Proportional valves are really clever regulators for various pneumatic applications, since they regulate actuator movement at different speed and power levels. The new VPPM proportional valve from Festo, however, satisfies all requirements. Users can now individually select different proportional valves from a modular system to suit their application.

Proportional valves enable different regulating characteristics to be set. This is often necessary in handling and assembly technology or in the furniture industry, where machine cycle times with lower drive speeds must be applied. Proportional valves are also used by automotive parts suppliers and in manufacturing technology, conveyor systems or test engineering for travel according to individual acceleration ramps in cases where pneumatic drives must approach delicate goods gently. The variable flow rates of the proportional valves adapt the cylinder speeds to the manufacturing process. The valves regulate the contact force during polishing or spin welding and the internal pressure for the extrusion of tubing. They also regulate the torque in the case of pneumatic impact wrenches.

Pressure regulation
The new VPPM proportional valve is the ultimate for astute designers. Design engineers can save space as well as money, as they can move a cylinder with one valve and regulate the force by means of pressure regulation. Savings can also be achieved through the flexible function modules, from which users can assemble the individual proportional valve functions that they need.

Multi-sensor control
For each individual application, users can select the relevant parameters from three presets (fast, universal, precise) at the touch of a button. The modular system offers two overall accuracy levels. An optional LCD display shows the pressure and provides on-site diagnostic functions. With the unique “multi-sensor control” feature, integrated sensors ensure reliable control, whereby there is no pressure drift in the event of temperature changes and the possibility of overshooting is excluded.

Connection to decentralised electrical peripherals
The VPPM can be connected to the modular electrical terminal CPX using a hybrid cable, with IP65 protection provided directly in the application. Short cables and tubing provide reliable regulator results. With CPX it is possible to have a fieldbus and Ethernet connection, easy commissioning on site and comprehensive diagnosis.

Additional Specs
• Connection G1/8, NPT1/8-27
• Flow rate 0 ... 1,400 l/min
• Pressure regulating valves
• 3 controller positions selectable (rapid, universal, precise)
• Display optionally available

DOWNLOADS & LINKS
VPPM Product Information (PDF)
VPPM-MPA - Proportional Technology with a Fieldbus System (PDF)