Demonstration of commonly encountered basic power hydraulic circuits

e.g. sequence, counterbalance, flow control, regenerative.

**Pneumatics:**

Compressed air production. Absolute and gauge pressure

Double and single acting cylinders, directional control valves (3/2 and 5/2), pilot air. Pressure and flow regulators, non-return valves, cylinder speed control

Manipulation of F=pA and Q=vA formulae

Pneumatic timers and sequential circuits.

** Electro-pneumatics**

Control of cylinders using pneumatic and electrical techniques. Cylinder sequencing to include, A^{-}, A^{+}, A^{+}B^{+}, A^{-}B^{-} etc. Draw standard electro-pneumatic circuits using computer software.

**Hydraulics and Electro-hydraulics**

Hydraulic power, Bernoulli's equation

Hydraulic fluids, reservoirs and distribution, filters

Hydraulic actuators, pumps and motors

Directional, flow and pressure control valves

Accumulators

Hydraulic circuits including metering, counterbalancing, use of regenerative cylinders, quick approach, hydrostatic drive, sequencing and pressure offloading.

Motors, directional control valves, power units and safety features. Design and draw standard hydraulic circuits.

**Pneumatics**

Construction of circuits using cylinders, directional control valves, pressure control valves, flow regulators, timers. Construction of two group pneumatic cascade circuits.

**Electro-pneumatics**

Construction of circuits using electro-pneumatic components and relays, electronic timers, lights and alarms. Construction of two group electro-pneumatic cascade circuits.

**Hydraulics**

Construction of commonly encountered basic power hydraulic circuits.

e.g. sequence, counterbalance, flow control, regenerative, quick-approach.

**Electro-hydraulics**

Construction of basic hydraulic circuits with electrical control, using proximity, limit and pressure switches.

### Coursework & Assessment Breakdown

**Coursework & Continuous Assessment**

**End of Semester / Year Formal Exam**

### Coursework Assessment

Title | Type | Form | Percent | Week | Learning Outcomes Assessed | |
---|---|---|---|---|---|---|

1 | Lab Work | Practical | Multiple Choice | 40 % | OnGoing | 2,3,5,6 |

### End of Semester / Year Assessment

Title | Type | Form | Percent | Week | Learning Outcomes Assessed | |
---|---|---|---|---|---|---|

1 | Final Exam | Final Exam | Closed Book Exam | 60 % | Week 15 | 1,2,3,4 |

### Required & Recommended Book List

**Required Reading**

*Festo TP 101*Festo

**Required Reading**

*Electro-Pneumatics 201*Festo

**Required Reading**

1998-01

*Practical Pneumatics*Butterworth-Heinemann

ISBN 0340662190 ISBN-13 9780340662199

Covers properties of air, factory distribution systems, design of components, symbols and circuitry, safety and working procedures, emergency and fail-safe circuits, applications of pneumatics, seals and seal materials, multi-cylinder circuits, hydro-pneumatics, electro- pneumatics, maintenance and fault-finding.

**Required Reading**

*Fundamentals of pneumatic control engineering*Festo