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DIRECTIONAL SPOOL VALVES, DIRECT OPERATED, WITH SOLENOID ACTUATION

WE…6/.B…VP1

Material #: R901460507

Model : 4WE 6 J5X/BW120RNVP1Z2

Price: $2,427.00

4/3-, 4/2- or 3/2-way version For intended use in potentially explosive atmosphere Porting pattern according to ISO 4401-03-02-0-05 Wet-pin AC or DC solenoids Electrical connection with individual connection or piping connection (NPT 1/2") With manual override

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4/3-, 4/2- or 3/2-way version For intended use in potentially explosive atmosphere Porting pattern according to ISO 4401-03-02-0-05 Wet-pin AC or DC solenoids Electrical connection with individual connection or piping connection (NPT 1/2") With manual override

Directional valves of type WE are solenoid-actuated directional spool valves. They control the start, stop and direction of a flow.

The directional valves basically consist of the housing (1), one or two solenoids (2), the control spool (3), and one or two return springs (4).

In the de-energized condition, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for impulse spools). The control spool (3) is actuated by wet-pin solenoids in hydraulic fluid (2).

To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with hydraulic fluid.

The force of the solenoid (2) acts via the plunger (5) on the control spool (3) and pushes the latter from its rest position to the required end position. This enables the necessary direction of flow from P → A and B → T or P → B and A → T.

After de-excitation of the solenoid (2), the return spring (4) pushes the control spool (3) back to its rest position.

A manual override (6) allows control spool (3) to be moved without solenoid energization.

 

Without spring return “O” (only possible with symbol D)

This version is a directional valve with two spool positions and two solenoids without detent. In the de-energized condition, there is no defined spool position.

 

Without spring return, with detent “OF" (Impulse spool, only possible with symbol D)

This version is a directional valve with two spool positions, two solenoids and one detent.

It alternately locks the two spool positions and the solenoid therefore does not need to be permanently energized.

 

Notice:

For design reasons, internal leakage, which may increase over the life cycle, is inherent to the valves.

Type 4WE 6 E5X/.B..NVP1Z2

Throttle insert "...B"

The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes, which exceed the performance limit of the valve.

01

02

03

04

05

06

07

08

09

10

11

12

13

WE

6

5X

/

B

N

VP1

Z2

/

01

3 main ports

3

4 main ports

4

02

Directional valve

WE

03

Size 6

6

04

Symbols e.g. E, G, J, D, Y, etc.; possible design see Circuit diagrams

05

Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions)

5X

06

With spring return

no code

Without spring return

O

Without spring return with detent

OF

07

High-power solenoid (wet-pin)

B

Voltage

08

Direct voltage 24 V

G24

Alternating voltage 120 V

W120R

09

With manual override

N

Explosion protection

10

NEC500, NEC502, CEC Anex J and CEC Section 18

VP1

For details, see information on explosion protection in Technical data

Electrical connection

11

Individual connection

Solenoid with terminal box and cable gland

Z2

For details of electrical connections, see Electrical connection

12

Without throttle insert

no code

Throttle Ø 0.8 mm

B08

Throttle Ø 1.0 mm

B10

Throttle Ø 1.2 mm

B12

Use with flows which exceed the performance limit of the valve (see Product description)

Seal material

13

NBR seals

no code

FKM seals

V

Observe compatibility of seals with hydraulic fluid used.

Notice:

The manual override cannot be allocated a safety function and may only be used up to a tank pressure of 50 bar.

For applications outside these parameters, please consult us!

general

Weight

With 1 solenoid

kg

3.5

With 2 solenoids

kg

5.8

Installation position

Any

Ambient temperature range

°C

-20 … +60

Storage temperature range

°C

+5 … +40

MTTFD values according to EN ISO 13849 1)

Years

150

Surface protection

Valve body

Galvanized

Solenoid

Galvanized

Maximum storage time

yrs

1
1) For further details, see data sheet 08012

hydraulic

Maximum operating pressure

Port P

bar

350

Port A

bar

350

Port B

bar

350

Port T 1)

bar

210

Maximum flow

l/min

70

Hydraulic fluid

see table below

Hydraulic fluid temperature range

NBR seals

°C

-20 … +70

FKM seals

°C

-15 … +70

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid 2)

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

Maximum surface temperature

see Information on explosion protection
1) With symbols A and B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure.
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

Data sheet

Mineral oil

HL, HLP, HLPD

NBR, FKM

DIN 51524

90220

Bio-degradable

Insoluble in water

HETG

FKM

ISO 15380

90221

HEES

FKM

Soluble in water

HEPG

FKM

ISO 15380

Flame-resistant

Water-free

HFDU, HFDR

FKM

ISO 12922

90222

Containing water

HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)

1)

NBR

ISO 12922

90223

1) Maximum ambient temperature for individual operation 50 °C and 50 % duty cycle, for manifold operation 40 °C and 50 % duty cycle.

Important notice on hydraulic fluids:

For more information and data on the use of other hydraulic fluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Ignition temperature > 180 °C Flame-resistant – containing water: Maximum pressure differential per control edge 50 bar Pressure pre-loading at the tank port >20% of the pressure differential, otherwise increased cavitation erosion Life cycle as compared to operation with mineral oil HL, HLP 30 … 100% Bio-degradable and flame-resistant: If these hydraulic fluids are used, small amounts of dissolved zinc may get into the hydraulic system (700 mg zinc per pole tube).

 

electrical

Voltage type

Direct voltage AC voltage 50/60 Hz

Available voltages

V

24 120

Voltage tolerance (nominal voltage)

%

± 10

Admissible residual ripple

%

< 5

Duty cycle/operating mode according to VDE 0580

S1 (continuous operation)

Switching time according to ISO 6403 1)

ON

ms

​20 … ​70 ​35 … ​90

OFF

ms

15 … 30 30 … 80

Maximum switching frequency

1/h

3600

Nominal power with ambient temperature 20 °C

W

20

Maximum power with 1.1 x nominal voltage and an ambient temperature of 20 °C

W

20.6

Protection class according to

NEMA 250

NEMA type 4X (with correctly installed electrical connection)

DIN EN 60529

IP 65 (with correctly installed electrical connection)
1) The switching times were determined at a hydraulic fluid temperature of 40 °C and a viscosity of 46 mm2/s. Deviating hydraulic fluid temperatures can result in different switching times. Switching times change dependent on operating time and application conditions.

Information on explosion protection

Area of application according to

NEC500 and CEC Annex J

Class I, Division 1, Groups B, C, D T4

NEC502 and CEC Section 18

Class II/III, Division 1, Groups E, F, G T4

Maximum surface temperature 1)

°C

130

Temperature class

T4

Type of protection valve solenoid

XP (explosion-proof); DIP (dust ignition protection)

FM certificate

US

3055770

Canada

3055770C

Ambient temperature range

°C

-20 … +60
1) Surface temperature > 50 °C, provide contact protection.

Special application conditions for safe application

The connection line requires a minimum temperature rating of 105 °C. When selecting the connection line, please observe the requirements regarding the temperature rating and avoid contact of the connection line with the solenoid surface. In case of valves with two solenoids, maximally one of the solenoids may be energized at a time. In case of bank assembly, the maximum ambient temperature may not exceed 50 °C. Ensure unobstructed heat dissipation at the solenoid. The solenoid may not be covered or exposed to direct sunlight. For use of the valve in the intended explosion protection atmosphere, a conduit seal has to be installed in the pipeline within 450 mm (downstream of the valve solenoid).

(measured with HLP46, ϑOil = 40 °C ±5 °C)

Δp-qV characteristic curves

Symbol

Direction of flow

P – A

P – B

A – T

B – T

B – A

P – T

D, Y

5

5

3

3

E

3

3

1

1

J

1

1

2

1

G

6

6

9

9

8

C

3

3

5

3

H

2

1

2

2

T

8

8

4

4

Other symbols upon request

Performance limits (measured with HLP46, ϑOil = 40 °C ± 5 °C)

Notice:

The specified performance limits are valid for use with two directions of flow (e. g. from P → A and simultaneous return flow from B → T).

Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P → A while port B is blocked).

In such cases, please consult us.

The performance limits were determined when the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.

Direct voltage "G24"

Characteristic curve

Symbol

1

J

2

G

3

E

4

D

5

C

6

H

7

Y

8

D/OF

9

T

AC voltage “W120R”

Characteristic curve

Symbol

1

J

2

G

3

E

4

D

5

C

6

H

7

Y

8

D/OF

Symbols

1) Example:
Symbol E with spool position "a" ordering code ..EA..

Notices:

Representation according to DIN ISO 1219-1.

Hydraulic interim positions are shown by dashes.

Circuit diagram

The FM-tested valve solenoid of the valve is equipped with a connection compartment and an NPT connection thread (NPT 1/2") for pipelines.

The connection is polarity-independent.

Notice:

When establishing the electrical connection, the protective grounding conductor (PE) has to be connected properly.

Connectable operating voltage conductors and protective grounding conductors

Function

Maximum connectable line cross-section

Terminal area, rated connection (min. 0.13 mm2)

2.5 mm2

Conductor connection cross-section AWG (min. AWG 26)

AWG 14

Single-wire, min. H05(07) V-U 0.13 mm2

2.5 mm2

Finely stranded, min. H05(07) V-K 0.13 mm2

2.5 mm2

Wire end ferrule with collar DIN 46 228/4 (min. 0.25 mm2)

1.5 mm2

Wire end ferrule according to DIN 46 228/1 (min. 0.25 mm2)

1.5 mm2

Connection line

Line type

non-armored cables and lines (outer sheath sealing)

Temperature range

°C

-20 … ≥ +110

Over-current fuse and switch-off voltage peaks

Voltage data in the valve type code

Nominal voltage valve solenoid

Rated current valve solenoid

Recommended pre-fuse characteristic: medium time-lag according to DIN 41571

Maximum voltage value when switching off

Rated current

Interference protection circuit

G24

24 V DC

0.899 A DC

100 mA

–36 V

1.65 A

Suppressor diode bi-directional

W120R

120 V AC

0.221 A DC

200 mA

0.384 A

Bridge rectifier 1000 V

Notice:

Corresponding to the rated current, a fuse according to DIN 41571 and EN / IEC 60127 has to be connected upstream of every valve solenoid (max. 3 x IG).

The shut-off threshold of the fuse has to match the prospective short-circuit current of the supply source.

The prospective short-circuit current of the supply source may amount to a maximum of 1500 A.

This fuse may only be installed outside the potentially explosive area or must be of an explosion-proof design.

When inductivities are switched off, voltage peaks result which may cause faults in the connected control electronics.

The voltage peak must be damped by a suitable external circuitry. We recommend a circuitry with a suppressor diode with a limitation voltage of approx. 50 V.

Dimensions in mm

Required surface quality of the valve contact surface

1

Solenoid

2

Terminal box

3

Manual override "N"

4

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

5

Cap for valves with one solenoid

6

Name plate

7

Porting pattern according to ISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order)

8

Piping connection NPT 1/2”

Valve mounting screws (separate order)

For reasons of stability, use exclusively the following valve mounting screws:

4 hexagon socket head cap screws

ISO 4762 - M5 x 50 - 10.9-CM-Fe-ZnNi-5-Cn-T0-H-B

(friction coefficient μtotal = 0.09 … 0.14);

material no. R913043758

 

Subplates (separate order) with porting pattern according to ISO 4401-03-02-0-05 , see data sheet 45100.

Installation conditions (dimensions in mm)

Single assembly

Bank assembly

Subplate dimensions

Minimum dimensions:
Length ≥ 64, width ≥ 58, height ≥ 25

Minimum cross-section:
Height ≥ 60, width ≥ 85

Thermal conductivity of the subplate (EN-GJS-500-7)

≥ 38 W/mK

Minimum distance between the longitudinal valve axes

see schematic diagram below

Schematic diagram

Dimensions in mm

Notice:

Observe the "Special application conditions for safe application" see technical data.