4/2- and 4/3-way proportional directional valves, direct operated, without electrical position feedback, without/with integrated electronics (OBE)

Transcription

1 /- and /-way proptional directional valves, direct operated, without electrical position feedback, without/with integrated electronics (OE) Types WR and WRE Nominal sizes 6 and Component series X Maximum operating pressure bar Maximum flow: l/min (NS6) 7 l/min (NS) Overview of contents Contents Page Features Ordering details Symbols Function, section Technical data, 6 Control electronics 6 Electrical connections, plug-in connects 7 Integrated electronics (OE) f type WRE 8 Characteristic curves 9... Unit dimensions... F infmation regarding the available spare parts see: H678 Type WRE 6 -X/GK/.V with integrated electronics (OE) Features RE 90/.0 Replaces: 08.0 H96 /6 Typ WR -X/G K/V with plug-in connects and associated control electronics (separate der) Direct operated proptional directional valve without electrical position feedback and integrated electronics (OE) f type WRE Control the direction and magnitude of a flow ctuation by means of proptional solenoids with central thread and removable coil F subplate mounting: Connection position to ISO Subplates to catalogue sheets RE 0 (NS6) RE 0 (NS) separate der, see page to Spring centred control spool Control electronics WRE: - integrated electronics (OE) with voltage input current input ( resp. F) WR: - digital analogue amplifier in Eurocard fmat (separate der) - analogue module amplifier

2 /6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Ordering details Without integrated electronics (OE) With integrated electronics (OE) = No code = E Nominal size 6 = 6 Nominal size = Spool symbols a 0 b P a 0 With spool symbols E and W : P : q V max T: q V / P : q V / T: q V max Note: With spools W and W, in the neutral position, there is a connection from to T and to T with approx. % of the relevant nominal crosssection. WR X G V * P T T = E E = W W = E = W Further details in clear text Seal material V = FKM seals, suitable f mineral oil (HL, HLP) to DIN Electronic interfaces F f WRE = Command value input ± V F = Command value input to m No code = F WR Electrical connections f WR: K ) = Without plug-in connect, with component plug to DIN EN 7-80 plug-in connect separate der, see page 7 f WRE: K ) = Without plug-in connect, with component plug to DIN EN 7-80 plug-in connect separate der, see page 7 Special protection No code = Without special protection J ) = Sea water resistant (only f NS6) F details regarding the sea water resistant versions see RE 90-M G = Supply voltage VDC X = Component series to 9 ( to 9: unchanged installation and connection dimensions) Nominal flow at a valve pressure differential p = bar NS6 07 = 7 l/min = l/min = 6 l/min NS = l/min 60 = 60 l/min ) Other types of electrical protection on request ) Only f NS6: f version "J" = sea water resistant only state "K"!

3 RE 90/.0 WR; WRE Hydraulics osch Rexroth G /6 Symbols Without integrated electronics Type WR a 0 b a P T Types WR E ; WR W a 0 a b P T b With integrated electronics (OE) Type WRE a 0 b a P T Types WRE E ; WRE W a 0 a b P T b

4 /6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Function, section The /- and /-way proptioanl directional valves are designed as direct operated components f subplate mounting. They are actuated by means of proptional solenoids with central thread and removable coil. The solenoids are controlled either by external control electronics (type WR) by integrated control electronics (type WRE). Design: The valves basically consist of: Housing () with mounting surface Control spool () with compression springs ( and ) Solenoids ( and 6) with central thread Optional integrated electronics (7) Type WR 6 -X/ Type WRE -X/ a b T (P) 8. 6 a T P T 8. 6 Valve with spool positions: (Type WR ) In principle, the function of this valve version cresponds 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 proptional solenoid a plug (8.) is fitted f NS 6 f NS a cover (8.). 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 proptional solenoid E.g. energinsaion of solenoid "b" (6) The control spool () is moved to the left in proption to the electrical input signal connection from P to and to T via ifice-like crosssections with progressive flow characterisics De-energisation of the solenoid (6) The control spool () is returned to the central position by compression spring () b Note f type WR 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). 7

5 RE 90/.0 WR; WRE Hydraulics osch Rexroth G /6 Technical data (f applications outside these parameters, please consult us!) General Nominal size NS 6 Installation optional, preferably hizontal Stage temperature range C to +80 mbient WR C to +70 temperature range WRE C to +0 Weight WR kg WRE kg. 6.8 Hydraulic (measured with HLP6, ϑ oil = C ± C) Max. operating pressure Pts,, P bar Pt T bar Nominal flow q V nom at p = bar l/min 7,, 6, 60 Max. permissible flow l/min (80) ) 7 () ) Pressure fluid mineral oil (HL, HLP) to DIN other pressure fluids on request! Pressure fluid temperature range C to +80 (preferably + to +0) Viscosity range mm /s to 80 (preferably to 6) Max. permissible degree of pressure fluid contamination cleanlisness class to ISO 6 (c) class /8/ ) Hysteresis % Reversal err % Response sensitivity % 0. ) Max. permissible flow with a dual flow path ) The cleanliness class stated f 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. F the selection of filters see catalogue sheets RE 0070, RE 0076, RE 008, RE 0086 and RE 0088.

6 6/6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Technical data (f applications outside these parameters, please consult us!) Electical Nominal size NS 6 Voltage type Command value signal Voltage input V ± with type WRE Current input F m to Max. current per. solenoid Solenoid coil Cold value at C Ω resistance Max. warm value Ω Duty % 0 Max. coil temperature ) C 0 Electrical connections WR with component plug to DIN EN 7-80 ISO 0 see page 7 plug-in connect to DIN EN 7-80 ISO 0 ) Valve protection to EN 609 WRE with component plug to DIN EN 7-80 DC plug-in connect DIN EN 7-80 ) IP6 with mounted and fixed plug-in connect Control electronics F WR Digital amplifier in Eurocard fmat ) VT-VSPD--X ( to RE - middle of 06) nalogue amplifier in Eurocard fmat ) VT-VSP--X/ to RE nalogue module amplifier ) VT-MSP--X to RE 8 F WRE integrated into the valves, see page 8 nalogue command value module VT- SWM--X/... to RE 990 nalogue command value module VT-SWMK--X/... to RE 990 Digital command value card VT-HCD--X/ to RE nalogue command value card VT-SWK--X/... to RE Supply voltage Nominal voltage VDC WRE, WR ) Lower limiting value V / (WR); 9 (WRE) Upper limiting value V mplifier current I max.8 consumption Max. impulse current ) 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 der ) With osch Rexroth G control electronics Note: F details regarding the environmental simulation test covering EMC (electromagnetic compatibility), climate and mechanical loading see RE 90-U (declaration regarding environmental compatibility).

7 RE 90/.0 WR; WRE Hydraulics osch Rexroth G 7/6 Electrical connection, plug-in connects F type WR (without integrated electronics not f version "J" = sea water resistant) Connection on component plug PE PE Plug-in connect CECC F-HD08-G to DIN EN 7-80 ISO 0 Solenoid a, colour grey Separate der: Material No. R9070 Solenoid b, colour black Separate der: Material No. R V 7, F type WRE (with integrated electronics (OE) and f version "J" = sea water resistant) F pin allocation, see block circuit diagram on page 8 Plug-in connect to DIN EN 7-80 Separate der: Material No. R (plastic version) Ø7 Plug-in connect to DIN EN 7-80 Separate der: Material No. R (metal version) 9 8 GDM Ø8 Ø, Ø6, Connection on plug-in connect PE To amplifier,, PE Fixing screws M Tightening tque M = 0. Nm C D To amplifier F E

8 8/6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Integrated electronics (OE) f type WRE Pin allocation of the component plug D E PE U C D E F Integrated control electronics (see below) lock circuit diagram / connection allocation U Ramp generat ) Power supply unit + U U i U 0 V U i Pin allocation Contact Signal Supply VDC (9 to VDC) voltage GND C n.c. ) Differential D Com. value (± V / to m) amplifier input E reference potential F n.c. Com. value: Positive command value (0 to V to m) at D and reference potential to E causes flow from P to and to T. Negative command value (0 to V to m) at D and reference potential to E causes flow from P to and to T. F valves with a solenoid on side (spool variants E and W) a positive command value at D and reference potential to E (NS 6: to m and NS : to m) causes flow from P to and to T. 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 PE only on the supply side. ) Contacts C and F must not be connected! Com. value Ref. potential V Supply voltage GND Protective conduct ; ) Interface Integrated electronics (OE) Valve Differential amplifier Low voltage detection 6) Step function generat ) PE is connected to the cooling body and the valve housing ) Protective conduct screwed to the valve housing and cover Summat Interlock ) Ramp can be externally adjusted from 0 to. s; the same applies f T up and T down ) Output stages current regulated 6) Low voltage detection is not carried out f component type WRE -X. ) Σ Output stage ) U U I Output stage ) I

9 RE 90/.0 WR; WRE Hydraulics osch Rexroth G 9/6 Characteristic curves (measured with HLP6, ϑ oil = C ± C) 7 l/min nominal flow at bar valve pressure differential P / T Command value in % l/min nominal flow at bar valve pressure differential Command value in % Command value in % l/min nominal flow at bar valve pressure differential P / T P / T NS Command value in % p = bar constant p = bar constant p = bar constant p = 0 bar constant p = 0 bar contant p = Valve pressure differential (inlet pressure p P minus load pressure p L and minus return pressure p T ) l/min nominal flow at bar valve pressure differential 60 l/min nominal flow at bar valve pressure differential P / T P / T P / T Characteristic curves (measured with HLP6, ϑ oil = C ± C) p = bar constant p = bar constant p = bar constant p = 0 bar constant p = 0 bar contant P / T P / T P / T P / T Command value in % NS p = Valve pressure differential (inlet pressure p P minus load pressure p L and minus return pressure p T ),

10 /6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Characteristic curves (measured with HLP6, ϑ oil = C ± C) Transient functions with stepped fm of electrical input signals Types WR and WRE Signal change in % Stroke in % Time in ms Perfmance limit, nominal flow 7 l/min P / T P / T Valve pressure differential in bar Perfmance limit, nominal flow l/min 0 P / T oder P / T Valve pressure differential in bar Perfmance limit, nominal flow l/min P / T P / T NS Valve pressure differential in bar Com. value = % Com. value = 0 % Com. value = 60 % Com. value = 70 % Com. value = 80 % 6 Com. value = 90 % 7 Com. value = 0 % If the perfmance limits are exceeded then flow fces occur which lead to uncontrolled spool movements. 7 6

11 RE 90/.0 WR; WRE Hydraulics osch Rexroth G /6 Characteristic curves (measured with HLP6, ϑ oil = C ± C) Transient functions with stepped fm of electrical input signals Perfmance limit, nominal flow l/min Flowin l/min Stroke in % Signal change in % Time in ms Valve pressure differential in bar Com. value = % Com. value = 0 % Com. value = 60 % Com. value = 70 % Com. value = 80 % 6 Com. value = 90 % 7 Com. value = 0 % P / T P / T Perfmance limit, nominal flow 60 l/min P / T 0 P / T Valve pressure differential in bar NS If the perfmance limits are exceeded then flow fces occur which lead to uncontrolled spool movements. 7 6

12 /6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Unit dimensions: Type WR 6 (nominal dimensions in mm).. 7 a 8, F F, 69 79, (,) P 9 7 T 6 F G F Valve hounsing Proptional solenoid "a" Proptional solenoid "b". Plug-in connect "", colour grey, separate der, see page 7. Plug-in connect "", colour black, separate der, see page 7 Name plate 6 Identical seal rings f pts,, P and T 7 Plug f valves with one solenoid ( switched positions, versions E W) 8 Space required to remove the plug-in connect 9 Machined valve mounting surface, Connection location to ISO (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: - without locating pin hole G - pts P,, and T mit Ø8 mm 8, b 7 Tolerances to: 8 0,0/0mm Rzmax Required surface finish of the valve mounting surface 7 8, General tolerances ISO 768-mK Subplates to catalogue sheet RE 0 and valve fixing screws must be dered separately. Subplates: G/0 (G/) G/0 (G/8) G0/0 (G/) Valve fixing screws (separate der) The following valve fixing screws are recommended: S.H.C.S. ISO 76 - M x flZn-h-L (friction value µ total = 0.09 to 0.) Tightening tque M = 7 Nm ± % Material No. R90006 (separate der) S.H.C.S. ISO 76 - M x (friction value µ total = 0. to 0.7) Tightening tque M = 8.9 Nm ± % NS6

13 RE 90/.0 WR; WRE Hydraulics osch Rexroth G /6 Unit dimensions: Type WRE 6...K/..V (nominal dimensions in mm) a, 0 Valve housing Proptional solenoid "a" Proptional solenoid "b" 7, 69 79, (,) 8 F F P 7 T F G F Plug-in connect to DIN EN 7-80, separate der, see page 7 Name plate 6 Identical seal rings f pts,, P und T 7 Plug f valves with one solenoid ( switched positions, versions E W) 8 Integrated electronics (OE) 9 Space required f the connection cable and to remove the plug-in connect Machined valve mounting surface, Connection location to ISO (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: - without locating pin hole G - pts P,, and T mit Ø8 mm 8, b 6 Tolerance to: 0,0/0mm Rzmax Required surface finish of the valve mounting surface 7, General tolerances to ISO 768-mK Subplates to catalogue sheet RE 0 and valve fixing screws must be dered separately. Subplates: G/0 (G/) G/0 (G/8) G0/0 (G/) Valve fixing screws (separate der) The following valve fixing screws are recommended: S.H.C.S. ISO 76 - M x flZn-h-L (friction value µ total = 0.09 to 0.) Tightening tque M = 7 Nm ± % Material No. R90006 (separate der) S.H.C.S. ISO 76 - M x (friction value µ total = 0. to 0.7) Tightening tque M = 8.9 Nm ± % NS6

14 /6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Unit dimensions: Type WR (nominal dimensions in mm). 6. Valve housing a,, (79,) 7,±0, Proptional solenoid "a" Proptional solenoid "b" T () 7 8 F F P 0,8±0,. Plug-in connect "", colour grey, separate der, see page 7. Plug-in connect "", colour black, separate der, see page 7 Name plate 6 Valve bleed screw Note: The valves are bled befe delivery. 7 Identical seal rings f pts,, P and T (T) 8 Cover f valves with one solenoid ( switched positions, versions E W) 9 Space required to remove the plug-in connect Machined valve mounting surface, Connection location to ISO (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: Pt T Ø. mm F T F b Tolerances to: ,0/0mm Rzmax Required surface finish of the valve mounting surface 8 General tolerances to ISO 768-mK Subplates to catalogue sheet RE 0 and valve fixing screws must be dered separately. Subplates: G66/0 (G/8) G67/0 (G/) G/0 (G/) Valve fixing screws (separate der) The following valve fixing screws are recommended: S.C.H.S. ISO 76 - M6 x -.9-flZn-h-L (friction value µ total = 0.09 to 0.) Tightening tque M =. Nm ± %, Material No. R90008 (separate der) S.C.H.S. ISO 76 - M6 x -.9 (friction value µ total = 0. to 0.7) Tightening tque M =, Nm ± % NS 9

15 RE 90/.0 WR; WRE Hydraulics osch Rexroth G /6 Unit dimensions: Type WRE (nominal dimensions in mm) a, 7 8 Valve housing, (79,) 7 Proptional solenoid "a" Proptional solenoid "b",±0, T F F P 0,8±0, Plug-in connect to DIN EN 7-80, separate der, see page 7 Name plate 6 Valve bleed screw Note: The valves are bled befe delivery. 7 Identical seal rings f pts,, P, T 8 Cover f valves with one solenoid ( switched positions, versions E W) 9 Integrated electronics (OE) Space required f the connection cable and to remove the plug-in connect Machined valve mounting surface, connection location to ISO (with locating pin hole) Code: (explanation to ISO 78) Deviation from the standard: Pt T Ø. mm F T F () b Tolerances to: 0,0/0mm Rzmax 70 Required surface finish of the valve mounting surface Subplates to catalogue sheet RE 0 and valve fixing screws must be dered separately. Subplates: G66/0 (G/8) G67/0 (G/) G/0 (G/) Valve fixing screws(separate der) The following valve fixing screws are recommended: S.H.C.S. ISO 76 - M6 x -.9-flZn-h-L (friction value µ total = 0.09 to 0.) Tightening tque M =. Nm ± %, Material No. R90008 (separate der) S.H.C.S. ISO 76 - M6 x -.9 (friction value µ total = 0. to 0.7) Tightening tque M =, Nm ± % NS 8 General tolerances to ISO 768-mK

16 6/6 osch Rexroth G Hydraulics WR; WRE RE 90/.0 Notes osch Rexroth G Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Telefon +9 (0) 9 / 8-0 Telefax +9 (0) 9 / 8-8 documentation@boschrexroth.de This document, as well as the data, specifications and other infmations set fth in it, are the exclusive property of osch Rexroth G. Without their consent it may not be reproduced given to third parties. The data specified above only serves to describe the product. No statements concerning a certain condition suitability f a certain application can be derived from our infmation. The details stated do not release you from the responsibility f carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing.