This is one of the tasks that were set as part of my university Pneumatics and Automation module.

 

The equation simply means:

Piston A and Piston B extend at the same time, then hold for one second, and then both Piston A and Piston B retract at the same time. This whole process must be done twice before the whole system stops.

 

Equipment used:

•  2 Double Acting Cylinders

• Quick exhaust Valve

• 5-2-Way Actuating and Retracting Solenoid Valve

• 5-2-Way Spring Return Solenoid Valve

• 2 Reed Switches

• 2 Roller Switches

• Relay

• Counter

• Timer

• Latching Switch 

• Non-latching Switch