Industrial Hydraulics FAQs

Transcription

1 Industrial Hydraulics FAQs FAQ itle: V roportional valve coils Category: roportional and Servo Valves Sub-Category: roportional Valves osch Rexroth Corporation Hydraulics City Line Road ethlehem, A 807 el (87) Question: How or when should I apply V solenoids or coils to proportional valves? Answer: - roportional solenoids, or coils, are current controlled devices where voltage alone really doesn t determine the answer. It is better to use the maximum current required and the warm coil resistance to calculate whether a solenoid/coil can be driven in a V system. - For example the WRA-X valves (RE90) require a maximum current of.a and have a warm resistance of ohms. he Ohm s law formula to calculate the voltage when the resistance and current are known is V=I(current) X R(ohms). With the values that the WRA- X valve requires only 7.V is needed to supply the required current not taking into consideration any line loss. So the WRA-X could be used in a system that only has Vdc available but the current to the coils would need to be regulated so as not to overdrive them. - An example showing a valve that can t be used in a V system is to look at the DE-6X(RE96). Maximum current required is.6a and the warm resistance is 8.0 ohms. he minimum voltage needed would be.88vdc. So a Vdc system would not be able to drive the DE-6X fully. - he data sheets offered as attachments provide the max current and warm resistance values to assist in applying the correct valve for the application s requirements. For example, page 6 of RE 9 0, defines both these values. Attachments: RE90, RE96 Updated: JS_September0

2 /- and /-way proportional directional valves, direct operated, without electrical position feedback, without/with integrated electronics (OE) RE 90/0.0 Replaces: 08.0 /6 ypes WRA and WRAE Nominal sizes 6 and 0 Component series X Maximum operating pressure bar Maximum flow: l/min (NS6) 7 l/min (NS0) H678 ype WRAE 6 -X/GK/.V with integrated electronics (OE) H96 yp WRA 0 -X/G K/V with plug-in connectors and associated control electronics (separate order) Overview of contents Features Contents age Features Ordering details Symbols Function, section echnical data, 6 Control electronics 6 Electrical connections, plug-in connectors 7 Integrated electronics (OE) for type WRAE 8 Characteristic curves 9... Unit dimensions... Direct operated proportional directional valve without electrical position feedback and integrated electronics (OE) for type WRAE Control the direction and magnitude of a flow Actuation by means of proportional solenoids with central thread and removable coil For subplate mounting: Connection position to ISO 0 Subplates to catalogue sheets RE 0 (NS6) or RE 0 (NS0) separate order, see page to Spring centred control spool Control electronics WRAE: - integrated electronics (OE) with voltage input or current input (A resp. F) WRA: - digital or analogue amplifier in Eurocard format (separate order) - analogue module amplifier For information regarding the available spare parts see:

3 /6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Ordering details WRA X G V * Without integrated electronics (OE) With integrated electronics (OE) = No code = E Nominal size 6 = 6 Nominal size 0 = 0 Spool symbols A a 0 b A a 0 With spool symbols E and W : A: q V max : q V / : q V / A : q V max Note: With spools W and WA, in the neutral position, there is a connection from A to and to with approx. % of the relevant nominal crosssection. = E E = W W = EA = WA G = V = Further details in clear text Seal material FKM seals, suitable for mineral oil (HL, HL) to DIN Electronic interfaces A or F for WRAE A = Command value input ± 0 V F = Command value input to 0 ma No code = For WRA Electrical connections for WRA: K ) = Without plug-in connector, with component plug to DIN EN plug-in connector separate order, see page 7 for WRAE: K ) = Without plug-in connector, with component plug to DIN EN plug-in connector separate order, see page 7 Special protection No code = Without special protection J ) = Sea water resistant (only for NS6) For details regarding the sea water resistant versions see RE 90-M Supply voltage VDC X = Component series 0 to 9 (0 to 9: unchanged installation and connection dimensions) Nominal flow at a valve pressure differential p = 0 bar NS6 07 = 7 l/min = l/min 0 = 6 l/min NS0 0 = 0 l/min 60 = 60 l/min ) Other types of electrical protection on request ) Only for NS6: for version "J" = sea water resistant only state "K"!

4 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG /6 Symbols Without integrated electronics ype WRA A With integrated electronics (OE) ype WRAE A a a 0 b b a a 0 b b ypes WRA EA ; WRA WA A ypes WRAE EA ; WRAE WA A a a 0 b a a 0 b

5 /6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Function, section he /- and /-way proportioanl directional valves are designed as direct operated components for subplate mounting. hey are actuated by means of proportional solenoids with central thread and removable coil. he solenoids are controlled either by external control electronics (type WRA) or by integrated control electronics (type WRAE). Design: he valves basically consist of: Housing () with mounting surface Control spool () with compression springs ( and ) Solenoids ( and 6) with central thread Optional integrated electronics (7) Function: With the solenoids ( and 6) de-energised, the control spool () is held in the central position by compression springs ( and ) Direct actuation of the control spool () by energising a proportional solenoid E.g. energinsaion of solenoid "b" (6) he control spool () is moved to the left in proportion to the electrical input signal connection from to A and to via orifice-like crosssections with progressive flow characterisics De-energisation of the solenoid (6) he control spool () is returned to the central position by compression spring () ype WRA 6 -X/ A a b A () 8. 6 ype WRAE 0 -X/ 7 a b Valve with spool positions: (ype WRA A ) A 8. 6 In principle, the function of this valve version corresponds to that of the valve with spool positions. However, the valves with spool positions are only fitted with solenoid "a". Instead of the the nd proportional solenoid a plug (8.) is fitted for NS 6 or for NS 0 a cover (8.). Note for type WRA 6 -X/ : Draining of the tank line is to be avoided. With the appropriate installation conditions, a back pressure valve is to be installed (back pressure approx. bar).

6 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG /6 echnical data (for applications outside these parameters, please consult us!) General Nominal size NS 6 0 Installation optional, preferably horizontal Storage temperature range C 0 to +80 Ambient WRA C 0 to +70 temperature range WRAE C 0 to +0 Weight WRA kg WRAE kg. 6.8 Hydraulic (measured with HL6, ϑ oil = 0 C ± C) Max. operating pressure orts A,, bar ort bar 0 Nominal flow q V nom at p = 0 bar l/min 7,, 6 0, 60 Max. permissible flow l/min (80) ) 7 (0) ) ressure fluid mineral oil (HL, HL) to DIN other pressure fluids on request! ressure fluid temperature range C 0 to +80 (preferably +0 to +0) Viscosity range mm /s 0 to 80 (preferably 0 to 6) Max. permissible degree of pressure fluid contamination cleanlisness class to ISO 06 (c) class 0/8/ ) Hysteresis % Reversal error % Response sensitivity % 0. ) Max. permissible flow with a dual flow path ) 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 0070, RE 0076, RE 008, RE 0086 and RE 0088.

7 6/6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 echnical data (for applications outside these parameters, please consult us!) Electical Nominal size NS 6 0 Voltage type DC Command value signal Voltage input A V ±0 with type WRAE Current input F ma to 0 Max. current per solenoid A. Solenoid coil Cold value at 0 C Ω resistance Max. warm value Ω Duty % 00 Max. coil temperature ) C 0 Electrical connections WRA with component plug to DIN EN or ISO 00 see page 7 plug-in connector to DIN EN or ISO 00 ) Valve protection to EN 609 Control electronics WRAE with component plug to DIN EN plug-in connector DIN EN ) I6 with mounted and fixed plug-in connector For WRA Digital amplifier in Eurocard format ) V-VSD--X ( to RE 0 - middle of 006) Analogue amplifier in Eurocard format ) V-VSA--X/ to RE 00 Analogue module amplifier ) V-MSA--X to RE 08 For WRAE integrated into the valves, see page 8 Analogue command value module V- SWMA--X/... to RE 990 Analogue command value module V-SWMKA--X/... to RE 990 Digital command value card V-HACD--X/ to RE 0 Analogue command value card V-SWKA--X/... to RE 0 Supply voltage Nominal voltage VDC WRAE, WRA ) Lower limiting value V / (WRA); 9 (WRAE) Upper limiting value V Amplifier current I max A.8 consumption Max. impulse current A ) Due to the occurring surface temperature of the solenoid coils, the European Standards DIN EN 6 and DIN EN 98 must be taken into account! ) Separate order ) With osch Rexroth AG control electronics Note: For details regarding the environmental simulation test covering EMC (electromagnetic compatibility), climate and mechanical loading see RE 90-U (declaration regarding environmental compatibility).

8 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG 7/6 Electrical connection, plug-in connectors For type WRA (without integrated electronics not for version "J" = sea water resistant) Connection on component plug Connection on plug-in connector E E E E o amplifier o amplifier 7, lug-in connector CECC A00FA-HD08-G to DIN EN or ISO 00 Solenoid a, colour grey Separate order: Material No. R Solenoid b, colour black Separate order: Material No. R A 0V GDM 0 For type WRAE (with integrated electronics (OE) and for version "J" = sea water resistant) For pin allocation, see block circuit diagram on page 8,, Fixing screws M ightening torque M A = 0. Nm lug-in connector to DIN EN Separate order: Material No. R (plastic version) 9 Ø7 lug-in connector to DIN EN Separate order: Material No. R (metal version) Ø6, C D A F E 8 Ø8 Ø,

9 8/6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Integrated electronics (OE) for type WRAE in allocation of the component plug A C D E F Integrated control electronics (see below) in allocation Contact Signal Supply A VDC (9 to VDC) voltage GND C n.c. ) Differential D Com. value (± 0 V / to 0 ma) amplifier input E reference potential F n.c. Com. value: ositive command value (0 to 0 V or to 0 ma) at D and reference potential to E causes flow from to A and to. Negative command value (0 to 0 V or to ma) at D and reference potential to E causes flow from to and A to. For valves with a solenoid on side A (spool variants EA and WA) a positive command value at D and reference potential to E (NS 6: to 0 ma and NS 0: to 0 ma) causes flow from to and A to. Connection cable: Recommendation: up to m cable length type LiYCY x 0.7 mm up to 0 m calbe length type LiYCY x.0 mm External diameter 6. to mm Connect screen to E only on the supply side. ) Contacts C and F must not be connected! lock circuit diagram / connection allocation Interface Integrated electronics (OE) Valve Com. value Ref. potential D E Differential amplifier U U Ramp generator ) Summator Σ Output stage ) U I Low voltage detection 6) Step function generator Interlock Output stage ) U I V Supply voltage GND rotective conductor ; ) A E ower supply unit + U U i U 0 V U i ) E is connected to the cooling body and the valve housing ) rotective conductor screwed to the valve housing and cover ) Ramp can be externally adjusted from 0 to. s; the same applies for up and down ) Output stages current regulated 6) Low voltage detection is not carried out for component type WRAE 0-X. )

10 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG 9/6 Characteristic curves (measured with HL6, ϑ oil = 0 C ± C) NS6 7 l/min nominal flow at 0 bar valve pressure differential Flow in l/min A / or / A l/min nominal flow at 0 bar valve pressure differential 0 A / or 0 / A Flow in l/min Command value in % Command value in % 0 l/min nominal flow at 0 bar valve pressure differential Flow in l/min A / or / A Command value in % p = 0 bar constant p = 0 bar constant p = 0 bar constant p = 0 bar constant p = 00 bar contant p = Valve pressure differential (inlet pressure p minus load pressure p L and minus return pressure p ) Characteristic curves (measured with HL6, ϑ oil = 0 C ± C) NS0 0 l/min nominal flow at 0 bar valve pressure differential 60 l/min nominal flow at 0 bar valve pressure differential Flow in l/min A / or / A Flow in l/min A / or / A, Command value in % p = 0 bar constant p = 0 bar constant p = 0 bar constant p = 0 bar constant p = 00 bar contant Command value in % p = Valve pressure differential (inlet pressure p minus load pressure p L and minus return pressure p )

11 0/6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Characteristic curves (measured with HL6, ϑ oil = 0 C ± C) NS6 ransient functions with stepped form of electrical input signals ypes WRA and WRAE Signal change in % Stroke in % ime in ms erformance limit, nominal flow 7 l/min A / or 0 / A 7 erformance limit, nominal flow l/min A / or 0 / A 7 Flow in l/min Flow in l/min Valve pressure differential in bar Valve pressure differential in bar erformance limit, nominal flow 0 l/min Flow in l/min A / oder / A Valve pressure differential in bar 67 Com. value = 0 % Com. value = 0 % Com. value = 60 % Com. value = 70 % Com. value = 80 % 6 Com. value = 90 % 7 Com. value = 00 % If the performance limits are exceeded then flow forces occur which lead to uncontrolled spool movements.

12 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG /6 Characteristic curves (measured with HL6, ϑ oil = 0 C ± C) NS0 ransient functions with stepped form of electrical input signals Stroke in % Signal change in % ime in ms erformance limit, nominal flow 0 l/min erformance limit, nominal flow 60 l/min Flowin l/min A / Valve pressure differential in bar or / A 7 6 Flow in l/min A / Valve pressure differential in bar or / A Com. value = 0 % Com. value = 0 % Com. value = 60 % Com. value = 70 % Com. value = 80 % 6 Com. value = 90 % 7 Com. value = 00 % If the performance limits are exceeded then flow forces occur which lead to uncontrolled spool movements.

13 /6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Unit dimensions: ype WRA 6 (nominal dimensions in mm) NS6.. 8 A 8, a b 7, 69 79, (,) 8, 7, F A F F G F 0,0/00mm Rzmax Required surface finish of the valve mounting surface 7 olerances to: General tolerances ISO 768-mK Valve hounsing roportional solenoid "a" roportional solenoid "b". lug-in connector "A", colour grey, separate order, see page 7. lug-in connector "", colour black, separate order, see page 7 Name plate 6 Identical seal rings for ports A,, and 7 lug for valves with one solenoid ( switched positions, versions EA or WA) 8 Space required to remove the plug-in connector 9 Machined valve mounting surface, Connection location to ISO 0 (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: - without locating pin hole G - ports, A, and mit Ø8 mm Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G/0 (G/) G/0 (G/8) G0/0 (G/) Valve fixing screws (separate order) he following valve fixing screws are recommended: S.H.C.S. ISO 76 - M x flZn-0h-L (friction value µ total = 0.09 to 0.) ightening torque M A = 7 Nm ± 0% Material No. R (separate order) or S.H.C.S. ISO 76 - M x (friction value µ total = 0. to 0.7) ightening torque M A = 8.9 Nm ± 0%

14 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG /6 Unit dimensions: ype WRAE 6...K/..V (nominal dimensions in mm) NS , a b 7, 69 8, 6 79, (,), F A F F G F 0,0/00mm Rzmax 7 0 Required surface finish of the valve mounting surface olerance to: General tolerances to ISO 768-mK Valve housing roportional solenoid "a" roportional solenoid "b" lug-in connector to DIN EN 70-80, separate order, see page 7 Name plate 6 Identical seal rings for ports A,, und 7 lug for valves with one solenoid ( switched positions, versions EA or WA) 8 Integrated electronics (OE) 9 Space required for the connection cable and to remove the plug-in connector 0 Machined valve mounting surface, Connection location to ISO 0 (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: - without locating pin hole G - ports, A, and mit Ø8 mm Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G/0 (G/) G/0 (G/8) G0/0 (G/) Valve fixing screws (separate order) he following valve fixing screws are recommended: S.H.C.S. ISO 76 - M x flZn-0h-L (friction value µ total = 0.09 to 0.) ightening torque M A = 7 Nm ± 0% Material No. R (separate order) or S.H.C.S. ISO 76 - M x (friction value µ total = 0. to 0.7) ightening torque M A = 8.9 Nm ± 0%

15 /6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Unit dimensions: ype WRA 0 (nominal dimensions in mm) NS A 9 a b , (79,), 0 () F F 0,0/00mm 7,±0, A F 0,8±0, 0 F olerances to: Rzmax Required surface finish of the valve mounting surface General tolerances to ISO 768-mK Valve housing roportional solenoid "a" roportional solenoid "b". lug-in connector "A", colour grey, separate order, see page 7. lug-in connector "", colour black, separate order, see page 7 Name plate 6 Valve bleed screw Note: he valves are bled before delivery. 7 Identical seal rings for ports A,, and () 8 Cover for valves with one solenoid ( switched positions, versions EA or WA) 9 Space required to remove the plug-in connector 0 Machined valve mounting surface, Connection location to ISO 0 (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: ort Ø. mm Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G66/0 (G/8) G67/0 (G/) G/0 (G/) Valve fixing screws (separate order) he following valve fixing screws are recommended: S.C.H.S. ISO 76 - M6 x flZn-0h-L (friction value µ total = 0.09 to 0.) ightening torque M A =. Nm ± 0%, Material No. R (separate order) or S.C.H.S. ISO 76 - M6 x (friction value µ total = 0. to 0.7) ightening torque M A =, Nm ± 0%

16 RE 90/0.0 WRA; WRAE Hydraulics osch Rexroth AG /6 Unit dimensions: ype WRAE 0 (nominal dimensions in mm) NS a b 0 8 0, (79,) () 70, F F Valve housing 7 roportional solenoid "a" roportional solenoid "b" lug-in connector to DIN EN 70-80, separate order, see page 7 Name plate 6 Valve bleed screw Note: he valves are bled before delivery.,±0, 7 Identical seal rings for ports A,,, 8 Cover for valves with one solenoid ( switched positions, versions EA or WA) 9 Integrated electronics (OE) 0 Space required for the connection cable and to remove the plug-in connector A F 0,8±0, 0 Machined valve mounting surface, connection location to ISO 0 (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: ort Ø. mm F olerances to: 0,0/00mm Rzmax Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G66/0 (G/8) G67/0 (G/) G/0 (G/) Valve fixing screws(separate order) he following valve fixing screws are recommended: S.H.C.S. ISO 76 - M6 x flZn-0h-L (friction value µ total = 0.09 to 0.) ightening torque M A =. Nm ± 0%, Material No. R (separate order) or Required surface finish of the valve mounting surface General tolerances to ISO 768-mK S.H.C.S. ISO 76 - M6 x (friction value µ total = 0. to 0.7) ightening torque M A =, Nm ± 0%

17 6/6 osch Rexroth AG Hydraulics WRA; WRAE RE 90/0.0 Notes osch Rexroth AG Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany elefon +9 (0) 9 / 8-0 elefax +9 (0) 9 / 8-8 documentation@boschrexroth.de his document, as well as the data, specifications and other informations set forth in it, are the exclusive property of osch Rexroth AG. Without their consent it may not be reproduced or given to third parties. he data specified above only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. he details stated do not release you from the responsibility for carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing.

18 roportional pressure relief valve RE 96/0.0 Replaces: / ypes DE and DEE Nominal size 6 Component series 6X Maximum operating pressure 0 bar Maximum flow L/min HAD/68 ype DE-6X/.. HAD/70 ype DEE-6X/.. Overview of contents Contents age Features Ordering details referred types, symbols Function, section echnical data and Electrical connections, plug-in connectors 6 Integrated control electronics, block circuit diagram 7 Characteristic curves 8 and 9 Unit dimensions, type DE 0 Unit dimensions, type DEE 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 0, (separate order, see pages 0 and ) Internal control electronics for type DEE: Low example spread of the command value-pressurecharacteristic curve CE: For the type DEE with integrated control electronics the EMC directive 89/6/EWG 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 Environmental simulation test ). External control electronics for type DE (separate order, see page ) 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

19 / osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Ordering details DE 6X G * roportional pressure relief valve For external control electronics With integrated electronics = ohne ez. = E Component series 60 to 69 (60 to 69: unchanged installation and connection dimensions) = 6X Max. pressure stage Up to 0 bar = 0 Up to 00 bar = 00 Up to 00 bar = 00 Up to bar = Up to 0 bar = 0 Control electronics supply voltage V DC = G K = A = F = V = Further details in clear text FKM seals Integrated control electronics interface for the DEE: Command value input 0 to 0 VDC Command value input to 0 ma Electrical connections for the DE: Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 K = For the DEE: Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 Other types of protection on request! referred types ype DE ype DEE Material No. ype Material No. ype R DE-6X/0GKV R DEE-6X/0GKAV R DE-6X/00GKV R DEE-6X/00GKAV R DE-6X/00GKV R DEE-6X/00GKAV R DE-6X/GKV R DEE-6X/GKAV R DE-6X/0GKV R DEE-6X/0GKAV Symbols For external control electronics (type DE) With integrated control electronics (type DEE)

20 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG / Function, section General he type DE 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 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 () and the valve poppet (). asic 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 () on the valve poppet (). he valve poppet () presses directly onto the valve seat () and closes the connection between and. 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 () and permits pressure fluid to flow from port to. 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 DE ype DEE 6 7 ype DEE (with integrated control electronics) he function and design of this valve is the same as the valve type DE. 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 6.

21 / osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 echnical data (for applications outside these parameters, please consult us!) General DE DEE Installation Optional Storage temperature range C 0 to +80 Ambient temperature range C 0 to to +0 Weight kg.0. Hydraulic (measured with HL 6; ϑ oil = 0 C ± C ) DE DEE Max. operating pressure ort 0 Max. settable pressure ressure stage 0 bar bar 0 ressure stage 00 bar bar 00 ressure stage 00 bar bar 00 ressure stage bar bar ressure stage 0 bar bar 0 Min. settable pressure (with a zero command value 0 V or ma) bar See char. curves on pages 8 and 9ee Return pressure ort bar Separate and at zero pressure to tank Max. flow L/min ) ressure fluid Mineral oil (HL, HL) to DIN Other pressure fluids on request! ressure fluid temperature range C 0 to +80 Viscosity range mm /s 0 to 80 perferably to 0 to 6 Maximum permissible contamination degree of pressure fluid Cleanliness class to ISO 06 (c) class 0/8/ ) Hysteresis % < of the max. settable pressure Reversal span % < 0. of the max. settable pressure Response sensitivity % < 0. of the max. settable pressure Linearity (flow 0.8 L/min) % ± 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 ; q V = 0.8 L/min At com. value 0% % < ±. of the max. settable pressure ) At com. value 00% % < ± of the max. settable pressure ) < ±. of the max. settable pressure ms 80 (depending on the system!) ) ake into account the notes regarding flow limitation on pages 8 and 9, pressure stages and 0 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 0070, RE 0076, RE 008, RE 0086 and RE ) Zero point calibration is factory pre-set ) Calibration is possible on the control electronics

22 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG / echnical data (for applications outside these parameters, please consult us!) Electrical DE DEE Supply voltage Nominal voltage VDC Lower limiting value VDC Upper limiting value VDC 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. Max. warm value Ω 8.0 Duty % 00 Electrical connentions Component plug and plug-in connector to DIN EN DIN EN Valve protection to DIN 000 I 6 with mounted and locked plug-in connector Control electronics DE DEE External amplifier Integrated into the valve, see page Amplifier in Eurocard format (separate order) to catalogue sheet RE 0 Amplifier of modular design (separate order) to catalogue sheet RE 0 Analogue Analogue V-VSA--X V-VSAK--X V-MSA--X ) Dependent on the amplifier, see control electronics (external amplifier) 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).

23 6/ osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Electrical connections, plug-in connectors For type DE (for external control electronics) lug-in connector (black) to DIN EN Separate order under Material No. R , 7, Component plug connections E 6 Ø, lug-in connector connections E 0 0 o amplifier For type DEE (with integrated control electronics) lug-in connector to DIN EN For pin allocation see block dircuit diagram on page 7 Soldered contacts: from 0. to. mm (valid for both plug-in connectors) 9 Material No. R (plastic version) Separate order Ø7 Ø6, C D A F E Material No. R (metal version) Separate order A F 8 Ø8 Ø, C D E Component plug pin allocation for type DEE ) Contact Interface A pin allocation Interface F pin allocation Supply voltage A VDC (u(t) = V to V); I max <= A 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 V act. value ( mv ma) ohmic resistance > 0 kω Connected with the solenoid and valve housing ) Also see the supply voltage on page 7

24 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG 7/ Integrated control electronics (OE), block circuit diagram Function he electronics are supplied with a voltage via connections A and. 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. Supply voltage V A DC GND DC Act. value ref. potential Com. value C D Com. value ref. potential Act. value E F E Differential amplifier U U U U Ramp generator Gw Char. curve generator Current regualtor = Chopper amplifier Solenoid Oscillator Supply voltage ower supply with rectifier Single phase rectification or AC bridge: U eff = to V Output current: I eff = max..8 A Supply cable: Recommended 6-core 0.7 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 > 0 m a 00 µf condenser must be fitted in the supply cable in the vicinity of the valve. Min. supply voltage in V ,7 mm mm Supply cable length in m

25 8/ osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Characteristic curves (measured with HL 6, ϑ oil = 0 C ± C) ressure in port in relation to the command value ressure in port in % DE At 0% zero point calibration, factory set Com. value in % Flow = 0.8 L/min ressure in port in % DEE Command value in % ) he example spread can be reduced at the external amplifier, for type and catalogue sheet see page, (command value attenuation potentiometer Gw ). he description is contained within the amplifier catalogue sheet. Max. permissible current 70 ma (can be measured at the amplifier measurement socket I ) ) So 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. ressure in port in relation to the flow ressure stage 0 bar 60 ressure in port in bar , 0,8,,6,0 Flow in L/min ressure in port in bar ressure stage 00 bar , 0,8,,6,0 Flow in L/min ressure in port in bar ressure stage 00 bar ressure stage bar ) max. op. pressure , 0,8,,6,0 0 0, 0,8,,6,0 Flow in L/min Flow in L/min ressure in port in bar ) With characteristic curve, the command value must not exceed a flow of. L/min

26 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG 9/ Characteristic curves (measured with HL 6, ϑ oil = 0 C ± C) ressure in port in relation to the flow ressure stage 0 bar Max. op. pressure 0 ressure in port in bar , 0,8,,6,0 Flow in L/min ressure stage 0 bar,0 Valid for all pressure stages: Curve = 0 % command value Curve = % command value Curve = 0 % command value Curve = 7 % command value Curve = 00 % command value ) he characteristic curves were measured without any back pressure in port. (p = 0 bar) ) With pressure stage 0 bar, characteristic curve, the command value must not exceed a flow of 0.8 L/min Min. settable pressure in port with a 0 V or ma command value in relation to the flow ressure stage 00 bar,0 ressure in port in bar,,0,,0 0, 0 0, 0,8,,6,0 Flow in L/min ressure stage 00 bar 6 ressure in port in bar,,0,,0 0, 0 0, 0,8,,6,0 Flow in L/min ressure stage bar 6 ressure in port in bar ressure in port in bar ressure in port in bar 0 0, 0,8,,6,0 Flow in L/min ressure stage 0 bar 6 Note 0 0, 0,8,,6,0 Flow in L/min 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) 0 0, 0,8,,6,0 Flow in L/min

27 0/ osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Unit dimensions: type DE (in mm) Ø,9 7, 6 9 7, Ø 0 Ø, 9, 8, 6, 7 0, 7 0,7,7 7 8 F F A F F 0, 9 8 0,0/00 mm Rzmax he required surface finish of the mating piece when not fitting the valve onto a subplate roportional solenoid Valve housing Name plate Same sealing rings for ports,, A and lug-in connector to DIN EN (separate order, see page 6) 6 Space required to remove the plug-in connector 7 lind counterbores A and 8 Machined valve mounting surface port location to ISO Deviations from the standard: Locating pin is not provided A and ports are not drilled Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G /0 (G /) G /0 (G /8) G 0/0 (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. DIN 9 - M x - 0.9; Coating to DIN EN ISO 068 flzn - 0h - L (friction value to VDA -0); M A = 7 Nm ± 0% separate order Mat. No. R90000

28 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG / Unit dimensions: type DEE (in mm) R 0 8 max. 00 Ø,9, 7, 7, 6, Ø 0 9 7Ø, 0,7 Ø 7,7 9, 0, 7 8 F F A F F 0, 9 0 0,0/00 mm Rzmax he required surface finish of the mating piece when not fitting the valve onto a subplate roportional solenoid Valve housing Integrated control electronics Same sealing rings for ports,, A and 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 lind counterbores A und 0 Machined valve mounting surface port location to ISO Deviations from the standard: Locating pin is not provided A and ports are not drilled Name plate lock circuit diagram Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: G /0 (G /) G /0 (G /8) G 0/0 (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. DIN 9 - M x - 0.9; Coating DIN EN ISO 068 flzn - 0h - L (friction value to VDA -0); M A = 7 Nm ± 0% Separate order Mat. No. R90000

29 / osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Notes osch Rexroth AG Industrial Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany elefon +9 (0) 9 / 8-0 elefax +9 (0) 9 / 8-8 documentation@boschrexroth.de his document, as well as the data, specifi cations and other information set forth in it, are the exclusive property of osch Rexroth AG. Without their consent it may not be reproduced or given to third parties. he 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. he given information does not release the user from the obligation of own judgement and verifi cation. It must be remembered that our products are subject to a natural process of wear and aging.

30 roportional pressure relief valve RE 96/0.0 Replaces: / ypes DE and DEE Nominal size 6 Component series 6X Maximum operating pressure 0 bar Maximum flow L/min HAD/68 ype DE-6X/.. HAD/70 ype DEE-6X/.. Overview of contents Contents age Features Ordering details referred types, symbols Function, section echnical data and Electrical connections, plug-in connectors 6 Integrated control electronics, block circuit diagram 7 Characteristic curves 8 and 9 Unit dimensions, type DE 0 Unit dimensions, type DEE 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 0, (separate order, see pages 0 and ) Internal control electronics for type DEE: Low example spread of the command value-pressurecharacteristic curve CE: For the type DEE with integrated control electronics the EMC directive 89/6/EWG 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 Environmental simulation test ). External control electronics for type DE (separate order, see page ) 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

31 / osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Ordering details DE 6X G * roportional pressure relief valve For external control electronics With integrated electronics = ohne ez. = E Component series 60 to 69 (60 to 69: unchanged installation and connection dimensions) = 6X Max. pressure stage Up to 0 bar = 0 Up to 00 bar = 00 Up to 00 bar = 00 Up to bar = Up to 0 bar = 0 Control electronics supply voltage V DC = G K = A = F = V = Further details in clear text FKM seals Integrated control electronics interface for the DEE: Command value input 0 to 0 VDC Command value input to 0 ma Electrical connections for the DE: Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 K = For the DEE: Without plug-in connector, with component plug to DIN EN lug-in connector, separate order, see page 6 Other types of protection on request! referred types ype DE ype DEE Material No. ype Material No. ype R DE-6X/0GKV R DEE-6X/0GKAV R DE-6X/00GKV R DEE-6X/00GKAV R DE-6X/00GKV R DEE-6X/00GKAV R DE-6X/GKV R DEE-6X/GKAV R DE-6X/0GKV R DEE-6X/0GKAV Symbols For external control electronics (type DE) With integrated control electronics (type DEE)

32 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG / Function, section General he type DE 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 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 () and the valve poppet (). asic 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 () on the valve poppet (). he valve poppet () presses directly onto the valve seat () and closes the connection between and. 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 () and permits pressure fluid to flow from port to. 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 DE ype DEE 6 7 ype DEE (with integrated control electronics) he function and design of this valve is the same as the valve type DE. 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 6.

33 / osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 echnical data (for applications outside these parameters, please consult us!) General DE DEE Installation Optional Storage temperature range C 0 to +80 Ambient temperature range C 0 to to +0 Weight kg.0. Hydraulic (measured with HL 6; ϑ oil = 0 C ± C ) DE DEE Max. operating pressure ort 0 Max. settable pressure ressure stage 0 bar bar 0 ressure stage 00 bar bar 00 ressure stage 00 bar bar 00 ressure stage bar bar ressure stage 0 bar bar 0 Min. settable pressure (with a zero command value 0 V or ma) bar See char. curves on pages 8 and 9ee Return pressure ort bar Separate and at zero pressure to tank Max. flow L/min ) ressure fluid Mineral oil (HL, HL) to DIN Other pressure fluids on request! ressure fluid temperature range C 0 to +80 Viscosity range mm /s 0 to 80 perferably to 0 to 6 Maximum permissible contamination degree of pressure fluid Cleanliness class to ISO 06 (c) class 0/8/ ) Hysteresis % < of the max. settable pressure Reversal span % < 0. of the max. settable pressure Response sensitivity % < 0. of the max. settable pressure Linearity (flow 0.8 L/min) % ± 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 ; q V = 0.8 L/min At com. value 0% % < ±. of the max. settable pressure ) At com. value 00% % < ± of the max. settable pressure ) < ±. of the max. settable pressure ms 80 (depending on the system!) ) ake into account the notes regarding flow limitation on pages 8 and 9, pressure stages and 0 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 0070, RE 0076, RE 008, RE 0086 and RE ) Zero point calibration is factory pre-set ) Calibration is possible on the control electronics

34 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG / echnical data (for applications outside these parameters, please consult us!) Electrical DE DEE Supply voltage Nominal voltage VDC Lower limiting value VDC Upper limiting value VDC 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. Max. warm value Ω 8.0 Duty % 00 Electrical connentions Component plug and plug-in connector to DIN EN DIN EN Valve protection to DIN 000 I 6 with mounted and locked plug-in connector Control electronics DE DEE External amplifier Integrated into the valve, see page Amplifier in Eurocard format (separate order) to catalogue sheet RE 0 Amplifier of modular design (separate order) to catalogue sheet RE 0 Analogue Analogue V-VSA--X V-VSAK--X V-MSA--X ) Dependent on the amplifier, see control electronics (external amplifier) 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).

35 6/ osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Electrical connections, plug-in connectors For type DE (for external control electronics) lug-in connector (black) to DIN EN Separate order under Material No. R , 7, Component plug connections E 6 Ø, lug-in connector connections E 0 0 o amplifier For type DEE (with integrated control electronics) lug-in connector to DIN EN For pin allocation see block dircuit diagram on page 7 Soldered contacts: from 0. to. mm (valid for both plug-in connectors) 9 Material No. R (plastic version) Separate order Ø7 Ø6, C D A F E Material No. R (metal version) Separate order A F 8 Ø8 Ø, C D E Component plug pin allocation for type DEE ) Contact Interface A pin allocation Interface F pin allocation Supply voltage A VDC (u(t) = V to V); I max <= A 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 V act. value ( mv ma) ohmic resistance > 0 kω Connected with the solenoid and valve housing ) Also see the supply voltage on page 7

36 RE 96/0.0 DE; DEE Industrial Hydraulics osch Rexroth AG 7/ Integrated control electronics (OE), block circuit diagram Function he electronics are supplied with a voltage via connections A and. 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. Supply voltage V A DC GND DC Act. value ref. potential Com. value C D Com. value ref. potential Act. value E F E Differential amplifier U U U U Ramp generator Gw Char. curve generator Current regualtor = Chopper amplifier Solenoid Oscillator Supply voltage ower supply with rectifier Single phase rectification or AC bridge: U eff = to V Output current: I eff = max..8 A Supply cable: Recommended 6-core 0.7 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 > 0 m a 00 µf condenser must be fitted in the supply cable in the vicinity of the valve. Min. supply voltage in V ,7 mm mm Supply cable length in m

37 8/ osch Rexroth AG Industrial Hydraulics DE; DEE RE 96/0.0 Characteristic curves (measured with HL 6, ϑ oil = 0 C ± C) ressure in port in relation to the command value ressure in port in % DE At 0% zero point calibration, factory set Com. value in % Flow = 0.8 L/min ressure in port in % DEE Command value in % ) he example spread can be reduced at the external amplifier, for type and catalogue sheet see page, (command value attenuation potentiometer Gw ). he description is contained within the amplifier catalogue sheet. Max. permissible current 70 ma (can be measured at the amplifier measurement socket I ) ) So 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. ressure in port in relation to the flow ressure stage 0 bar 60 ressure in port in bar , 0,8,,6,0 Flow in L/min ressure in port in bar ressure stage 00 bar , 0,8,,6,0 Flow in L/min ressure in port in bar ressure stage 00 bar ressure stage bar ) max. op. pressure , 0,8,,6,0 0 0, 0,8,,6,0 Flow in L/min Flow in L/min ressure in port in bar ) With characteristic curve, the command value must not exceed a flow of. L/min