1/12
Proportional
pressure relief valve,
pilot operated
Types (Z)DBE and (Z)DBEE
Size 6
Component series 1X
Maximum operating pressure 315 bar
Maximum flow 30 L/min
RE 29158/04.05
Replaces: 11.02
Table of contents
Contents Page
Features 1
Ordering code 2
Preferred types 2
Symbols 3
Function, section 3, 4
Te chnical data 5, 6
Control electronics 6, 7
Electrical connection, cable socket 6
Characteristic curves 8, 9
Unit dimensions 10, 11
Features
– Valve for limiting a system pressure
– Operation by proportional solenoid
– For subplate mounting or sandwich plate design:
Position of ports to DIN 24340 (without locating bore) and
ISO 4401 (with locating bore)
Subplates to data sheet RE 45052
(separate order, see page 10 and 11)
– Valve and control electronics from a single source
– External control electronics for types DBE and ZDBE:
• Analogue amplifier type VT-VSPA1-1 in Euro-card format
(separate order), see page 6
• Digital amplifier type VT-VSPD-1 in Euro-card format
(separate order), see page 6
• Analogue amplifier of modular design type VT 11131
(separate order), see page 6
– Integrated electronics (OBE) on types DBEE and ZDBEE:
• Low manufacturing tolerances for the command value/
pressure characteristic curve
• Up and down ramps can be adjusted independently of each
other
H/A 3598/93
2/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE
RE 29158/04.05
Ordering code
Subplate mounting
= No code
Sandwich plate = Z
Proportional pressure relief valve
For external control electronics
= No code
With integrated electronics (OBE) = E
Size 6 = 6
Subplate mounting = No code
Sandwich plate P → T = VP
Position of cable socket for type ZDBE
Position of housing with electronics (OBE) for type ZDBEE
Component series 10 to19 = 1X
(10 to 19: unchanged installation and connection dimensions)
Max. set pressure
Pressure stage 50 bar = 50
Pressure stage 100 bar = 100
Pressure stage 200 bar = 200
Pressure stage 315 bar = 315
Further details
in clear text
Seal material
M = NBR seals,
suitable for mineral oil
(HL, HLP) to DIN 51524
V = FKM seals,
suitable for
phosphate esters
K4 =
Electrical connection
for DBE; ZDBE:
Without cable socket,
with component plug to
DIN EN 175301-803
Cable socket– separate
order, see page 6
K31 =
for DBEE; ZDBEE:
Without cable socket,
with component plug to
DIN EN 175201-804
Cable socket– separate
order, see page 6
Supply voltage of electronics
G24 = 24 V DC
No code =
Internal pilot oil drain (recommen-
dation: suplate mounting up to q
Vmax
=15 L/min)
Y = External pilot oil drain
(possible only with subplate mounting)
DBE 6 1X G24
*
Preferred types
Type DBEE Type ZDBEE
Further preferred types and standard components
can be found in the EPS (standard price list).
Type Material no.
DBEE 6-1X/50YG24K31M R900954432
DBEE 6 -1X/100YG24K31M R900919359
DBEE 6-1X/200YG24K31M R900954433
DBEE 6-1X/315YG24K31M R900546987
Type Material no.
ZDBEE 6 VP2-1X/50G24K31M R900954434
ZDBEE 6 VP2-1X/100G24K31M R900954435
ZDBEE 6 VP2-1X/200G24K31M R900954436
ZDBEE 6 VP2-1X/315G24K31M R900954437
= 3
= 4
= 2
Housing with
electronics (OBE)
Cable socket
= 1
1)
1)
1)
1)
1)
Valve mounting side (R-ring recesses in the housing)
YP
YP
P
T
P
A
T
B
P
1
2
T
T
T
A
T
B
P
1
2
A(Y) T P
123
4
5
6
789
12
Hydraulics Bosch Rexroth AG
RE 29158/04.05 (Z)DBE; (Z)DBEE
3/12
Function, section
Symbols (for sandwich plate symbol:
1
= component side,
2
= plate side)
Type DBE 6… Type ZDBE 6 VP…Type DBE 6…Y..
Type DBEE 6… Type ZDBEE 6 VP…Type DBEE 6…Y..
Types DBE and ZDBE
Proportional pressure relief valves of types DBE and ZDBE are
operated by means of a proportional solenoid. These valves are
used to limit a system pressure. With these valves it is possible
to infi nitely adjust the system pressure to be limited in relation
to the electrical command value.
These valves basically consist of a proportional solenoid (1),
housing (2), valve insert (3), spool (4) and pilot poppet (8).
The proportional solenoid proportionally converts the electri-
cal current into a mechanical force. An increase in the current
intensity causes a corresponding rise in the magnetic force.
The solenoid armature chamber is fi lled with hydraulic fl uid and
is pressure-balanced.
The system pressure is adjusted by the proportional solenoid
(1) in relation to the command value. Pressure applied by the
system in port P acts on the right hand side of the spool (4). At
the same time, the system pressure acts via the pilot line (6),
which is fi tted with an orifi ce (5), on the spring-loaded side of
the spool (4).
Via a further orifi ce (7) the system pressure acts on the pilot
poppet (8) against the force of the proportional solenoid (1).
Once the system pressure has reached the pre-set value, the
pilot poppet (8) lifts from its seat. Depending on the model,
pilot oil can now drain externally via port A (Y) or internally
into the tank, which results in a limitation of the pressure on
the spring-loaded side of the spool (4). If the system pressure
continues to rise slightly, then the higher pressure on the right
hand side of the spool pushes the spool to the left into control
position P to T.
At a minimum control current - corresponds to a command
value of zero - the minimum settable pressure will be set.
Note!
To ensure optimim function, the valve must be bled during
commissioning:
– Remove bleed screw (9),
– pour hydraulic fl uid into the open threaded hole, item 9,
– when no more bubbles appear, re-fi t screw, item 9.
– The tank should be prevented from draining. Where installa-
tion conditions allow, a pre-load valve should be installed
(pre-load pressure approx. 2 bar).
Type DBE ...K4...
10
11
4/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE
RE 29158/04.05
Types DBEE …K31… and ZDBEE …K31… – with integrated electronics (OBE)
In terms of function and design, these valves correspond to
types DBE and ZDBE. An additional housing (10) is fi tted on
the proportional solenoid which accommodates the integrated
electronics (OBE). Supply and command value voltages are
connected to the cable socket (11).
Function, section
The command value/pressure characteristic curve (zero point
at the valve insert, see page 3, item 12, and the gradient on the
I
max
potentiometer (R30) in the electronics) is factory pre-set
with minor manufacturing tolerances.
The ramp time for pressure build-up and pressure reduction
can be adjusted independently of each other using two poten-
tiometers.
For further information about the integrated electronics, see
page 7.
Hydraulics Bosch Rexroth AG
RE 29158/04.05
(Z)DBE; (Z)DBEE
5/12
Technical data (for applications outside these parameters, please consult us!)
General
Weight
– DBE and ZDBE kg 2.4
– DBEE and ZDBEE kg 2.5
Installation orientation Optional
Storage temperature range °C – 20 to + 80
Ambient
– DBE and ZDBE °C – 20 to + 70
temperature range
– DBEE and ZDBEE °C – 20 to + 50
Hydraulic (measured with HLP 46;
ϑ
oil
= 40 °C ± 5 °C)
Max. operating pressure
– Port P; P1 – P2
A1 – A2; B1 – B2
bar 315
– Port T bar 50
Max. set pressure
– Pressure stage 50 bar bar 50
– Pressure stage 100 bar bar 100
– Pressure stage 200 bar bar 200
– Pressure stage 315 bar bar 315
Min. set pressure at command value 0 bar See characteristic curve on page 9
Return flow pressure in port A; with external pilot oil drain (Y) Separate at zero pressure to tank
Pilot oil flow L/min 0.6 to 1.2
Max. flow L/min 30
Hydraulic fluid Mineral oil (HL, HLP) to DIN 51524.
Further hydraulic fluids on enquiry!
Hydraulic fluid temperature range °C – 20 to + 80
Viscosity range mm
2
/s 15 to 380
Max. permissible degree of contamination of the hy-
draulic fluid - cleanliness class to ISO 4406 (c)
Class 20/18/15
1)
Hysteresis % ± 1.5 of max. set pressure
Repeatability % < ± 2 of max. set pressure
Linearity % ± 3.5 of max. set pressure
To lerance of the command
– DBE and ZDBE % ± 2.5 of max. set pressure
value/pressure curve, – DBEE and ZDBEE % ± 1.5 of max. set pressure
referred to the hysteresis curve, increasing pressure
Step response T
u
+ T
g
10 % → 90 % ms approx. 80
depends on system
90 % → 10 % ms approx. 50
1)
The cleanliness classes specified for components must be
adhered to in hydraulic systems. Effective filtration prevents
malfunction and, at the same time, increases the service life
of components.
For the selection of filters, see data sheets RE 50070,
RE 50076, RE 50081, RE 50086 and RE 50088.
PE
12
PE
12
Ø6,5…Ø11
Ø27
91
A
F
E
D
C
B
27,5
18
43
10
34,2
5,5
1
2
1
2
10A
250V
GDM
6/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE
RE 29158/04.05
Technical data (for applications outside these parameters, please consult us!)
Electrical
Supply voltage V 24 DC
Min. control current mA 100
Max. control current mA 1600
Coil resistance
– Cold value at 20° C Ω 5.4
– Max. hot value Ω 7. 8
Duty cycle % 100
Electrical connection – DBE and ZDBE
With component plug to DIN EN 175301-803
Cable socket to DIN EN 175301-803
2)
– DBEE and ZDBEE
With component plug to DIN EN 175201-804
Cable socket to DIN EN 175201-804
2)
Type of protection of the valve to EN 60529 IP 65 with cable socket mounted and locked
Control electronics
– For DBEE and ZDBEE Integrated in the valve, see page 7
– For DBE and ZDBE
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 30123
Amplifier of modular design (separate order)
analogue
VT 11131 according to data sheet RE 29865
Electrical connection, cable sockets (nominal dimensions in mm)
For the pin assignment, see block circuit diagram on page 7
For types DBEE and ZDBEE – with integrated electronics (OBE)
Cable socket to DIN EN 175201-804
Separate order: Material no. R900021267 (version made of plastic)
For types DBE and ZDBE – for external control electronics
Cable socket to DIN EN 175301-803
Separate order: Material no. R901017011
Connection to cable socket
to amplifier
Connection to component plug
2)
Separate order, see below
Note: For details regarding environment simulation
testing in the fields of EMC (elec tro ma gne tic compatibility),
climate and mecha nical stress, see RE 29158-U (declaration
on environmental compatibility).
1
Fixing screw M3
Tightening torque M
T
= 0.5 Nm
R 30 R 43
I
max
R 13
+
–
0 V
+U
+7,5 V
-7,5 V
+
R 14
+U
=
=
I
D
E
F
C
B
A
n.c.
I
min
U
U
300 Hz
=
MP1
MP2
n.c.
1,6 A =
0,352 V
22
24
26
28
30
20 40 60 80 100
0,75 mm
2
1 mm
2
Hydraulics Bosch Rexroth AG
RE 29158/04.05
(Z)DBE; (Z)DBEE
7/12
Integrated electronics (OBE) for types DBEE, ZDBEE
Supply voltage
Power supply unit with rectifi er
Single phase rectifi cation or three phase bridge: U
eff
= 22 to 33 V
Residual ripple content at power supply unit: < 5 %
Output current: I
eff
= max. 1.4 A
Supply cable: – Recommended: 5-core 0.75 or 1 mm
2
with PE conductor and shield
– Outside diameter 6.5 to 11 mm
– Shield to 0 V supply voltage
– Max. permissible length 100 m
The minimum supply voltage of the power supply unit depends
on the length of the supply cable (see diagram).
For lengths > 50 m a capacitor of 2200 µF must be installed
near the valve in the supply line.
0V reference po ten ti al
Block circuit diagram / pin assignment of integrated electronics
Function
The integrated electronics is controlled via the two differential
amplifi er connections D and E.
The ramp generator generates from a command value step
change (0 to 10 V or 10 to 0 V) a delayed rise or drop in the
solenoid current. The rise time of the solenoid current can
be adjusted by means of potentiometer R14, the drop time by
means of potentiometer R13.
The maximum ramp time of 5 s is only possible over the entire
command value range. With smaller command value changes
the ramp time shortens accordingly.
The command value/solenoid current characteristic curve is
matched to the valve by the characteristic curve generator, so
that non-linearities in the hydraulics can be compensated for
and hence a linear command value/pressure characteristic
curve is obtained.
The current regulator controls the solenoid current independ-
ently of the solenoid coil resistance.
The gradient of the command value/current characteristic
curve, and hence also the gradient of the command value/
pressure characteristic curve of the proportional pressure valve
may be altered using potentiometer R30.
Potentiometer R43 is used to adjust the biasing current. This
setting should not be altered. If necessary, the zero point of the
command value/pressure characteristic curve can be adjusted
at the valve seat.
The power stage of the electronics for controlling the propor-
tional solenoid is a chopper amplifi er. It is pulse-width-modu-
lated with a clock frequency of 300 Hz.
The solenoid current can be measured at the two measurement
sockets MP1 and MP2. A voltage drop of 0.352 V at the meas-
urement resistor corresponds a to solenoid current of 1.6 A.
Command value 0 to 10 V
Supply voltage:
U
eff
: 22 to 33 V
Chopper
amplifier
Ramp
"up"
Ramp
"down"
Internal reference point
Measuring resis-
tor R=0.22 Ω
Oscillator
Solenoid
Power supply unit
Ramp
generator
Differential
amplifier
Char. curve
generator
Current
regulator
0 V
Length of supply cable in m →
Min. supply voltage in V →
60
50
40
30
20
10
01020304050607080
90
100
120
100
80
60
40
20
01020304050607080
90
100
300
250
200
150
100
50
01020304050607080
90
100
350
240
200
160
120
80
40
01020304050607080
90
100
60
50
40
30
20
10
51015202530
0
125
100
75
50
25
51015202530
0
250
200
150
100
50
51015202530
0
300
350
400
250
200
150
100
50
51015202530
0
8/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE
RE 29158/04.05
Characteristic curves (measured with HLP 46; ϑ
oil
= 40 °C ± 5 °C )
Pressure in P or P2 in bar →
Command value in % →
Pressure stage 50 bar Pressure stage 100 bar
Pressure stage 200 bar
Pressure stage 315 bar
Pressure in P or P2 in bar →
Pressure in P or P2 in bar →
Pressure in port P or P2 in dependence upon the command value (q
V
= 5 L/min)
Pressure stage 50 bar (external and internal)
The characteristic curves were measured without backpressure in port A (external pilot oil drain) and T (internal pilot oil drain).
With internal pilot oil drain the pressure in P or P2 increases by the output pressure present in port T.
Flow in L/min →
Flow in L/min →
Flow in L/min →
Pressure in P or P2 in bar →
Command value in % →
Pressure in P or P2 in bar →
Command value in % →
Pressure in P or P2 in bar →
Command value in % →
Pressure stage 200 bar (external and internal)
Pressure stage 315 bar (external and internal)
Pressure in P or P2 in bar →
Pressure in P or P2 in bar →
Flow in L/min →
Pressure stage 100 bar (external and internal)
30
4
6
8
10
12
14
2
0
510152025
4
6
8
10
12
14
0
51015202530
2
1
2
3
4
5
0
51015202530
1
2
3
4
5
0
51015202530
1
2
3
4
5
0
51015202530
0
51015202530
4
6
8
10
12
14
2
4
6
8
10
12
14
0
51015202530
2
Hydraulics Bosch Rexroth AG
RE 29158/04.05
(Z)DBE; (Z)DBEE
9/12
Pressure stage 50 bar Pressure stage 100 bar
Pressure stage 200 bar Pressure stage 315 bar
Min. set pressure in port P or P2 at command value 0.
Min. set pressure in bar →
Min. set pressure in bar →
Flow in L/min → Flow in L/min →
Flow in L/min → Flow in L/min →
Min. set pressure in bar →
Min. set pressure in bar →
The characteristic curves were measured without backpressure in port A (external pilot oil drain) and T (internal pilot oil drain).
With internal pilot oil drain the pressure in P or P2 increases by the output pressure present in port T.
Flow in L/min → Flow in L/min →
Pressure differential in bar →
Pressure differential P1 → P2
Pressure differential T1 → T2
Pressure differential A1 → A2 and B1 → B2
Pressure differential in bar →
Flow in L/min →
Pressure differential in bar →
Characteristic curves (measured with HLP 46; ϑ
oil
= 40 °C ± 5 °C )
Pilot oil drain –––––– internal – – – external
204,9
Ø 12,2
+0,1
Ø 10
Ø 5,5
15
87
50
42
1,3
+0,1
45
A B
P
133,5
199,6
43,5
99,4
T
271
2
3
1
45
6
78
9
(71,4)
45
A
B
T
P
103
47
8
F4
F1
F3
F2
10
G
0,01/100mm
Rzmax 4
10/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE
RE 29158/04.05
Unit dimensions: Types DBE and DBEE (nominal dimensions in mm)
Subplates to data sheet RE 45052 and valve fixing screws
must be ordered separately.
Subplates: G 341/01 (G 1/4)
G 342/01 (G 3/8)
G 502/01 (G 1/2)
Valve fixing screws:
4 socket head cap screws M5 x 50 DIN 912 10.9
Tightening torque M
T
= 7 Nm
Required
surface quality
of the mating part
1
Valve housing
2
Proportional solenoid
3
Nameplate
4
Identical seal rings for ports A, B, P and T
5
With version Y, pilot oil drain external via port A (Y)
6
Cable socket for type DBE
(separate order, see page 6)
7
Cable socket for type DBEE
(separate order, see page 6)
8
Space required to remove cable socket
9
Integrated electronics (OBE)
10
Machined mounting face, position of ports to
DIN 24340 (without locating bore) and
ISO 4401
(with locating bore)
(with integrated electronics)
Tolerances to: – General tolerances ISO 2768-mK
– Tolerancing principle ISO 8015
204,9
Ø 5,5
87
50
45
"3"
"2"
"1"
"4"
62
62
(174,4)
99,4
T
B
P
A
15
271
21410
6
7
8
9
(240,5)30,5
3
F1 F2
F4 F3
11
0,01/100mm
Rzmax 4
Hydraulics Bosch Rexroth AG
RE 29158/04.05
(Z)DBE; (Z)DBEE
11/12
Unit dimensions: Types ZDBE and ZDBEE (nominal dimensions in mm)
Subplates to data sheet RE 45052 and valve fixing screws
must be ordered separately.
Subplates: G 341/01 (G 1/4)
G 342/01 (G 3/8)
G 502/01 (G 1/2)
Valve fixing screws:
4 socket head cap screws M5 DIN 912 10.9
Tightening torque M
T
= 7 Nm
Required
surface quality
of the mating part
1
Valve housing
2
Proportional solenoid
3
Nameplate
4
Identical seal rings for ports A, B, P and T
6
Cable socket for type ZDBE
(separate order, see page 6)
7
Cable socket for type ZDBEE
(separate order, see page 6)
8
Space required to remove cable socket
9
Integrated electronics (OBE)
10
Machined mounting face, position of ports
nach DIN 24340 (without locating bore) and
ISO 4401
(with locating bore)
(with integrated electronics)
"1" to "4" – position of cable socket or housing with integrated electronics (see ordering code)
Tolerances to: – General tolerances ISO 2768-mK
– Tolerancing principle ISO 8015
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, specifi cations and other
information set forth in it, are the exclusive property of Bosch Rexroth
AG. Without their consent it may not be reproduced or given to third
parties.
The data specifi ed 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
verifi cation. It must be remembered that our products are subject to a
natural process of wear and aging.
12/12 Bosch Rexroth AG Hydraulics
(Z)DBE; (Z)DBEE RE 29158/04.05
Notes
