roportional pressure reducing valve, 3-way variant, pilot operated RE 29286/1.1 Replaces: 2.8 1/14 ypes 3DRE(M) and 3DRE(M)E Sizes 1 and 16 Component series 7X Maximum pressure setting 315 bar (size 1) 25 bar (size 16) Maximum flow 125 l/min (size 1) 3 l/min (size 16) B21 able of contents Content age Features 1 Ordering code 2 Symbols 2 Function, section 3 echnical data 4 and 5 Electrical connection, mating connectors 6 Integrated electronics (OBE) with type 3DRE(M)E 7 Characteristic curves 8 and 9 Unit dimensions of size 1 1 Unit dimensions of size 16 11 ilot oil supply 12 Features ilot operated valve for reducing a pressure ( to ) and limiting a system pressure ( to ) ctuation by proportional solenoid roportional solenoid with central thread and detachable coil For subplate mounting: orting pattern to DIN 2434- and ISO 441 Maximum pressure relief function optionally Valve and control electronics from a single source External control electronics for type 3DRE(M) Linear command value/pressure characteristic curve Integrated electronics (OBE) for type 3DRE(M)E with low manufacturing tolerance of the command value/pressure characteristic curve Information on available spare parts: www.boschrexroth.com/spc
2/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Ordering code 3DRE 7X G24 V * Without maximum pressure relief function = No code With maximum pressure relief function = M For external electronics = No code With integrated electronics (OBE) = E Size 1 = 1 Size 16 = 16 Subplate mounting = Component series 7 to 79 = 7X (7 to 79: unchanged installation and connection dimensions) ressure rating 5 bar = 5 1 bar = 1 2 bar = 2 25 bar (size 16 only) = 25 315 bar (size 1 only) = 315 ilot oil supply/drain Internal pilot oil supply, external pilot oil drain = Y External pilot oil supply, external pilot oil drain = XY G24 = K4 = K31 = V = Further details in clear text Seal material FKM seals Interface to electronics 1 = Command value to 1 V F1 = Command value 4 to 2 m No code = For 3DRE Electrical connection for 3DRE, 3DREM: Without mating connectors, with component plug to DIN EN 17531-83 for 3DREE, 3DREME Without mating connector, with component plug to DIN EN 17521-84 Supply voltage of control electronics DC voltage 24 V ccessories (not included in scope of supply) Subplates size 1 to data sheet RE 4554 G 535/1 (G3/4), Material no. R947661 G 536/1 (G1), Material no. R947659 Subplates size 16 to data sheet RE 4556 G 172/1 (G3/4), Material no. R942441 G 172/2 (M27 x 2), Material no. R9424411 G 174/1 (G1), Material no. R9424413 G 174/2 (M33 x 2), Material no. R9424414 G 174/8 (flange), Material no. R9429264 External control for type 3DRE: nalog amplifier V-MS1-11-1X/V/ of modular design to data sheet RE 3223 Digital amplifier V-VSD-1-2X/V/.--1 of Euro-card format to data sheet RE 3523 nalog amplifier V-VS1-11-1X/V/ of Euro-card format to data sheet RE 31 Mating connectors (for details, see page 8) For 3DRE: according to DIN EN 17531-83, Material no. R911711 For 3DREE: according to DIN EN 17521-84, Material no. R921267 or R922389
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 3/14 Symbols Internal pilot oil supply External pilot oil drain External pilot oil supply External pilot oil drain 3DRE Y 3DREM Y 3DRE XY 3DREM XY Y Y X Y X Y 3DREE Y 3DREME Y 3DREE XY 3DREME XY Y Y X Y X Y
4/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Function, section Valves of types 3DRE(M) and 3DRE(M)E are electrically pilot operated 3-way pressure reducing valves with actuator pressure relief function. hey are used to reduce a system pressure. echnical structure he valve consists of three main groups: ilot valve (1), optionally with maximum pressure relief valve (15) roportional solenoid (2) Main valve (3) with main spool (4) Function General function: Command value-related adjustment of the pressure to be reduced in port by means of proportional solenoid (2). When no pressure is applied in port, main spool (4) is held in the central position by springs (5) and (6). In this case, the connections from to and to are blocked. ilot oil flows from bore (7) via flow controller (8), via pilot valve (1) to throttling gap (9), via line (1) to port Y. his connection must be directed to the tank at zero pressure. ressure reduction: Build-up of the pilot pressure in control chamber (11) as a function of the command value. Via orifice (12), pressure is built up in spring chamber (13), and main spool (4) is pushed to the right. Hydraulic fluid flows from to. he actuator pressure in port is present in spring chamber (14). 1 When the pressure in port increases to the value set on pilot valve (1), main 11 spool (4) is pushed to the left. he pressure in port is approximately the same as the pressure set on pilot valve (1). 8 ressure relief function: When the pressure in port exceeds 12 the pressure set on pilot valve (1), main 7 spool (4) is pushed further to the left. 5 his causes the connection from to to open and the pressure applied in port to be limited to the setpoint value. ype 3DREM Optionally, the valve is available with an additional, springloaded pilot valve (15) for maximum pressure relief. ypes 3DREE and 3DREME with integrated electronics (OBE) In terms of function and design, these valves correspond to types 3DRE and 3DREM, except for the integrated electronics. he electronics accommodated in housing (16) receives its supply and command value voltage via mating connector (17). he command value/pressure characteristic curve is adjusted in the factory with very low tolerances. For further details about the integrated electronics, see page 7. 15 9 2 1 16 17 6 14 13 3 X Y 4
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 5/14 echnical data (for applications outside these parameters, please consult us!) General Size Size 1 16 Weight 3DRE and 3DREM kg 7.5 1.3 Installation orientation 3DREE and 3DREME kg 7.6 1.4 Optionally, preferably horizontal Storage temperature range C 2 to +8 mbient temperature 3DRE and 3DREM C 2 to +7 range 3DREE and 3DREME C 2 to +5 Hydraulic (measured with HL46, ϑ oil = 4 C ± 5 C) Size Size 1 16 Maximum operating orts and X bar 35 315 pressure orts and bar 315 25 ort Y Separately and at zero pressure to tank Maximum set pressure ressure rating 5 bar bar 5 5 in channel ressure rating 1 bar bar 1 1 ressure rating 2 bar bar 2 2 ressure rating 25 bar bar 25 ressure rating 315 bar bar 315 Min. set pressure in channel without flow, at zero command value; see Characteristic curves on page 8 bar < 5 < 4 Maximum pressure relief function (steplessly adjustable) ressure adjustment range: Factory-set: ressure rating 5 bar bar 3 to 7 to 7 bar ressure rating 1 bar bar 5 to 13 to 13 bar ressure rating 2 bar bar 9 to 23 to 23 bar ressure rating 315 bar (size 16 only) bar 13 to 27 to 27 bar ressure rating 315 bar (size 1 only) bar 15 to 35 to 35 bar ermissible max. flow l/min 125 3 ilot flow l/min 1,1 Hydraulic fluid Mineral oil (HL, HL) to DIN 51524, further hydraulic fluids on request! Hydraulic fluid temperature range C 2 to +8 Viscosity range mm 2 /s 15 to 38 ermissible max. degree of contamination of the hydraulic fluid - cleanliness class to ISO 446 (c) Class 2/18/15 1) Hysteresis % ± 3 of set max. pressure Repeatability % < ± 2 of set max. pressure Linearity % ± 3.5 of set max. pressure 1) he cleanliness classes specified for components must be adhered to in hydraulic systems. Effective filtration prevents malfunction and, at the same time, prolongs the service life of components. For the selection of filters, see data sheets RE 57, RE 576, RE 581, RE 586 and RE 588.
6/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 echnical data (for applications outside these parameters, please consult us!) Hydraulic (continued) Manufacturing tolerance of command value/pressure characteristic curve, referred to hysteresis characteristic curve 1) Matched in the factory 2) For details, see page1 3DRE(M) 1) 3DRE(M)E 1) 3DRE(M) 2) 3DRE(M)E 1) at 2% command value at 1% command value < ±1.5% of set max. pressure < ±5% of set max. pressure < ±1.5% of set max. pressure Switching time/step response Command value: - 9 % and dead volume in : 1 l u + g ms < 14 Electrical Minimum solenoid current m 1 Maximum solenoid current m 16 ± 1 % Solenoid coil resistance Cold value at 2 C Ω 5.5 Max. warm value Ω 8.5 Duty cycle % 1 Electrical, integrated electronics (OBE) Supply voltage Nominal voltage VDC 24 Lower limit value VDC 21 Upper limit value VDC 35 Current consumption 1.5 Required fuses 2, slow-blowing Inputs Voltage V to 1 Current m 4 to 2 Output ctual current value mv 1 mv 1m ype of protection of the valve to EN 6529 I 65 with mating connector mounted and locked
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 7/14 Electrical connection (dimensions in mm) 3DRE(M) Connection to component plug Connection to mating connector o the amplifier Mating connector (black) to DIN EN 17531-83 Material no. R911711 (separate order) Seal material NBR 3DRE(M)E Component plug pinout Contact inout of interface 1 inout of interface F1 Supply voltage 24 VDC (u(t) = 21 V to 35 V); / max 1.5 B ctual value reference potential C Reference contact F; V Reference contact F; V Differential amplifier input D to 1 V; R I = 1 kω 4 to 2 m; R I = 1 Ω Measurement output (actual value) E F E Mating connectors to DIN EN 17521-84, soldered contacts for cable cross-section.5 to 1.5 mm 2 V Command value reference potential to 1.6 V actual value (1 mv 1 m) Load resistance > 1 kω Connected to solenoid and valve housing lastic variant, Material no. R921267, (separate order) Metal variant, Material no. R922389 separate order
8/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Electrical connection Connection cable for 3DREE Recommendation: 6-wire,.75 or 1 mm 2 plus protective earth conductor and shield Connect shield to E on the supply side only ermissible max. length 1 m he minimum supply voltage at the power supply unit depends on the length of the supply cable (see diagram). Min. supply voltage in V Length in m Integrated electronics (OBE) for type 3DRE(M)E Function he electronics is supplied with voltage via connections and B. he command value is applied to differential amplifier connections D and E. he characteristic curve generator adapts the command value/solenoid current characteristic curve to the valve so that non-linearities in the hydraulics are compensated for and a linear command value/pressure characteristic curve is obtained. he current regulator regulates the solenoid current independently of the solenoid coil resistance. chopper amplifier with a clock frequency of approx. 18 Hz to 4 Hz forms the power stage of the electronics for activating the proportional solenoid. he output signal is pulsewidth-modulated (WM). For checking the solenoid current, a voltage can be measured between in F(+) and in C( ), which is proportional to the solenoid current. 1 mv corresponds to a solenoid current of 1 m. Block circuit diagram 24 VDC supply GND B DC DC Reference potential actual value Command value C D Differential amplifier U Characteristic curve generator Current regulator Chopper amplifier Solenoid Reference potential command value E U ctual value F E U U = Oscillator
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 9/14 Characteristic curves (measured with HL46, ϑ oil = 4 C ± 5 C) ressure in port in dependence upon the command value (manufacturing tolerance) without flow ressure in port in % 3DRE(M) 1 8 6 4 2 2 4 6 8 1 1) 1) For valve 3DRE(M) the manufacturing tolerance of the external amplifier (for type and data sheet, see page 2) can be modified with command value attenuator potentiometer Gw. he digital amplifier is set with the parameter Limit. he control current according to the technical data must, however, not be exceeded. In order that several valves can be matched to the same characteristic curve, do not set the pressure higher than the maximum pressure setting of the relevant pressure rating at a command value of 1 %. ressure in port in dependence upon the command value (at flow l/min) 7 Size 1, pressure rating 5 bar Size 1, pressure rating 1 bar 6 125 ressure in port in bar 5 4 3 2 1 ressure in port in bar 1 75 5 25 2 4 6 8 1 2 4 6 8 1 Size 1, pressure rating 2 bar 25 Size 1, pressure rating 315 bar 35 ressure in port in bar 2 15 1 5 ressure in port in bar 3 25 2 15 1 5 2 4 6 8 1 2 4 6 8 1
1/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Characteristic curves (measured with HL46, ϑ oil = 4 C ± 5 C) ressure in port in dependence upon the command value (at flow l/min) 7 Size 16, pressure rating 5 bar Size 16, pressure rating 1 bar 6 125 ressure in port in bar 5 4 3 2 1 ressure in port in bar 1 75 5 25 2 4 6 8 1 2 4 6 8 1 25 Size 16, pressure rating 2 bar Size 16, pressure rating 25 bar 25 ressure in port in bar 2 15 1 5 ressure in port in bar 2 15 1 5 2 4 6 8 1 2 4 6 8 1
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 11/14 Characteristic curves (measured with HL46, ϑ oil = 4 C ± 5 C) ressure differential in dependence upon the flow ressure differential in bar Size 1 Size 16 4 3 35 3 25 2 15 1 5 25 5 75 1 125 Flow in l/min ressure differential in bar 2 1 5 1 15 2 25 3 Flow in l/min ressure in port in dependence upon the flow ressure in port in bar Size 1 3 25 2 15 1 5 315 bar 1) 2 bar 1) 1 bar 1) 5 bar 1) 125 1 75 5 25 25 5 75 1 125 Flow in l/min 1) ressure rating ressure in port in bar 3 25 2 15 1 5 3 Size 16 25 bar 1) 2 bar 1) 1 bar 1) 5 bar 1) 2 1 1 2 3 1) ressure rating Flow in l/min Min. set pressure in dependence upon the flow at zero command value ressure in port in bar 4 3 2 1 Size 1 Size 16 4 125 1 75 5 25 25 4 Flow in l/min ressure in port in bar 3 2 1 3 25 2 15 1 5 5 8 Flow in l/min
12/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Unit dimensions of size 1 (dimensions in mm) 4 5 12 13 14 4 15 216 195,5 23 15 156 87 For section, see page 14 7 5 35 25 25 6 31 B 25,5 a a Ø1,8 Ø6,6 15 8 7 54 11,5 3 2 1 146,5 149,5 219,5 (lastic mating connector) 213,5 (Metal mating connector) 11 9,1/1 Rzmax 4 1 Main valve 2 ilot valve 3 roportional solenoid 4 Space required to remove mating connector 5 Maximum pressure relief function (type 3DREM ) 6 Nameplate 7 Identical seal rings for ports, B,, and B 8 Identical seal rings for ports X and Y 13,5 1 27 X F4 F1 18 B Y B F2 F3 73 Required surface quality of valve mounting face 9 Machined mounting surface, porting pattern to DIN 2434-1 and ISO 441-5-5--5 1 In the case of internal pilot oil supply (variant Y), port X must be plugged in the subplate. 11 ort B must be plugged in the subplate 12 Mating connector for type 3DRE(M) (separate order) 13 Integrated electronics (type 3DREE, 3DREME) with component plug 1 4 Mating connector for type 3DRE(M)E, plastic or metal variant (separate order) Valve mounting screws 4 hexagon socket head cap screws ISO 4762-M6x45-1.9-flZn-24h-L (Friction coefficient µ total =.9 to.14); tightening torque M = 12.5 Nm ± 1 % or 4 hexagon socket head cap screws ISO 4762-M6x45-1.9 (Friction coefficient µ total =.12 to.17); tightening torque M = 15.5 Nm ± 1 %
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 13/14 Unit dimensions of size 16 (dimensions in mm) 4 5 12 13 14 4 15 225 24,5 165 23 15 96 For section, see page 14 34 1,6 52,5 27 6 Ø11 Ø6,6 7 8 34,1 B Y a a 43 154 179,5 249,5 (lastic mating connector) 243,5 (Metal mating connector) 3 2 1 29 1 Main valve 2 ilot valve 3 roportional solenoid 4 Space required to remove mating connector 5 Maximum pressure relief function (type 3DREM ) 6 Nameplate 7 Identical seal rings for ports, B, and 8 Identical seal rings for ports X and Y 9 1 X 12 F1 F5 G1 F2 92,4 71,5 69,9 35 L B X Y 94 5 B Y 11,6,1/1 Rzmax 4 Required surface quality of valve mounting face F4 G2 11 158 F6 F3 9 Machined mounting surface, porting pattern to DIN 2434-16 and ISO 441-5-7--5 1 In the case of internal pilot oil supply (variant Y), port X must be plugged in the subplate. 11 orts B and L must be plugged in the subplate) 12 Mating connector for type 3DRE(M) (separate order) 13 Integrated electronics (types 3DREE, 3DREME) with component plug 1 4 Mating connector for type 3DRE(M)E, plastic or metal variant (separate order) Valve mounting screws 2 hexagon socket head cap screws ISO 4762-M6x6-1.9-flZn-24h-L (Friction coefficient μ total =.9 to.14) tightening torque M = 12.2 Nm ± 1% Material no. R913115 4 hexagon socket head cap screws ISO 4762-M1x6-1.9-flZn-24h-L (Friction coefficient μ total =.9 to.14) tightening torque M = 59 Nm ± 1% Material no. R913116 or 2 hexagon socket head cap screws ISO 4762-M6x6-1.9 (Friction coefficient μ total =.12 to.17) tightening torque M = 15.5 Nm ± 1% 4 hexagon socket head cap screws ISO 4762-M1x6-1.9 (Friction coefficient μ total =.12 to.17) tightening torque M = 75 Nm ± 1%
14/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 ilot oil supply ype 3DRE - / XY external pilot oil supply external pilot oil drain With this variant, the pilot oil is supplied from a separate pilot circuit (external). he pilot oil drain is not directed to the channel of the main valve, but sepately to the tank via port Y (external). ype 3DRE - / Y internal pilot oil supply external pilot oil drain With this variant, the pilot oil is supplied from the channel of the main valve (internal). he pilot oil drain is not directed to the channel of the main valve, but sepately to the tank via port Y (external). ort X must be plugged in the subplate. Item 1: lug screw M6 DIN 96-8.8 3/F Size 1 For the complete section, see page 12 Section a a Size 16 For the complete section, see page 13 Section a a Main valve 1 X Y Main valve X 1 Cover ilot oil supply (section a a) ilot oil drain external: 1 closed internal: 1 open external ilot oil supply (section a a) ilot oil drain external: 1 closed internal: 1 open external Bosch Rexroth G Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany hone +49 () 93 52 / 18- Fax +49 () 93 52 / 18-23 58 documentation@boschrexroth.de www.boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth G. It may not be reproduced or given to third parties without its consent. he 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. he 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.
RE 29286/1.1 3DRE(M); 3DRE(M)E Hydraulics Bosch Rexroth G 15/14 Notes Bosch Rexroth G Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany hone +49 () 93 52 / 18- Fax +49 () 93 52 / 18-23 58 documentation@boschrexroth.de www.boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth G. It may not be reproduced or given to third parties without its consent. he 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. he 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.
16/14 Bosch Rexroth G Hydraulics 3DRE(M); 3DRE(M)E RE 29286/1.1 Notes Bosch Rexroth G Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany hone +49 () 93 52 / 18- Fax +49 () 93 52 / 18-23 58 documentation@boschrexroth.de www.boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth G. It may not be reproduced or given to third parties without its consent. he 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. he 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.