Electropneumatic circuits

ELECTROPNEUMATIC CIRCUITS

• If electrical control components are used in pneumatic circuits, then they are called as electropneumatic circuits.

• If electrical control components are used in hydraulic circuits, then they are known as electrohydraulic circuits.

The various electrohydraulic circuits are presented already in Sections 14.4 to 14.8. In those circuits, instead of oil, air is used as working medium, then they can be converted into electropneumatic circuits.

1. Control of a Pneumatic Cylinder using a Single Limit Switch

The circuit diagram and ladder diagrams are exactly the same as that of the electrohydraulic circuit presented in Section 14.4. In that circuit, oil is to be replaced with air as working medium.

2. Reciprocation of Pneumatic Cylinder using Pressure Switches

The circuit diagram and ladder diagram are exactly the same as that of the electrohydraulic circuit presented in Section 14.5. In that circuit, oil is to be replaced with air as working medium.

3. Reciprocation of Pneumatic Cylinders using Limit Switches

The circuit diagram and ladder diagram are exactly the same as that of the electrohydraulic circuit presented in Section 14.6. In that circuit, oil is to be replaced with air as working medium.

4. Dual Pneumatic Cylinder Sequencing Circuit

(Sequencing of Two Pneumatic Cylinders using Solenoids and Limit Switches)

The circuit diagram and ladder diagram are exactly the same on that of the electrohydraulic circuit presented in Section 14.7. In that circuit, oil is to be replaced with air as working medium.

5. Electrical Control Circuit for Regenerative Circuit of a Double-Acting Pneumatic Cylinder

The circuit diagram and ladder diagram are exactly the same as that of the electrohydraulic circuit presented in Section 14.8. In that circuit, oil is to be replaced with air as working medium.