HAWE Hydraulik SE, Munich, now offers proportional directional spool valve
type PSV (F) with CAN-BUS interface in four sizes. The valve features integrated control electronics and integrated cable duct which greatly facilitates installation and start-up in the vehicle. The largest size PSVF 7 provides a volume flow of up to 800 l/min allowing it to reliably control the movements of the jibs in large construction machines, drilling equipment and mobile cranes.
The proportional directional spool valve type PSV is employed in mobile hydraulic systems for controlling direction of motion and for the load-independent, infinitely variable control of the speed of motion of hydraulic actuators. A CAN-BUS interface is integrated directly in the valve section for connection to the master control unit and for controlling complex systems with decentralized valve islands, sensors and actuators. They also make possible hydraulic valve operating times that are up to three times as fast as that of a conventional proportional valve. That also makes the product interesting for steering systems. Thanks to signal feedback, high repetition accuracy is attained and programming of automatic processes is considerably simplified. The user can thus rely on unfailingly precise control of the hydraulic actuators.
A special feature of the largest size 7 is that a volume flow of 800 l/min can be supplied via a single input section. This enables several functions to operate in parallel at full speed. The flange construction enables the individual spool valve sections to be changed easily since the consumer lines do not need to be dismantled.