Lecture 41 ELECTRO PNEUMATIC CONTROL Learning …

Lecture 41. ELECTRO PNEUMATIC CONTROL . Learning Objectives Upon completion of this chapter, Student should be able to Explain the various steps involved in ELECTRO pneumatics List seven basic electrical devices used in ELECTRO pneumatics Describe the constructional details of solenoid valves Explain the operations of CONTROL devices like limit switches, sensors, timers , counters and pressure switches Differentiate between capacitive and inductive proximity sensors Differentiate between dominant on and off latching circuits Design single actuator ELECTRO PNEUMATIC circuits Design a sequence circuits using two and three cylinders INTRODUCTION. ELECTRO pneumatics is now commonly used in many areas of Industrial low cost automation. They are also used extensively in production, assembly, pharmaceutical, chemical and packaging systems. There is a significant change in controls systems. Relays have increasingly been replaced by the programmable logic controllers in order to meet the growing demand for more flexible automation.

1.2.1 Push button switches A push button is a switch used to close or open an electric control circuit. They are primarily used for starting and stopping of operation of machinery.

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