RE 29156/07.
05 1/10
Proportional pressure relief valve,
pilot operated
Type DBE6X
Nominal size 6
Unit series 1X
Maximum working pressure P 315 bar, T 250 bar
Maximum flow rate 40 l/min
List of contents Features
Contents Page – Pilot operated valves (pilot valves) for limiting system pressure
Features 1 (pilot oil internal only)
Ordering data 2 – Adjustable by means of the solenoid current, see Characteris-
tic curve, Technical data and selected valve electronics
Preferred types, symbol 2
– Solenoid versions Imax = 0.8 A or Imax = 2.5 A
Function, sectional diagram 3
– Pressure limitation to a safe level even with faulty electronics
Technical data 4
(solenoid current I > Imax)
External trigger electronics 5 to 7
– For subplate attachment, mounting hole configuration
Characteristic curves 8 to ISO 4401-03-02-0-94
Unit dimensions 9 Subplates as per catalog sheet RE 45053 (order separately)
– Plug-in connector to DIN 43650-AM2 included in scope of
delivery
– External trigger electronics with ramps and valve calibration in
the following versions/designs (order separately)
• Plug, setpoint 0...+10 V or 4...20 mA, RE 30264
• Module, setpoint 0...+10 V, RE 30222
• Europe card, setpoint 0...+10 V, RE 30109
2/10 Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Ordering data
DBE6 X 1X G24 N Z4 M *
Proportional pressure relief valve Further information
NG6, pilot operated in plain text
Mounting hole configuration =X M= NBR seals,
to ISO 4401-03-02-0-94 suitable for mineral oils (HL, HLP)
Unit series 10 to 19 = 1X to DIN 51524
(10 to 19: installation and connection Z4 = Electrical connection
dimensions unchanged) Unit plug to DIN 43650-AM2
Max. pressure stage Plug-in connector included in scope of delivery
up to 80 bar = 800 N= Manual auxiliary override
up to 180 bar = 180 Solenoid type (current)
up to 315 bar = 315 8= Solenoid current 0.8 A max.
Voltage supply of trigger electronics = G24 25 = Solenoid current 2.5 A max.
24 V DC
Preferred types
Solenoid 0.8 A Solenoid 2.5 A
Type Material Number Type Material Number
DBE6X–1X/80G24–8NZ4M 0 811 402 045 DBE6X–1X/80G24–25NZ4M 0 811 402 040
DBE6X–1X/180G24–8NZ4M 0 811 402 044 DBE6X–1X/180G24–25NZ4M 0 811 402 041
DBE6X–1X/315G24–8NZ4M 0 811 402 043 DBE6X–1X/315G24–25NZ4M 0 811 402 042
Symbol
For external trigger electronics
T
RE 29156/07.05 DBE6X Hydraulics Bosch Rexroth AG 3/10
Function, sectional diagram
General Basic principle
Type DBE6X proportional pressure relief valves are pilot opera- To adjust the system pressure, a setpoint is set in the trigger
ted pressure relief valves. electronics. Based on this setpoint, the electronics control the
The internal pilot stage in the conical seat version and the main solenoid coil with regulated PWM (pulse-width-modulated)
stage in the spool version are located in the valve body. current.
The valves are actuated by means of a proportional solenoid. The regulated current is additionally modulated with a dither,
The solenoid is cushioned by restrictors in the armature to aid ensuring low hysteresis.
dynamic stability. The interior of the solenoid is connected to The proportional solenoid converts the current to a mechanical
port T and is filled with pressure fluid. Bleeding is achieved by force, which acts on a main spring in the pilot stage by means
means of a screw plug. of the armature plunger. The pilot stage is supplied with pilot oil
With these valves, the system pressure that needs to be limited via a bore at < 0.6 l/min.
can be infinitely adjusted in relation to the solenoid current. The “pmax” pressure stage is determined by the cone and
seating bore configuration.
Pressure limitation for maximum safety
If a fault occurs in the electronics, so that the solenoid current
(Imax) would exceed its specified level in an uncontrolled
manner, the pressure cannot rise above the level determined by
the maximum spring force.
Plug-in connector
Bleeder plug
Valve body
Solenoid
Accessories
Type Material Number
(4 x) f ISO 4762-M5x30-10.9 Cheese-head bolts 2 910 151 166
Plug VT-SSPA1-525-20/V0 (2.5 A) RE 30264 0 811 405 143
VT-SSPA1-508-20/V0 (0.8 A) 0 811 405 144
VT-SSPA1-525-20/V0/I (2.5 A) 0 811 405 145
VT-SSPA1-508-20/V0/I (0.8 A) 0 811 405 162
Module VT-MSPA1-525-10/V0 (2.5 A) RE 30222 0 811 405 127
VT-MSPA1-508-10/V0 (0.8 A) 0 811 405 126
Europe card VT-VSPA1-525-10/V0/RTP (2.5 A) RE 30109 0 811 405 079
VT-VSPA1-508-10/V0/RTP (0.8 A) 0 811 405 081
Plug-in connector Plug-in connector 2P+PE (M16x1.5)
included in scope of delivery, see also RE 08008.
2P+PE
Testing and service equipment
Test box type VT-PE-TB1, see RE 30063
Current measuring adapter type VT-PA-5, see RE 30073
4/10 Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Technical data
General
Construction Pilot stage Poppet valve
Main stage Spool valve
Actuation Proportional solenoid without position control, external amplifier
Connection type Subplate, mounting hole configuration NG6 (ISO 4401-03-02-0-94)
Mounting position Optional
Ambient temperature range °C –20...+50
Weight kg 2.2
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 mm2/s 20...100
max. permitted mm2/s 10...800
Pressure fluid temperature range °C –20...+80
Maximum permitted degree Class 18/16/13 1)
of contamination of pressure fluid
Purity class to ISO 4406 (c)
Direction of flow See symbol
Max. set pressure (at Q = 1 l/min) bar 80 180 315
Minimum pressure (at Qmin = 1 l/min) bar 7 8 10
Max. mechanical pressure limitation bar < 90 < 190 < 325
level, e.g. when solenoid current I ⬎ Imax
Max. working pressure bar Port P: 315
Max. pressure bar Port T: 250
Pilot oil flow l/min approx. 0.6
Max. flow l/min 40
Electrical
Cyclic duration factor % 100
Degree of protection IP 65 to DIN 40050 and IEC 14434/5
Solenoid connection Unit plug DIN 43650/ISO 4400, M16 x 1.5 (2P+PE)
Valve with solenoid type 0.8 A 2.5 A
Max. solenoid current Imax 0.8 A 2.5 A
Coil resistance R20 ⍀ 22 3
Max. power consumption at 100 % VA 25 30
load and operating temperature
Static/Dynamic 2)
Hysteresis % ⱕ4
Range of inversion % ⱕ3
Manufacturing tolerance for pmax % ⱕ 10
Response time 100 % signal change ms On 200 / Off ⬍ 250
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.
2) All characteristic values ascertained using amplifier 0 811 405 079 for the 2.5 A solenoid and
0 811 405 081 for the 0.8 A solenoid.
RE 29156/07.05 DBE6X Hydraulics Bosch Rexroth AG 5/10
Valve with external trigger electronics (plug, RE 30264)
Circuit diagram/pin assignment
1) Version with 0...+10 V signal
2) Version with 4...20 mA signal
Connection/calibration
P1 – Ramp time
P2 – Sensitivity
P3 – Zero
P4 – Dither frequency
St1 – Terminal
LED –UB display
6/10 Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Valve with external trigger electronics (module, RE 30222)
Circuit diagram/pin assignment
Front view/calibration
RE 29156/07.05 DBE6X Hydraulics Bosch Rexroth AG 7/10
Valve with external trigger electronics (europe card, RE 30109)
Circuit diagram/pin assignment
8/10 Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Characteristic curves (measured with HLP 46, oil = 40 °C ±5 °C)
Pressure in port P as a function of the setpoint
Valve amplifier
1) Zero adjustment
2) Sensitivity adjustment
3) Version: UE = 0...+10 V
4) Version: IE = 4...20 mA
UE 3)
[V]
4 IE 4)
[mA]
4,4 7,5 10,6 13,8 16,9 20
Pressure in port P proportionate to the
maximum flow of the main stage
Set pressure
p⬘ = f (QP–T)
T
RE 29156/07.05 DBE6X Hydraulics Bosch Rexroth AG 9/10
Unit dimensions (nominal dimensions in mm)
A,B: sealed
Bleeder plug
Required surface quality
of mating component
Mounting hole configuration: NG6 (ISO 4401-03-02-0-94)
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
P A T B F1 F2 F3 F4
X 21.5 12.5 21.5 30.2 0 40.5 40.5 0
Y 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)
10/10 Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Notes
Bosch Rexroth AG © This document, as well as the data, specifications and other information
Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
Zum Eisengießer 1 reproduced or given to third parties without its consent.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state-
Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application
Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release
documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be
www.boschrexroth.de remembered that our products are subject to a natural process of wear and
aging.
RE 29156/07.05 DBE6X Hydraulics Bosch Rexroth AG
Notes
Bosch Rexroth AG © This document, as well as the data, specifications and other information
Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
Zum Eisengießer 1 reproduced or given to third parties without its consent.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state-
Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application
Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release
documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be
www.boschrexroth.de remembered that our products are subject to a natural process of wear and
aging.
Bosch Rexroth AG Hydraulics DBE6X RE 29156/07.05
Notes
Bosch Rexroth AG © This document, as well as the data, specifications and other information
Hydraulics set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
Zum Eisengießer 1 reproduced or given to third parties without its consent.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No state-
Telefon +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain application
Telefax +49 (0) 93 52 / 18-23 58 can be derived from our information. The information given does not release
documentation@boschrexroth.de the user from the obligation of own judgement and verification. It must be
www.boschrexroth.de remembered that our products are subject to a natural process of wear and
aging.
