Артикул: RX7593
High-response directional valves, pilot operated, with integral electronics (OBE) and electrical position feedback 4WRDE -5X
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Description
- Size 32 … 35
- Component series 5X
- Maximum operating pressure 350 bar
- Maximum flow 3000 l/min
- Nominal flow 400 … 1000 l/min
Features
- 4/3-way version
- Subplate mounting
- Porting pattern according to ISO 4401
- Position sensing of the main control spool by means of an inductive position transducer
- 2-stage pilot control valve type 4WS2EM 6-2X/...
- It is particularly suitable for the position, velocity, pressure and force control with high requirements on the dynamics and the response sensitivity
Product description
Valves of type 4WRDE are 3-stage directional control valves. They control the quantity and direction of a flow and are mainly used in control loops for different tasks.
They consist of the following assemblies:
- The 2-stage pilot control valve consisting of the control motor (1) and a hydraulic amplifier (5) designed as nozzle flapper plate valve and the control spool socket unit (6) as flow amplifier stage for actuating the 3rd stage (7).
- The 3rd stage (7) for flow control
- An inductive position transducer (8) the core (9) of which is attached to the control spool (10) of the 3rd stage.
- The 3rd stage is basically set-up of modules of our proportional valves.
- With V control spools, the control edges of control spools and housings are ground in to each other.
- When the pilot control valve or the control electronics are exchanged, they are to be re-adjusted. All adjustments may be implemented by instructed experts only.
- The pilot control valve may only be maintained by Bosch Rexroth employees. An exception to this is the replacement of the filter and the sealing according to accessories list. It has to be ensured that during the assembly, the sealing is properly seated and the plug screw is tightened. The tightening torque for the plug screw is 30 Nm.
The position of the control spool (10) is measured by an inductive position transducer (8). The signal linking of the valve control loop, the supply of the position measurement system and the control of the pilot control valve are carried out via control electronics integrated in the valve. The voltage difference created by the command/actual value comparison is amplified in the control electronics and supplied to the 1st stage of the valve as control deviation. This signal deflects the flapper plate (2) between the two control nozzles (3.1, 3.2). This creates a pressure differential between the two control chambers (11.1, 11.2). The control spool (4) is moved and releases a corresponding flow into the control chamber (12.1 or 12.2). The control spool (10) with the core (9) of the inductive position transducer (8) attached to it is displaced until the actual value corresponds to the command value. In the compensated condition, the control spool (10) is held in the position specified by the command value. The control spool stroke is proportional to the command value. For the control of the flow, a corresponding control opening results, depending on the position of the control spool (10) to the control edges (13), to which the flow is proportional. The valve dynamics are optimized via the electric gain. The control electronics is integrated in the valve (oscillator, demodulator).
Valve particularities
Notice!
Changes in the zero point may result in damage to the system and may only be implemented by instructed specialists!
Type code
01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | |||
4 | WRDE | ‒ | 5X | / | 6L | 24 | K9 | / | R | * |
01 | 4 main ports | 4 |
02 | High-response directional valve | WRDE |
03 | Size 10 | 10 |
Size 16 | 16 | |
Size 25 | 25 | |
Size 27 | 27 | |
Size 32 | 32 | |
Size 35 | 35 | |
04 | Symbols; for the possible version, see "Symbols/Circuit diagrams" | E; E1-; W; W1-; V; V1-; Q2 |
Nominal flow | ||
05 | Size 10 | |
25 l/min | 25 1) | |
50 l/min | 50 | |
90 l/min | 100 | |
Size 16 | ||
125 l/min | 125 | |
200 l/min | 200 | |
Size 25 | ||
220 l/min | 220 | |
350 l/min | 350 | |
Size 27 | ||
500 l/min | 500 | |
Size 32 | ||
400 l/min | 400 | |
600 l/min | 600 | |
Size 35 | ||
1000 l/min | 1000 | |
Flow characteristic | ||
06 | Linear | L |
Linear with fine control range | P | |
07 | Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) | 5X |
Pilot control valve | ||
08 | Servo valve control NG6 (data sheet 29564) | 6L |
09 | Supply voltage 24 V | 24 |
Pilot oil flow | ||
10 | External pilot oil supply, external pilot oil return | no code |
Internal pilot oil supply, external pilot oil return | E | |
Pilot oil supply internal, pilot oil return internal | ET | |
External pilot oil supply, internal pilot oil return | T | |
Electrical connection | ||
11 | Without mating connector, with connector | K9 2) |
12 | Without directional sandwich plate valve | no code |
With directional sandwich plate valve 24 VDC, mating connector Z4 | WG152 2) | |
Seal material | ||
13 | NBR seals | M |
FKM seals | V | |
14 | R-rings | R |
15 | Further details in the plain text | * |
1) | Only with symbols E-, W- and V and with version “L”. | |
2) | Mating connectors (separate order) |
Technical data
general
Type | 4WRDE | ||
Size | 32 | 35 | |
Component series | 5X | ||
Installation position | preferably horizontal | ||
Earth | kg | 35.2 | 71 |
Storage temperature range | °C | -20 … +80 | |
Ambient temperature range | °C | -20 … +60 |
hydraulic (Measured with HLP46, ϑOil = 40±5 °C)
Type | 4WRDE | ||||
Size | 32 | 35 | |||
Maximum operating pressure | bar | 350 | |||
Maximum operating pressure | Port X | bar | 250 | ||
Maximum operating pressure 1) | Port P | External pilot oil supply | bar | 350 | |
Anschluss A | bar | 350 | |||
Port B | bar | 350 | |||
Maximum operating pressure | Port P | Internal pilot oil supply | bar | 250 | |
Anschluss A | bar | 250 | |||
Port B | bar | 250 | |||
Maximum return flow pressure | Port T | Internal pilot oil supply | bar | Pressure peaks <100 | |
Port T | External pilot oil supply | bar | 250 | ||
Port Y | Internal pilot oil supply | bar | Pressure peaks <100 | ||
Nominal flow 2) | l/min | 400 600 | 1000 | ||
Zero flow 3) | Main stage | Symbol V, V1- | l/min | 10.7 | 12.8 |
Main stage and pilot control valve | l/min | 11.7 | 13.8 | ||
Main stage | Symbol Q2- | l/min | 5.4 | 6.4 | |
Main stage and pilot control valve | l/min | 6.3 | 7.4 | ||
Maximum flow | l/min | 1600 | 3000 | ||
Pilot flow 4) | l/min | 32.5 | 45.3 | ||
Hydraulic fluid temperature range | -20 … +80 °C | ||||
preferably | °C | +40 … +50 | |||
Viscosity range | mm²/s | 20 … 380 | |||
Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 5) | Pilot control valve | Class 18/16/13 according to ISO 4406 (c) | |||
Main stage | Class 20/18/15 according to ISO 4406 (c) | ||||
Hysteresis | % | ≤ 0.2 | |||
Response sensitivity | % | ≤ 0.1 |
1) | For a perfect system behavior, we recommend an external pilotoil supply for pressures above 210 bar. |
2) | Rated flow qVnom (complete valve) ±10% with valvepressure differential Δp = 10 bar and symbol V |
3) | At 100 bar |
4) | At port X or Y with stepped input signal from 0 to 100% (250 bar) |
5) | 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 | Data sheet |
Mineral oils | HL, HLP | NBR / FKM | DIN 51524 | 90220 |
Flame-resistant - containing water | HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) | NBR | ISO 12922 | 90223 |
Important information on hydraulic fluids: For more information and data on the use of other hydraulicfluids, please refer to the data sheets above or contact us. The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). | Flame-resistant - containing water: |
electrical
Type | 4WRDE | ||
Voltage type | Direct voltage | ||
Type of signal | analog | ||
Power supply | Nominal voltage | VDC | 24 |
Lower limit value | VDC | 20 | |
Upper limit value | VDC | 28 | |
Protection class according to DIN EN 60529 | IP65 (If a suitable and a correctly mounted mating connector are used.) | ||
Zero point calibration 1) | % | ≤ 1 | |
Zero shift upon change of | Hydraulic fluid temperature | % | ≤ 0.2 |
Operating pressure | %/100 bar | ≤ 0.5 | |
Return flow pressure | %/20° C | ≤ 0.7 | |
Control electronics | Integrated in the valve |
1) | Related to the pressure-signal characteristic curve (symbol V), ex works |
Diagrams/characteristic curves
measured with HLP46, ν = 32 mm2/s and ϑOil = 40 °C ± 5 °C
Pressure-signal characteristic curve
Symbol V
Flow command value function
(at e.g. P → A / B → T and 10 bar pressure differential or P → A or A → T and 5 bar per control edge)
Version “L”
1 Symbol V | |
2 Symbol E or W |
Version "P"
1 Symbol V | |
2 Symbol E or W |
Version Q2 with characteristic curve P and L
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Transition function with stepped electric input signals
Size 32
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Frequency response
Size 32
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Flow/load function with maximum valve opening (tolerance ±10 %)
Size 32
Transition function with stepped electric input signals
Size 35
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Frequency response
Size 35
Measured with:
- Pilot control valve: Port X = 140 bar
- Main stage: Port P = 10 bar
Flow/load function with maximum valve opening (tolerance ±10 %)
Size 35
Symbols/Circuit diagrams
With Symbol E1-, W1- and V1-: | |
P → A: qv P → B: qv/2 | B → T: qv/2 A → T: qv |
Notice: |
Version | simple | Detailed |
"no code" | ||
"E" | ||
"ET" | ||
"T" | ||
1 Pilot control valve 2 Main valve 3 Directional sandwich plate valve 4 Integrated electronics (OBE) |
Electrical connection
Pin assignment | Contact | Assignment interface "A1" |
Power supply | A | 24 VDC (20 ... 28 VDC); full bridge rectification smoothened with 2200 μF; Imax = 270 mA |
B | 0 V | |
Enable 1) (activates the valve control loop) | C | 4 ... 24 VDC |
Differential amplifier input (command value) | D | ±10 V 2; 3) |
E | ||
Actual value | F | ±10 V (to contact B) |
1) | With applied hydraulic pressure and deactivated enable, the control spool of the main stage is moved into the end position and the cylinder axis leaves its position at maximum velocity. If a WG152 directional sandwich plate valve is used between pilot control valve and main stage, the control chambers are unloaded from the pilot control valve to the main control spool and the control spool of the main stage is centered in central position or in a preferred position by springs. As a consequence, the cylinder axis leaves its position at minimum velocity. | |
2) | Positive command value at D vis-à-vis E results in flow from P to A at the main stage! | |
3) | Current input ±10 mA as option, input resistance 1 kΩ; in the ordering code, extend the type by "-280". |
Block diagram of the integrated electronics (OBE)
Notices:
- Electrical signals provided via control electronics (e. g. actual value or enable) must not be used for switching off safety-relevant machine functions.
Dimensions
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P and T (T1) |
7 | Identical seal rings for ports X and Y |
8 | Machined valve contact surface; porting pattern according to ISO 4401-05-05-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P, and T |
7 | Identical seal rings for ports X, Y, L |
8 | Machined valve contact surface; Porting pattern according to ISO 4401-07-07-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
11 | Locking pin |
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P, and T |
7 | Identical seal rings for ports X, Y, L |
8 | Machined valve contact surface; Porting pattern according to ISO 4401-08-08-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
11 | Locking pin |
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P, and T |
7 | Identical seal rings for ports X, Y, L |
8 | Machined valve contact surface; Porting pattern according to ISO 4401-08-07-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
11 | Locking pin |
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Size 32
Dimensions in mm
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P, and T |
7 | Identical seal rings for ports X, Y, L |
8 | Machined valve contact surface; Porting pattern according to ISO 4401-10-09-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
11 | Locking pin |
Subplates (separate order) with porting pattern according to ISO 4401-10-09-0-05 see data sheet 45100.
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Valve mounting screws (separate order):
6 hexagon socket head cap screws ISO 4762 - M20 x 80 - 10.9-flZn-240h-L
Tightening torque MA = 340 Nm± 20 %, material no. R901035246
Notice:
For reasons of stability, exclusively these valve mounting screws may be used. The tightening torque of the hexagon socket head cap screws refers to maximum operating pressure!
Size 35
Dimensions in mm
Required surface quality of the valve contact surface |
1 | Pilot control valve |
2 | Directional sandwich plate valve (only included with version “WG152”) |
3 | Cabling |
4 | Main stage |
5 | Name plate |
6 | Identical seal rings for ports A, B, P, and T |
7 | Identical seal rings for ports X, Y, L |
8 | Machined valve contact surface; Porting pattern according to ISO 4401-10-09-0-05 |
9 | Space required to remove the mating connector |
10 | Mating connector, separate order |
11 | Locking pin |
Subplates (separate order) with porting pattern according to ISO 4401-10-09-0-05 see data sheet 45100.
Notice:
The dimensions are nominal dimensions which may be subject to tolerance deviations.
Valve mounting screws (separate order):
6 hexagon socket head cap screws ISO 4762 - M20 x 100 - 10.9-flZn-240h-L
Tightening torque MA = 360 Nm± 20 %, material no. R913000386
Notice:
For reasons of stability, exclusively these valve mounting screws may be used. The tightening torque of the hexagon socket head cap screws refers to maximum operating pressure!
Accessories
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
- For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector”
- Mating connectors for valves with one or two solenoids (individual connection)
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
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