Electric Drives Linear Motion and

and Controls Hydraulics Assembly Technologies Pneumatics Service

RA 29160/04.05 1/10
Proportional Replaces: 06.98

pressure relief valve,

pilot operated

Model DBE(M) and DBE(M)E

Sizes 10, 25 1)
Component series 5X
Maximum operating pressure 350 bar
Maximum flow 400 L/min

Table of contents Features

Contents Page – Pilot operated valve for limiting a system pressure

Features 1 – Operation by proportional solenoid
Ordering code 2 – For subplate mounting:
Preferred types 2 Position of ports according to DIN 24340, form E
Symbols 2 subplates according to data sheet RE 45064,
Function, section 3 (separate order, see pages 8 and 9)
Technical data 4 and 5 – Optional maximum pressure relief function by means of
Control electronics 5 and 6
spring-loaded pilot valve
Electrical connection, cable sockets 5 – Valve and control electronics from a single source
Characteristic curves 7 – External control electronics for types DBE and DBEM:
Unit dimensions 8 and 9
• Analogue amplifier type VT-VSPA1-1 in Euro-card
format (separate order, see page 5)
• Digital amplifier type VT-VSPD-1 in Euro-card format
(separate order, see page 5)
• Amplifier type VT 11131 of modular design
1)
(separate order, see page 5)
Size 32, component series 3X, see data sheet
RE 29142 – Integrated electronics (OBE) with types DBEE and
DBEME:
• Low tolerances of the command value/pressure
characteristic curve
• Up and down ramps can be adjusted independently
of each other
2/12 Bosch Rexroth Corp. | Industrial Hydraulics DBE(M) and DBE(M)E | RA 29160/04.05

Ordering code

DBE 5X G24 *

Proportional pressure relief valve Further details in clear text

Without maximum Seal material
pressure relief function = No code M= NBR seals,
With maximum suitable for mineral oil
pressure relief function =M (HL, HLP) to DIN 51524
For external control electronics = No code V= FKM seals
With integrated electronics (OBE) =E Electrical connection
Size 10 = 10 for DBE; DBEM:
Size 25 = 20 K4 = Without cable socket, with com-
ponent plug to DIN EN 175301-803
Component series 50 to 59 = 5X
Cable socket – separate
(50 to 59: unchanged installation and connection dimensions)
order, see page 5
Pressure stage
for DBEE; DBEME:
up to 50 bar (725 PSI) = 50 K31 = Without cable socket, with com-
up to 100 bar (1450 PSI) = 100 ponent plug to DIN EN 175201-804
up to 200 bar (2900 PSI) = 200 Cable socket – separate
up to 315 bar (4569 PSI) = 315 order, see page 5
up to 350 bar (5075 PSI) = 350
Supply voltage of electronics
External pilot oil drain =Y
G24 = 24 V DC
Unloading port X, external pilot oil drain = XY

Standard types

Size 10 Size 25

Type DBEME 10 Material no. Type DBEME 20 Material no.

DBEME 10-5X/50YG24K31M R900908585 DBEME 20-5X/50YG24K31M R900954711
DBEME 10-5X/100YG24K31M R900954707 DBEME 20-5X/100YG24K31M R900937307
DBEME 10-5X/200YG24K31M R900954708 DBEME 20-5X/200YG24K31M R900954709
DBEME 10-5X/315YG24K31M R900536812 DBEME 20-5X/315YG24K31M R900536813
DBEME 10-5X/350YG24K31M R900941261 DBEME 20-5X/350YG24K31M R900954710

Symbols

Type DBE…-5X/…Y… Type DBE…-5X/…XY… Type DBEM…-5X/…Y… Type DBEM…-5X/…XY…

B B B B

A Y A XY A Y A XY

Type DBEE…-5X/…Y… Type DBEE…-5X/…XY… Type DBEME…-5X/…Y… Type DBEME…-5X/…XY…

B B B B

A Y A XY A Y A XY
DBE(M) and DBE(M)E | RA 29160/04.05 Industrial Hydraulics | Bosch Rexroth Corp. 3/12

Function, section

1 9 15 12 2
Schnitt a–a
a
11

15 Y
a
10
14
8
6
7 5
4
Type DBEM…-5X/…
3 with maximum pressure relief function

13
13 Version "XY" – with additional unload-
ing port X
X A B
14 Port Y –
Type DBE…-5X/…XY…G24K4. external pilot oil drain,
separate and at zero pressure to tank

Valves of types DBE and DBEM are pilot operated pressure Type DBEM…
relief valves. They are used to limit the pressure in hydraulic Optionally the valve is available with an additional spring loaded
systems. pilot valve (15) for maximum pressure limitation (redundant pres-
These valves can be used to infinitely adjust the pressure to be sure relief function).
limited in relation to the electrical command value. We generally recommend the selection of this version!
Basically, these valves consist of a pilot valve (1) installed in a (When using these valves, observe the notes on page 4.)
common housing, with proportional solenoid (2) and the main Type DBEE and DBEME – with integrated electronics (OBE)
spool insert (3). In terms of function and design, these valves are basically the
Type DBE… same as types DBE and DBEM, except for the integrated elec-
The pressure present in port A acts on the underside of the main tronics. The control electronics which is accommodated in hous-
spool (3). At the same time, the pressure is applied via orifice (4), ing (16) receives the supply and command value voltages via the
ring channel (5) and orifice (6) to the spring loaded side of the cable socket (17).
main spool (3). The hydraulic force at the pilot poppet (12) acts The command value/pressure characteristic curve (zero point
via the radial bore (7), control bore (8) and orifice (9) against the at valve seat (11) and gradient at Imax potentiometer (R30) in
command value-dependent force of the proportional solenoid (2). the control electronics) is factory-set with very low manufactur-
When the hydraulic force overcomes the solenoid force, the pilot ing tolerances.
poppet (12) opens. Due to this, pilot oil can drain via port Y (14) The ramp times for pressure build-up and reduction can be set
to the tank and causes a pressure differential across the orifice, independently of each other using two potentiometers.
which acts on the main spool (3) and lifts it against the force of For further details regarding the integrated electronics, see
the return spring (10). The connection of ports A to B is opened pages 5 and 6.
and there is no further pressure increase.
At port X (13) the valve may be unloaded or the maximum pres-
sure limited.

17

16

Type DBEE…-5X/…G24K31...
4/12 Bosch Rexroth Corp. | Industrial Hydraulics DBE(M) and DBE(M)E | RA 29160/04.05

Technical data (for applications outside these parameters, please consult us!)
General
Size Size 10 25
Weight – DBE and DBEM kg (lb) 3.4 3.8
– DBEE and DBEME kg (lb) 3.5 3.9
Installation orientation Optional
Storage temperature range °C (°F) – 20 to + 80 (– 68 to + 176)
Ambient temperature – DBE and DBEM °C (°F) – 20 to + 70 (– 68 to + 158)
range – DBEE and DBEME °C (°F) – 20 to + 50 (– 68 to + 122)
Hydraulic [measured with HLP 46 at 40°C ± 5°C (104°F ± 41°F )]
Size Size 10 25
Max. operating pressure – Ports A, B and X bar (PSI) 350
– Port Y Separate and at zero pressure to tank
Max. set pressure – Pressure stage bar (PSI) 50 (725)
– Pressure stage bar (PSI) 100 (1450)
– Pressure stage bar (PSI) 200 (2900)
– Pressure stage bar (PSI) 315 (4569)
– Pressure stage bar (PSI) 350 (5076)
Min. set pressure at zero command value bar (PSI) See characteristic curve on page 7
Maximum pressure relief function (infinitely adjustable) Pressure adjustment range: Factory setting:
– Pressure stage bar (PSI) 30 to 70 (435 to 1015) to 70 bar (1015)
– Pressure stage bar (PSI) 50 to 130 (725 to 1886) to 130 bar (1886)
– Pressure stage bar (PSI) 90 to 230 (1305 to 3336) to 230 bar (
– Pressure stage bar (PSI) 150 to 350 (2176 to 5076) to 350 bar (
– Pressure stage bar (PSI) 200 to 390 (2901 to 5657) to 390 bar (
Max. flow L/min (GPM) 200 (52.83) 400 (105.67)
Pilot oil flow L/min (GPM) 0.5 to 1.8 (0.13 to 0.47) 0.5 to 2.1 (0.13 to 0.55)
Hydraulic fluid Mineral oil (HL, HLP) to DIN 51524
Other hydraulic fluids on enquiry!
Hydraulic fluid temperature range °C (°F) – 20 to + 80
2
Viscosity range mm /s (SUS) 15 to 380
Max. permissible degree of contamination of the hydraulic Class 20/18/15 1)
fluid - cleanliness class to ISO 4406 (c)
Hysteresis (see command value/pressure characteristic curve) % ± 1.5 of max. set pressure
Repeatability % < ± 2 of max. set pressure
Linearity % ± 3.5 of max. set pressure
Tolerance of the command – DBE and DBEM % ± 2.5 of max. set pressure
value/pressure curve, – DBEE and DBEME % ± 1.5 of max. set pressure
referred to the hysteresis curve, increasing pressure
Step response Tu + Tg 0 % → 100 % ms 150 depends on flow and on the
100 % → 0 % ms 150 line volume (A) of the system

1)
The cleanliness classes specified for components For the selection of filters, see data sheets RE 50070,
must be adhered to in hydraulic systems. Effective filtra- RE 50076, RE 50081, RE 50086 and RE 50088.
tion prevents malfunction and, at the same time, increas-
es the service life of components.
DBE(M) and DBE(M)E | RA 29160/04.05 Industrial Hydraulics | Bosch Rexroth Corp. 5/12

Technical data (for applications outside these parameters, please consult us!)
Electrical
Supply voltage V 24 DC
Min. control current mA 100
Max. control current – DBE and DBEM mA 1600
– DBEE and DBEME mA 1440 to 1760
Coil resistance – Cold value at 20° C Ω 5.4
– Max. hot value Ω 7.8
Duty cycle % 100
Electrical connection – DBE and DBEM With component plug to DIN EN 175301-803
Cable socket to DIN EN 175301-803 1)
– DBEE and DBEME With component plug to DIN EN 175201-804
Cable socket to DIN EN 175201-804 1)
Type of protection of the valve to EN 60529 IP 65 with cable socket mounted and locked
Control electronics
– For DBEE and DBEME Integrated in the valve, see page 6
– For DBE and DBEM
Amplifier in Euro-card format analogue VT-VSPA1-1 according to data sheet RE 30111
(separate order) digital VT-VSPD-1 according to data sheet RE 30523
Amplifier of modular design (separate order) analogue VT 11131 according to data sheet RE 29865

1)
Separate order, see below
Note: For details regarding environment simulation compatibility), climate and mechanical stress, see RE
testing in the fields of EMC (electromagnetic 29160-U (declaration on environmental compatibility).

Electrical connection, cable sockets (nominal dimensions in mm)

For types DBE and DBEM – for external control electronics 27.5
Cable socket to DIN EN 175301-803 (1.08)
Separate order: Material no. R901017011
18 (0.71)

10A
250V 2
GDM

1
Connection to component plug Connection to cable socket
43 10 (0.39) 2
(1.69)
(1 34)

PE PE
34.2

1 2 1 2
to amplifier
1
(0 2 )
5.5

For types DBEE and DBEME – with integrated electronics (OBE) 1 Fixing screw M3
Cable socket to DIN EN 175201-804 Tightening torque MT = 0.5 Nm
Separate order: Material no. R900021267 (version made of plastic )

91 (3.58)
(1.06)

A
Ø 27

F
B
0.25...Ø 0.43)

C E
D
Ø 6.5…Ø 11

For the pin assignment, see block circuit diagram on page 6

6/12 Bosch Rexroth Corp. | Industrial Hydraulics DBE(M) and DBE(M)E | RA 29160/04.05

Integrated electronics for types DBEE and DBEME

Function
The integrated electronics is controlled via the two differential ently of the solenoid coil resistance.
amplifier connections D and E.
The gradient of the command value/current characteristic
The ramp generator generates from a command value step curve, and hence also the gradient of the command value/pres-
change (0 to 10 V or 10 to 0 V) a delayed rise or drop in the sure characteristic curve of the proportional pressure valve may
solenoid current. The rise time can be adjusted by means of be altered using potentiometer R30.
potentiometer R14, the drop time by means of potentiometer
Potentiometer R43 is used to adjust the biasing current. This
R13.
setting should not be altered. If necessary, the zero point of the
The maximum ramp time of 5 s is only possible over the entire command value/pressure characteristic curve can be adjusted
command value range. With smaller command value changes at the valve seat.
the ramp time shortens accordingly.
The power stage of the electronics for controlling the propor-
The command value/solenoid current characteristic curve is tional solenoid is a chopper amplifier. It is pulse-width-modu-
matched to the valve by the characteristic curve generator, lated with a clock frequency of 300 Hz.
so that non-linearities in the hydraulics can be compensated
The solenoid current can be measured at the two measurement
for and hence a linear command value/pressure characteristic
sockets MP1 and MP2. A voltage drop of 0.352 V at the meas-
curve is obtained.
urement resistor corresponds a to solenoid current of 1.6 A.
The current regulator controls the solenoid current independ-

Block circuit diagram / pin assignment of integrated electronics

+U
Differential Ramp Char. curve Current Chopper
amplifier generator generator regulator amplifier
D R 14 R 13 Imax Imin
Command value 0 to 10 V + U
R 30 I R 43
E U
0V reference potential – Solenoid
F n.c. Ramp Ramp
"up" "down"
C n.c.
Supply MP1
+U
voltage: 300 Hz
A +7,5 V Measuring resis- 1,6 A =
Ueff: 22 to 33 V + =
tor R=0.22 Ω 0,352 V
Internal reference point
B = MP2
0V = -7,5 V
Oscillator
Power supply unit 0V

Supply voltage
Power supply unit with rectifier
Single phase rectification or three phase bridge: Ueff = 22 to 33 V
Residual ripple content at power supply unit: < 5 % 30 0.75 mm2
Min. supply voltage in V →

Output current: Ieff = max. 1.4 A

28
Supply cable: – Recommended: 5-core 0.75 or 1 mm2 1 mm2
with PE conductor and shield
26
– Outside diameter 6.5 to 11 mm
– Shield to 0 V supply voltage 24
– Max. permissible length 100 m
The minimum supply voltage of the power supply unit depends 22
on the length of the supply cable (see diagram). 20 40 60 80 100
For lengths > 50 m a capacitor of 2200 μF must be installed (66) (131) (197) (262) (328)
near the valve in the supply line. Length of supply cable in m →
DBE(M) and DBE(M)E | RA 29160/04.05 Industrial Hydraulics | Bosch Rexroth Corp. 7/12

Characteristic curves - measured with HLP-46, ϑoil = 40°C ±5°C (104°F ±41°F)
Set pressure in dependence upon the flow Min. set pressure at command value 0

Min. set pressure in bar (PSI) →

Size 10 Size 25
Min. set pressure in bar (PSI) →

10 (145)
400 (5802)
350 (5075) 8 (116)
300 (4351) Size 10
250 (3626) 6 (87)
200 (2901) 4 (58) Size 25
150 (2176)
100 (1450) 2 (29)
50 (725)
0 100 200 300
0 100 200 300 400 Flow in L/min (GPM) →
(26.42) (52.83) (79.25) (105.67)
The characteristic curves are valid for an outlet pressure in
Flow in L/min (GPM) →
B = 0 bar over the entire flow range.
Note: In order that the min. set pressure can be achieved,
the biasing current must not exceed 100 mA.

Pressure stage 50 bar

Command value/pressure characteristic curves

Pressure in bar (PSI) →

(measured at a flow of 27 L/min) 50 (725)
45 (653)
40 (580)
35 (508)
30 (435)
25 (363)
20 (290)
15 (218)
10 (145)
5 (73)
0 25 50 75 100
Command value in % →
Pressure stage 100 bar
Pressure stage 200 bar
100 (1450)
200 (2901)
Pressure in bar (PSI) →

Pressure in bar (PSI) →

90 (1305)
180 (2611)
80 (1160)
160 (2321)
70 (1015)
140 (2031)
60 (870)
120 (1740)
50 (725)
100 (1450)
40 (580)
80 (1160)
30 (435) 60 (870)
20 (290) 40 (580)
10 (145) 20 (290)
0 25 50 75 100 0 25 50 75 100
Command value in % → Command value in % →
Pressure stage 315 bar
Pressure stage 350 bar
315 (4569)
300 (4351) 350 (5075)
Pressure in bar (PSI) →

Pressure in bar (PSI) →

250 (3626) 300 (4351)

200 (2901) 250 (3626)

150 (2176) 200 (2901)

150 (2176)
100 (1450)
100 (1450)
50 (725)
50 (725)

0 25 50 75 100 0 25 50 75 100
Command value in % → Command value in % →
8/12 Bosch Rexroth Corp. | Industrial Hydraulics DBE(M) and DBE(M)E | RA 29160/04.05

Unit dimensions: Size 10 - nominal dimensions in mm (inches)

(0.59)
4 6 7 9 8 10 3

15
Ø 25 (0.98)
G 1/4

145 (5.71)
17.3 (0.68)

45(1.77)
129 (5.08)
104 (4.09)

78 (3.07)
Ø 12.3
(3.07)
26
(0.48) X A B
5 (0.20)

Ø 21.8 (0.86)
Ø 26.4 (1.04) Ø6 Ø 14 (0.55)
Ø 17.5 (0.69) (0.24)
2 21 (0.83) 1
47.5 (1.87)
22.5 53.8 (2.12)
(0.86) Ø 14 (0.55)
78 (3.07)
53.8 (2.12)

X
A B
Y

22.1 (0.87)
27 (1.06)
15 (0.59) 89 (3.50)
196 (7.72)
5
263 (10.35) with integrated electronics

1 Different seal rings for ports A and B Required 0,01/100mm

2 Seal ring for port X surface quality of the
Rzmax4
3 Space required to remove cable socket mating part
4 Nameplate
5 Locating pin Tolerances to: – General tolerances ISO 2768-mK
6 Maximum pressure relief function (types DBEM, DBEME) – Tolerancing principle ISO 8015
When using these valves, observe the notes on page 4!
Subplates to data sheet RE 45064 and valve fixing screws must
7 External pilot oil drain, be ordered separately.
separate and at zero pressure to tank Subplates: G 545/01, G 3/8 (SAE-6; 9/16-18)
8 Cable socket for type DBE(M) G 546/01, G 1/2 (SAE-8; 3/4-16)
(separate order, see page 5). Valve fixing screws:
9 Integrated electronics (OBE) 4 socket head cap screws M12 x 50 DIN 912-10.9
(1/2-13 UNC x 2”)
10 Cable socket for type DBE(M)E
Tightening torque MT = 70 Nm (51.63 lb-ft)
(separate order, see page 5).
DBE(M) and DBE(M)E | RA 29160/04.05 Industrial Hydraulics | Bosch Rexroth Corp. 9/12

Unit dimensions: Size 25 - nominal dimensions in mm (inches)

(0.59)
4 6 7 9 8 10

15
Ø 25 (0.98)
G 1/ 4
17.3 (0.68)

45(1.77)
130 (5.12)

146 (5.75)
105 (4.13)

79 (3.11)
Ø 12.3

(3.07)
(0.48)

26
X A B
5 (0.20)

Ø 40.7 (1.60)
Ø 40.7 (1.60) Ø6
2 (0.24)
Ø 25 (0.98)
Ø 17.5 (0.69)
1 34.5 11.1 (0.44)
1
(1.36) 55.6 (2.19)
23.8 (0.94) Ø 26 (1.02)
66.7 (2.63)
Ø 18 (0.71)
100 (3.94)
70 (2.76)

X
A B
Y

33 (1.30)
33.4 (1.31)
15 (0.59) 117 (4.61)
5 195 (7.68)
262 (10.31) with integrated electronics

1 Identical seal rings for ports A and B Required 0,01/100mm

2 Seal ring for port X surface quality of the
Rzmax4
3 Space required to remove cable socket mating part

4 Nameplate
Tolerances to: – General tolerances ISO 2768-mK
5 Locating pin – Tolerancing principle ISO 8015
6 Maximum pressure relief function (types DBEM, DBEME)
When using these valves, observe the notes on page 4! Subplates to data sheet RE 45064 and valve fixing screws must
be ordered separately.
7 External pilot oil drain, separate and at zero pressure to tank
Subplates: G 408/01, G 3/4 (SAE-12; 1-1/16-12)
8 Cable socket for type DBE(M G 409/01, G 1 (SAE-16; 1-5/16-20)
(separate order, see page 5) Valve fixing screws:
9 Integrated control electronics 4 socket head cap screws M16 x 50 DIN 912-10.9
10 Cable socket for type DBE(M)E (5/8-11 UNC x 2”)
(separate order, see page 5) Tightening torque MT = 150 Nm (110.63 lb-ft)
10/12 Bosch Rexroth Corp. | Industrial Hydraulics DBE(M) and DBE(M)E | RA 29160/04.05

Notes

Bosch Rexroth Corp. © 2004 Bosch Rexroth Corporation

Industrial Hydraulics All rights reserved. Neither this document nor any part of it may be reproduced,
2315 City Line Road duplicated circulated or disseminated, whether by copy, electronic format or
Bethlehem, PA 18017-2131 any other means, without the prior consent and authorization of Bosch Rexroth
USA Corporation.
Telephone (610) 694-8300 The data and illustrations in this brochure/data sheet are intended only to
Facsimile (610) 694-8467 describe or depict the products. No representation or warranty, either express
www.boschrexroth-us.com or implied, relating to merchantability or fitness for intended use, is given or
intended by virtue of the information contained in this brochure/data sheet. The
information contained in this brochure/data sheet in no way relieves the user of it
obligation to insure the proper use of the products for a specific use or applica-
tion. All products contained in this brochure/data sheet are subject to normal
wear and tear from usage.
Subject to change.
 Bosch Rexroth Corp. | Industrial Hydraulics (Z)DBE and (Z)DBEE | RA 29158/04.05

Notes

Bosch Rexroth Corp. © 2004 Bosch Rexroth Corporation

Industrial Hydraulics All rights reserved. Neither this document nor any part of it may be reproduced,
2315 City Line Road duplicated circulated or disseminated, whether by copy, electronic format or
Bethlehem, PA 18017-2131 any other means, without the prior consent and authorization of Bosch Rexroth
USA Corporation.
Telephone (610) 694-8300 The data and illustrations in this brochure/data sheet are intended only to
Facsimile (610) 694-8467 describe or depict the products. No representation or warranty, either express
www.boschrexroth-us.com or implied, relating to merchantability or fitness for intended use, is given or
intended by virtue of the information contained in this brochure/data sheet. The
information contained in this brochure/data sheet in no way relieves the user of it
obligation to insure the proper use of the products for a specific use or applica-
tion. All products contained in this brochure/data sheet are subject to normal
wear and tear from usage.
Subject to change.
 Bosch Rexroth Corp. | Industrial Hydraulics (Z)DBE and (Z)DBEE | RA 29158/04.05

Notes

Bosch Rexroth Corp. © 2004 Bosch Rexroth Corporation

Industrial Hydraulics All rights reserved. Neither this document nor any part of it may be reproduced,
2315 City Line Road duplicated circulated or disseminated, whether by copy, electronic format or
Bethlehem, PA 18017-2131 any other means, without the prior consent and authorization of Bosch Rexroth
USA Corporation.
Telephone (610) 694-8300 The data and illustrations in this brochure/data sheet are intended only to
Facsimile (610) 694-8467 describe or depict the products. No representation or warranty, either express
www.boschrexroth-us.com or implied, relating to merchantability or fitness for intended use, is given or
intended by virtue of the information contained in this brochure/data sheet. The
information contained in this brochure/data sheet in no way relieves the user of it
obligation to insure the proper use of the products for a specific use or applica-
tion. All products contained in this brochure/data sheet are subject to normal
wear and tear from usage.
Subject to change.