Артикул: RX7607
4/2 and 4/3 proportional directional valves, direct operated, wit electrical position feedback, with integrated electronics (OBE) 4WREE
Доступно к заказу
Цена по запросу
И выбери подходящего.
Description
- Size 6, 10
- Component series 2X
- Maximum operating pressure 315 bar
- Maximum flow 180 l/min
Features
- Direct operated proportional directional valve with electrical position feedback and integrated electronics (OBE)
- 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
Product description
Type 4WREE...-2X/...
The 4/2 and 4/3 proportional directional valves are designed as direct operated devices in plate design. Operation by means of proportional solenoids with central thread and detachable coil. The solenoids are controlled via integrated electronics.
Set-up:
The valve basically consists of:
Housing (1) with connection surface
Control spool (2) with compression springs (3 and 4) and spring plates (5 and 6)
Solenoids (7 and 8) with central thread
Position transducer (9)
Integrated electronics (13)
Electrical zero point adjustment (12), accessible via Pg7
Function:
With de-energized solenoids (7 and 8), central position of the control spool (2) due to compression springs (3 and 4) between the spring plates (5 and 6)
Direct actuation of the control spool (2) by the control of one proportional solenoid, e. g. solenoid "b" (8)
→ Control spool (2) is moved to the left in proportion to the electrical input signal
→ Connection from P to A and B to T via orifice-type cross-sections with progressive
flow characteristics
Switching off of the solenoid (8)
→ Control spool (2) is returned to the central position by the compression spring (3)
In the de-energized state, the control spool (2) is held in a mechanical central position by the return springs of the solenoids. With control spool symbol "V", this position does not correspond to the hydraulic central position! When the electric valve control loop is closed, the control spool is positioned in the hydraulic central position.
Important notice:
The PG fitting (11) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!
Valve with two spool positions: (Type 4WREE...A...)
The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid “a” (7). Instead of the 2nd proportional solenoid, a plug screw (10) is installed.
Notice:
Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.
Notice:
The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | |||
| 4 | WREE | ‒ | 2X | / | G24 | K31 | / | * |
| 01 | 4 main ports | 4 |
| 02 | Proportional directional valve with electrical position feedback and integrated electronics (OBE) | WREE |
| 03 | Size 6 | 6 |
| Size 10 | 10 | |
| 04 | Symbols; for the possible version, see "Symbols/Circuit diagrams" | E; E1-; V; V1-; W; W1-; EA; WA |
| Rated flow NG6 | ||
| 05 | 4 l/min | 4 |
| 8 l/min | 8 | |
| 16 l/min | 16 | |
| 32 l/min | 32 | |
| Rated flow NG10 | ||
| 05 | 25 l/min | 25 |
| 50 l/min | 50 | |
| 75 l/min | 75 | |
| 06 | Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) | 2X |
| 07 | Supply voltage 24 V | G24 |
| Electrical connection | ||
| 08 | Connector DIN EN 175201-804 | K31 |
| Electrical interface | ||
| 09 | Command value ±10 V | A1 |
| Command value 4 to 20 mA | F1 | |
| Seal material | ||
| 10 | NBR seals | M |
| FKM seals | V | |
| 11 | Further details in the plain text | * |
Technical data
general
| Type | 4WREE | ||
| Size | 6 | 10 | |
| Installation position | any, preferably horizontal | ||
| Ambient temperature range | °C | -20 … +50 | |
| Storage temperature range | °C | -20 … +80 | |
| Weight | kg | 2.4 | 6.5 |
| MTTFD values according to EN ISO 13849 1) | y | 150 | |
| 1) | With control spool types E, E1, EA, W, W1, WA; in longitudinal control spool direction, there is sufficient positive overlap without shock/vibration load; observe the installation orientation with regard to the main direction of acceleration. |
hydraulic
| Size | 6 | 10 | ||
| Maximum operating pressure | bar | 315 | ||
| Maximum operating pressure | Port P | bar | 315 | |
| Port T | bar | 210 | ||
| Anschluss A | bar | 315 | ||
| Port B | bar | 315 | ||
| Maximum flow | l/min | 80 | 180 | |
| Nominal flow | l/min | 4 8 16 32 | 25 50 75 | |
| Hydraulic fluid | see table below | |||
| Hydraulic fluid temperature range | °C | -20 … +80 | ||
| preferably | °C | +40 … +50 | ||
| Viscosity range | mm²/s | 20 … 380 | ||
| preferably | mm²/s | 30 … 46 | ||
| Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) | Class 20/18/15 according to ISO 4406 (c) | |||
| Hysteresis | % | ≤ 0.1 | ||
| Range of inversion | % | ≤ 0.05 | ||
| Response sensitivity | % | ≤ 0.05 | ||
| Zero shift upon change of | Hydraulic fluid temperature | %/10 K | ≤ 0.15 | |
| Operating pressure | %/100 bar | ≤ 0.1 | ||
| 1) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
| Hydraulic fluid | Classification | Suitable sealing materials | Standards |
| Mineral oils and related hydrocarbons | HL, HLP | NBR / FKM | DIN 51524 |
| Flame-resistant - containing water | HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620) | NBR | ISO 12922 |
| Important information on hydraulic fluids: For more information and data on the use of other hydraulic fluids please contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. Flame-resistant - containing water: | |||
electrical
| Size | 6 | 10 | ||
| Voltage type | Direct voltage | |||
| Maximum current consumption | of the amplifier | A | 2 | |
| of the amplifier (impulse current) | A | 3 | ||
| Solenoid coil resistance | Cold value at 20 °C | Ω | 2.65 | 4.55 |
| Maximum hot value | Ω | 4.05 | 6.82 | |
| Actuated time | % | 100 | ||
| Maximum coil temperature 1) | °C | 150 | ||
| Protection class according to DIN EN 60529 | IP65 (If a suitable and a correctly mounted mating connector are used.) | |||
| Power supply | V | 24 | ||
| Supply voltage range | V | 19,4 … 35 | ||
| Earthing (GND) | V | 0 | ||
| Command value input | "A1" | V | ± 10 | |
| Command value input range | "F1" | mA | 4 … 20 | |
| Actual value output | "A1" | V | ± 10 | |
| Actual value output range | "F1" | mA | 4 … 20 | |
| 1) | Due to the surface temperatures occurring at solenoid coils, the European standards ISO 13732-1 and ISO 4413 need to be adhered to. |
Diagrams/characteristic curves
(measured with HLP46, ϑÖl = 40 ±5 °C)
Zero flow with central control spool position “V32”
NG6
Zero flow with central control spool position “V75”
NG10
Rated flow 4 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 8 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 16 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 32 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 25 l/min at a valve pressure differential of 10 bar
NG10
Rated flow 50 l/min at a valve pressure differential of 10 bar
NG10
Rated flow 75 l/min at a valve pressure differential of 10 bar
NG10
Transition function with stepped electric input signals (4/3 valve version; control spool E)
NG6
Frequency response (4/3 valve version, control spool V)
NG6
Transition function with stepped electric input signals (4/3 valve version; control spool E)
NG10
Frequency response (4/3 valve version, control spool V)
NG10
Load function with maximum valve opening;Rated flow 4, 8, 16 and 32 l/min;Control spool V
NG6
Load function with maximum valve opening;Rated flow 25, 50 and 75 l/min;Control spool V
NG10
Symbols/Circuit diagrams
Symbols
| With symbol E1-, V1- and W1-, the following applies: | |
| P → A: qvmax | B → T: qv/2 |
| P → B: qv/2 | A → T: qvmax |
| Notice: | |
Type 4WREE
Electrical connection
| Pin assignment | Contact | Assignment interface "A1" | Assignment interface "F1" |
| Power supply | A | 24 VDC (u(t) = 19,4 ... 35 V); Imax = 2 A | |
| B | 0 V | ||
| Reference potential actual value | C | Reference contact F; Re > 50 kΩ | Reference contact F; Re < 10 Ω |
| Differential amplifier input (command value) | D | ±10 V command value; Re > 50 kΩ | 4 ...20 mA command value; Re > 100 Ω |
| E | Reference potential command value | ||
| Measuring output (actual value) | F | ± 10V actual value (limit load 5 mA) | 4 ... 20 mA actual value; maximum load resistance 300 Ω |
| PE | connected to cooling element and valve housing | ||
Command value:
Positive command value 0 ... +10 V (or 12 ... 20 mA) at D and reference potential at E cause flow from P → A and B → T.
Negative command value 0 ... –10 V (or 12 ... 4 mA) at D and reference potential at E cause flow from P → B and A → T.
With valves with 1 solenoid on side a (e.g. variant EA and WA), a positive command value 0 ... +10 V (or 4 ... 20 mA) at D and reference potential at E result in flow from P → B and A → T.
Actual value:
Actual value 0 ... +10 V (or 12 ... 20 mA) at F and reference potential at C result in flow from P → A and B → T.
Actual value 0 ... –10 V (or 4 ... 12 mA) result in flow from P → B and A → T.
With valves with 1 solenoid, a positive actual value 0 ... +10V (or 4 ... 20 mA) at F and reference potential at C result in flow from P → B and A → T.
Connection cable: Recommendation:
up to 25 m cable length type LiYCY 7 x 0.75 mm²
up to 50 m cable length type LiYCY 7 x 1.0 mm²
External diameter see sketch of mating connector
Connect shield to PE only on the supply side.
Notice:
Electrical signals provided via control electronics (e. g. actual value) must not be used for switching off safety-relevant machine functions.
| 1 | Material number |
| 2 | Production order number |
| 3 | Date of production |
| 4 | Serial number |
| 5 | Type designation |
| 6 | Zero point setting |
| 7 | Ramp time setting |
Dimensions
4WREE 6
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 7 | Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA") |
| 8 | Identical seal rings for ports A, B, P, and T |
| 10 | Name plate |
| 11 | Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) |
| 12 | Integrated electronics (OBE) |
| 13 | Mating connector according to DIN EN 175201-804, separate order |
Recommended valve mounting screws (separate order):
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
tightening torque MA = 7 Nm ± 10%, material no. R913000064 or
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9
tightening torque MA = 8.9 Nm ± 10%
4WREE 10
Dimensions in mm
| 1 | Valve housing |
| 2 | Proportional solenoid "a" with inductive position transducer |
| 3 | Proportional solenoid "b" |
| 7 | Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA") |
| 8 | Identical seal rings for ports A, B, P and T (T1) |
| 10 | Name plate |
| 11 | Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 |
| 12 | Integrated electronics (OBE) |
| 13 | Mating connector according to DIN EN 175201-804, separate order |
Recommended valve mounting screws (separate order):
4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
tightening torque MA = 12.5 Nm ± 10 %, material no. R913000058 or
4 hexagon socket head cap screws ISO 4762 - M6 x 40 - 10.9
tightening torque MA = 15.5 Nm ± 10%
Accessories
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
Mating connectors for valves with round connector, 6-pole + PE
7P Z31
- For valves with round connector according to EN 175201-804, 6-pole + PE as well as 6-pole, compatible with VG 95328
Ordering codes
Currently eShop is not available. Please try again later.Currently 'Generic Selector' is not available. Please try again later.Downloads
Нет отзывов об этом товаре.