1/12
Proportional pressure reducing
valve, in 3-way version
Type 3DREP and 3DREPE
Size 6
Component series 2X
Maximum operating pressure 100 bar
Maximum flow 15 l/min
RE 29184/06.11
Replaces: 12.02
Table of contents
Contents Page
Features 1
Ordering code 2
Symbols 2
Function, section 3
Technical data 4, 5
Block diagram of the integrated electronics (OBE) for
type 3DREPE 6
Accessories 7
Characteristic curves 8
Unit dimensions 9 to 11
Throttle insert 12
Features
– Direct operated proportional valves for controlling a pressure
and the direction of a flow
– Operation by means of proportional solenoids with central
thread and detachable coil
– Subplate mounting:
Porting pattern according to ISO 4401
– Manual override, optional
– Spring-centered control spool
– Type 3DREPE with integrated control electronics
– External control electronics for type 3DREP:
• AnalogamplifierstypeVT-VSPA2-1-2X/…inEurocard
format (separate order), see page 5
• DigitalamplifiertypeVT-VSPD-1-1X/…inEurocard
format (separate order), see page 5
• ElectricamplifiertypeVT11118inmodulardesign
(separate order), see page 5
Inhalt
Table of contents 1
Features 1
Ordering code 2
Symbols 2
Function, section 3
Technical data (For applications outside these parameters,
please consult us!) 4
Technical data (For applications outside these parameters,
please consult us!) 5
Block diagram of the integrated electronics (OBE) for type
3DREPE 6
Accessories (not included in scope of delivery) 7
Characteristic curves (measured with HLP 46, ϑ
oil
= 40 °C ± 5
°C and p = 100 bar) 8
Unit dimensions: Type 3DREP (dimensions in mm) 9
Unit dimensions: Type 3DREP...J - sea water-resistant (dimen-
sions in mm) 10
Unit dimensions: Type 3DREPE and 3DREPE...J - sea water-
resistant (dimensions in mm) 11
Throttle insert 12
2/12 Bosch Rexroth AG Hydraulics 3DREP; 3DREPE RE 29184/06.11
Ordering code
For external
control electronics = No code
With integrated
control electronics = E
Size
Size 6 = 6
Symbols (simplified)
= A
= B
= C
Component series 20 to 29 = 2X
(20 to 29: Unchanged installation and
connection dimensions)
Pressure rating
16 bar = 16
25 bar = 25
45 bar = 45
Further details in
the plain text
Seal material
M = NBR seals
V = FKM seals
No code = For DREP
For DREPE
A1 =
Command value/
actualvalue±10V
F1 =
Command value/
actual value 4 to 20 mA
Electrical connection for DREP
K4 =
1)
Without mating connectors,
with connector according to
DIN EN 175 301-803
Mating connectors - separate order
see page 7
For DREPE
K31 =
1)
Without mating connectors,
with connector according to
DIN EN 175 301-804
Mating connectors - separate order
see page 7
No code = Without special type
of protection
J =
2)
Sea water-resistant
No code = Without manual override
N9 =
3)
With concealed manual override
Supply voltage
G24 = +24Vdirectvoltage
E = Proportional solenoid with detachable coil
3DREP 6 2X E G24
*
P
T
A
b
P
T
B
a
P
T
A
b
P
T
B
a
1)
With version "J" = sea water-resistant only specify "K31"
2)
Only with version 3DREP6
3)
With version "J" = "N" instead of "N9"
Electric special types of protection on request!
Symbols
Type 3DREP..6 A 2X/..E (detailed)
T
P
A
P
T
a
B
Type 3DREP..6 C 2X/..E (detailed)
Type 3DREP..6 B 2X/..E (detailed)
Example of valve with integrated control electronics
Type 3DREPE..6 C 2X/..E (simplified)
T
P
A
P
T
b
B
T
P
P
T
A
a
P
T
B
b
P
T
A
b
P
T
B
a
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
3/12
Function, section
The 3-way pressure reducing valve type 3 DREP 6.. is direct
operated by proportional solenoids. It is used to convert an
electric input signal into a proportional pressure output signal.
The proportional solenoids are controllable wet-pin DC so-
lenoids with central thread and detachable coil. The so-
lenoids are optionally actuated by external control elec-
tronics (type 3DREP) or by the internal 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
– Optionally 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 cur-
rent. With de-energized solenoids (5, 6), the control spool (2)
is held in the central position by means of the pressure
springs (8). Ports A and B are connected with T so that the
hydraulic fluid can flow off 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 characteristic. The pressure that builds up in channel B
acts with the surface of the pressure measuring spool (4) on
the control spool and against the solenoid force. The pres-
sure measuring spool (4) is supported by the solenoid "b". If
the pressure exceeds the value set at solenoid "a", the control
spool (2) is pushed back against the solenoid force and con-
nects B with T until the set pressure is achieved again. The
pressure is proportional to the solenoid current.
After shut-down of the solenoid, the control spool (2) is re-
turned into the central position by the compression springs (8).
An optional hand override (9, 10) allows for the displacement
of the control spool (2) without solenoid energization.
Note:
The unwanted activation of the hand override may lead to un-
controlled machine movements!
5
2
4
6
1
"a"
"b"
8
8
3
10
9
P
B
T
A
B
A
11
11
Type 3DREP 6..
Type 3DREPE 6..
Valve with 2 spool positions: (type 3DREP..A.. or 3DREP..B..)
The function of this valve design corresponds basically to
the valve with 3 spool positions. The 2 spool position valves
are, however, only equipped with solenoid "a" (5) or sole-
noid "b" (6). Instead of the 2nd proportional solenoid, there is
a plug screw (11).
Note:
The tank line must not be allowed to run empty.
With corresponding installation conditions, a pre-
charge valve (pre-charging pressure approx. 2 bar)
must be installed.
4/12 Bosch Rexroth AG Hydraulics 3DREP; 3DREPE RE 29184/06.11
Technical data (For applications outside these parameters, please consult us!)
general
Valvetype 3DREP 3DREPE
Weight kg 2.0 2.2
Installation position Any, preferably horizontal
Storage temperature range °C –20 to +80
Ambient temperature range °C –20 to +70 –20 to +50
hydraulic (measured with HLP 32, ϑ
oil
= 40 °C ± 5 °C)
Operating pressure range Port P bar 20 to 100 for pressure rating 16
bar 30 to 100 for pressure rating 25
bar 50 to 100 for pressure rating 45
Port T bar 0 to 30
Maximum flow l/min 15 (∆p = 50 bar)
Hydraulic fluid See table below
Hydraulic fluid temperature range
(at the valve working ports)
°C –20 to +80, preferably +40 to +50
Viscosityrange mm
2
/s 20 to 380, preferably 30 to 46
Maximum admissible degree of contamination of the hydraulic fluid
cleanliness class according to ISO 4406 (c)
Class 17/15/12
1)
Hysteresis
% ≤5
Repeatability
% ≤1
Response sensitivity
% ≤0.5
Range of inversion
% ≤1
1)
The cleanliness classes specified for the components must
be adhered to in hydraulic systems. Effective filtration pre-
vents faults and at the same time increases the service life
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 – Water-containing HFC NBR ISO 12922
Important information on hydraulic fluids!
– For more information and data on the use of other hydrau-
lic fluids refer to data sheet 90220 or contact us!
– There may be limitations regarding the technical valve
data (temperature, pressure range, service life, mainte-
nance intervals, etc.)!
– The flash point of the process and operating medium used
must be 40 K higher than the maximum solenoid sur-
face temperature.
– Flame-resistant – water-containing: Maximum pressure
differential per control edge 175 bar, otherwise, increased
cavitation erosion!
Tank pre-loading < 1 bar or > 20 % of the pressure differ-
ential. The pressure peaks should not exceed the maxi-
mum operating pressures!
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
5/12
Technical data (For applications outside these parameters, please consult us!)
electric
Valvetype 3DREP 3DREPE
Voltagetype Direct voltage
Type of signal Analog
Command value signal Voltageinput"A1"
Current input "F1"
V
mA
- ±10
4 to 20
Maximum current per solenoid 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
Maximum coil temperature
1)
°C up to 150
ProtectionclassaccordingDINEN60529/VDE0470part1 IP 65 with mating connector mounted and locked
1)
Due to the temperatures occurring at the surfaces of the solenoid coils, the European standards ISO 13732-1 and EN 982
need to be adhered to!
Control electronics
For 3DREP Digital amplifier in Eurocard format
1)
VT-VSPD-1-2X/...accordingtodatasheet30523
Analog amplifier in Eurocard format
1)
VT-VSPA2-1-2X/…accordingtodatasheet30110
Analog module amplifier
1)
VT11118-1X/...accordingtodatasheet30218
For 3DREPE Integrated in the valve, see page 8
Analog command value module VT-SWMA-1-1X/...accordingtodatasheet29902
Analog command value module VT-SWMKA-1-1X/...accordingtodatasheet29903
Digital command value card VT-HACD-1-1X/…accordingtodatasheet30143
Analog command value card VT-SWKA-1-1X/...accordingtodatasheet30255
Supply voltage Nominal voltage VDC 24
3DREPE, 3DREP
2)
Lower limit value V 19
Upper limit value V 35
Current consumption I
max
A 1.8
of the amplifier Maximum impulse current A 3
1)
Separate order
2)
With Bosch Rexroth AG control electronics
Note: Information on the environment simulation
testing for the areas EMC (electromagnetic
compatibility), climate and mechanical load
see RE 29055-U
(declaration on environmental compatibility).
6/12 Bosch Rexroth AG Hydraulics 3DREP; 3DREPE RE 29184/06.11
Block diagram of the integrated electronics (OBE) for type 3DREPE
PE
B
A
E
D
U
U
I
U
I
2
1
+ U
i
0 V
– U
i
U
U
•
U/I
Interface Integrated control electronics Valve
Command
value
Reference
potential
GND
Protective earth-
ing conductor
Supply
voltage:
24 V
Summing device
Ramp generator
Differential amplifier
Output stage
1)
Lock
Undervoltage
detection
Power supply
Step function
generator
Output stage
1)
1 Protective earthing conductor screwed to valve housing and cover
2 Ramp can be set from 0 to 5 s from the outside (T
up
≙
T
down
)
1)
Output stages current-controlled
Device connector allocation Contact Signal with A1 Signal with F1
Supply voltage A 24VDC(u(t)=19.4to35V);I
max
= 2 A
B 0V
Reference (actual value) C Cannot be used
1)
Differential amplifier input D ±10V;R
e
>50kΩ 4to20mA;R
e
>100Ω
(command value) E Reference potential command value
F
Cannot be used
1)
PE Connected to cooling element and valve housing
1)
Slots C and F must not be connected!
Command value: Reference potential at E and positive command value (or 12 to 20 mA) at D result in pressure in A.
Reference potential at E and negative command value (or 12 to 4 mA) at D result in pressure in B.
With valves with 1 solenoid on side b (design A):
Reference potential at E and positive command value at D (4 to 20 mA) result in pressure in A.
With valves with 1 solenoid on side a (design B):
Reference potential at E and positive command value at D (4 to 20 mA) result in pressure in B.
Connection cable: Recommendation: – Up to 25 m line length: Type LiYCY 5 x 0.75 mm
2
– Up to 50 m line length: Type LiYCY 5 x 1.0 mm
2
External diameter 6.5 to 11 mm
Connect shield on PE only on the supply side.
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
7/12
Accessories (not included in scope of delivery)
Subplates Data sheet
Size 6 45052
Mating connectors Material number
Mating connector for Solenoid a, color gray R900074683
3DREP DIN EN 175301-803 Solenoid b, color black R900074684
Mating connector for e.g. R900021267 (plastic)
3DREPE and 3DREPE...J... DIN EN 175201-804 e.g. R900223890 (metal)
e.g. R900217845 (plastic 90°)
Mating connector for
3DREP...J... DIN EN 175201-804 R900021267 (plastic)
RD 29087_003_004
Hexagon socket
head cap screws
RD 29087_003_001
Material number
Size 6 4 x ISO 4762 - M5 x 50 - 10.9
Tightening torque M
A
= 8.9 Nm ±10 %
8/12 Bosch Rexroth AG Hydraulics 3DREP; 3DREPE RE 29184/06.11
Characteristic curves (measured with HLP 46, ϑ
oil
= 40 °C ± 5 °C and p = 100 bar)
0 10
20
20 30 40 50 60 70 80 90 100
40
60
80
100
16
15
0
20 15 10 5 0 5 10 1525
20
40
60
80
100
120
140
0 10 20 30 40 50
10
20
30
40
50
60
Pressure rating 16, 25 and 45 bar
Pressure rating 16, 25 and 45 bar
Pressure/flow dependency
Command value in % →
Pressure differential in bar →
Flow in l/min →
A(B) →T
Rated pressure in % →
Flow in l/min →
Output pressure in % →
P →A(B)
P →A
or P →B
A →T
or B →T
0,01/100mm
R
max
4
47
72
8
15
T
P
A
F4
F3
B
F1
F2
G
11
8,4
79
94
156,5
227
47
"a"
3
4
2
5
6
1
7
9
8
15
10
42
9
"b"
B
23,5
A
Ø 45,5
69,2
Subplates and valve mounting screws see page 7.
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
9/12
Unit dimensions: Type 3DREP (dimensions in mm)
1 Valvehousing
2 Name plate
3 Proportional solenoid "a"
4 Proportional solenoid "b"
5 Mating connector "A", color gray
(order separately, see page 5)
6 Mating connector "B", color black
(order separately, see page 5)
7 Identical seal rings for ports A, B, P, and T
8 Concealed manual override "N9"
9 Plug screw for valves with 1 solenoid (version "A" or "B")
10 Space required for removing the mating connector
11 Machined valve mounting face, porting pattern according
to ISO 4401-03-02-0-05
General tolerances according
to ISO 2768-mK
Required surface quality of the
valve mounting face
0,01/100mm
R
max
4
47
72
8
15
T
P
A
F4
F3
B
F1
F2
G
11
1 Valvehousing
2 Name plate
3 Proportional solenoid "a"
4 Proportional solenoid "b"
5 Mating connector
(order separately, see page 5)
7 Identical seal rings for ports A, B, P, and T
8 Concealed manual override "N"
9 Plug screw for valves with 1 solenoid (version "A" or "B")
10 Space required for removing the mating connector
11 Machined valve mounting face, porting pattern according
to ISO 4401-03-02-0-05
12 Dimension for version "N"
Subplates and valve mounting screws see page 7
General tolerances according
to ISO 2768-mK
Required surface quality of the
valve mounting face
10/12 Bosch Rexroth AG Hydraulics 3DREP; 3DREPE RE 29184/06.11
Unit dimensions: Type 3DREP...J - sea water-resistant (dimensions in mm)
31
8,4
69,2
226
156
78
23,5
47
91,5
15
42
3
9
7
9
4
1
10
"a"
"b"
5
40,5
13,5
A
T
P
B
248
32,5
2
292
8
Ø 45,5
(292)
12
0,01/100mm
R
max
4
47
72
8
15
T
P
A
F4
F3
B
F1
F2
G
11
1 Valvehousing
2 Name plate
3 Proportional solenoid "a"
4 Proportional solenoid "b"
5 Mating connector
(order separately, see page 5)
7 Identical seal rings for ports A, B, P, and T
8.1 Concealed manual override "N9"
8.2 Manual override "N" for sea water-resistant version "J"
9 Plug screw for valves with 1 solenoid (version "A" or "B")
10 Space required for removing the mating connector
11 Machined valve mounting face, porting pattern according
to ISO 4401-03-02-0-05
12 Integrated control electronics
13 Dimension ( ) for sea water-resistant version "J"
Subplates and valve mounting screws see page 7
General tolerances according
to ISO 2768-mK
Required surface quality of the
valve mounting face
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
11/12
Unit dimensions: Type 3DREPE and 3DREPE...J - sea water-resistant (dimensions in mm)
12
8.1
39
79
4
1
10
"a"
"b"
8,4
156 (188)
226 (291)
78
116
15
42
23,5
5
31
32,5
40,5
13,5
A
B
T
P
265 (298)
47
2
298
13
8.2
69,2
Ø 45,5
When using a proportional directional valve type
4WRZ..., the following throttle inserts are to be used
in channel A and B:
Size 10 16 25 32 52
Ø in mm 1.8 2.0 2.8 ̶ ̶
Material no. R900158510 R900158547 R900158548 ̶ ̶
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 18-0
Fax +49 (0) 93 52 / 18-23 58
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.
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
12/12
Throttle insert