Compared with proportional pressure reducing valve 3DREPE6-2X, proportional pressure reducing valve 3DREPE6E-2X valve has similar appearance and principle, but the difference is that it has built-in amplifier and interface A1. The solenoids are controlled optionally via integrated control electronics. Huade’s 3DREPE6E-2X and Rexroth use the same quality standards. The performance can match Rexroth.
| Hydraulic | |||
| Valve type | HD-3DREP | HD-3DREPE | |
| Operating pressure range MPa | Port P | 2 to 10 for pressure stage 1.6 | |
| 3 to 10 for pressure stage 2.5 | |||
| 5 to 10 for pressure stage 4.5 | |||
| Port T | 0 to 3 | ||
| Max.flow L/min | 15(△p=5MPa) | ||
| Filter fineness (μm) | ≤20(preferably≤10) | ||
| Hysteresis (%) | ≤5 | ||
| Repeatability accuracy (%) | ≤1 | ||
| Response sensitivity (%) | ≤0.5 | ||
| Pressure fluid | Mineral oil, or phosphate ester | ||
| Viscosity range mm2/s | 20~ 380 | ||
| Pressure fluid temperature range ( ℃) | -20~+80 | ||
| Weight (Kg) | 2 | 2.2 | |
| Electrical | |||
| Electrical data, solenoid | |||
| Valve type | HD-3DREP | HD-3DREPE | |
| Voltage type | DC | DC | |
| Nominal voltage (V) | 24 | ||
| Max.current (A) | 1.5 | 2.5 | |
| Solenoid coil resistance (Ω) | Cold value at 20℃ | 4.8 | 2 |
| Max.warm value | 7.2 | 3 | |
| Duty (%) | 100 | ||
| Coil temperature ℃ | up to 150 | ||
| Protection | IP65 | ||
| Electrical, control electronics | |||
| Amplifier | HD-VT-VSPA2-50-1X/T1(With 1ramp time) | integrated control electronics | |
| HD-VT-VSPA2-50-1X/T5(With 5 ramp times) | |||
| Supply voltage | Nominal voltage VDC | 24 | |
| Lower limiting value V | 19 | ||
| Upper limiting value V | 35 | ||
| current consumption | Imax A | 1.8 | |
| Impulse current A | 4 | ||
Features:
▶ Directly controlled proportional valves for the control of the pressure and direction of a flow
▶Actuated via proportional solenoids with central thread and removable coil
▶Hand override, optional
▶Spring centered control spool
▶Type HD-3DREPE with integrated electronics, interface A1
▶External control electronics for type HD-3DREP:
▶Analogue amplifier type HD-VT-VSPA2-50-1X/...in Eurocard format
▶Digital amplifier type HD-VT-VSPD-1-1X/. ..in Eurocard format
▶Electrical amplifier type HD-VT-11118 of modular design
▶ Valve and proportional control electronics from a single source
Application:
Proportional pressure reducing valve 3DREP6E-2X is widely used in automatic control of hydraulic systems in various industries such as machine tools, light industry, metallurgy, and so on.
The 3-way pressure reducing valve type 3DREP6-2X...is directly actuated by proportional solenoids. They convert an electrical input signal into a proportional pressure output signal. The proportional solenoids are controllable wet pin DC solenoids with central thread and removable coil. The solenoids are controlled optionally via external control electronics(type 3DREP-2X)or by integrated control electronics(type 3DREPE-2X).
The valve mainly comprises of:solenoids(5 and 6),housing(1),control spool(2)with pressure measuring spools (3 and 4) and optional integrated valve electronics(7).
With the solenoids(5 and 6) de-energised the control spool(2)is held in its centre position by compression springs. The control spool (2)is directly actuated when one of the solenoids is energized.
E.g. by energizing solenoid (5):the pressure measuring spool(3)and control spool(2)move to the right in proportion to the electrical input signal. The connection from P to B and A to T is via orifice form cross-sections with progressive flow characteristics.
De-energisation of the solenoid (5):the control spool(2)is returned to its centre position by the compression springs. In the middle position the connections A and B to T are opened, therefore the pressure fluid can freely flow to tank. An optional hand overrides(9 or 10),makes is possible to move the control spool(2)without energising the solenoid.
The function of this version of the 2 position valve is basically the same as that of the valve with 3 switching position.
The 2 position valves are however only fitted with either solenoid 5 or 6. A plug (11)is fitted in place of the second solenoid
Symbols of Proportional Proportional Pressure Reducing Valve 3DREP6E-2X
Used in conjunction with other proportional valves
Package Of The Combination valve
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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