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- Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE)
Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE)
Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE)
The Bosch Rexroth WRCE directional high-response cartridge valve is a 2- or 3-way valve with pilot control, suitable for applications like presses and die casting machines. It is position-controlled and adheres to ISO 7368 standards, offering flexibility in controlling position, pressure, force, and velocity.
Available in sizes 32, 40, and 50, the valve operates at a maximum pressure of 420 bar and a flow rate of 4500 l/min. It includes on-board electronics and is pilot-operated.
Detailed ordering codes are provided for 2WRCE and 3WRCE models, covering size, control spool design, rated flow, flow characteristics, component series, pilot control valve, supply voltage, electrical connection, and seal material.
The WRCE valves are 3-stage, pilot-operated, high-response cartridge valves used in control loops. They include a 2-stage pilot control valve, a main stage for flow control, an inductive position transducer, and integrated electronics for comparing command and actual values to actuate the torque motor proportionally.
Extensive technical data is provided, including general specifications, hydraulic and electrical parameters, and dynamic characteristics. It specifies cleanliness class for hydraulic fluid, response sensitivity, temperature drift, and zero point calibration.
Details include supply voltage requirements, command value input, and actual value output.
Characteristic curves for different sizes and installation dimensions are included, along with information on the installation bore and available accessories.
This document provides technical specifications and operational guidelines for Bosch Rexroth's WRCE series valves, including electrical and hydraulic parameters, installation instructions, and performance characteristics.
- Supply Voltage: Nominal values are 24 VDC for G24 and ±15 VDC for G15 versions, with specified limits.
- Power Consumption: Maximum power consumption is 40 VA, with current consumption under 2 A and impulse current of 3 A.
- Fuse Protection: External fuse protection required at 2.5 AT (time-lag).
- Command and Actual Values: Command value input ranges from 0 to +10 mA, with an input resistance of 100 Ω. Actual value output ranges from +0.5 to +10 mA, with a maximum load over 1 kΩ.
- Operating Pressure: Maximum operating pressure for main stage ports A, B, T is 315 bar, with specific limits for pilot control valve ports X and Y.
- Hydraulic Fluid: Supports various hydraulic fluids, including mineral oils and bio-degradable options, with specific cleanliness classes required.
- Flow Rates: Rated and maximum flow rates are provided for different versions (L and P), with specific values for sizes NG 32, 40, and 50.
- Installation Position: The valve can be installed in any position, preferably horizontal.
- Temperature Range: Ambient temperature range is -20 to +60°C, with storage temperature up to +80°C.
- Protection Class: IP65 when suitable connectors are used.
- Hysteresis and Sensitivity: Hysteresis is ≤0.2%, with response sensitivity and range of inversion both ≤0.1%.
- Temperature Drift: Specified for changes in hydraulic fluid temperature and pilot pressure.
- Characteristic Curves: Detailed curves are provided for pressure-signal characteristics, flow/signal functions, and frequency responses for different sizes.
- Consult Bosch Rexroth for applications outside specified values.
- Ensure hydraulic fluid ignition temperature is 50 K higher than maximum surface temperature.
- Consider potential limitations with bio-degradable and flame-resistant fluids, especially regarding zinc content and cavitation effects.
Catalog excerpts
Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE) Type WRCE ▶ ▶ ▶ ▶ Size 32 … 50 Component series 2X Maximum operating pressure 420 bar Maximum flow 4500 l/min Features1 Ordering code 2, 3 Symbols 4, 5 Function, section 6, 7 Technical data 8 … 12 Block diagram/controller function block 13 Electrical connections and assignment 14, 15 Characteristic curves 16 … 25 Dimensions 26 … 29 Installation bore 30 Accessories31 Further information 31 2- or 3-way directional cartridge valve Pilot control valve: 2-stage directional servo valve Main stage: position-controlled Normalized: – Installation dimensions according to ISO 7368 ("2WRCE") ▶ Flexible: – Suitable for position, pressure, force and velocity control ▶ Typical applications: – Presses – Die casting machines – Punching axes
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WRCE | Directional high-response cartridge valve Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE) Control spool in seat design – Size 32 480 l/min (only version "R") 650 l/min (only version "L") – Size 40 700 l/min (only version "R") 1000 l/min (only version "L") – Size 50 1100 l/min (only version "R") 1600 l/min (only version "L") Linear with progressive fine control range Component series 20 … 29 (20 … 29: unchanged installation and connection dimensions) Pilot control valve 08 Directional servo valve Command value input 0 … 10 V, actual value output...
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Directional high-response cartridge valve | WRCE 3/32 Directional high-response cartridge valve, pilot-operated, with on-board electronics (OBE) Control spool in spool design – zero overlap (+0.5 … +1.5 %) Control spool in spool design – positive overlap 10 … 13 % – Size 32 250 l/min (only versions "E" and "P") 290 l/min (only versions "V" and "L") – Size 40 410 l/min (only versions "E" and "P") 460 l/min (only versions "V" and "L") – Size 50 620 l/min (only versions "E" and "P") 720 l/min (only versions "V" and "L") Linear with progressive fine control range Component series 20 … 29 (20 … 29:...
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WRCE | Directional high-response cartridge valve Symbols: "2WRCE" Simplified Version "without reference" and "WK15" Detailed Version "no code" Notice: Representation according to ISO 1219-1. Bosch Rexroth AG, RE 29136, edition: 2024-07
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Directional high-response cartridge valve | WRCE 5/32 Symbols: "3WRCE" Simplified Version "V…no code" and "V…WK15" Detailed Version "V…no code" Notice: Representation according to ISO 1219-1.
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WRCE | Directional high-response cartridge valve Function, section: "2WRCE" Valves of type 2WRCE are pilot-operated, 3-stage directional high-response cartridge valves. They control the quantity and direction of a flow and are mainly used in control loops. Set-up The valves consist of the following assemblies: ▶ 2-stage pilot control valve (1) – with dry torque motor – low-friction nozzle flapper plate amplifier – mechanical feedback of the control spool position ▶ Main stage (2) for flow control ▶ An inductive position transducer (3) the core (4) of which is attached to the main control spool...
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Directional high-response cartridge valve | WRCE Function, section: "3WRCE" Valves of type 3WRCE are pilot-operated, 3-stage directional high-response cartridge valves. They control the quantity and direction of a flow and are mainly used in control loops. Set-up The valves consist of the following assemblies: ▶ 2-stage pilot control valve (1) – with dry torque motor – low-friction nozzle flapper plate amplifier – mechanical feedback of the control spool position ▶ Main stage (2) for flow control ▶ An inductive position transducer (3) the core (4) of which is attached to the main control spool...
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WRCE | Directional high-response cartridge valve Technical data: "2WRCE" (Please consult us for applications outside these values!) General Sizes Cartridge valve ▶ Without shut-off valve ("no code") ▶ With shut-off valve ("WK15", "WL15") Installation position Ambient temperature range Storage temperature range Protection class according to EN 60529 NG IP65 (if suitable and correctly mounted mating connectors are used) Hydraulic Maximum operating pressure ▶ Main stage – Ports A, B ▶ Pilot control valve – Port X bar Pressure peaks <100, static <10 Hydraulic fluid Hydraulic fluid temperature range...
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Directional high-response cartridge valve | WRCE Technical data: "2WRCE" (Please consult us for applications outside these values!) Electrical, on-board electronics (OBE) – interface "A1" Version Supply voltage ▶ Maximum residual ripple ▶ Maximum power consumption ▶ Current consumption Impulse current ▶ Fuse protection, external Relative duty cycle time according to VDE 0580 Functional ground and screening Maximum voltage of the differential inputs against 0 V Command value (differential amplifier) Actual value (test signal) ▶ Minimum load impedance Electrical, on-board electronics (OBE) – interface...
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WRCE | Directional high-response cartridge valve Technical data: "3WRCE" (Please consult us for applications outside these values!) General Sizes Cartridge valve ▶ Without shut-off valve ("no code") ▶ With shut-off valve ("WK15", "WL15") Installation position Ambient temperature range Storage temperature range Protection class according to EN 60529 NG IP65 (if suitable and correctly mounted mating connectors are used) Hydraulic Maximum operating pressure ▶ Main stage – Ports A, B, T ▶ Pilot control valve – Port X bar Pressure peaks <100, static <10 Hydraulic fluid Hydraulic fluid temperature...
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