1/10
Proportional pressure reducing valve,
pilot operated, with on-board elec-
tronics (OBE) and position feedback
Type DREBE6X
Nominal size (NG) 6
Unit series 1X
Maximum working pressure P 315 bar, T 250 bar
Maximum flow rate 40 l/min
RE 29195/05.06
Replaces: 07.05
List of Contents
Contents Page
Features 1
Ordering data 2
Preferred types, symbol 2
Function, sectional diagram 3
Technical data 4 to 6
On-board trigger electronics 7 and 8
Characteristic curves 9
Unit dimensions 10
Features
– Pilot operated valves with position feedback and on-board
electronics for reducing system pressure in the consumer
(pilot oil internal only)
– 3-way version (P–A/A–T), p
min
= p
T
– Adjustable through the position of the armature against the
compression spring
– Position-controlled, minimal hysteresis < 1 %, rapid response
times, see Technical data
– Pressure limitation to a safe level even with faulty electronics
(solenoid current I > I
max
)
– For subplate attachment, mounting hole configuration to
ISO 4401-03-02-0-05. Subplates as per catalog sheet
RE 45053 (order separately)
– Plug-in connector to DIN 43563-AM6, see catalog sheet
RE 08008 (order separately)
– Data for the on-board trigger electronics
• Complies with CE, EMC directives EN 61000-6-2: 2002-08
and EN 61000-6-3: 2002-08
• U
B
= 24 V
nom
DC
• Electrical connection 6P+PE
• Signal actuation
– Standard 0...+ 10 V (A1)
– Version 4...20 mA (F1)
• Valve curve calibrated at the factory
D
E
TP
A
2/10 Bosch Rexroth AG Hydraulics
DREBE6X RE 29195/05.06
Ordering data
Proportional 3-way pres-
sure reducing valve with
inductive position trans-
ducer, pilot operated
With on-board electronics = E
Nominal size = 6
Mounting hole configuration
to ISO 4401-03-02-0-05 = X
Unit series 10 to 19 = 1X
(10 to 19: installation and connection dimensions
unchanged)
Max. pressure stage
up to 75 bar = 75
0
up to 175 bar = 175
up to 310 bar = 310
Without non-return valve = M
Voltage supply of trigger electronics = G24
24 V DC
Further information
in plain text
M = NBR seals, suitable for
mineral oils (HL, HLP)
to DIN 51524
Interface for trigger electronics
A1 = Setpoint input 0...+10 V
F1 = Setpoint input 4...20 mA
K31 = Electrical connection
without plug-in connector,
with unit plug to DIN 43563-AM6
Order plug-in connector separately
DREB E 6 X 1X M G24 K31 M *
Preferred types
Type....A1 (0...+10 V) Material Number Type....F1 (4...20 mA) Material Number
DREBE6X–1X/75MG24K31A1M 0 811 402 082 DREBE6X–1X/175MG24K31F1M 0 811 402 083
DREBE6X–1X/175MG24K31A1M 0 811 402 080 DREBE6X–1X/310MG24K31F1M 0 811 402 085
DREBE6X–1X/310MG24K31A1M 0 811 402 081
Symbol
For on-board electronics
Hydraulics Bosch Rexroth AG
RE 29195/05.06 DREBE6X
3/10
Function, sectional diagram
General
Type DREBE6X proportional pressure reducing valves are
pilot operated with a 3-way main stage.
The pilot valve (pressure relief valve pilot stage) is supplied
internally with a controlled flow of pilot oil via P.
The valves are actuated by means of a position-controlled pro-
portional solenoid with on-board electronics.
With these valves, the pressure in A (consumer) can be
infinitely adjusted and reduced in relation to the setpoint.
Basic principle
To adjust the system pressure in A, a setpoint is set in the trig-
ger electronics. Based on this setpoint, the electronics control
the position of the solenoid against the spring force. The pro-
portional solenoid is positioned precisely on the spring charac-
teristic curve. The pilot stage is supplied with oil from P at
a flow rate of < 0.6 l/min via a flow control valve. The pilot pres-
sure is compared with the consumer pressure (plus spring)
in A and regulated.
The spring results in p
Amin
= p in T.
Pressure limitation for maximum safety
If a fault occurs in the electronics, so that the solenoid current
(I
max
) would exceed its specified level in an uncontrolled
manner, the pressure cannot rise above the level determined by
the maximum spring force.
Testing and service equipment
Test box type VT-PE-TB3, see RE 30065
Measuring adapter 6P+PE type VT-PA-2, see RE 30068
Proportional solenoid with position transducer Valve body
Accessories
Type Material Number
(4 x) f ISO 4762-M5x30-10.9
Cheese-head bolts
2 910 151 166
* Plug-in connectors 6P+PE,
see also RE 08008
KS 1 834 482 022
KS 1 834 482 026
MS 1 834 482 023
MS 1 834 482 024
KS 90° 1 834 484 252
EN 61000-6-2: 2002-08
EN 61000-6-3: 2002-08
Flow control valve for pilot
oil flow
4/10 Bosch Rexroth AG Hydraulics
DREBE6X RE 29195/05.06
Technical data
General
Construction Pilot stage Poppet valve
Main stage Spool valve
Actuation Proportional solenoid with position control and OBE
Connection type Subplate, mounting hole configuration NG6 (ISO 4401-03-02-0-05)
Mounting position Optional
Ambient temperature range °C –20...+50
Weight kg 3.3
Vibration resistance, test condition
Max. 25 g, shaken in 3 dimensions (24 h)
Hydraulic (measured with HLP 46,
oil
= 40 °C ±5 °C)
Pressure fluid Hydraulic oil to DIN 51524...535, other fluids after prior consultation
Viscosity range recommended mm
2
/s 20...100
max. permitted mm
2
/s 10...800
Pressure fluid temperature range °C –20...+70
Maximum permitted degree of contami-
nation of pressure fluid
Purity class to ISO 4406 (c)
Class 18/16/13
1)
Direction of flow
See symbol
Max. set pressure in A bar
(at Q
min
= 1 l/min)
75 175 310
Minimum pressure in A bar 0 (relative) or pressure in T
Min. inlet pressure in P bar
p
P
= p
A
+ ⱖ 5
Max. working pressure bar Port P: 315
Max. pressure bar Port T: 250 (B sealed)
Internal pilot oil flow l/min approx. 0.6 (with closed-loop control)
Max. flow l/min 40
Static/Dynamic
Hysteresis % ⬉ 1 of max. set pressure
Manufacturing tolerance % ⬉ ±5 of max. set pressure
Response time 100 % signal change ms 50
Stellzeit 010 % signal change ms 20
Thermal drift
< 1 % at ∆T = 40 °C
Conformity
EN 61000-6-2: 2002-08
EN 61000-6-3: 2002-08
1)
The purity classes stated for the components must be complied with in hydraulic systems.
Effective filtration prevents problems and also extends the service life of components.
For a selection of filters, see catalog sheets RE 50070, RE 50076 and RE 50081.
Hydraulics Bosch Rexroth AG
RE 29195/05.06 DREBE6X
5/10
Technical data
Electrical, trigger electronics integrated in valve
Cyclic duration factor % 100
Degree of protection IP 65 to DIN 40050 and IEC 14434/5
Connection Plug-in connector 6P+PE, DIN 43563
Supply voltage
Terminal A:
Terminal B: 0 V
24 V DC
nom
Min. 21 V DC/max. 40 V DC
Ripple max. 2 V DC
Power consumption
Solenoid 45 mm = 40 VA max.
External fuse 2.5 A
F
Input, “standard” version A1
Terminal D: U
E
Terminal E:
Differential amplifier, R
i
= 100 kΩ
0...+10 V
0 V
Input, “mA signal” version F1
Terminal D: I
D–E
Terminal E: I
D–E
Burden, R
sh
= 200 Ω
4...20 mA
Current loop I
D–E
feedback
Max. voltage to differential inputs
over 0 V
D 씮 B
E 씮 B
}
max. 18 V DC
Test signal, “standard” version A1
Terminal F: U
Test
Terminal C:
LV DT
0...+10 V
Reference 0 V
Test signal, “mA signal” version F1
Terminal F: I
F–C
Terminal C: I
F–C
LVDT signal 4...20 mA at external load 200...500 Ω max.
4...20 mA output
Current loop I
F–C
feedback
Safety earth conductor and shield See pin assignment (installation in conformity with CE)
Recommended cable See pin assignment
up to 20 m 7 x 0.75 mm
2
up to 40 m 7 x 1 mm
2
Calibration Calibrated at the factory, see valve curve
Version A1:
Standard
Version F1:
mA signal
Supply 24V =
Signal: 0…+10V
LVDT Signal: 0…+10V
(Ri = 100kΩ)
A
PT
Supply 24V =
Signal: 4…20mA
LVDT Signal: 4…20mA
(Bürde: 200Ω)
A
PT
6/10 Bosch Rexroth AG Hydraulics
DREBE6X RE 29195/05.06
Connection
For electrical data, see page 5 and
Operating Instructions 1 819 929 083
Technical notes for the cable
Version: – Multi-wire cable
– Extra-finely stranded wire
to VDE 0295, Class 6
– Safety earth conductor, green/yellow
– Cu braided shield
Type: – e.g. Ölflex-FD 855 CP
(from Lappkabel company)
No. of wires: – Determined by type of valve,
plug type and signal assignment
Cable Ø: – 0.75 mm
2
up to 20 m long
– 1.0 mm
2
up to 40 m long
Outside Ø: – 9.4...11.8 mm – Pg 11
– 12.7...13.5 mm – Pg 16
Important
Voltage supply 24 V DC nom.,
if voltage drops below 18 V DC, rapid shutdown resembling
“Enable OFF” takes place internally.
In addition, with the “mA signal” version:
I
D–E
⭌ 3 mA – valve is active
I
D–E
⬉ 2 mA – valve is deactivated.
Electrical signals emitted via the trigger electronics (e.g. actual
values) must not be used to shut down safety-relevant machine
functions!
(See also European Standard, “Technical Safety Requirements
for Fluid-Powered Systems and Components – Hydraulics”,
EN 982.)
Hydraulics Bosch Rexroth AG
RE 29195/05.06 DREBE6X
7/10
On-board trigger electronics
Circuit diagram/pin assignment
Version A1: U
D–E
0...+10 V
Pin assignment
Version A1: U
D–E
0...+10 V
(R
i
= 100 kΩ)
Supply U
B
Supply zero
Ref. zero *
Setpoint 0...+10 V
Actual valve 0...+10 V
Safety earth
conductor 쓔
Shield
* Do not connect to supply
zero!
8/10 Bosch Rexroth AG Hydraulics
DREBE6X RE 29195/05.06
On-board trigger electronics
Circuit diagram/pin assignment
Version F1: I
D–E
4...20 mA
Pin assignment 6P+PE
Version F1: I
D–E
4...20 mA
(R
sh
= 200 kΩ)
DC
mA
Diff.
amp.
PID
OBE
R
sh
200Ω
4…20mA
Logic
+U
B
+U
B
+
-
+15 V
-
15 V
DC
S
U
V
A
2.5 AF
+24 V=
Supply
Safety earth conductor
Shield
Supply zero
Loop I
F–C
I
D–E
4...20 mA
Test I
F–C
(4...20 mA)
0 V
B
C
D
E
F
D
E
TP
A
Hydraulics Bosch Rexroth AG
RE 29195/05.06 DREBE6X
9/10
Characteristic curves (measured with HLP 46,
oil
= 40 °C ±5 °C)
Pressure in port A as a function of the setpoint
* Factory setting at Q = 1 l/min
+5 % manufacturing tolerance
(of max. set pressure)
1)
Version: U
D–E
= 0...+10 V
2)
Version: I
D–E
= 4...20 mA
U
D-E
1
)
[V]
I
D-E
2
)
[mA]
4,0 7,2 10,4 13,6 16,8 20
Pressure in port A proportionate to the
maximum flow rate of the main stage
Set pressure
p % p
max
= f (Q
P–A
/Q
A–T
)
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +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 state-
ments 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 judgement and verification. It must be
remembered that our products are subject to a natural process of wear and
aging.
10/10 Bosch Rexroth AG Hydraulics
DREBE6X RE 29195/05.06
Unit dimensions (nominal dimensions in mm)
Required surface quality of mating
component
Mounting hole configuration: NG6
(ISO 4401-03-02-0-05)
For subplates, see catalog sheet RE 45053
1)
Deviates from standard
2)
Thread depth:
Ferrous metal 1.5 x Ø
Non-ferrous 2 x Ø
PATBF
1
F
2
F
3
F
4
21.5 12.5 21.5 30.2 0 40.5 40.5 0
25.9 15.5 5.1 15.5 0 –0.75 31.75 31
8
1)
8
1)
8
1)
8
1)
M5
2)
M5
2)
M5
2)
M5
2)
X
Y
Not included in scope of delivery
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +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 state-
ments 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 judgement and verification. It must be
remembered that our products are subject to a natural process of wear and
aging.
Hydraulics Bosch Rexroth AG
RE 29195/05.06 DREBE6X
Notes
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +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 state-
ments 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 judgement and verification. It must be
remembered that our products are subject to a natural process of wear and
aging.
DREBE6X RE 29195/05.06
Bosch Rexroth AG Hydraulics
Notes
