Wenzhou Prance Hydraulic Equipment Co., Ltd
Proportional Valve 4WRAE
1.Direct actuated proportional valve for controlling the direction and volume flow of a hydraulic fluid
2.For subplate mounting
3.For the open loop control of both direction and flow of a hydraulic fluid Spring centred control spool
4.Low pressure drop across the control lands
5.Both valve and electronic control from one supplier
Detailed description
This is a direct actuated proportional valve, specifically designed to precisely control both the direction and volume flow of hydraulic fluid in hydraulic systems. Its direct actuation design eliminates the need for intermediate transmission components, enabling fast response to control signals and accurate regulation of fluid direction and flow rate, which is crucial for scenarios requiring precise hydraulic control. The valve is designed for subplate mounting, a standard installation method that ensures easy integration into existing hydraulic systems, simplifies installation and maintenance processes, and enhances the overall compactness of the system. It is suitable for the open-loop control of both the direction and flow of hydraulic fluid, equipped with a spring-centred control spool that automatically returns to the neutral position when the control signal is interrupted, ensuring safe and stable system operation and preventing unexpected movement of hydraulic components. The valve features a low pressure drop across the control lands, which minimizes energy loss during fluid flow, improves system efficiency, and reduces heat generation, thus extending the service life of the valve and the entire hydraulic system. Additionally, both the valve and its electronic control components are supplied by a single supplier, ensuring perfect compatibility between the two, simplifying procurement and after-sales service, and guaranteeing consistent performance and reliable operation of the entire control system.
Technical data
(for applications outside these parameters, please consult us!)
General
| Nominal size | NS | 6 | 10 | |
| Installation | optional, preferably horizontal | |||
| Storage temperature range | ℃ | -20 to +80 | ||
| Ambient | 4WRA | ℃ | -20 to +70 | |
| temperature range | 4WRAE | ℃ | -20 to +50 | |
| Weight | 4WRA | kg | 2.0 | 6.6 |
| 4WRAE | kg | 2.2 | 6.8 | |
| Hydraulic (measured with HLP46,Θoil= 40 ℃±5 ℃) | ||||
| Max. operating pressure | Ports A, B, P | bar | 315 | |
| Port T | bar | 210 | ||
| Nominal flow qV nom at Δp=10 bar | l/min | 7,15,26 | 30,60 | |
| Max. permissible flow | l/min | 42 (80)1) | 75 (140)1) | |
| Pressure fluid | mineral oil (HL, HLP) to DIN 51524 other pressure fluids on request! |
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| Pressure fluid temperature range | ℃ | -20 to +80 (preferably +40 to +50) | ||
| Viscosity range | mm2/s | 20 to 380 (preferably 30 to 46) | ||
| Max. permissible degree of pressure fluid contamination cleanlisness class to ISO 4406 (c) | class 20/18/15 2) | |||
| Hysteresis | ％ | ≤ 5 | ||
| Reversal error | ％ | ≤ 1 | ||
| Response sensitivity | ％ | ≤ 0.5 | ||
1)permissible flow with a dual flow path
2)The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the component service life.For the selection of filters see catalogue sheets RE 50070,RE 50076, RE 50081, RE 50086 and RE 50088
Electical
| Nominal size | NS | 6 | 10 | |
| Voltage type | DC | |||
| Command value signa | Voltage input "A1" | V | ±10 | |
| with type WRAE | Current input "F1" | mA | 4 to 20 | |
| Max. current per solenoid | A | 2.5 | ||
| Solenoid coil | Cold value at 20 ℃ | Ω | 2 | |
| resistance | Max. warm value | Ω | 3 | |
| Duty | ％ | 100 | ||
| Max. coil temperature 1) | ℃ | 150 | ||
| Electrical connections see page 7 |
4WRA | with component plug to DIN EN 175301-803 or ISO 4400 | ||
| plug-in connector to DIN EN 175301-803 or ISO 4400 2) | ||||
| 4WRAE | with component plug to DIN EN 175201-804 | |||
| plug-in connector DIN EN 175201-804 2) | ||||
| Valve protection to EN 60529 | IP65 with mounted and fixed plug-in connector | |||
Control electronics
| For 4WRA | Digital amplifier in Eurocard format 2) | VT-VSPD-1-2X (to RE 30523 - middle of 2006) | |
| Analogue amplifier in Eurocard format 2) | VT-VSPA2-1-2X/... to RE 30110 | ||
| Analogue module amplifier 2) | VT-MSPA2-1-1X to RE 30228 | ||
| For 4WRAE | Analogue command value module | integrated into the valves, see page 8 | |
| VT- SWMA-1-1X/... to RE 29902 | |||
| Analogue command value module | VT-SWMKA-1-1X/... to RE 29903 | ||
| Digital command value card | VT-HACD-1-1X/... to RE 30143 | ||
| Analogue command value card | VT-SWKA-1-1X/... to RE 30255 | ||
| Supply voltage 4WRAE, 4WRA 3) |
Nominal voltage | VDC | 24 |
| Lower limiting value | V | 21 / 22 (4WRA); 19 (4WRAE) |
|
| Upper limiting value | V | 35 | |
| Amplifier current | lmax | A | 1.8 |
| consumption | Max. impulse current | A | 3 |
1) Due to the occurring surface temperature of the solenoid coils, the European Standards DIN EN 563 and DIN EN 982must be taken into account!
2) Separate order
3) With Bosch Rexroth AG control electronics
Note:
For details regarding the environmental simulation test covering EMC (electromagnetic compatibility), climate and mechanical loading see RE 29055-U(declaration regarding environmental compatibility).
