Function and configurationsThe 4/2- and 4/3-way proportional directional valves are designed as direct operated components for subplate mounting. They are actuated by means of proportional solenoids w...
Product Detail
Function and configurations
The 4/2- and 4/3-way proportional directional valves are designed as direct operated components for subplate mounting. They are actuated by means of proportional solenoids with central thread and removable coil. The solenoids are controlled either by external control electronics (type 4WRA...L2X) or by integrated control electronics (type 4WRAE...L2X).
The valves basically consist of: Body (1) with mounting surface, Control spool (3) with compression springs (2), Solenoids (4) with central thread, Optional integrated electronics (5).
With the solenoids (4), de-energised, the control spool (3) is held in the central position by the compression springs (2).
Direct operation of the control spool (3) by energising one of the proportional solenoids(4) e.g. control of solenoid right, then movement of the control spool (3) to the left in proportion to the electrical input signal, and connection from P to A and B to T via orifice-like crosssections with progressive flow characteristics.
Symbols
Ordering code
Technical data
| 1.Hydraulic | ||||
| Installation | Optional,preferably horizontal | |||
| Nominal size | 6 | 10 | ||
| Weight | 4WRA...L2X | Kg | 2.0 | 6.6 |
| 4WRAE...L2X | 2.2 | 6.8 | ||
| Nominal flow Qvnom at Δp = 10 bar | L/min | 7,15,26 | 30,60 | |
| Hysteresis | % | ≤5 | ||
| Reversal span | % | ≤1 | ||
| Response sensitivity | % | ≤0.5 | ||
| Max.operating pressure | Ports A, B,P | bar | 315 | |
| Port T | bar | 210 | ||
| Pressure fluid | Mineral oil (HL, HLP) to DIN 51524 | |||
| Other pressure fluids on request! | ||||
| Ambient air temperature range | 4WRA...L2X | ℃ | -20℃ to 70℃(-4°F to 158°F) | |
| 4WRAE...L2X | ℃ | -20℃ to 50℃ (-4° F to 122°F) | ||
| Viscosity range | m㎡/s | 20 to 380 (preferably 30 to 46) | ||
| Fluid Cleanliness Class | NAS1638 class9 or ISO 4406 class 20/18/15 | |||
| 2.Electrical | |||||
| 1) Solenoid data | |||||
| Voltage type | DC | ||||
| Command value signal for 4WRAE | ±10V or 4~20mA | ||||
| Max.current per solenoid | A | 2.5 | 1.5 | 0.8 | |
| Solenoid coil resistance | Cold value at 20℃ | Ω | 2 | 4.8 | 19.5 |
| Max.warm value | 3 | 7.2 | 28.8 | ||
| Duty | % | ED100% | |||
| Max.coil temperature | ℃ | 150 | |||
| Valve protection to EN 60529 | IP 65 | ||||
| 2) Control electronics | |||||
| Amplifier | 4WRA...L2X | VT-VSPA2-...-L2X | |||
| 4WRAE...L2X | Integrated in the valve (OBE) | ||||
| Supply voltage | Nominal voltage | VDC | 24 | ||
| Lower limiting value | V | 21/22 (4WRA), 19 (4WRAE) | |||
| Upper limiting value | V | 35 | |||
| Amplifier power consumption | max | A | <1.8 | ||
| Impulse current | A | 3 | |||
Electrical connections, plug-in connectors
Integrated control electronics for type 4WRAE
.Integrated electronics (OBE) for type 4WRAE...L2X
Characteristic curves(measured with HLP46, oil =40°C +5°C )
Characteristic curves(measured with HLP46, oil =40°C +5°C )
Characteristic curves(measured with HLP46, oil =40°C +5°C)
Unit dimensions
Unit dimensions
Unit dimensions
Unit dimensions
