4/2 AND 4/3 PROPORTIONAL DIRECTIONAL VALVES, DIRECT OPERATED, WITHOUT ELECTRICAL POSITION FEEDBACK,

4WRAE

Material #: R900930423

Model : 4WRAE10EA60-2X/G24N9K31/F1V

Direct operated proportional directional valve, without electrical position feedback, with integrated electronics (OBE) Control of the direction and magnitude of a flow 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

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Direct operated proportional directional valve, without electrical position feedback, with integrated electronics (OBE) Control of the direction and magnitude of a flow 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

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) Solenoids (5 and 6) with central thread Integrated electronics (7)

Function:

With de-energized solenoids (5 and 6), central position of the control spool (2) due to compression springs (3 and 4) Direct actuation of the control spool (2) by energization of one proportional solenoid, e. g. energization of solenoid "b" (6) 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 (6) Control spool (2) is returned to the central position by the compression spring (3)

Valve with two spool positions (type 4WRA...A...):

The function of this valve version basically corresponds to the valve with three spool positions. This 2 spool position valve is, however, only equipped with solenoid “a”. Instead of the 2nd proportional solenoid, there is a plug screw (8.1) with NG 6 or a cover (8.2) with NG10.

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.

01

02

03

04

05

06

07

08

09

10

11

12

4

WRAE

2X

/

G24

/

*

01

4 main ports

4

02

Proportional directional valve with integrated electronics

WRAE

03

Size 6

6

Size 10

10

04

Symbols; for the possible version, see "Symbols/Circuit diagrams"

E; E1-; W; W1-; EA; WA

Rated flow NG6

05

7 l/min

7

15 l/min

15

30 l/min

30

Rated flow NG10

05

30 l/min

30

60 l/min

60

06

Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)

2X

07

Supply voltage 24 V

G24

Special type of protection

08

Without special type of protection

no code

Sea water-resistant

J 1)

Electrical connection

09

Connector DIN EN 175201-804

K31 2)

Electrical interface

10

Command value ±10 V

A1

Command value 4 to 20 mA

F1

Seal material

11

NBR seals

M

FKM seals

V

12

Further details in the plain text

*

1)

Electrical protection classes on request

2)

Only with NG6: only indicate "K31" for version “J”!

For applications outside these parameters, please consult us!

general

Type

4WRAE

Size

6 10

Installation position

any, preferably horizontal

Ambient temperature range

°C

-20 … +50

Storage temperature range

°C

-20 … +80

Weight

kg

2.2 6.8

hydraulic

Size

6 10

Maximum operating pressure

bar

315

Maximum operating pressure

Port P

bar

315

Port T

bar

210

Port A

bar

315

Port B

bar

315

Maximum flow

l/min

42 75

with double flow

l/min

80 140

Nominal flow

l/min

7
15
26
30
60

Hydraulic fluid 1)

Mineral oil (HL, HLP) to DIN 51524

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) 2)

Class 20/18/15 according to ISO 4406 (c)

Hysteresis

%

≤ 5

Range of inversion

%

≤ 1

Response sensitivity

%

≤ 0.5
1) Additional hydraulic fluids upon request
2) 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

Important information on hydraulic fluids:

For more information and data on the use of other hydraulic fluids please contact us.

electrical

Size

6 10

Voltage type

Direct voltage

Maximum solenoid current

A

2.5

Maximum current consumption

of the amplifier

A

1.8

of the amplifier (impulse current)

A

3

Solenoid coil resistance

Cold value at 20 °C

Ω

2

Maximum hot value

Ω

3

Actuated time

%

100

Maximum coil temperature 1)

°C

+ 150

Power supply

VDC

24

Supply voltage range

V

19 … 35

Command value input

"A1"

V

± 10

Command value input range

"F1"

mA

4 … 20
1) Due to the surface temperatures occurring at the solenoid coils, the European standards ISO 13732-1 and EN 982 need to be adhered to.

(measured with HLP46, ϑÖl = 40 ±5 °C)

Rated flow 7 l/min at a valve pressure differential of 10 bar

NG6

Rated flow 15 l/min at a valve pressure differential of 10 bar

NG6

Rated flow 30 l/min at a valve pressure differential of 10 bar

NG6

Transition function with stepped electric input signals

NG6

Performance limit rated flow 7 l/min

NG6

Performance limit rated flow 15 l/min

NG6

Performance limit rated flow 30 l/min

NG6

Rated flow 30 l/min at a valve pressure differential of 10 bar

NG10

Rated flow 60 l/min at a valve pressure differential of 10 bar

NG10

Transition function with stepped electric input signals

NG10

Performance limit rated flow 30 l/min

NG10

Performance limit rated flow 60 l/min

NG10

Symbols

With control spool symbol E1- and W1-, the following applies:

P → A: qvmax

B → T: qv/2

P → B: qv/2

A → T: qvmax

Notice:
In the zero position, control spool symbols W and WA have a connection from A → T and from B → T with approx. 3% of the relevant nominal cross-section.

Type 4WRAE

Type 4WRAE...EA;Type 4WRAE...WA

Pin assignment

Contact

Signal

Power supply

A

24 VDC (19...35 VDC)

B

GND

C

cannot be used 1)

Differential amplifier input (command value)

D

Command value (±10 V / 4...20 mA)

E

Reference potential

F

cannot be used 1)

1)

Contacts C and F must not be connected!

Command value:
Positive command value (0...10 V or 12...20 mA) at D and reference potential at E result in flow from P → A and B → T.
Negative command value (0...-10 V or 12...4 mA) at D and reference potential at E result in flow from P → B and A → T.
With valves with solenoid on side “a” (control spool variant EA and WA), a positive command value at D and reference potential at E (NG6: 4...20 mA and NG10: 12...20 mA) result in flow from P → B and A → T.
Connection cable: Recommendation:
up to 25 m cable length type LiYCY 5 x 0.75 mm²
up to 50 m cable length type LiYCY 5 x 1.0 mm²
External diameter 6.5 … 11 mm
Connect shield on PE only on the supply side

4WRAE 6

Dimensions in mm

1

Valve housing

2

Proportional solenoid "a"

3

Proportional solenoid "b"

4

Mating connector according to DIN EN 175201-804, separate order

5

Name plate

6

Identical seal rings for ports A, B, P, and T

7

Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA")

8

Integrated electronics (OBE)

9

Space required for the connection cable and to remove the mating connector

10

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole)
Deviating from the standard:
- without locating hole "G"
- ports P, A, B and T with Ø8 mm

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%

4WRAE 10

Dimensions in mm

1

Valve housing

2

Proportional solenoid "a"

3

Proportional solenoid "b"

4

Mating connector according to DIN EN 175201-804, separate order

5

Name plate

6

Valve bleed screw: Notice: Valves are bled prior to delivery

7

Identical seal rings for ports A, B, P and T (T1)

8

Cover for valves with one solenoid (2 spool positions, version "EA" or "WA")

9

Integrated electronics (OBE)

10

Space required for the connection cable and to remove the mating connector

11

Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05
Deviating from the standard:
Port T1 with Ø11.2 mm

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%

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

Data sheet

Spare parts & repair