4/2- and 4/3-way proportional directional valves, direct actuated, without electrical position feedback Types 4WRA and 4WRAE

Transcription

1 RE 29 0/08.0 Replaces: /2- and /-way proptional directional valves, direct actuated, without electrical position feedback Types WR and WRE Nominal sizes 6 and Series 2X Maximum operating pressure bar Maximum flow 2 L/min (NS 6) Maximum flow 7 L/min (NS ) H//D 96/98 Type WR -2X/G2 K/.V with plug-in connects and associated control electronics (separate der) Overview of contents Description age Features Ordering details 2 referred types Symbols Function, section Technical data to 6 Electrical connections, plug-in connects 7 Integrated valve electronics f type WRE 8 Characteristic curves 9 to Unit dimensions 2 to H/ 678/9 Type WRE 6-2X/G2K/.V Features Direct actuated proptional valve f controlling the direction and volume of a flow ctuation by means of proptional solenoids with central thread and removable coil F subplate mounting: ting pattern to DIN 2 fm, ISO and CETO-R 2 H. Subplates to catalogue sheets RE 02 (NS 6) RE 0 (NS ) separate der, see pages 2 to Spring centred control spool Integrated control electronics, interface F f type WRE Control electronics f type WR: Electrical amplifier VT-VS2--X in Eurocard fmat (separate der), see RE 2 Digital amplifier VT-VSD--X in Eurocard fmat (separate der), see RE 2 02 by osch Rexroth G, Industrial Hydraulics, D-978 Lohr am Main ll rights reserved. No part of this document may be reproduced sted, processed, duplicated circulated using electronic systems, in any fm by any means, without the pri written authisation of osch Rexroth G. In the event of contravention of the above provisions, the contravening party is obliged to pay compensation. This document was prepared with the greatest of care, and all statements have been examined f crectness. This document is subject to alterations f reason of the continuing further development of products. No liability can be accepted f any increct incomplete statements. WR; WRE /6 RE 29 0/.99 0/0.98

2 Ordering details WR 2X / G2 / V * Without integrated control electronics = No code With integrated control electronics = E Nominal size 6 = 6 Nominal size = Symbols a 0 b a 0 T T = E E- = W W- = E = W With symbols E- and W-: : q V max T: q V /2 : q V /2 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 cross-section. Further details in clear text V = FKM seals, suitable f mineral oil (HL, HL) to DIN 2 No code = F WR F WRE: = Command value input ± V F = Command value input to m Electrical connections F WR: 2) K = Without plug-in connect, with component plug to DIN EN 7-80 lug-in connect separate der see page 7 F WRE: 2) K = Without plug-in connect, with component plug to E DIN 6-M6- lug-in connect separate der see page 7 Special protection No code = Without special protection ) J = Sea water resistant (only f NS 6) F details regarding the sea water resistance see RE 29 0-M G2 = Supply voltage 2 VDC 2X = Series to 29 ( to 29: unchanged installation and connection dimensions) Nominal flow at a valve pressure differential p = bar NS 6 07 = 7 L/min = L/min = 26 L/min NS = L/min 60 = 60 L/min ) Other types of electrical protection on request 2) Only f NS 6: f version "J" = sea water resistant only state "K"! RE 29 0/0.98 0/08.0 2/6 WR; WRE

3 referred types NS 6 Material no. Type WR 6 E07-2X/G2K/V WR 6 E-2X/G2K/V WR 6 E-2X/G2K/V 009 WR 6 E--2X/G2K/V WR 6 E--2X/G2K/V 009 WR 6 E-2X/G2K/V 009 WR 6 E-2X/G2K/V WR 6 W07-2X/G2K/V 0096 WR 6 W-2X/G2K/V 0097 WR 6 W-2X/G2K/V 0097 WR 6 W--2X/G2K/V 0098 WR 6 W--2X/G2K/V 0099 WR 6 W-2X/G2K/V 009 WR 6 W-2X/G2K/V WRE 6 E07-2X/G2K/V WRE 6 E-2X/G2K/V 0097 WRE 6 E-2X/G2K/V WRE 6 E--2X/G2K/V 0097 WRE 6 E--2X/G2K/V 0097 WRE 6 E-2X/G2K/V 0097 WRE 6 E-2X/G2K/V WRE 6 W07-2X/G2K/V WRE 6 W-2X/G2K/V WRE 6 W-2X/G2K/V WRE 6 W--2X/G2K/V WRE 6 W--2X/G2K/V 0098 WRE 6 W-2X/G2K/V WRE 6 W-2X/G2K/V NS Material no. Type WR E-2X/G2K/V 0096 WR E60-2X/G2K/V WR E--2X/G2K/V 0096 WR E-60-2X/G2K/V 0098 WR E-2X/G2K/V 0096 WR E60-2X/G2K/V WR W-2X/G2K/V 0096 WR W60-2X/G2K/V WR W--2X/G2K/V WR W-60-2X/G2K/V WR W-2X/G2K/V 009 WR W60-2X/G2K/V WRE E-2X/G2K/V 0098 WRE E60-2X/G2K/V 0098 WRE E--2X/G2K/V 0099 WRE E-60-2X/G2K/V 0098 WRE E-2X/G2K/V WRE E60-2X/G2K/V WRE W-2X/G2K/V WRE W60-2X/G2K/V WRE W--2X/G2K/V WRE W-60-2X/G2K/V WRE W-2X/G2K/V 0099 WRE W60-2X/G2K/V Symbols roptional directional valve without integrated control electronics Type WR roptional directional valve with integrated control electronics Type WRE a a 0 b b a a 0 b b T T Type WR Type WRE a a 0 b a a 0 b T T WR; WRE /6 RE 29 0/0.99 0/0.98

4 Function, section The /2- and /-way proptional 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 (2) with compression springs ( and ) Solenoids ( and 6) with central thread Optional integrated valve electronics (7) Functional description: With the solenoids ( and 6) de-energised, the control spool (2) is held in the central position by compression springs ( and ) Direct actuation of the control spool (2) by energising a proptional solenoid E.g. controlling of solenoid "b" (6) The control spool (2) is moved to the left in proption to the electrical input signal Connection fm to and to T via ifice-like cross sections with progressive flow characteristics De-energisation of the solenoid (6) The control spool (2) is returned to the central position by compression spring () Type WR X/ a b T () Type WRE...-2X/ 7 a b T T Valve with 2 spool positions: (Type WR ) In principle, the funtion of this valve version cresponds to that of the valve with spool positions. However, the valves with 2 spool positions are only fitted with solenoid "a". Instead of the 2nd proptional solenoid a plug (8.) is fitted f NS 6 f NS a cover (8.2). Note f type WR 6-2X/ : 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 2 bar). RE 29 0/0.00 0/0.98 /6 WR; WRE

5 Techincal data (f applications outside these parameters, please consult us!) General Valve type WR WRE Installation optional, preferably hizontal Stage temperature range C to + 80 mbient temperature range C to + 70 to + 0 Weight NS 6 kg NS kg Hydraulic (measured at p = 0 bar, with HL6 at C ± C) Operating pressure ts,, bar up to t T bar up to 2 Nominal flow q V nom NS 6 L/min 7, and 26 at p = bar NS L/min and 60 Max. permissible flow NS 6 L/min 2 (80 with double flow) NS L/min 7 ( with double flow) ressure fluid Mineral oil (HL, HL) to DIN 2 other pressure fluids on request! ressure fluid temperature range C to + 80 (preferably + to + 0) Viscosity range mm 2 /s to 80 (preferably to 6) Degree of contamination Maximum permissible degree Filter with a minimum of contamination of the retention rate of pressure fluid is to NS 68 β x 7 is recommended Hysteresis % Reversal err % Response sensitivity % 0. class 9 x = WR; WRE /6 RE 29 0/08.0 0/0.98

6 Technical data (f applications outside these parameters, please consult us!) Electrical Valve type WR ) WRE Voltage type DC Command value signal Voltage input V ± ± with type WRE Current input F m to to Max. current per solenoid Solenoid coil Cold value C Ω 2 2 resistance Max. warm value Ω Duty % 0 Max. coil temperature 2) C Up to 0 Electrical connections WR With component plug to DIN EN 7-80 and ISO 0 see page 7 lug-in connect to DIN EN 7-80 and ISO 0 ) WRE With component plug to E DIN 6-M6- lug-in connect E DIN 6-F6-/g ) Valve protection to DIN 00 I 6 with fitted and locked plug-in connect Control electronics F WR mplifier in Eurocard fmat ) VT-VS2--X/ see RE 2 Digital amplifier in Eurocard fmat ) VT-VSD--X see RE 2 F WRE Integrated into the valves, see page 8 nalogue command value module VT- SWM--X/... see RE nalogue command value module VT-SWMK--X/... see RE nalogue command value module VT-SWK--X/... see RE 2 Digital command value module VT SWKD --X/... see RE 2 Supply voltage Nominal voltage VDC 2 WRE, Lower limiting value V 2 / 22 9 WR ) Upper limiting value V mplfier current I max.8.8 consumption Max. impulse current ) With osch Rexroth G control electronics 2) Due to the occuring surface temperature of the solenoid coils, the European Standards EN 6 and EN 982 must be taken into account! ) Separate der Note: F details regarding the environmental simulation test covering EMC (electro-magnetic compatibility), climate and mechanical loading see RE 29 0-U (declaration regarding environmental compatibility). RE 29 0/08.0 0/0.98 6/6 WR; WRE

7 Electrical connection, plug-in connects F type WR (without integrated control electronics not f version "J" = sea water resistant) Connection on component plug Connection on plug-in connect E E E E To amplifier To amplifier 27, 27, lug-in connect CECC F-HD08-G to DIN EN 7-80 and ISO 0 Solenoid a, colour grey Separate der under material no Ø22, Solenoid b, colour black Separate der under material no F type WRE (with integrated electronics and f version "J" = sea water resistant) F pin allocation, see block circuit diagram on page 8 lug-in connect to E DIN 6-F6-/g Separate der under material no (plastic version) 9 Ø6, Ø27 lug-in connect to E DIN 6-F6-/g, Separate der under material no (metal version) F C D E Ø29 70 Ø8 2 WR; WRE 7/6 RE 29 0/08.0 0/0.98

8 Integrated control electronics f type WRE in allocation of the component plug Integrated electronics (see below) C D E F Slot Signal Supply 2 VDC (9 to VDC) voltage GND C n.c. ) Differential D com. value (± V / to m) amplifier input E ref. potential F n.c. ) Com. value: ositive command value (0 to V 2 to m) at D and reference potential to E causes flow from to and to T. Negative command value (0 to V 2 to m) at D and reference potential to E causes flow from to and to T. F valves with a solenoid on side a (spool variant E and W) reference potential to E and positive command value at D (NS 6: to m and NS : 2 to m) causes flow from to and to T. Connection cable: Recommendation: up to 2 m cable length type LiYCY x 0.7 mm 2 up to 0 m cable length type LiYCY x.0 mm 2 External diameter 6. to mm Connect screen to E only on the supply side. ) Slots C and F must not be connected! lock circuit diagram/terminal allocation of the integrated control electronics Interface Integrated control electronics Valve Com. value Ref. potential D E Differential amplifier U U Ramp generat ) Summat Σ Output stage ) U I Output stage ) Low voltage detection 6) Step function generat Interlock U I Supply voltage 2V GND rotective conduct 2; ) E ower supply unit U U + U i 0 V U i 2) E is connected to the cooling body and the valve housing ) rotective conduct screwed to the valve housing and cover ) Ramp can be externally adjusted from 0 to 2, s; the same applies f T up and T down ) Output stages current regualted 6) Low voltage detection is not carried out f component type WRE -2X. ) RE 29 0/ /0.98 8/6 WR; WRE

9 Characteristic curves (measured with HL6 at C ± C) NS 6 7 L/min nominal flow at bar valve pressure differential L/min nominal flow at bar valve pressure differential / T / T 2 / T / T Command value in % Command value in % L/min nominal flow at bar valve pressure differential 0 0 / T / T Command value in % p = bar constant 2 p = bar constant p = bar constant p = 0 bar constant p = 0 bar constant p = Valve pressure differential (inlet pressure p minus load pressure p L and minus return pressure p T ) Characteristic curves (measured with HL6 at C ± C) NS L/min nominal flow at bar valve pressure differential 60 L/min nominal flow at bar valve pressure differential / T / T / T / T 2, Command value in % p = bar constant 2 p = bar constant p = bar constant p = 0 bar constant p = 0 bar constant p = Command value in % Valve pressure differential (inlet pressure p minus load pressure p L and minus return pressure p T ) WR; WRE 9/6 RE 29 0/0.00 0/0.98

10 Characteristic curves (measured with HL6 at C ± C) NS 6 Transient functions with stepped fm of electrical input signals Types WR and WRE Stroke in % Signal change in % Time in ms erfmance limit, nominal flow 7 L/min erfmance limit, nominal flow L/min / T / T 7 / T / T Valve pressure differential in bar Valve pressure differential in bar erfmance limit, nominal flow L/min 0 / T / T Valve pressure differential in bar 67 2 Command value = % 2 Command value = 0 % Command value = 60 % Command value= 70 % Command value = 80 % 6 Command value = 90 % 7 Command value = 0 % If the perfmance limits are exceeded then flow fces occur which lead to uncontrolled spool movements. RE 29 0/0.00 0/0.98 /6 WR; WRE

11 Characteristic curves (measured with HL6 at C ± C) NS Transient functions with stepped fm of electrical input signals Stroke in % Signal change in % Time in ms erfmance limit, nominal flow L/min Valve pressure differential in bar Command value = % 2 Command value = 0 % Command value = 60 % Command value = 70 % Command value = 80 % 6 Command value = 90 % 7 Command value = 0 % / T / T erfmance limit, nominal flow 60 L/min / T / T Valve pressure differential in bar If the perfmance limits are exceeded then flow fces occur which lead to uncontrolled spool movements WR; WRE /6 RE 29 0/0.00 0/0.98

12 Unit dimensions: NS 6 (Dimensions in mm) Type WR , a 2 b 7 66,, ,7 0,7, T 0,0/0mm R max Required surface finish of mating piece Valve housing 2 roptional solenoid "a" roptional solenoid "b". lug-in connect "", colour grey, separate der, see page 7.2 lug-in connect "", colour black, separate der, see page 7 Name plate 6 R-ring 9.8 x. x.78 (pts,,, T) 7 lug f valves with one solenoid (2 switched positions, versions E W) 8 Space required to remove the plug-in connect 9 Machined valve mounting surface, position of the pts to DIN 2 fm, ISO and CETO-R 2 H Subplates to catalogue sheet RE 02 and valve fixing screws have to be dered separately. Subplates: G/0 (G/) G2/0 (G/8) G02/0 (G/2) Valve fixing screws: off M x 0 DIN 92-.9; M = 8.9 Nm RE 29 0/.99 0/0.98 2/6 WR; WRE

13 Unit dimensions: NS 6 (Dimensions in mm) Types WRE / K/ V , a 2 b 7, 66, ,7 0,7 72, T 0,0/0mm R max Required surface finish of mating piece Valve housing 2 roptional solenoid "a" roptional solenoid "b" lug-in connect to E DIN 6-F6-/g, separate der, see page 7 Name plate 6 R-ring 9.8 x. x.78 (pts,,, T) 7 lug f valves with one solenoid (2 switched positions, versions E W) 8 Integrated control electronics 9 Space required f the connection cable and to remove the plug-in connect Machined valve mounting surface, position of the pts to DIN 2 fm, ISO and CETO-R 2 H Subplates to catalogue sheet RE 02 and valve fixing screws have to be dered separately. Subplates: G/0 (G/) G2/0 (G/8) G02/0 (G/2) Valve fixing screws: off M x 0 DIN M = 8.9 Nm WR; WRE /6 RE 29 0/0.00 0/0.98

14 Unit dimensions: NS (Dimensions in mm) Type WR a b 82, , ,0/0mm R max 72 6 T T Required surface finish of mating piece Valve housing 2 roptional solenoid "a" roptional solenoid "b". lug-in connect "", colour grey, separate der, see page 7.2 lug-in connect "", colour black, separate der, see page 7 Name plate 6 Valve bleed screw Note: The valves are bled befe delivery. 7 R-ring.0 x.6 x 2.0 (pts,,, T) 8 lug f valves with one solenoid (2 switched positions, versions E W) 9 Space required to remove the plug-in connect Machined valve mounting surface, position of the pts to DIN 2 fm, ISO and CETO-R 2 H Subplates to catalogue sheet RE 0 and valve fixing screws have to be dered separately. Subplates: G66/0 (G/8) G67/0 (G/2) G/0 (G/) valve fixing screws: off M6 x DIN 92-.9; M =. Nm RE 29 0/.99 0/0.98 /6 WR; WRE

15 Unit dimensions: NS (Dimensions in mm) Type WRE a b, , ,0/0mm R max 72 6 T T Required surface finish of mating piece Valve housing 2 roptional solenoid "a" roptional solenoid "b" lug-in connect to E DIN 6-F6-/g, separate der, see page 7 Name plate 6 Vavle bleed screw Note: The valves are bled befe delivery. 7 R-ring.0 x.6 x 2.0 (pts,,, T) 8 Cover f valves with one solenoid (2 switched positions, versions E W) 9 Integrated valve electronics Space required f the connection cable and to remove the plug-in connect Machined valve mounting surface, position of the pts to DIN 2 fm, ISO and CETO-R 2 H Subplates to catalogue sheet RE 0 and valve fixing screws have to be dered separately. Subplates: G66/0 (G/8) G67/0 (G/2) G/0 (G/) Valve fixing screws: off M6 x DIN M =. Nm WR; WRE /6 RE 29 0/0.00 0/0.98

16 Notes osch Rexroth G Industrial Hydraulics D-978 Lohr am Main Zum Eisengießer D-9786 Lohr am Main Telefon / 8-0 Telefax / Telex documentation@boschrexroth.de Internet osch Rexroth Limited Cromwell Road, St Neots, Cambs, E9 2ES Tel: 0 80/ Fax: 0 80/ info@rexroth.co.uk The data specified above only serve to describe the product. No statements concerning a certain condition suitability f a certain application can be derived from our infmation. It must be remembered that our products are subject to a natural process of wear and ageing. RE 29 0/08.0 0/0.98 6/6 WR; WRE