Proportional pressure relief valve direct operated, without/with integral control electronics (OBE)

Transcription

1 roportional pressure relief valve direct operated, without/with integral control electronics (OBE) RE 96/05.06 Replaces: 0.05 / ypes DBE and DBEE Nominal size 6 Component series 6X Maximum operating pressure 0 bar Maximum flow l/min HAD/685 ype DBE-6X/.. HAD/70 ype DBEE-6X/.. Overview of contents Inhalt Seite Features Ordering details referred types, symbols Function, section 3 echnical data and 5 Electrical connections, plug-in connectors 6 Integrated control electronics (OBE) for type DBEE 7 Characteristic curves 8 and 0 Unit dimensions, type DBE Unit dimensions, type DBEE Information on available spare parts: Features Direct operated valve for limiting a system pressure Operated via a proportional solenoid roportional solenoid with central thread and removable coil For subplate mounting: orting pattern to ISO subplates to catalogue sheet RE 505, (separate order, see pages and ) Integrated control electronics (OBE) for type DBEE: Low example spread of the command value-pressurecharacteristic curve CE: For the type DBEE with integrated control electronics the EMC directive 89/336/EG is complied with EN : he compliance of the identified products with the specifications of the stated directive can be proven by fully complying with the stated standards (see page 5 Environmental simulation test ). External control electronics for type DBE (separate order, see page 5) Analogue amplifier in Eurocard format and modular design Independent up and down ramps Fine calibration of the command value-pressure-characteristic curve is possible externally on the control electronics

2 / Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 Ordering details DBE 6X G * roportional pressure relief valve For external control electronics = No code With integrated electronics (OBE) = E Component series 60 to 69 = 6X (60 to 69: unchanged installation and connection dimensions) Max. pressure stage Up to 50 bar = 50 Up to 00 bar = 00 Up to 00 bar = 00 Up to 35 bar = 35 Up to 350 bar = 350 Up to 0 bar = 0 ilot oil drain internal = No code ilot oil drain external = Y Control electronics supply voltage V DC Other types of protection on request! = G Further details in clear text Seal material V = FKM seals, suitable for mineral oil (HL, HL) to DIN 55 Electronic interfacs A or F for the DBEE: A = Command value input 0 to 0 VDC F = Command value input to 0 ma No code = for the DBE Electrical connections for the DBE: K = Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 K3 = for the DBEE: Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 referred types ype DBE-6X/50GKV DBE-6X/00GKV DBE-6X/00GKV DBE-6X/35GKV DBE-6X/350GKV ype DBE Material No. R R R R R ype DBEE ype Material No. DBEE-6X/50GK3AV R DBEE-6X/00GK3AV R DBEE-6X/00GK3AV R DBEE-6X/35GK3AV R DBEE-6X/350GK3AV R Symbols For external control electronics (type DBE) ilot oil drain internal With integrated control electronics (type DBEE) ilot oil drain internal ilot oil drain external (Y) ilot oil drain external (Y) Y Y

3 RE 96/05.06 DBE; DBEE Hydraulics Bosch Rexroth AG 3/ Function, section General he type DBE proportional pressure relief valves are fine control valves of poppet design and are used to limit a system pressure. hey are operated by a proportional solenoid with central thread and removable coil. he inner chamber is connected with port or Y and is filled with pressure fluid. With these valves it is possible to infinitely vary the system pressure, which is to be limited, in relation to the electrical command value. hese valves basically comprise of the housing (), a proportional solenoid (), the valve seat (3) and the valve poppet (). Basic principle o adjust the system pressure a command value is applied to the control electronics. he electronics apply an electrical current to the solenoid which is in relation to the command value. he proportional solenoid converts the electrical current into a mechanical force that acts via the armature pin (5) on the valve poppet (). he valve poppet () presses directly onto the valve seat (3) and closes the connection between and or Y. If the hydraulic force on the valve poppet () is the same as the solenoid force, then the valve controls the set pressure in that the valve poppet () lifts off the valve seat (3) and permits pressure fluid to flow from port to or Y. At a zero command value the control electronics only apply a minimum control current to the proportional solenoid () and thereby sets the minimum settable pressure. ype DBE ype DBE...Y ilot oil drain external ype DBEE ype DBEE with integrated control electronics (OBE) he function and design of this valve is the same as the valve type DBE. On the proportional solenoid there is an additional housing (6) which contains the control electronics. he supply and command value voltages are fed to the component plug (7). he command value-pressurecharacteristic curve is factory pre-set to a low example spread. For further details regarding the control electronics, see page 5 to 7.

4 / Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 echnical data (for applications outside these parameters, please consult us!) General DBE DBEE Installation Optional Storage temperature range C 0 to +80 Ambient temperature range C 0 to to +50 Weight kg.0.5 Hydraulic (measured with HL 6; ϑ oil = 0 C ± 5 C ) DBE DBEE Max. operating pressure ort 0 Max. settable pressure ressure stage 50 bar bar 50 ressure stage 00 bar bar 00 ressure stage 00 bar bar 00 ressure stage 35 bar bar 35 ressure stage 350 bar bar 350 ressure stage 0 bar bar 0 Min. settable pressure (with a zero command value 0 V or ma) bar See char. curves on pages 0ee Return pressure ort or Y bar Separate and at zero pressure to tank Max. flow L/min ) ressure fluid Mineral oil (HL, HL) to DIN 55 Other pressure fluids on request! ressure fluid temperature range C 0 to +80 Viscosity range mm /s 0 to 380 perferably to 30 to 6 Maximum permissible contamination degree of pressure fluid Cleanliness class to ISO 06 (c) class 0/8/5 ) Hysteresis % < of the max. settable pressure Reversal span % < 0.5 of the max. settable pressure Response sensitivity % < 0.5 of the max. settable pressure Linearity (flow 0.8 l/min) % ±3 of the max. settable pressure Example spread of the com. value-pressure-char. curves at 0.8 l/min; pressure rising Step response ( u + g ) 0 00% or 00% 0 ipe volume < 0 cm 3 ; q V = 0.8 l/min ) ake into account the notes regarding flow limitation on pages 8 and 9, pressure stages 35 and 350 bar ) he cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the component service life. For the selection of filters see catalogue sheets RE 50070, RE 50076, RE 5008, RE and RE ) Zero point calibration is factory pre-set ) Calibration is possible on the control electronics At com. value 0% % < ±.5 of the max. settable pressure 3) At com. value 00% % < ±5 of the max. settable pressure ) < ±.5 of the max. settable pressure ms 80 (depending on the system!)

5 RE 96/05.06 DBE; DBEE Hydraulics Bosch Rexroth AG 5/ echnical data (for applications outside these parameters, please consult us!) Electrical DBE DBEE Supply voltage Nominal voltage VDC Lower limiting value VDC Upper limiting value VDC 35 Min. control current (with a 0 V or ma com. value) ma 00 Max. control current ma 600 ) 600 Coil resistance Cold value at 0 C Ω 5.5 Max. warm value Ω 8.05 Duty % 00 Electrical connentions Component plug and plug-in connector to DIN EN DIN EN Valve protection to EN 6059 I65 with mounted and locked plug-in connector Control electronics ) DBE DBEE External amplifier Integrated into the valve, see page Amplifier in Eurocard format (separate order) to catalogue sheet RE 305 Amplifier of modular design (separate order) to catalogue sheet RE 303 Analogue Analogue V-VSA--X V-VSAK--X V-MSA--X ) Dependent on the amplifier, see control electronics (external amplifier) ) lug-in proportional amplifier V-SSA--X/V0/0- on enquiry. (In this case, the characteristic curves and technical data specified in this data sheet are invalid!) Note! For details regarding the environmental simulation test covering EMC (electro-magnetic compatibility), climate and mechanical loading see RE 96-U (declaration regarding environmental compatibility).

6 6/ Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 Electrical connections, plug-in connectors For type DBE (for external control electronics) lug-in connector (black) to DIN EN Separate order under Material No. R90070 Component plug connections lug-in connector connections Seal material NBR For type DBEE with integrated control electronics (OBE) lug-in connector to DIN EN For pin allocation see block dircuit diagram on page 7 Soldered contacts: from 0.5 to.5 mm (valid for both plug-in connectors) o amplifier Material No. R (plastic version) Separate order Material No. R (metal version) Separate order Ø8 85 Ø8 Ø3,5 B C D A F E Component plug pin allocation for type DBEE ) Contact Interface A pin allocation Interface F pin allocation Supply voltage A VDC (u(t) = V to 35 V); I max <= A B 0 V Act. value ref. potential C Ref. contact F; 0 V Ref. contact F; 0 V Differential amplifier input D 0 to 0 V Re > 00 kω...0 ma; Re > 00 Ω Measurement output (act. value) E F E Command value ref. potential 0 to.6 V act. value ( mv ma) ohmic resistance > 0 kω Connected with the solenoid and valve housing ) Also see the supply voltage on page 7

7 RE 96/05.06 DBE; DBEE Hydraulics Bosch Rexroth AG 7/ Integrated control electronics (OBE), for type DBEE Function he electronics are supplied with a voltage via connections A and B. he command value is applied to the differential amplifier connections D and E. he ramp generator forms from a command value jump (0%...00% or 00%...0%) a delayed increase or decrease of the solenoid current. he increase and decrease times are fixed and cannot be changed. Via the characteristic curve generator the command valuesolenoid-characteristic curve is so matched to the valve so that unlineararities in the hydraulics are compensated for and a linear command value-pressure-characteristic curve results. he current controller regulates the solenoid current independent of the solenoid coil resistance. he power stage of the electronics for controlling the proportional solenoids is a chopper amplifier with a clock pulse frequency of approx. 80 Hz to 00 Hz. he output signal is pulsewidth-modulated (WM). o test the solenoid current it is possible, at the plug, to measure a voltage between pin F (+) and pin C ( ), that reacts in proportion to the solenoid current. ma solenoid current is mv. Block circuit diagram Supply voltage V A DC GND B DC Act. value ref. potential Com. value Com. value ref. potential Act. value C D E F E Differential amplifier U U U U Char. curve generator Current regualtor = Chopper amplifier Solenoid Oscillator Supply voltage ower supply with rectifier Single phase rectification or AC bridge: U eff = to 35 V Output current: I eff = max..85 A Supply cable: Recommended 6-core 0.75 or mm plus earth and screen Outside diameter is dependent on the plug-in connector (page 6) Only connect the screen to E on the supply side Max. permissible length 00 m he minimum supply voltage at the power supply is dependent on the length of the supply cable (see diagram). For lengths > 50 m a 00 μf condenser must be fitted in the supply cable in the vicinity of the valve. Min. supply voltage in V Supply cable length in m

8 8/ Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 Characteristic curves (measured with HL 6, ϑ oil = 0 C ± 5 C) ressure in port in relation to the command value Flow = 0.8 l/min DBE 00 ) DBEE 00 ressure in port in % At 0% zero point calibration, factory set Com. value in % ressure in port in % Command value in % ) he tolerance can be changed at the external amplifier, for type and catalogue sheet see page 5, (command value attenuation potentiometer Gw ). For a description, see the data sheet of the amplifier. Max. permissible current 750 ma (can be measured at amplifier measurement socket I ) In order that more than one valve can be calibrated to the same characteristic curve, with a 00% command value the pressure should not be set higher than the maximum settable pressures stated on page.

9 RE 96/05.06 DBE; DBEE Hydraulics Bosch Rexroth AG 9/ Characteristic curves (measured with HL 6, ϑ oil = 0 C ± 5 C) ressure in port in relation to the flow ressure stage 50 bar , 0,8,,6,0 ressure stage 00 bar , 0,8,,6,0 ressure stage 00 bar ressure stage 35 bar ) max. op. pressure , 0,8,,6,0 ressure stage 350 bar ) Max. op. pressure , 0,8,,6,0 ressure stage 0 bar , 0,8,,6,0 ) With characteristic curve 5, the command value must not exceed a flow of. l/min ) With pressure stage 350 bar, characteristic curve 5, the command value must not exceed a flow of 0.8 l/min Valid for all pressure stages: Curve = 0 % command value Curve = 5 % command value Curve 3 = 50 % command value Curve = 75 % command value Curve 5 = 00 % command value; ) he characteristic curves were measured without any back pressure in port. (p = 0 bar)

10 0/ Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 Characteristic curves (measured with HL 6, ϑ oil = 0 C ± 5 C) Min. settable pressure in port with a 0 V or ma command value in relation to the flow ressure stage 50 bar ressure stage 00 bar ressure stage 00 bar ressure stage 35 bar ressure stage 350 bar ressure stage 0 bar Note he characteristic curves were measured without any back pressure in port. (p = 0 bar) Min. control current 00 ma (his current is set with a command value of 0 V or ma)

11 RE 96/05.06 DBE; DBEE Hydraulics Bosch Rexroth AG / Unit dimensions: type DBE (nominal dimensions in mm) 5 Ø,9 37, Ø5 G/ Y + 7,5 Ø 0 Ø 5,5 56, Y 9,3 8,3 0,5 9, ,5 A F F F B F Required surface of the valve mounting face roportional solenoid Valve housing 3 Name plate Same sealing rings for ports,, A and B 5 lug-in connector to DIN EN (separate order, see page 6) 6 Space required to remove the plug-in connector 7 Blind counterbores A and B 8 With version..y.. (external pilot oil drain), port Y is internally conntected to port! ort is not plugged! 9 Machined valve mounting surface port location to ISO Deviations from the standard: Locating pin is not provided A and B ports are not drilled Subplates to catalogue sheet RE 505 and valve fixing screws must be ordered separately. Subplates: G 3/0 (G /) G 3/0 (G 3/8) G 50/0 (G /) Valve fixing screws: (not included within the scope of supply) Due to strength (tensile) reasons only use the following valve fixing screws: S.H.C.S. ISO 76 - M5 x 5-0.9; Coating to DIN EN ISO 0683 flzn - 0h - L (friction value to VDA 35-0); M A = 7 Nm ± 0% separate order Mat. No. R930000

12 / Bosch Rexroth AG Hydraulics DBE; DBEE RE 96/05.06 Unit dimensions: type DBEE (nominal dimensions in mm) R 0 8 max. 00 5,5 0 Ø5 G/ Y Ø,9 37,5 + roportional solenoid Valve housing 3 Integrated control electronics Same sealing rings for ports,, A and B 5 lug-in connector to DIN EN (separate order, see page 6) 6 Space required to remove the plug-in connector 7 Cable bend radius 8 Cable fixing 9 Blind counterbores A und B Ø With version..y.. (external pilot oil drain), port Y is internally conntected to port! ort is not plugged! Name plate Block circuit diagram of the integrated control electronics 3 Machined valve mounting surface, port location to ISO Deviations from the standard: Locating pin is not provided A and B ports are not drilled Subplates to catalogue sheet RE 505 and valve fixing screws must be ordered separately. Subplates: G 3/0 (G /) G 3/0 (G 3/8) G 50/0 (G /) 7 7,5 8 56,5 Ø 0 9 9,3 0,5 0,5 A F F 59 F B F3 5 7Ø 5,5 3 9,7 Y Required surface of the valve mounting face Valve fixing screws: (not included within the scope of supply) Due to strength (tensile) reasons only use the following valve fixing screws: S.H.C.S. ISO 76 - M5 x 5-0.9; Coating DIN EN ISO 0683 flzn - 0h - L (friction value to VDA 35-0); M A = 7 Nm ± 0% Separate order Mat. No. R Bosch Rexroth AG Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany hone +9 (0) 93 5 / 8-0 Fax +9 (0) 93 5 / documentation@boschrexroth.de his 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. 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.