Pneumatic/Electro-Pneumatics Systems and Principles

Agenda [download course agenda]

Introduction to Pneumatics

• Pneumatic principles
• Control of pressure and flow
• Compressed air production, preparation and distribution

Understanding Electrical Ladder Diagrams

• The power source
• The rails
• The rungs and lines
• Arrangement of control elements
• Load arrangements
• Short-circuit protection
• Tracing signals through rungs
• Terminal strips and wire numbers

Components

• Control transformer, elements and switches
• Industrial electrical systems
• Normally open vs. normally closed

Solenoid Valves

• Direct and pilot actuated
• Electrical ratings
• Surge suppression
• Troubleshooting solenoid valves

Control of Actuators

• Pilot control of actuator
• Directional control valves
• Ladder diagrams using relays
• Memory control of an actuator
• Single and double solenoid valves
• Automatic return
• Actuator position sensors
• Reed switch, magnetic field sensors, inductive sensors, capacitive sensors, optical sensors, ultrasonic sensors

Latching Electrical Signals

• Dominant on and dominant off

Logic Controls

• Logic AND, OR and NOT function
• Logic combination
• Sequence, shift register and stepper control

Timers

• On-delay and off -delay
• Types of time-delay relays counters

Counters

• Modes of operation
• Programmable counters

Emergency stops

Hands-on Lab Exercises

• Ladder diagrams: line and wire numbers
• Single acting cylinder
• Double acting cylinder with a single solenoid valve
• Double acting cylinder with a double solenoid valve
• Automatic return with a limit switch and a double solenoid valve
• Automatic return with a limit switch and a single solenoid valve
• AND, OR and NOT function
• Logic combinations
• Sequence control, pressure dependent
• Function plan, step motion diagram and actual circuit diagram
• Shift register control
• Stepper control and shift register control
• On-delay and off -delay timer function in one circuit diagram
• Preset counters in a circuit diagram