Bosch | Bosch 25e | Proportional pressure reducing valve, in 3

Proportional pressure reducing valve, in 3
Proportional pressure reducing
valve, in 3-way version
RE 29184/06.11
Replaces: 12.02
1/12
Type 3DREP and 3DREPE
Size 6
Component series 2X
Maximum operating pressure
Maximum flow
100 bar
15 l/min
Table of contents
Contents
Features
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
Throttle insert
9 to 11
12
– 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
2/12
Bosch Rexroth AG Hydraulics
3DREP; 3DREPE RE 29184/06.11
Ordering code
3DREP
For external
control electronics With integrated
control electronics
6
2X
E G24
*
Further details in
the plain text
= No code
=E
Size
Size 6 =6
No code =
Symbols (simplified)
F1 =
=A
b
P T
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
B
=B
a
T P
A
b
a
For DREPE
K31 = 1)Without mating connectors,
with connector according to
DIN EN 175 301-804
Mating connectors - separate order
see page 7
=C
P T
T P
Component series 20 to 29 (20 to 29: Unchanged installation and
connection dimensions)
= 2X
No code =
Pressure rating
16 bar
25 bar
45 bar
1)With
For DREP
For DREPE
Command value/
actual value ±10 V
Command value/
actual value 4 to 20 mA
A1 =
A
B
Seal material
NBR seals
FKM seals
M =
V =
= 16
= 25
= 45
version "J" = sea water-resistant only specify "K31"
2)Only
with version 3DREP6
3)With
version "J" = "N" instead of "N9"
J = 2)
Without special type
of protection
Sea water-resistant
No code =
N9 = 3)
Without manual override
With concealed manual override
Supply voltage
+24 V direct voltage
G24 =
E =
Proportional solenoid with detachable coil
Electric special types of protection on request!
Symbols
Type 3DREP..6 A 2X/..E (detailed)
P
A
B
Type 3DREP..6 C 2X/..E (detailed)
T
a
P T
Example of valve with integrated control electronics
Type 3DREP..6 B 2X/..E (detailed)
B
T
a
T P
P T
A
B
b
b
P
A
P
Type 3DREPE..6 C 2X/..E (simplified)
T
B
A
b
a
T P
T P
P T
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
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 solenoids with central thread and detachable coil. The solenoids are optionally actuated by external control electronics (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)
– 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 current. 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.
5
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 pressure 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 connects 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 returned 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.
– Solenoids (5, 6) with central thread
Type 3DREP 6..
3
A
Note:
The unwanted activation of the hand override may lead to uncontrolled machine movements!
4 1
2
11
6
B
"a"
9
3/12
"b"
8
P
A T B
8
11
7
10
Type 3DREPE 6..
"b"
"a"
P
Valve with 2 spool positions: (type 3DREP..A.. or 3DREP..B..)
The function of this valve design corresponds basically to
A T B
the valve with 3 spool positions. The 2 spool position valves
are, however, only equipped with solenoid "a" (5) or solenoid "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 precharge 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
Weight
3DREP
3DREPE
2.0
2.2
kg
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, ϑoil = 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
mm2/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 prevents 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
HFC
NBR
ISO 12922
– Water-containing
Important information on hydraulic fluids!
– For more information and data on the use of other hydraulic fluids refer to data sheet 90220 or contact us!
– There may be limitations regarding the technical valve
data (temperature, pressure range, service life, maintenance intervals, etc.)!
– The flash point of the process and operating medium used
must be 40 K higher than the maximum solenoid surface 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 differential. The pressure peaks should not exceed the maximum 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
Voltage type
3DREPE
Direct voltage
Type of signal
Analog
Command value signal
Voltage input "A1"
Current input "F1"
V
mA
Maximum current per solenoid
Solenoid coil resistance
-
±10
4 to 20
A
1.5
2.5
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
VT11118-1X/... according to data sheet 30218
1)
For 3DREPE
Integrated in the valve, see page 8
Supply voltage
3DREPE, 3DREP
2)
Current consumption
of the amplifier
1)Separate
2) With
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
Nominal voltage
VDC 24
Lower limit value
V 19
Upper limit value
V 35
Imax
A 1.8
Maximum impulse current
order
Bosch Rexroth AG control electronics
A 3
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
Device connector allocation
Contact
Supply voltage
Signal with A1
24 VDC (u(t) = 19.4 to 35 V); Imax = 2 A
A
B
Reference (actual value)
C
Differential amplifier input
D
(command value)
E
1)Slots
Signal with F1
0 V
Cannot be used 1)
±10 V; Re > 50 kΩ
4 to 20 mA; Re > 100 Ω
Reference potential command value
F
Cannot be used 1)
PE
Connected to cooling element and valve housing
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 mm2
– Up to 50 m line length: Type LiYCY 5 x 1.0 mm2
External diameter 6.5 to 11 mm
Connect shield on PE only on the supply side.
Interface
Integrated control electronics
Command
value
D
Reference
potential
E
Output stage 1)
U
Differential amplifier
Ramp generator
U/I
•
2
Step function
generator
Lock
Supply
voltage:
A
GND
B
Protective earthing conductor
Power supply
U
PE
I
Summing device
U
Undervoltage
detection
24 V
Valve
U
Output stage 1)
U
I
+ Ui
0V
– Ui
1
1) Output stages current-controlled
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)
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
Accessories (not included in scope of delivery)
Mating connectors
Material number
Mating connector for
Solenoid a, color gray
3DREP
DIN EN 175301-803
Solenoid b, color black R900074684
Mating connector for
RD 29087_003_001
3DREPE and 3DREPE...J...
DIN EN 175201-804
R900074683
e.g. R900021267 (plastic)
e.g. R900223890 (metal)
e.g. R900217845 (plastic 90°)
Mating connector for
3DREP...J...
DIN EN 175201-804
Hexagon socket
head cap screws
R900021267 (plastic)
Material number
Size 6
4 x ISO 4762 - M5 x 50 - 10.9
Tightening torque MA = 8.9 Nm ±10 %
Subplates
Data sheet
Size 6
45052
7/12
8/12
Bosch Rexroth AG Hydraulics
3DREP; 3DREPE RE 29184/06.11
Characteristic curves (measured with HLP 46, ϑoil = 40 °C ± 5 °C and p = 100 bar)
Rated pressure in % →
Pressure rating 16, 25 and 45 bar
100
80
60
40
20
16
10 15 20
0
30
40
50
60
70
80
90 100
Command value in % →
Pressure rating 16, 25 and 45 bar
60
50
Flow in l/min →
40
30
20
10
0
P→A
or P → B
Pressure/flow dependency
10
20
30
40
Pressure differential in bar →
50
A→T
or B → T
Output pressure in % →
140
120
100
80
60
40
20
0
25
20
15
10
5
Flow
in
l/min
→
A(B) → T
0
5
10
P → A(B)
15
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
Unit dimensions: Type 3DREP (dimensions in mm)
5
9
9
1 2 7
6
10
8
4
15
3
A
94
B
"a"
8,4
23,5
42
47
"b"
Ø 45,5
79
69,2
156,5
227
11
15
A
F4
Required surface quality of the
valve mounting face
General tolerances according
to ISO 2768-mK
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
Subplates and valve mounting screws see page 7.
T
F1
47
Rmax 4
8
0,01/100mm
F2
B
G
P
72
F3
9/12
10/12
Bosch Rexroth AG Hydraulics
3DREP; 3DREPE RE 29184/06.11
Unit dimensions: Type 3DREP...J - sea water-resistant (dimensions in mm)
10
2
91,5
5
23,5
47
"b"
42
"a"
8,4
78
69,2
Ø 45,5
156
226
248 (292)
15
3
9
12 7
1
9
8
4
292
B
31
A
32,5
T
P
13,5
40,5
11
15
8
1 Valve housing
2 Name plate
4 Proportional solenoid "b"
5 Mating connector
(order separately, see page 5)
T
F1
A
47
3 Proportional solenoid "a"
F4
F2
B
G
P
72
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
0,01/100mm
Rmax 4
Required surface quality of the
valve mounting face
General tolerances according
to ISO 2768-mK
F3
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
11/12
116
Unit dimensions: Type 3DREPE and 3DREPE...J - sea water-resistant (dimensions in mm)
8.1
12
2
5
10
"a"
23,5
42
47
"b"
78
69,2
8,4
Ø 45,5
156 (188)
226 (291)
15
265 (298)
7
T
A
B
1
9
8.2
4
298
32,5
13
9
31
3
P
40,5
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
11
15
8
1
T
F1
A
47
13,5
F4
F2
B
G
P
F3
72
0,01/100mm
Rmax 4
Required surface quality of the
valve mounting face
General tolerances according
to ISO 2768-mK
Hydraulics Bosch Rexroth AG
RE 29184/06.11 3DREP; 3DREPE
12/12
Throttle insert
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 information 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 statements concerning a certain condition or suitability for a certain application 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.
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