ELECTRICAL LAB

PNEUMATIC CIRCUIT FOR SPEED CONTROL OF DOUBLE ACTING CYLINDERS.

Pneumatic Circuit for Speed Control of Double Acting Cylinders. Pneumatic cylinders can be directly controlled by actuation of final directional control valve as shown in fig. These valves can be controlled manually or electrically. This circuit can be used for small cylinders as well as cylinders which operates at low speeds where the flow rate requirements are less. When the directional control valve is actuated by push button, the valve switches over to the open position, communicating working source to  the cylinder volume. This results in the forward  motion of the piston. When the push button is  released, the reset spring  of the valve restores the valve to the initial position [closed]. The cylinder space is connected to exhaust port there by piston retracts either due to