Modular Pneumatic Linear Drive Systems - Parker Hannifin GmbH - #101

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Application Example - Vertical Application Control of a cylinder with 3/2 way valves. Basic position - exhausted Control of a cylinder with 3/2 way valves. Basic position - pressurised L 01 D2 kD1 D2 Yk down up down up 2 2 2 2 IZEJT T|\|Wl EEJ1 T| \|\M 1| '3 1 13 T t\ I t 11 3 2 2 3 3 -® -® Control Examples Under normal operating circum-stances the pressure switch is closed and the air flows through the 3/2 way solenoid valves from port 1 to 2, thus lifting the brake from the rail (operating condition). The brake is pressurised by means of a 3/2 way valve in combination with a pressure switch. When there is a pressure loss, the brake is actuated by the pressure switch. When the air pressure is restored to both cylinder chambers, the brake is lifted and the linear drive can be moved again. Please note: Before the brake is lifted, make sure that both air chambers of the linear drive are pressurised. Small diameter tubing, fittings and valves with a nominal diameter, and tubing that is too long all change the reaction time of the brake! * Tip: The pressure switch actuates the brake when the pressure drops below the set value. For accessories, such as tubing and fittings, please refer to our separate catalogue. The speed regulating valves D1 and D2 control the speed of the linear drive, and have no influence on the brake. The two non-return valves give the system a higher stability. The pressure regulating valve is used to compensate for the downward force in this vertical application. e h T 99