Electric Drives Linear Motion and and Controls I Hydraulics I Assembly Technologies 4/2 and 4/3 proportional directional valves, direct operated, with electrical position feedback, without/with integrated electronics (OBE) Type 4WRE and 4WREE Size 6 and 10 Component series 2X Maximum operating pressure 315 bar Maximum flow: 80 l/min (size 6) 180 l/min (size 10) Table of contents Contents Page Electrical connection, mating connectors 8, 9 Block diagram of the integrated electronics (OBE) for - Direct operated proportional directional valve with electrical position feedback and integrated electronics (OBE) with type 4WREE - Control of flow direction and size - Operation by means of proportional solenoids with central thread and detachable coil - For subplate mounting: Porting pattern according to ISO 4401 - Spring-centered control spool - Control electronics integrated electronics (OBE) with voltage or current input (A1 and/or F1) • Type 4WRE (4/3 version), separate order: - digital and analog amplifier in Euro-card format - analog amplifier in modular design • Type 4WRE...A (4/2 version), separate order: - analog amplifier in modular design Information on available spare parts: www.boschrexroth.com/spc

2/22 Bosch Rexroth AG | Hydraulics Without integrated With integrated Control spool symbols In the zero position, spools W and WA have a connection from A to T and B to T with approx. 3 % of the relevant nominal cross-section. Further details in the plain text Seal material Electronic interface F1 = Command value 4 to 20 mA no code = Type 4WRE Electrical connection Type 4WRE: K4 = Without mating connector, with connector according to DIN EN 175301-803 Mating connector (solenoid, position transducer), separate order, see page 8 Type 4WREE: K31 = Without mating connector, with connector according...

Hydraulics Bosch Rexroth AG Symbols Proportional directional valve without integrated electronics Proportional directional valve with integrated electronics

Bosch Rexroth AG Hydraulics Function, section Type 4WRE …-2X/… The 4/2 and 4/3 proportional directional valves are designed as direct operated devices in plate design. Operation is effected by proportional solenoids with central thread and detachable coil. The solenoids are controlled by external electronics. – Direct operation of the control spool (2) by controlling a proportional solenoid, e.g. solenoid "b" (8) The valve basically consists of: – With de-energized solenoids (7 and 8), central position of the control spool (2) by compression springs (3 and 4) between spring plates (5 and 6) →...

Hydraulics Bosch Rexroth AG Function, section Type 4WREE …-2X/… Function: The 4/2 and 4/3 proportional directional valves are designed as direct operated devices in plate design. Operation is effected by proportional solenoids with central thread and detachable coil. The solenoids are controlled by the internal electronics. – With de-energized solenoids (7 and 8), central position of the control spool (2) by compression springs (3 and 4) between spring plates (5 and 6) – Direct operation of the control spool (2) by controlling a proportional solenoid, e.g. solenoid "b" (8) Set-up: The valve basically...

6/22 Bosch Rexroth AG | Hydraulics Technical data (For applications outside these parameters please consult us!)

Hydraulics | Bosch Rexroth AG Technical data (For applications outside these parameters please consult us!) \0T Notice: For information on the environmental simulation testing for the areas EMC (electromagnetic compatibility), climate and mechanical load see data sheet 29061-U (declaration on environmental compatibility). Due to the temperatures occurring at the surfaces of the solenoid coils, the European standards ISO 13732-1 and EN ISO 4413 need to be adhered to! Separate order

Bosch Rexroth AG Hydraulics Electrical connection, mating connectors (dimensions in mm) Type 4WRE (without integrated electronics) Connection to connector Connection to mating connector Mating connector CECC 75 301-803-A002FA-H3D08-G according to DIN EN 175301-803 and ISO 4400 Solenoid a, color gray separate order under the Material no. R901017010 Solenoid b, color black separate order under the Material no. R901017011 1 Mounting screw M3 Tightening torque MA = 0.5 Nm + 0.1 Nm Inductive position transducer Connection to plug-in connector Ground signal Ground supply Signal supply Coil connection...

Hydraulics | Bosch Rexroth AG Electrical connection, mating connectors (dimensions in mm) Type 4WREE (with integrated electronics (OBE) Mating connector according to DIN EN 175201-804 separate order under the Material no. R900021267 (plastic version) Angular design - separate order under the Material no. R900217845 Pin assignment see also block diagram page 10 Mating connector according to DIN EN 175201-804 separate order under the Material no. R900223890 (metal version) Device connector allocation Command value: Positive command value 0 to +10 V (or 12 to 20 mA) at D and reference potential...

Bosch Rexroth AG Hydraulics Integrated electronics (OBE) type 4WREE Block diagram / pin assignment Interface Command value Reference potential Actual value Reference potential Supply voltage GND Protective earthing conductor 1) Differential amplifier Undervoltage detection Actual value Power supply unit Zero point Position transducer Notice: Electric signals taken out via control electronics (e.g. actual value) must not be used for switching off safetyrelevant machine functions! The protective earthing conductor (PE) is connected to cooling element and valve housing! Ramp can be set from 0 to...

Hydraulics | Bosch Rexroth AG 11/22 Pressure signal characteristic curve (control spool V), ps = 100 bar

12/22 Bosch Rexroth AG | Hydraulics Zero flow with central control spool position 4 l/min rated flow with 10 bar valve pressure differential

Hydraulics Bosch Rexroth AG Characteristic curves: Type 4WREE (measured with HLP46, ϑOil = 40 °C ± 5 °C and p = 100 bar) Size 6 8 l/min rated flow with 10 bar valve pressure differential 16 l/min rated flow with 10 bar valve pressure differential 32 l/min rated flow with 10 bar valve pressure differential Maximum admissible flow Observe the performance limits on page 15! Δp = Valve pressure differential (inlet pressure pP minus load pressure pL minus return flow