BOSCH REXROTH
3DREPE6C-2X/25EG24N9K31/A1V
R900925484
Proportional Pressure Reducing Control Valves

Prop.press.valves: 3DREP* 6.-2x/

$3,048.00

BOSCH REXROTH

MATERIAL:  R900925484

SUMMARY:  Prop.press.valves: 3DREP* 6.-2x/

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The 3-way pressure reducing valve type 3 DREP 6.. is direct operated by proportional solenoids. It is intended for the conversion of an electric input signal into a proportional pressure output signal. The proportional solenoids are controllable, wet-pin DC solenoids with a central thread and a detachable coil. The solenoids are controlled optionally either by external control electronics (type 3DREP) or by the integrated control electronics (type 3DREPE).

Set-up:

The valve basically consists of:

Housing (1) with connection surface Control spool (2) with pressure measuring spool (3, 4) Solenoids (5, 6) with central thread optional integrated control electronics (7)

Function:

The pressure in A or B is set by means of the proportional solenoids. 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 to the tank without obstructions. By energizing a proportional solenoid, e.g. solenoid "a" (5), the pressure measuring spool (3) and with it the control spool (2) are moved to the right. This opens the connection from P to B and A to T via orifice-type cross-sections with progressive flow characteristics. With the surface of the pressure measuring spool (4) the pressure that builds up in channel B acts on the control spool and against the solenoid force. The pressure measuring spool (4) is supported by solenoid "b". If the pressure exceeds the value set at solenoid "a", the control spool (2) is pushed back against the solenoid force and connects B with T until the set pressure is reached again. The

pressure is proportional to the solenoid current. When the solenoid is switched off, the control spool (2) is returned into the central position by the compression springs (8). An optional hand override (9, 10) allows control spool (2) to be moved without solenoid energization.

Notice:

Accidental activation of the hand override may lead to uncontrolled machine movements!

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Valve with two spool positions (type 3DREP..A.. or 3DREP..B..):

The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid “a” (5) or solenoid “b” (6). Instead of the 2nd proportional solenoid, a plug screw (11) is installed.

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

13

14

3DREP

6

2X

/

E

G24

/

*

01

Proportional pressure relief valve in 3-way version

 

3DREP

02

For external analog electronics

no code

With integrated control electronics

E

03

Size 6

6

Version

04

Type 3DREP6 A 2X/..

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

A

Type 3DREP6 B 2X/..

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

B

Type 3DREP6 C 2X/..

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

C

05

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

2X

Pressure rating

06

16 bar

16

25 bar

25

45 bar

45

07

Proportional solenoid with detachable coil

E

Power supply

08

Direct voltage 24 V

G24

09

Without manual override

no code

With concealed manual override

N9 3)

10

Without special type of protection

no code

Sea water-resistant

J 2)

Electrical connection

11

For type DREP:

Without mating connector; connector DIN EN 175301-803

K4 1)

For type DREPE:

Without mating connector; connector DIN EN 175201-804

K311)

Electrical interface

12

For type DREP:

no code

For type DREPE:

Command value/actual value ±10 V

A1

Command value/actual value 4 … 20 mA

F1

Seal material

13

NBR seals

M

FKM seals

V

14

Further details in the plain text

*

1)

For version "J" = seawater-resistant only indicate "K31"

2)

Only for version 3DREP6

3)

With version “J”, indicate “N” only instead of “N9”

Special electrical types of protection upon request

For applications outside these parameters, please consult us!

general

Type

3DREP 3DREPE

Size

6

Component series

2X

Installation position

any, preferably horizontal

Earth

kg

2 2.2

Storage temperature range

°C

-20 … +80

Ambient temperature range

°C

-20 … +70 -20 … +50

hydraulic

Type

3DREP 3DREPE

Maximum operating pressure

bar

100

Operating pressure range

Port P

Pressure rating 16 bar

bar

20 … 100

Pressure rating 25 bar

bar

30 … 100

Pressure rating 45 bar

bar

50 … 100

Port T

bar

0 ... 30

Maximum flow 1)

l/min

15 15

Hydraulic fluid

see table see table

Hydraulic fluid temperature range

°C

-20 … +80 -20 … +80

Viscosity range

mm²/s

20 … 380 20 … 380

preferably

mm²/s

30 … 46 30 … 46

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

Class 17/15/12 according to ISO 4406 (c) Class 17/15/12 according to ISO 4406 (c)

Hysteresis

%

≤ 5 ≤ 5

Repetition accuracy

%

≤ 1 ≤ 1

Response sensitivity

%

≤ 0.5 ≤ 0.5

Range of inversion

%

≤ 1 ≤ 1
1) Δp = 50 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.

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP

NBR / FKM

DIN 51524

Flame-resistant   - containing water

HFC

 

NBR

ISO 12922

Important information on hydraulic fluids:

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

There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.).

The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature.

Flame-resistant - containing water:
Maximum pressure differential per control edge 175 bar, otherwise, increased cavitation erosion!
Tank pre-loading < 1 bar or > 20% of the pressure differential
Pressure peaks must not exceed the maximum operating pressures!

electrical

Type

3DREP 3DREPE

Voltage type

Direct voltage

Type of signal

analog

Maximum solenoid current

A

1.5 2.5

Solenoid coil resistance

Cold value at 20 °C

Ω

5.2 2.15

Maximum hot value

Ω

7.6 3.3

Duty cycle

%

100

Coil temperature 1)

°C

150

Protection class according to DIN EN 60529

IP65 (with mating connector mounted and locked)
1) Due to the surface temperatures of the solenoid coils, the standards ISO 13732-1 and EN 982 need to be adhered to!

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

Pressure rating 16, 25, and 45 bar

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Pressure rating 16, 25, and 45 bar

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Flow-dependent pressure

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Type 3DREP..6 A 2X/..E (detailed)

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Type 3DREP..6 B 2X/..E (detailed)

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Type 3DREP..6 C 2X/..E (detailed)

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Example of valve with integrated control electronics; type 3DREPE..6 C 2X/..E (simplified)

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

Pin assignment

Contact

Assignment interface "A1"

Assignment interface "F1"

Power supply

A

24 VDC (u(t) = 19,4 ... 35 V); Imax = 2 A

B

0 V

Reference potential actual value

C

cannot be used 1)

Differential amplifier input (command value)

D

±10 V command value; Re > 50 kΩ

4 ...20 mA command value; Re > 100 Ω

E

Reference potential command value

Measuring output (actual value)

F

cannot be used 1)

PE

connected to cooling element and valve housing

1)

Contacts C and F must not be connected!

Command value:

Reference potential at E and positive command value (or 12...20 mA) at D result in pressure in A.

Reference potential at E and negative command value (or 12...4 mA) at D result in pressure in B.

With valves with solenoid on side “b” (version A), reference potential at E and a positive command value at D (4...20 mA) result in pressure in A.

With valves with solenoid on side “a” (version B), reference potential at E and a positive command value at D (4...20 mA) result in pressure in B.

Connection cable:

Recommendation:

up to 25 m line length: Type LiYCY 5 x 0.75 mm2 up to 50 m line length: Type LiYCY 5 x 1.0 mm2 External diameter 6.5 to 11 mm Connect shield to PE on the supply side.

Block diagram / pin assignment

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/
technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

1

Valve housing

2

Name plate

3

Proportional solenoid "a"

4

Proportional solenoid "b"

5

Mating connector "A", color gray, separate order

6

Mating connector "B", color black, separate order

7

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

8

Concealed manual override “N9”

9

Plug screw for valve with one solenoid

10

Space required to remove the mating connector

11

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

1

Valve housing

2

Name plate

3

Proportional solenoid "a"

4

Proportional solenoid "b"

5

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

7

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

8

Concealed manual override “N”

9

Plug screw for valve with one solenoid

10

Space required to remove the mating connector

11

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

12

Dimension for version "N"

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

1

Valve housing

2

Name plate

3

Proportional solenoid "a"

4

Proportional solenoid "b"

5

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

7

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

8.1

Concealed manual override “N9”

8.2

Manual override “N“ for seawater-resistant version "J"

9

Plug screw for valve with one solenoid

10

Space required to remove the mating connector

11

Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05

12

Integrated electronics (OBE)

13

Dimension for seawater-resistant version "J"

Recommended valve mounting screws (separate order):

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9

Tightening torque MA = 8.9 Nm ± 10%

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

3P Z4

technical illustration-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

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-3DREPE6C-2X/25EG24N9K31/A1V-Prop.press.valves: 3DREP* 6.-2x/

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