Пропорциональный редукционный клапан, пилотного управления, со встроенной цифровой электроникой (OBED) или без нее 3DRE(E)(A), Z3DRE(E)(A)

Description Size 6 Component series 2X Maximum operating pressure 350 bar Maximum flow 60 l/min Features Pressure-controlled, optional Pressure reduction in ports A and P➀ with pressure limitation For subplate mounting or sandwich plate design With integrated digital electronics (OBED), optional CE conformity according to EMC Directive 2014/30/EU Linear command value pressure characteristic curve With integrated and external pressure sensor, optional Pressure sensor adjustable for various applications Digital (IO-Link, Bluetooth®) and analog interfaces, optional Optional via Bluetooth®, fast and easy analysis and structural adjustment by means of app function Product description Valves of type 3DRE and Z3DRE are electrically pilot-operated 3-way pressure reducing valves with pressure limitation of the actuator. They are used for reducing a system pressure. The valve basically consists of a pilot control valve (1), proportional solenoid (2), main valve (3) with main control spool (4). General In rest position, i. e. without pressure in channel P, the spring holds the main control spool in initial position. This opens the connection from A (P①) to T and blocks the connection from P to A (P①). With pressure connection from port P, pilot oil flows via flow controller (5) and nozzle and throttle gap to the pilot control valve (1) and afterwards flows off to channel T. The command value-dependent setting of the pressure to be reduced in channel A (P①) is effected using the proportional solenoid. Type 3DRE The pilot pressure builds up in the control chamber (6) as function of the command value. This moves the main control spool (4) to the right, hydraulic fluid flows from P to A. The actuator pressure in channel A is applied to the spring chamber (9) via the channel (7) and the nozzle (8). If the pressure in port A increases to the set pressure of the pilot control valve, this leads to the movement of the main control spool (4) to the left. The pressure in port A is almost identical with the set pressure at the pilot control valve. If, however, the pressure in port A exceeds the set pressure of the pilot control valve, the main control spool (4) is moved further to the left so that the connection from A to T is opened. In this way, the pending pressure in port A is limited to the set command value. Type Z3DRE In principle, the function of this valve version corresponds to the function of type 3DRE. The pressure reduction is, however, effected in channel P①. Type 3DRE... Type Z3DRE... Type (Z)3DREE – with integrated digital electronics (OBED) With regard to function and set-up, they correspond to valve type (Z)3DRE. On the proportional solenoid, there is the digital on-board electronics (OBED) (10). It may be equipped with different electric interfaces: Analog interface (XH1) Interface "A1" (command value 0 … 10 V) Interface "F1" (command value 4 … 20 mA) Digital interface (XH5) IO-Link "L1" Type (Z)3DREA – with integrated digital electronics (OBED) and