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BOSCH REXROTH
3WRCE50V000X-2X/SG24K31/C5M-140
R901212336
High-Response Directonal Valves

Throttle control valves: 3WRC* 50.-2x/S

$31,940.00

BOSCH REXROTH

MATERIAL:  R901212336

SUMMARY:  Throttle control valves: 3WRC* 50.-2x/S

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Valves of type 3WRCE are 3-stage high-response valves. They control the quantity and direction of a flow and are mainly used in control loops.

 

Set-up

They consist of the following assemblies:

2-stage pilot control valve (1) with dry torque motor low-friction nozzle flapper plate amplifier and mechanical feedback of the spool position a main stage (2) for flow control an inductive position transducer (3) the core (4) of which is attached to the spool (5) of the third stage and integrated control electronics (6).

 

Function

The integrated or external electronics compares command and actual values and the torque motor of the pilot control valve is actuated with a proportional current according to the control deviation.

The pilot control valve takes a proportionally controlled position and controls the flow in and out of the control chambers A (7) and B (8) that actuate the main spool (5) through the closed valve control loop up to 0 control deviation.

This means that the stroke of the main spool is regulated proportionally to the command value. It must be noted that the flow also depends on the valve pressure drop.

 

Valve particularities

The opening point of 0 % (V spool) is set at the factory. Upon replacement of the pilot control valve or the control electronics, the opening point can be readjusted using the zero adjustment potentiometer R316, accessible via a plug screw.

During the exchange, no settings must be made at the control electronics (= controller or control electronics) and the pilot control valve, except for the zero adjustment at the position transducer.

At the pilot control valve, only the filter element may be exchanged (see “directional servo valves”)

The pilot control valve is trimmed so that the pilot pressure is connected to control chamber B (8) in case of a power failure, i.e. the main stage is opened from A to T or the connection P to A is closed.

The spring behind the main spool moves it into position so that P to A is closed if no pressure is applied (e.g. prior to installation, before the pressures are reapplied after tool change).

The control electronics feature an offset to compensate the trimming of the pilot control valve (pilot trimming).

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

01

02

03

04

05

06

07

08

09

10

11

12

13

14

3

WRCE

2X

/

S

K31

/

*

01

3/2 directional valve

3

02

Electrically operated 2-way proportional throttle valve for block installation

WRCE

03

Size 32

32

Size 40

40

Size 50

50

04

Sliding spool, zero overlap (+0.5...+1.5%)

V

Sliding spool, with 10…13 % pos. overlap

E

Rated flow at 5 bar valve pressure drop

05

NG32:

290 l/min linear only ...S290L...

290

250 l/min with fine control range only ...S250P...

250

NG40:

460 l/min linear only ...S460L...

460

410 l/min with fine control range only ...S410P...

410

NG50:

720 l/min linear only ...S720L...

720

620 l/min with fine control range only ...S620P...

620

Characteristic curve form

06

Linear

L

Linear with linear fine control range

P

07

Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6

2X

Pilot control valve

08

Servo valve

S

09

Supply voltage 24 VDC

G24

Supply voltage ± 15 VDC

G15

Electrical connection

10

Without mating connector, with connector according to E DIN 43 563-MA6, separate order

K31

Electrical interface

11

Command value 0 ...+10 V, actual value 0.5 ...+10 V

A1

Command value 0 ...+10 mA, actual value 0.5 ...+10 mA

C1

Sandwich plate shut-off valve

12

Without shut-off valve

no code

With shut-off valve

shut-off valve switched to de-energized actively closes 3WRCE with applied pilot pressure from P to A

WK15

shut-off valve switched to de-energized actively opens 3WRCE with applied pilot pressure from A to T

Voltage supply 24 VDC

WL15

Seal material

13

NBR seals, suitable for mineral oil HL and HLP according to DIN 51524

M

FKM seals

V

14

Further details in the plain text

*

For applications outside these parameters, please consult us!

general

Type

3WRCE.../S

Size

32 40 50

Component series

2X

Installation position

any, preferably horizontal

Earth

kg

11.5 18.9 29.2

Earth

With shut-off valve

kg

12.7 20.1 32.9

Storage temperature range

°C

-20 … +80

Ambient temperature range

°C

-20 … +60

hydraulic

Type

3WRCE.../S

Size

32 40 50

Maximum operating pressure

bar

420

Maximum operating pressure

Port P

bar

315

Port A

bar

315

Port T

bar

315

Maximum operating pressure

Pilot control valve

Port X

bar

315

Port Y

Pressure peaks < 100, static < 10

Nominal flow 1)

Version ...V...L (linear)

l/min

290 460 720

Zero flow

Servo pre-stage

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Maximum flow

l/min

900 1400 2200

Pilot flow

l/min

27 42 65

Hydraulic fluid temperature range

°C

-20 … +80

preferably

°C

+40 … +50

Viscosity range

mm²/s

20 … 380

preferably

mm²/s

30 … 45

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 2)

Pilot control valve

Class 18/16/13 according to ISO 4406 (c)

Main valve

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

Nominal stroke

mm

5 6 7.5

Hysteresis

%

≤ 0.2

Response sensitivity

%

≤ 0.1

Range of inversion

%

≤ 0.1

Closing time 3)

Pilot control valve

ms

≤ 500

Sandwich plate shut-off valve

ms

≤ 200
1) +10 % with Δp = 5 bar
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.
3) With pilot pressures from 40 to 315 bar

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP, HLPD, HVLP, HVLPD

NBR / FKM

DIN 51524

Flame-resistant   - containing water

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

NBR

ISO 12922

Important information on hydraulic fluids:

For more information and data on the use of other hydraulic fluids please 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:
Maximum pressure differential per control edge 175 bar
Pressure pre-loading at the tank port > 20 % of the pressure differential, otherwise increased cavitation
Life cycle as compared to operation with mineral oil HL, HLP 50 % to 100 %

electrical

Type

3WRCE.../S

Voltage type

Direct voltage

Type of signal

analog

Protection class according to DIN EN 60529

IP65 (with mating connector mounted and locked)

Zero point calibration

%

≤ 0.1

Zero shift upon change of

Hydraulic fluid temperature

%/10 K

≤ 0.3

Return flow pressure

%/bar

≤ 0.3

Pilot pressure

%/100 bar

≤ 0.7

Nominal command value range for 3WRCE:
0 ... ±10 V (mA) ≙ 0 ... ±100 %
With a slow command value change from 0 V to ±10 V, the actual value follows the command value within ±0.1 V.
With command value greater than ±10 V, then the actual value can briefly reach values of approx. ±10.5 V.

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

measured with HLP32, ϑOil = 40±5 °C

Rated flow at 5 bar valve pressure differential

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Rated flow at 5 bar valve pressure differential with 10 % overlap

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Pressure/signal function with 3WRCE...V... limiting and average characteristic curves

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Transition function

Size 32

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Frequency response

Size 32

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Dependency of the frequency f at -90° of the operating pressure and the inlet amplitude

Size 32

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Transition function

NG40

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Frequency response

NG40

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Dependency of the frequency f at -90° of the operating pressure and the inlet amplitude

NG40

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Transition function

NG50

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Frequency response

NG50

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Dependency of the frequency f at -90° of the operating pressure and the inlet amplitude

NG50

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Detailed

simplified

Type 3WRCE..V...-2X/S...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..V...-2X/S...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..V...-2X/S...WK...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..V...-2X/S...WK...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..V...-2X/S...WL...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..V...-2X/S...WL...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..E...-2X/S...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Type 3WRCE..E...-2X/S...

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Block diagram / pin assignment

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

Pin assignment

Contact

Interface A1

Interface C1

(Voltage supply “G15” in brackets)

Power supply

A

+24 VDC (+15 VDC)

+24 VDC (+15 VDC)

B

0 VDC (-15 VDC)

0 VDC (-15 VDC)

M0 with ± 15 V "G15"

C

n.c. (Reference to contacts A, B)

n.c. (Reference to contacts A, B)

Differential command value input

D

E

0 ... ±10 V

0 ... ±10 mA

Actual value

Reference with "G24" is pin B

Reference with "G15" is pin C

F

0 ... ±10 V

0 ... ±10 mA

PE

connected to valve housing

Supply voltage:

+24 VDC ±6 V; full bridge rectification with smoothing capacitor 2200 μF; Imax = 230 mA ±15 VDC ±0.45 V; stabilized and smoothened; Imax= 180 mA

Command value current:

0 ... +10 mA and/or ±10 mA → input resistance 100 Ω

Actual value current:

0.5 mA ... +10 mA and/or ±10 mA → maximum load resistance 1 kΩ Command value and actual value have the same polarity

 

Notice:

Electrical signals provided via control electronics (e.g. actual value) must not be used to switch off safety-relevant machine functions!

(See also the European standard "Safety requirements for fluid-powered systems and their components - Hydraulics", EN 982.)

Size 32

Dimensions in mm

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

1

Pilot control valve (directional servo valve NG6)

2

Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)

3

Socket

4

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

5

Mating connector according to DIN EN 175301-803, separate order

6

Space required to remove the mating connector

7

Cabling

8

Valve mounting screws (included in the scope of delivery):
4 hexagon socket head cap screws ISO 4762 - M16 x 100- 10.9
Tightening torque for tightening factor 1.6: 280 Nm

9

Locking pin for locating hole

10

Identical seal rings for ports X and Y

11

Name plate

NG40

Dimensions in mm

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

1.1

Pilot control valve (directional servo valve NG10)

1.2

Pilot control valve (directional servo valve NG6)

2

Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)

3

Socket

4

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

5

Mating connector according to DIN EN 175301-803, separate order

6

Space required to remove the mating connector

7

Cabling

8

Valve mounting screws (included in the scope of delivery):
4 hexagon socket head cap screws ISO 4762 - M20 x 180- 10.9
Tightening torque for tightening factor 1.6: 560 Nm

9

Locking pin for locating hole

10

Identical seal rings for ports X and Y

11

Name plate

NG50

Dimensions in mm

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

1.1

Pilot control valve (directional servo valve NG10)

2

Sandwich plate shut-off valve (only with versions “WK15” and “WL15”)

3

Socket

4

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

5

Mating connector according to DIN EN 175301-803, separate order

6

Space required to remove the mating connector

7

Cabling

8

Valve mounting screws (included in the scope of delivery):
4 hexagon socket head cap screws ISO 4762 - M20 x 190- 10.9
Tightening torque for tightening factor 1.6: 560 Nm

9

Locking pin for locating hole

10

Identical seal rings for ports X and Y

11

Name plate

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/Stechnical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

1

Depth of fit, minimum dimension

2

The ports P, T and B can be positioned around the central axis of port A. Sufficient distance from the mounting and control bores is to be observed

3

Bore for locating pin

Tolerances according to ISO 2768-mK

NG

ØD1H7

ØD2H7

ØD3H7

ØD4

ØD5

ØD6H7

ØD7

D8

max. ØD9

ØD10

H1

H2

H3

H4

H5

H7

H8

H9

H10

H11

H12

H13

H16

H17

H18

L1

L2

L3

L4

L5

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

mm

32 60 58 55 32 24 45 32 M16 8 6 70 85 52 30 13 43.5 85 100 30 70.5 18 15 2.5 2.5 35 105 70 35 41 17
40 75 73 55 40 30 55 40 M20 10 6 87 105 64 30 15 54 105 125 36 87 21 18 3 3 45 125 85 42.5 50 23
50 90 87 68 50 35 68 50 M20 10 8 100 122 72 35 17 87 143 165 66 122 48 18 4 3 45 140 100 50 58 30

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

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 round connector, 6-pole + PE

7P Z31

technical illustration-3WRCE50V000X-2X/SG24K31/C5M-140-Throttle control valves: 3WRC* 50.-2x/S

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