The 3/3 directional high-response valve is designed as cartridge valve with integrated control electronics for the stepless closed-loop control of a from P to A and A to T。 Technical design The valve consists of the following assemblies • Cover (1) with connection faces, • Main spool (7) with control edges, • Bushing (2), • Pilot control valve (3) with paired spool/bushing unit and inductive position transducer (6). • Integrated control electronics (4) with inductive position transducer (12) of the main spool. Function • Actuation of the main spool (7) using the pilot control valve (3); pressure build-up in the control chamber (10) acts on area (8) – the pressure in port A acting on area (11) and the spring force (9) act in the opposite direction • The spool of the pilot control valve is controlled by means ofproportional solenoid (5) against the force of the spring in the pilot control valve. • Linking of command values (4) and actual values (12 and 6) in the microcontroller of the integrated control electronics (4) • Pilot oil supply X to the pilot control valve port P; pilot oil drain via Y to the tank • At command value 0 V or 12 mA the electronics controls the main spool (7) in central position, thus pressure in A approx. P system/2 • Area ratio of area (11) to area (8) at: Size 25 = 1 : 1.5 Size 32 = 1 : 1.5 Size 50 = 1 : 1 Failure of supply voltage The integrated control electronics de-energizes the sole-noid when the supply voltage fails or the cable is ruptured • Depressurization of spool area (8) via pilot control valve (3) to Y to the tank. • Due to spring force (9) and pressure in port A on area (11) the main spool (7) opens the connection A to T and closes from P to A Important note: Failure of the supply voltage results in the closed control loop stopping abruptly. The accelerations occurring at this point may lead to machine damages. 3WRCBEE25VF190M-1X/G24K31/A1M 3WRCBEE25VF190M-1X/G24K31/F1M
3WRCBEE32VF380M-1X/G24K31/A1M 3WRCBEE32VF380M-1X/G24K31/F1M
3WRCBEE50V750M-1X/G24K31/A1M 3WRCBEE50V750M-1X/G24K31/F1M 力士樂3WRCBEE型先導式三位三通方向控制閥的特征（3/3 directional high-response valve Features）：Pilot operated 3/3 directional high-response valve sizes 25, 32 and 50；Design: Block installation, 3/3 directional symbol control edges P > A or A > T ； Mounting cavity, see page 14 ；Control spool with anti-rotation feature and control edges in servo-performance quality ；Pressure-resistant up to 315 bar ； With inductive position transducer on main spool and pilot valve ；Position-controlled with integrated electronics OBE. ； These valves serve for closed-loop control of the magnitude and direction of the flow. ；Compley adjusted unit ；Flow characteristics M = Progressive with fine control edge ；In case of an error in the OBE and pilot pressure applied the main spool is opened in direction A towards T. P to A is blocked then. |
