4/2 AND 4/3 DIRECTIONAL SHUT-OFF VALVES, INTERNALLY PILOT OPERATED, EXTERNALLY PILOT-OPERATED

Z4WEH 10

Material #: R900928990

Model : Z4WEH10E68-4X/6EG24N9ETK4/B1

Directional spool valve, pilot-operated Type of actuation: electro-hydraulic Functioning as shut-off through valve or shut-off short-circuit through valve P and T free flow in every spool position Porting pattern according to ISO 4401-05-04-0-05 Wet-pin DC or AC solenoids, optional Optional auxiliary operating device Electrical connection as individual or central connection, see RE 23178 Switching time adjustment, optional Stroke setting at main spool, optional Inductive position switch and proximity sensors (contactless)

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Directional spool valve, pilot-operated Type of actuation: electro-hydraulic Functioning as shut-off through valve or shut-off short-circuit through valve P and T free flow in every spool position Porting pattern according to ISO 4401-05-04-0-05 Wet-pin DC or AC solenoids, optional Optional auxiliary operating device Electrical connection as individual or central connection, see RE 23178 Switching time adjustment, optional Stroke setting at main spool, optional Inductive position switch and proximity sensors (contactless)

component side

plate side

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

Z4

WEH

10

4X

/

K4

*

01

Z4

Type of actuation

02

electro-hydraulic

WEH

03

Size 10

10

Symbols

04

see symbols

05

Component series 40 to 49 (40 to 49: unchanged installation and connection dimensions)

4X

Pilot control valve

06

High-power valve (RE 23178)

6E 1)

07

Direct voltage 24 V

G24 1)

Alternating voltage 230 V, 50/60 Hz

W230 1)

DC voltage 205 V 50/60 Hz

G205 1;2)

For other voltages, frequencies and electric data, see data sheet RE 23178

08

Without manual override

no code

With manual override

N1)

With concealed manual override (standard)

N9 1)

09

External pilot oil supply, external pilot oil return

no code

Internal pilot oil supply, internal pilot oil return (standard)

ET

External pilot oil supply, internal pilot oil return

T

(for type Z4WH... only "no code" available!)

10

without switching time adjustment

no code

Switching time adjustment as supply control

S

Switching time adjustment as discharge control

S2

Electrical connection

1)

11

Without mating connector, individual connection with connector according to DIN EN 175301-803

K43)

For further electrical connections, see RE 23178

Spool position monitoring

12

Without position switch

no code

Monitored spool position "a"

QMAG24

Monitored spool position "b"

QMBG24

Monitored spool position "a" and "b"

QMABG24

13

No additional details

Without slash

Additional details

/

Stroke setting

14

Without stroke setting

no code

Stroke setting on side A and B

10

Stroke setting on side A

11

Stroke setting on side B

12

For more information, see stroke setting, mounting options

Throttle insert

1)

15

Without throttle insert

no code

Throttle Ø 0.8 mm [0.0315 inch]

B08

Throttle Ø 1.0 mm [0.0394 inch]

B10

16

Without pressure reducing valve

no code

With pressure reducing valve (use for pilot pressure >250 bar)

D3 1;4)

Seal material

17

NBR seals

no code

FKM seals

V

Other seals on request

Observe compatibility of seals with hydraulic fluid used.

18

Further details in the plain text

*

1) For connection to the AC voltage mains, a DC solenoid must be used, which is controlled via a rectifier (see table).
For individual connection, a mating connector with integrated rectifier can be used (separate order).
2) Mating connectors (separate order).
3) Version "D3" requires installation of a throttle insert "B08" in port P of the pilot control valve!

AC voltage mains (admissible voltage tolerance ± 10%)

Nominal voltage of the DC solenoid in case of operation with alternating voltage

Ordering code

110 V - 50/60 Hz

120 V - 60 Hz

96 V

G96

230 V - 50/60 Hz

205 V

G205

Preferred types and standard units are contained in the EPS (standard price list).

general

Size

10

Weight

Valve with one solenoid

kg

4.2

Valve with two solenoids

kg

4.6

Switching time adjustment

kg

0.8

3-way pressure reducing valve

kg

0.4

Plate for version "T"

kg

0.5

Installation position

any

Ambient temperature ranges (NBR seals)

°C

-30 … +50

Ambient temperature ranges (FKM seals)

°C

-20 … +50

hydraulic

Size

10

Maximum operating pressure

Port P

External pilot oil supply

bar

315

Internal pilot oil supply (without pressure reducing valve)

bar

250

Internal pilot oil supply (with pressure reducing valve)

bar

315

Anschluss A

bar

315

Port B

bar

315

Port T

with DC solenoid

bar

210

with AC solenoid

bar

160

Maximum flow

l/min

160

Minimum pilot pressure

bar

12

Pilot volume for switching process

cm³

1.3

Hydraulic fluid 1)

see table

Hydraulic fluid temperature range (NBR seals)

°C

-30 … +80

Hydraulic fluid temperature range (FKM seals)

°C

-20 … +80

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)
1) The ignition temperature of the process and operating medium used must be over the maximum solenoid surface temperature.
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 oil

HL, HLP

NBR, FKM

DIN 51524

Fast bio-degradable hydraulic fluids

VDMA 24568

Environmentally compatible

Insoluble in water

HETG

NBR, FKM

HEES

FKM

Soluble in water

HEPG

NBR, FKM

Other hydraulic fluids on request

electrical

Switching time according to ISO 6403

At pilot pressure

bar

70 140 210

Voltage type

Direct voltage AC voltage Direct voltage AC voltage Direct voltage AC voltage

On

ms

65 - 60 - 55 -

ms

- 30 - 25 - 20

Off

ms

- 30 - 30 - 30

ms

30 - 30 - 30 -

Notices!

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for the operation, separate order, material no. R900024943). When the manual override is blocked, the actuation of the solenoid must be prevented! The simultaneous actuation of the solenoids must be prevented!

Inductive position switch type QM: electrical connection

electrical

Connection voltage (DC voltage)

V

24

Voltage tolerance (connection voltage)

+30 %/-15 %

Admissible residual ripple

%

≤ 10

Max. load capacity

mA

400

Switching outputs

PNP transistor outputs, load between switching outputs and GND

Pinout

1

V

24

2, 4

Switching output

mA

400

3

Earthing (GND)

V

0

The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.

For applications outside these parameters, please consult us!

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

Δp-qV characteristic curves

E62

Version "ET"

E62

Version "T"

E63

Version "ET"

E63

Version "T"

E68

Version "ET"

E68

Version "T"

E501)

Version "ET"

1) Opening cross-section in spool position "a" (A2 → B2) = 50 mm2

E50

Version "T"

1) Opening cross-section in spool position "a" (A2 → B2) = 50 mm2

E51

Version "ET"

E51

Version "T"

E521)

Version "ET"

1) Opening cross-section in spool position "b" (A2 → B2) = 35 mm2

E52

Version "T"

1) Opening cross-section in spool position "b" (A2 → B2) = 35 mm2

component side

plate side

Inductive position switch type QM Switching logics

Version QMA

(Position switch on side B, monitored spool position of the main stage "a")

Version QMA

(Position switch on side B, monitored spool position of the main stage "a")

Version QMB

(Position switch on side A, monitored spool position of the main stage "b")

Version QMB

(Position switch on side A, monitored spool position of the main stage "b")

version QMAB

(Position switch on side A and B, monitored spool position "a" and "b")

Version QM0

(Position switch on side A and B, monitored spool position "0")

1) No signal change at the position switch on side B with spool position "a"
2) No signal change at the position switch on side A with spool position "b"

Version QM0

(Position switch on side B, monitored spool position of the main stage "0")

Version QM0

(Position switch on side A, monitored spool position of the main stage "0")

Dimensions in mm

1

Name plate complete valve

2

Name plate pilot control valve

3

Main valve

4

Sandwich plate for external pilot control (use for operating pressure > 210 bar)

5

Pressure reducing valve "D3" (to be used for pilot pressures above 250 bar)Material no.:NBR seals: R900323180FKM seals: R900323664

6

Space required to remove the mating connector

7

Switching time adjustment (throttle check valve); dependent on supply or discharge control installation position (representation: supply control)

8

R-ring plate

9

Pilot control valve- Type 4WE 6 J.. at symbol E62- Type 4WE 6 Y.. at symbol E50, E51, E52, E63, E68Dimensions () for valve with AC solenoid

10

Dimension for valve without manual override

11

Dimension for valve with manual override "N";Dimensions () for valve with AC solenoid

12

Dimension for valve with concealed manual override "N9"; dimensions () for valve with AC solenoid without manual override

13

Solenoid "a" and "b" (rotatable by 90°)

14

Identical seal rings for ports A, B, P, TA and TB

15

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

17

Valve mounting bores Valve mounting screws (separate order) 4 hexagon socket head cap screws ISO 4762 - M6 - 10.9

18

Valve mounting screws (separate order)4 hexagon socket head cap screws ISO 4762 - M5 - 10.9

Notice!

Length and tightening torque of the valve mounting screws must be calculated according to the components mounted.

Mounting options

L1

L2

mm

mm

Stroke setting on side A and B 95 149
Stroke setting on side A 95 -
Stroke setting on side B - 149

Stroke setting, mounting options

The stroke of the main spool is limited by the stroke setting.

The piston stroke is shortened by untightening the lock nut (17) and clockwise rotation of the adjustment spindle (18). For this, the control chamber has to be depressurized.

Stroke 6 mm (1 rotation = 1 mm stroke)

17

Lock nut SW27

18

Adjustment spindle, internal hexagon SW5

Spool position monitoring

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Dimensions in mm

Inductive position switch type QM

Type Z4WEH 10
Dimensions in mm

Mounting options:

Monitored spool position

Ordering code

Position switch on side

„a“

„b“

"a" and "b"

„a“

QMAG24

X

„b“

QMBG24

X

"a" and "b"

QMABG24

X

Stroke setting, mounting options

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)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

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)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

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)

Data sheet

Spare parts & repair

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

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)

Data sheet

Spare parts & repair