力士乐比例换向阀

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力士乐比例换向阀

1/18

4/2, 4/3 proportional directional valves, pilot operated,

without electrical position feedback

Type 4WRZ…XE...

Sizes 10, 16, 25, 32

Component series 7X

Maximum operating pressure 350 bar

Maximum flow 1600 l/min RE 29115-XE-B2/09.13 Replaces: 05.11

H7138

Information on the explosion protection:

– Area of application in accordance with the Explosion

Protection Directive 94/9/EC: II 2G

– Type of protection of the valve solenoid:

Ex e mb IIC T4 Gb according to

EN 60079-7:2007/EN 60079-18:2009

Special features of seawater-resistant valves

– The exterior of the valve housing is galvanically coated.

– The seawater resistance is defined by "J" in the order-

ing code.

ATEX units

For explosive areas

Part II Data sheet

What you need to know about these operating instructions

These operating instructions apply to the explosion-proof version of Rexroth valves and consist of the following three parts:

Part I General information 07010-X-B1

Part II Data sheet 29115-XE-B2

Part III Product-specific instructions 29115-XE-B3

You can find further information on the correct handling of Rexroth hydraulic products in our publication "General product informa-

tion on hydraulic products" 07008.

Operating instructions 29115-XE-B0

Actual product may differ

力士乐比例换向阀

Table of contents

Contents Page

Features 2

Symbols 2

Ordering code and scope of delivery 3

Function, section 4

Technical data 6

Information on the explosion protection 7

Control electronics 7

Electrical connection 8

Characteristic curves 9

Dimensions 13

Pilot oil supply 17

Features

– Pilot operated 2-stage proportional directional valves for

controlling the flow direction and size

– Spring-centered control spool

– Actuation by means of the pilot control valve (3-way pres-

sure reducing valve)

– Solenoid coil can be rotated by 90°

– For subplate mounting:

Porting pattern according to ISO 4401 - … (information

depending on the size)

Subplates available in FE/ZN version (see pages 13 to 16)

Symbols (simplified)

with electrohydraulic actuation

Type 4WRZ…-7X./…Pilot oil supply Type 4WRZ…A.-7X./…

X = external

Y = external a

Type 4WRZ…-7X./…ET…

Type 4WRZ…A.-7X./…ET…

a b X = internal

Y = internal b

力士乐比例换向阀

Ordering code and scope of delivery

Electro-hydraulic actuation = Z Size Size 10 = 10Size 16 = 16Size 25 = 25Size 32 = 32

Symbols T

P a

a 0b A B a 0

a 0T

P A B = E E1- = E3 = W6- W8-

= W9- = EA

= W6A

For control spools E1- and W8-:

P → A: q V max

B → T: q V /2P → B: q V /2

A → T: q V max For control spools E3- and W9-:

P → A: q V max

B → T: Blocked P → B: q V /2

A → T: q V max (differential circuit, piston top at port A)Important: In spool position "0", control spools W6-, W8-, W9-, W6A have a connec-tion from A → T and

B → T with approx. 2 % of the relevant nominal cross-section.

M = 1) NBR seals V =

FKM seals Important:

Observe compatibil-ity of seals with hydraulic

fluid used!D3 =

With pressure reducing

valve (preset)Pilot oil supply

and return

no code = Pilot oil supply external,pilot oil return external E = Pilot oil supply internal,pilot oil return external ET = Pilot oil supply internal,pilot oil return internal T =

Pilot oil supply external,pilot oil return internal For details, see page 17.

Surface protection

J =

Seawater-resistant, galvanically coated

XE =

Explosion protection, "increased safety",for details see information on the explosion protection,

page 7

Supply voltage of the control electronics

G24 = 24 V direct voltage

6E = Proportional solenoid

7X =

Component series 70 to 79

(70 to 79: Unchanged installation and connection dimensions)

Rated flow 25 = 25 l/min (size 10) 50 = 50 l/min (size 10) 85 = 85 l/min (size 10) 100 = 100 l/min (size 16)150 = 150 l/min (size 16) 220 = 220 l/min (size 25) 325 = 325 l/min (size 25)

360 = 360 l/min (size 32) 520 =

520 l/min (size 32)

Characteristic curves, see pages 9 to 12

4WRZ

7X 6E G24XE J D3

1) Suitable for mineral oils (HL, HLP) according to DIN 51524

Included in the scope of delivery:

Valve operating instructions with declaration of conformity in Part III

力士乐比例换向阀

Function, section

Type 3DREP 6..2X/..XE...

Pilot control valve type 3DREP 6…

The pilot control valve is a 3-way pressure reducing valve that

is actuated by a proportional solenoid. It converts an electrical

input signal into a proportional pressure output signal and is

used for all valves type 4WRZ ...

The proportional solenoids are controllable wet-pin DC sole-

noids. The solenoids are actuated by external control electronics.

Set-up:

The valve basically consists of:

– Housing (1) with connection surface

– Control spool (2) with pressure measuring pins (3 and 4)

– Solenoids (5 and 6) with central thread Functional description:The pressure in A or B is set by means of the proportional so-

lenoids. The amount of the pressure depends on the current.

With de-energized solenoids (5, 6), the control spool (2) is

held in the central position by means of the compression

springs (8). Ports A and B are connected with T so that the

hydraulic fluid can flow off to the tank without obstructions.

By actuating a proportional solenoid, e.g. solenoid "b" (5), the pressure measuring pin (4) and the control spool (2) with it are moved to the left. This opens the connection from P to A and B to T via orifice-type cross-sections with progressive flow characteristics. With the surface of the pressure measur-ing pin (3) the pressure that builds up in channel A acts on the control spool and against the solenoid force. The pres-sure measuring pin (3) is supported by the solenoid "a". If the pressure exceeds the value set at solenoid "b", the control spool (2) is pushed back against the solenoid force and con-nects A with T until the set pressure is achieved again. The pressure is proportional to the solenoid current.When the solenoid is switched off, the control spool (2) is re-turned to the central position by the compression springs (8).

Important:

If valves version 3DREP 6 C are used, only one solenoid may

be actuated at a time.Valve with two spool positions

(type 3DREP 6…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 "b" (5). Instead of

the 2nd proportional solenoid, there is a plug screw (7).Important:The tank line must not be allowed to run empty. With cor-responding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.

力士乐比例换向阀

T A P Y X

B Function, section

Pilot operated proportional directional valves

Type 4WRZ…-7X/..XE...

Valves of the type 4WRZ... are pilot operated 4-way direc-tional valves that are actuated by means of proportional sole-noids. Their function is to control the flow direction and size.Set-up:

The valve basically consists of:

– Pilot control valve (9) with proportional solenoids (5 and 6)– Main valve (10) with main control spool (11) and centering spring (12)Functional description:– With de-energized solenoids (5 and 6), the main control spool (11) is held in central position by means of a center-ing spring (12).– Actuation of the main control spool (11) by means of the pilot control valve (9) – the main control spool is proportion-ally moved – e.g. actuation of solenoid "b" (6)→ Displacement of the control spool (2) to the right, pilot oil reaches the pressure chamber (13) pilot control valve (9) and displaces the main control spool (11) proportionally to the electrical input signal to the left → Connection of P → A and B → T via orifice-type cross-

sections with progressive flow characteristics

– Pilot oil supply to the pilot control valve internally via port P or externally via port X

– Switching off the solenoid (6)

→ Control spool (2) and main control spool (11) are returned to central position

– Flow depending on spool position from P → A and

B → T or P → B and A → T.

Type 4WRZ…-7X/..XE...

力士乐比例换向阀

Technical data

general

Installation position Any, preferably horizontal Storage temperature range °C –20 … +50Ambient temperature range °C –20 … +60 Weight, maximum

Size 10kg 10Size 16kg 16Size 25kg 21Size 32

kg 45

Surface protection

Galvanized coating

hydraulic

Size

Operating pressure range

Pilot control valve Pilot oil supply external or internal

bar 30 … 31530 … 35030 … 35030 … 350Main valve bar Up to 315Up to 350Up to 350Up to 350Return flow pressure

Port T

(external pilot oil return)bar Up to 315Up to 250Up to 250Up to 150Port T

(internal pilot oil return)bar Up to 30Up to 30Up to 30Up to 30Port Y

bar Up to 30Up to 30Up to 30Up to 30Pilot volume

for switching process 0 → 100 %cm 3 1.7 4.61026.5Pilot flow at port X and Y

with stepped input signal 0 → 100 %l/min 3.5 5.5715.9Flow of the main valve l/min

Up to 170

Up to 460

Up to 870

Up to 1600

Hydraulic fluid

Mineral oil (HL, HLP) according to DIN 51524 Additional hydraulic fluids upon request!

Ignition temperature > 180 °C

Hydraulic fluid temperature range °C –20 ... +80 (NBR seals)°C –15 ... +80 (FKM seals)Viscosity range

mm 2/s

20 ... 380 (preferably 30 ... 46)

Maximum admissible degree of contamination of the hydraulic fluid

Class 17/15/12 1)Cleanliness class according to ISO4406 (c)Pilot control valve Main valve Class 18/16/13 1)

Hysteresis

≤ 6

1) The cleanliness classes specified for the components

must be adhered to in hydraulic systems. Effective filtra-tion prevents faults and at the same time increases the life cycle of the components. For the selection of the filters see /filter.

力士乐比例换向阀

Technical data

1) Surface temperature > 50 °C, provide contact protection 2) Important:

A monitoring circuit is to be provided for the monitoring of the solenoid current. We recommend operating the valves with the assemblies described herein.

Information on the explosion protection

Amplifier module for the control of explosion-proof pro-portional directional valves 4WRA...XE, 3DREP 6...XE and 4WRZ...XE

VT-MSPA2-200-1X/V0/0 according to data sheet 30228-200Module for monitoring and limiting the solenoid currents with proportional valves

VT-MUXA2-2-1X/V0/1A according to data sheet 30290

Control electronics 2)

electric

Voltage type Direct current or pulse-width modulated signal with a pulse voltage ≤ 28 V and a frequency ≥ 160 Hz up to max. 500 Hz Type of signal

Analog Maximum current per solenoid A 1.03Duty cycle %100Coil temperature

°C Up to 125

Area of application in accordance with the Explosion Protection Directive 94/9/EC II 2G Type of protection Valve according to EN 13463-1:2009 / EN 13463-5:2011

c T4 X

Type of protection Valve solenoid according to EN 60079-7:2007 / EN 60079-18:2009Ex e mb IIC T4 Gb 1)Type examination certificate Solenoid KEMA 02ATEX2240 X "IECEx Certificate of Conformity" Solenoid IECEx DEK 12.0068X

Special operating conditions for a safe application

– In case of bank assembly, only one solenoid of all valves may be energized at a time.

– In case of valves with two solenoids, maximally one of the solenoids may be energized at a time.

– Only direct current or a pulse-width modulated signal with a pulse voltage ≤ 28 V and frequency ≥ 160 Hz up to max. 500 Hz may be used.

力士乐比例换向阀

Electrical connection

3) Recommended pre-fuse

Characteristics medium time-lag according to DIN 41571, 1.25 A

Suppressor diode 47 V, 1.5 kW

+( )

(+)

DC/PWM

The type-examination tested valve solenoid is equipped with a terminal box and a type-tested cable gland.The connection is polarity-independent.

Important:

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

The shut-off threshold of the fuse has to match the prospec-tive 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 explosive area or must be of an explosion-proof design.

Cable gland Type approval II 2G Ex e IIC Gb Threaded connection

M20 x 1.5Protection class according to EN 60529IP66 1)

Line diameter mm 9 (11)

Sealing

Outer sheath sealing

Connection line Line type

Non-armored cables and lines (outer sheath sealing)Temperature range

°C –30 … > +110

1) If installed properly

Properties of the connection terminals

Position Function

Connectable line cross-section 1Operating voltage connection

Single-wire 0.75 … 2.5 mm 2Finely stranded 0.75 … 1.5 mm 22Connection for protective earthing conductor Single-wire max. 2.5 mm 2Finely stranded max. 1.5 mm 23

Connection for potential equalization conductor

Single-wire 4 … 6 mm 2Finely stranded 4 mm 2

力士乐比例换向阀

Characteristic curves size 10

(measured with control spools E, W6-, EA, W6A as well as HLP46, ?oil = 40 °C ± 5 °C)

100020050

15025051

4321000255075

1000

900

800700

600

500

470

150********

020

408060

23410075250

50020

406080100020

6080100

1?p = 10 bar constant

2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

1?p = 10 bar constant

2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

1?p = 10 bar constant 2?p = 20 bar constant

3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 25: Flow Ordering code 85: Flow Ordering code 50: Flow ?p = valve pressure differential according to DIN 24311 (inlet pressure p P minus load pressure p L minus return flow pressure p T )Transition function with stepped electric input signals

Current in mA →

F l o w i n l /m i n →

S t r o k e i n % →

Time in ms →

Change of input signal [%]1

0 → 25 → 0

20 → 50 → 030 → 75 → 04

0 → 100 → 0

Measured at pilot pressure p ST = 50 bar

力士乐比例换向阀

Characteristic curves size 16

(measured with control spools E, W6-, EA, W6A as well as HLP46, ?oil = 40 °C ± 5 °C)

?p = valve pressure differential according to DIN 24311 (inlet pressure p P minus load pressure p L minus return flow pressure p T )

Transition function with stepped electric input signals

5025751001208040

1602000

12080401602000

41600408012024020032028054321

1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 100: Flow Current in mA →

F l o w i n l /m i n →

S t r o k e i n % →

Time in ms →

24008016044040032054321

1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 150: Flow Current in mA →

F l o w i n l /m i n →

Change of input signal [%]10 → 25 → 020 → 50 → 030 → 75 → 04

0 → 100 → 0

Measured at pilot pressure p ST = 50 bar

力士乐比例换向阀

Characteristic curves size 25

(measured with control spools E, W6-, EA, W6A as well as HLP46, ?oil = 40 °C ± 5 °C)

4000100200300500

54321

8000100200300400500600700

800700600

500

470

54321

50257510015010050

20025001

234150100

200

250

0?p = valve pressure differential according to DIN 24311 (inlet pressure p P minus load pressure p L minus return flow pressure p T )

Transition function with stepped electric input signals

1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 220: Flow Current in mA →

F l o w i n l /m i n →

S t r o k e i n % →

Time in ms →

Time in ms →1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 325: Flow Current in mA →

F l o w i n l /m i n →

Change of input signal [%]

10 → 25 → 020 → 50 → 030 → 75 → 04

0 → 100 → 0

Measured at pilot pressure p ST = 50 bar

力士乐比例换向阀

Characteristic curves size 32

(measured with control spools E, W6-, EA, W6A as well as HLP46, ?oil = 40 °C ± 5 °C)

80002004006001000

900800700600

500

470

432

130012001000160002004006008001000120014001000

900

800700600

500

470

18001

23410075250

500

160240320400

80160240320400?p = valve pressure differential according to DIN 24311 (inlet pressure p P minus load pressure p L minus return flow pressure p T )

Change of input signal [%]10 → 25 → 020 → 50 → 030 → 75 → 04

0 → 100 → 0

Transition function with stepped electric input signals

1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant 5?p = 100 bar constant

Ordering code 360: Flow Current in mA →

F l o w i n l /m i n →

S t r o k e i n % →

Time in ms →

1?p = 10 bar constant 2?p = 20 bar constant 3?p = 30 bar constant 4?p = 50 bar constant

5?p = 100 bar constant

Ordering code 520: Flow Current in mA →

F l o w i n l /m i n →

Measured at pilot pressure p ST = 50 bar

力士乐比例换向阀

Dimensions size 10 (dimensions in mm)

1Main valve

2Pilot control valve

3Proportional solenoid "a"

4Proportional solenoid "b"

5Terminal box

6Plug screw for valves with one solenoid

7Name plate for pilot control valve

8Name plate for main valve

9Pressure reducing valve (always available)

10Identical seal rings for ports P, A, B, T and T1

11Identical seal rings for X and Y

12Machined valve contact surface, porting pattern ac-cording to ISO 4401-05-05-0-05 (X, Y as required, T1 is available at the valve and can optionally be provided)

Deviating from the standard:

- Locating pin not available Subplates

G 534/01 FE/ZN (G3/4) without ports X and Y

G 535/01 FE/ZN (G3/4) with ports X and Y

G 536/01 FE/ZN (G1) with ports X and Y

with dimensions as in the data sheet 45054 must be or-dered separately.

Valve mounting screws

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

4 hexagon socket head cap screws

ISO 4762-M6x45-10.9-flZn-240h-L

(friction coefficient total: 0.09-0.14 according to VDA 235-101) (must be ordered separately)

Important:

Subplates are no components in the sense of directive 94/9/EC and can be used after the manufacturer of the overall system has assessed the risk of ignition.

The G...FE/ZN versions are free from aluminum and/or mag-nesium and galvanized.

力士乐比例换向阀

Dimensions size 16 (dimensions in mm)

1Main valve

2Pilot control valve

3Proportional solenoid "a"4Proportional solenoid "b"5Terminal box

6Plug screw for valves with one solenoid 7Name plate for pilot control valve 8Name plate for main valve

9Pressure reducing valve (always available)10Identical seal rings for ports P, A, B and T 11Identical seal rings for X and Y

Machined valve contact surface valve contact face, porting pattern according to ISO 4401-07-07-0-05 (X, Y as required)

Deviating from the standard:

– Ports P, A, B and T with Ø 20 mm 13Locating pin 12

Required surface quality of the

valve contact surface

Subplates

G 172/01 FE/ZN (G3/4) G 172/02 FE/ZN (M27 x 2)G 174/01 FE/ZN (G1)

G 174/02 FE/ZN (M33 x 2) G 174/08 FE/ZN (flange)with dimensions as in the data sheet 45056 must be or-dered separately.

Valve mounting screws

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

2 hexagon socket head cap screws ISO 4762-M6x60-10.9-flZn-240h-L

(friction coefficient total: 0.09-0.14 according to VDA 235-101)(must be ordered separately)

4 hexagon socket head cap screws ISO 4762-M10x60-10.9-flZn-240h-L

(total friction coefficient: 0.09-0.14 according to VDA 235-101)(must be ordered separately)Important:

Subplates are no components in the sense of directive 94/9/EC and can be used after the manufacturer of the overall system has assessed the risk of ignition.

The G...FE/ZN versions are free from aluminum and/or mag-nesium and galvanized.

力士乐比例换向阀

Dimensions size 25 (dimensions in mm)

1Main valve

2Pilot control valve

3Proportional solenoid "a"4Proportional solenoid "b"5Terminal box

6Plug screw for valves with one solenoid 7Name plate for pilot control valve 8Name plate for main valve

9Pressure reducing valve (always available)10Identical seal rings for ports P, A, B and T 11Identical seal rings for X and Y

Machined valve contact surface, porting pattern accord-ing to ISO 4401-08-08-0-05 (X, Y as required)13Locating pin

Required surface quality of the

valve contact surface

Subplates

G 151/01 FE/ZN (G1)

G 154/01 FE/ZN (G1 1/4) G 154/08 FE/ZN (flange)G 156/01 FE/ZN (G1 1/2)

with dimensions as in the data sheet 45058 must be or-dered separately.Valve mounting screws

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

6 hexagon socket head cap screws ISO 4762-M12x60-10.9-flZn-240h-L

(friction coefficient total: 0.09-0.14 according to VDA 235-101)(must be ordered separately)Important:

Subplates are no components in the sense of directive 94/9/EC and can be used after the manufacturer of the overall system has assessed the risk of ignition.

The G...FE/ZN versions are free from aluminum and/or mag-nesium and galvanized.

力士乐比例换向阀

Dimensions size 32 (dimensions in mm)

1Main valve

2Pilot control valve

3Proportional solenoid "a"4Proportional solenoid "b"5Terminal box

6Plug screw for valves with one solenoid 7Name plate for pilot control valve 8Name plate for main valve

9Pressure reducing valve (always available)10Identical seal rings for ports P, A, B and T 11Identical seal rings for X and Y

Machined valve contact surface, porting pattern accord-ing to ISO 4401-10-09-0-05 (X, Y as required)

Deviating from the standard:

– Ports P, A, B and T with Ø 38 mm 13Locating pin

12Required surface quality of the

valve contact surface

Subplates

G 157/01 FE/ZN (G1 1/2)G 157/02 FE/ZN (M48 x 2)G 158/10 FE/ZN (flange)

with dimensions as in the data sheet 45060 must be or-dered separately.Valve mounting screws

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

6 hexagon socket head cap screws ISO 4762-M20x80-10.9-flZn-240h-L

(friction coefficient total: 0.09-0.14 according to VDA 235-101)(must be ordered separately)Important:

Subplates are no components in the sense of directive 94/9/EC and can be used after the manufacturer of the overall system has assessed the risk of ignition.

The G...FE/ZN versions are free from aluminum and/or mag-nesium and galvanized.

力士乐比例换向阀

Type 4WRZ…-…/…

Pilot oil supply external

Pilot oil return external

In this version, the pilot oil is supplied from a separate pilot circuit (external).

The pilot oil return is not directed into the T channel of

the main valve, but is separately directed to the tank via

port Y (external).

Type 4WRZ…-…/…E…

Pilot oil supply internal

Pilot oil return external

In this version, the pilot oil is supplied via the P channel of the main valve (internal).

The pilot oil return is not directed into the T channel of

the main valve, but is separately directed to the tank via

port Y (external).

In the subplate, port X is to be closed.Type 4WRZ…-…/…ET…

Pilot oil supply internal

Pilot oil return internal

In this version, the pilot oil is supplied via the P channel of the main valve (internal).

The pilot oil is directly returned to channel T of the main valve (internal).

In the subplate, ports X and Y are to be closed.

Type 4WRZ…-…/…T…

Pilot oil supply external

Pilot oil return internal

In this version, the pilot oil is supplied from a separate pilot circuit (external).

The pilot oil is directly returned to channel T of the main valve (internal).

In the subplate, port Y is to be closed.

Pilot oil supply

力士乐比例换向阀

Bosch Rexroth AG Hydraulics

Zum Eisengießer 1

97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 documentation@boschrexroth.de www.boschrexroth.de © This document, as well as the data, specifications and other informa-tion set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No state-ments concerning a certain condition or suitability for a certain applica-tion can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.

Notes

力士乐比例换向阀

Bosch Rexroth AG Hydraulics

Zum Eisengießer 1

Notes

力士乐比例换向阀

Bosch Rexroth AG Hydraulics

Zum Eisengießer 1

Notes

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