Directional spool valves type WEH32. electro-hydraulically operated

Transcription

1 Directionl spool vlve type WEH2 electro-hydruliclly operted NS2 up to 5 M up to 11 D SHEE - SERVICE MNU NUL dm /min WK LICION Directionl spool vlves type WEH2 2 electrohydruliclly operted re intended for chnge in direction of fluid flow in system nd thus it llows to chnge direction of movement of receiver - mostly piston rod of cylinder or hydrulic motor s well to use functions: on nd off. hese directionl spool vlves re used for suplte mounting in ny position in hydrulic system. he directionl spool vlve type WEH2 2 is complied with the regultions of directive 26/95/WE for the following voltges: 5 25 V for C V for DC DESCRIION OF OERION 4WEH2E 52/G24NEZ Min ore nd nnulr ports,,, re mde in the housing (1) nd connected to its suplte connection. Directionl vlve is switched y shifting the spool (2) into one end position. Vrious control functions re dependent on the spool (2) which ffects the chnge in configurtion of connections mong ports,,, in the housing (1). he spool (2) is shifted from its neutrl position y ffecting pressure of hydrulic fluid supplied vi pilot vlve (4) into one chmer of cps (). he pilot vlve (4) type WE6 is operted y mens of solenoids (5). In cse of filure, the pilot vlve (4) my e shifted mnully y mens of mnul overrides (6) version 4WEH2 / N. he spool (2) is centered in neutrl position y mens of springs (7). ype WEH2-1 - WK

2 DESCRIION OF OERION 4WEH2E 52/...S.S... 4WEH2E 52/...S Directionl spool vlves type 4WEH2 5 my e provided with the pilot choke djustment (8) - vlve type Z2FS6 to dt sheet WK s well s spool stroke limiter (9). ccessories my e mounted depending on version of directionl vlve like given on pges ECHNICL D Hydrulic fluidf Hydrulic fluid minerl oil Required filtr f ltrt tion up to t 16 µm Recommended filtrtion up to 1 µm Nominl fluid viscosity 2 o 7 mm /s t temperture 55 C Viscosity rnge 2 2,8 up to 8 mm /s recommended 4 o C up to 55 C Fluid temperture rnge (in tnk) mx o -2 C up to +7 C mient temperture rnge - 2 C up to +5 C Mx opert ting pressure orts,, version H-4 WEH /.. /... 5 M version 4 WEH / M ort pilot fluid return - - externl 25 M pilot fluid return - intern ternl Mx x controc trol l pressure 21 M 25 M Min controc trol l pressure ilot fluid supply - extern ernl -position directionl vlve,8 M 2-position directionl vlve spring positioned 1, M ilot fluid supply - intern ternl (when pre-lod vlve pplied or when flow rte is suitly high) versions 4 WEH 2... with spools G,H,F,S,,45 M versions H-4 WEH /... /...D1... with spools G,H,F,S,,7 M WK ype WEH2

3 ECHNICL D Fluid volume required to t operte the t vlve ve -position spring centered directionl vlve 5,5 cm -position hydruliclly centered directionl vlve from (neutrl) to operted position 17,25 cm from (neutrl) to operted position 5,5 cm from operted position to (neutrl) position 18,1 cm from operted position to (neutrl) position 17,25 cm 2-position directionl spool vlve 7,7 cm ot tl l time t of f spool shif ifti ting from neutr trl l to t shif ifted posit ition -position (spring centered) directionl vlve t pilot pressure p st = 5 M 9 ms p st =15 M 75 ms p st =25 M 65 ms 2-position (spring positioned) directionl vlve t pilot pressure p st = 5 M 15 ms p st = 15 M 115 ms p st = 25 M 15 ms ot tl l time t of f spool shif ifti ting from shif ifted to neutr trl posit ition -position (spring centered) directionl vlve t pilot pressure p st = 5; 15; 25 M 95 ms 2-position (spring positioned) directionl vlve t pilot pressure p st = 5 M 15ms p st = 15 M 85 ms p st = 25 M 75 ms Flow section in centr trl l positp ition spool (schemes on pge 5) flow section Q 16 % nominl flow ilot t vlvev ve ype of pilot vlve for -position directionl vlve (spring centered) 4WE6 J... for 2-position directionl vlve (spring positioned) with spools C, D, K, Z 4WE6 D... DC Nom ominl supp upply volt ltge for f sole lenoid ids 12V 24V 11V Supply voltge tolernce ±1% ower requirement (DC) W Insult tion I 65 o emperture of solenoid coil mx 15 C Weight mx 51 kg SSEML ND LICION REQUIREMENS V 16 % nominl flow W % nominl flow with spool 4WE6... C (plug-in connector with rectifier) 2V - 5Hz 11V - 5Hz 1. Only vlve working properly nd suitly instlled my e connected to n electric system. Only skilled workers re llowed to connect nd disconnect electric system. 2. Ground connection ( ) must e connected with protective erth wire ( E ) in supply system ccording to pproprite instructions.. It is foridden to pply directionl spool vlve if the supply cle in the glnd of plug-in in- connector is not properly tightened. 4. It is foridden to pply directionl spool vlve if the plug-in in-connector is not proper operly tightened to the solenoid socket nd is not secured y screwing olt tightly tly. 5. Due to heting solenoid coils, directionl spool vlves should e plced in order to eliminte the possiility of incidentl touch while using, or, they should e equipped with the coil covers (in ccordnce with the Europen stndrds N - EN ISO nd N - EN 982). ype WEH2 - - WK

4 SCHEMES Simp implif ified ied nd detiled hydrulic schemes for f -p -posit ition directd irectionl vlves ves wit ith vr rious s pilotp supp upply () nd pilot p t drin () -position directionl vlves with spring centered spool t position in min vlve nd pilot vlve intern ternl supply ; intern ernl drin version...4weh2.../...e..,, extern ernl supply ; intern ernl drin version...4weh2.../...,, intern ernl supply ; extern ernl drin version...4weh2.../...e. E... extern ernl supply ; extern ernl drin version...4weh2.../...,,,, WK ype WEH2

5 SCHEMES Simp implif ified ied nd detiled hydrulic schemes for f 2-p -posit ition directd irectionl vlves ves wit ith vr rious s pilotp supp upply () nd pilot p t drin () 2-position min directionl vlves with spools C, D, K, Z; spool in min vlve nd pilot vlve spring positioned 2-position min directionl vlves with spool spool in min vlve nd pilot vlve spring positioned intern ternl supply ; intern ernl drin version...4weh2.../...e.. intern ternl supply ; intern ernl drin version...4weh2.../...e..,,,, extern ernl supply ; intern ernl drin version...4weh2.../...,, extern ernl supply ; intern ernl drin version...4weh2.../...,, intern ernl supply ; extern ernl drin version...4weh2.../...e. E... intern ernl supply ; extern ernl drin version...4weh2.../...e. E...,,,, extern ernl supply ; extern ernl drin version...4weh2.../...,, extern ernl supply ; extern ernl drin version...4weh2.../...,, ype WEH2-5 - WK

6 SCHEMES Grp phic sym ymols for spools -p -posit ition 2-p -posit ition working nd indirect positions working positions E F G H J working nd indirect positions working positions C D K Z L M Q R S U V W WK ype WEH2

7 OVERLL ND CONNECION DIMENSIONS -position versions, spring centered...4weh2...5/...s...d , G11 7 S (95) O6-2 pins O22-6 holes O - 6 spotfces 159 L 2 (min) ,5 M2 depth 5-6 holes r,1/1 mm,6 O1 - holes (,,L) O8 - holes (,,)O4 () O6,5 depth 8 2 holes 2,5 79, 5 114,5 19,5 28,5 15 L 41, ,5 114,5 147,5 168,5 2 19,5 257 (min) p -positi sition min directionl vl lve (spring centered - spool schemes: E, F, G, H, J, L, M,, Q, R, U, V, W - on pge 5) 2 - -p -positi sition directionl vl lve (pilot vlve) type WE (spool types ccording to technicl dt on pge ) - Solenoid 4 - Solenoid 5 - lug-in-connector - ISO 44 (DIN ) 6 - lug-in-connector - ISO 44 (DIN ) 7 - Mnul override 8 - ilot choke djustment (optionl) 9 - ressure rtio vlve (optionl) 1 - Seling ring o-ring 42 2 x 2-4 pcs/kit (,,, ) 11 - Seling ring o-ring 12 2 x 2 - pcs/kit (,, L) 12 - Dimension for electricl connection for DC 1 - Dimension for electricl connection for C (plug-in-connector with rectifier) 14 - orting pttern - configurtion of surfce holes in suplte in ccordnce with the following stndrds: CEO O R 121H ISO identified y ISO fixing screws in ccordnce with N- N-EN ISO 4762 M2 x pcs/kit tightening torque Md = 58 Nm 15 - Suplte surfce required ype WEH2-7 - WK

8 OVERLL ND CONNECION DIMENSIONS 2-position versions, spring positioned...4weh2...5/...s...d1... G11 5 S (95) , O6-2 pins O22-6 holes O - 6 spotfces L positi ition min directionl vlve ve (spring positioned - spool schemes: C, D, K, Z, - on pge 5) 2-2-positi ition directionl vlve ve (pilot vlve) type WE6 E6... (spool types ccording to technicl dt on pge ) - Solenoid 4 - Solenoid - only for directionl vlve with spool (version 4WEH2...) 5 - lug-in-connector - ISO 44 (DIN ) 6 - lug-in-connector - ISO 44 (DIN ) only for version like item Mnul override 8 - ilot choke djustment (optionl) 9 - ressure rtio vlve (optionl) 1 - Seling ring o-ring 42 x 2-4 pcs/kit (,,, ) 11 - Seling ring o-ring 12 x 2 - pcs/kit (,, L) 12 - Dimension for directionl vlve with spools: C, D, K, Z 1 - Dimension for directionl vlve with spool 14 - Dimension for electricl connection for DC 15 - Dimension for electricl connection for C (plug-in-connector with rectifier) 16 - orting pttern - configurtion of surfce holes in suplte in ccordnce with the following stndrds: CEO R H ISO identified y ISO fixing screws in ccordnce with N-E -EN ISO I 4762 M2 x pcs/kit tightening torque Md = 58 Nm 17 - Suplte surfce required 2 (min) ,5 114,5 19,5 O1 - holes (,,L) O8 - holes (,,)O4 () O6,5 depth 8 2 holes 2, , 5 28,5 M2 depth 5-6 holes r,1/1 mm,6 17 L 41, ,5 114,5 147,5 168,5 2 19,5 257 (min) 1 16 WK ype WEH2

9 CCESSORIES FOR SNDRD VERSIONS ilot choke djustment versions:...4weh2...5/...s weh2...5/...s2... Directionl spool vlves type 4WEH2 2 my e optionlly provided with pilot choke djustment (throttle check vlve type Z2FS6 ccording to dt sheet WK 45 22) which llows to djust switching time of directionl spool vlve. he chnge of djustment method of switching time (flow throttling): on inlet - version...4weh2 5/ S... on outlet - version...4weh2...5/ S2... is mde while mounting y rotting the pilot choke djustment () y 18 degrees round its longitudinl xis. Rottion of the djusting screw (5) clockwise increses nd counterclockwise decreses switching time of the vlve. he pilot choke djustment () nd the pilot vlve (2) must e fixed y mens of screws M5 x pcs/kit in ccordnce with N - EN ISO 4762 with tightening torque of Md = 5 Nm. ressure rtio vlve versions: H- 4WEH2...5/...E...D1... H- 4WEH2...5/...E...D1... When pilot pressure exceeds 25 M, the directionl vlves type WEH WEH2 2 must e equipped with pressure rtio vlve (6). It cuses the pilot pressure is reduced in the rtio 1:,66 = 1,515. Directionl vlves in the following versions: H - 4WEH2.../...E E...; H - 4WEH2.../...E... re provided with the pressure rtio vlve (6). he pressure rtio vlve (6), pilot choke djustment () nd pilot vlve (2) must e fixed y mens of screws M5 x pcs/kit in ccordnce with N - EN ISO 4762 with tightening torque of Md = 5 Nm. H-4WEH2...5/...E S...D1... H-4WEH2...5/...E S...D WEH2....5/...S WEH2...5/...S H - 4WEH2...5/...E...D1... H - 4WEH2...5/...E...D Min vlve 2 - ilot vlve - ilot choke djustment with djustment of switching time on outlet 4 - ssemly method of pilot choke djustment with djustment of switching time on intlet 5 - djusting screw 6 - ressure rtio vlve ype WEH2-9 - WK

10 CCESSORIES FOR SNDRD VERSIONS ilot oil supply nd pilot oil drin ilot oil supply externl pilot oil drin externl version 4WEH2 5/ he pilot oil supply is sourced externlly vi chnnel from seprte circuit. he pilot oil drin is led externlly vi chnnel to tnk. ilot oil supply internl pilot oil drin externl version 4WEH2 5/ E he pilot oil supply is sourced internlly from chnnel of the min vlve. he pilot oil drin is led externlly vi chnnel to tnk. ort in the suplte is plugged. ilot oil supply internl pilot oil drin internl version 4WEH2 5/ E he pilot oil supply is sourced internlly from chnnel of the min vlve. he pilot oil drin is led internlly vi chnnel to tnk. orts nd in the suplte re plugged. ilot oil supply externl pilot oil drin internl version 4WEH2 5/ he pilot oil supply is sourced internlly from chnnel of the min vlve. he pilot oil drin is led internlly vi chnnel to tnk. orts nd in the suplte re plugged ilot oil supply externl: () - plugged internl: () - open ilot oil drin externl: (4) - plugged internl: (4) - open 1 - Min vlve 2 - ilot vlve - lug M6-8,8 (S) - pilot oil supply () 4 - lug M6-8,8 (S) - pilot oil drin () hrottle insert versions:...4weh2...5/ Directionl vlves type WEH2 2 5 my e equipped with throttle insert () in port in pilot vlve (2) which llows to dely switching time of the min vlve. 1 - Min vlve ody 2 - port of the pilot vlve - hrottle insert 2 1 WK ype WEH2

11 CCESSORIES FOR SNDRD VERSIONS re-lod vlve versions:...4weh2...5/...4, 4, WEH2...5/ In vlves with positions of spool with pressureless y-pss nd internl pilot oil supply, pre-lod vlve (2) must e instlled in the chnnel of the min vlve (1) to uild up the minimum pilot pressure. he pressure difference of the pre-lod vlve (2) must e dded to the pressure difference of the min vlve (1) - see chrcteristic curves in order to determine the ctul vlue. Crcking pressure for pre-lod vlves: vlve type 4,5 -,45 M vlve type 7 -,7 M For directionl vlves with fixed pressure rtio vlve versions:...4weh /...d...the pre-lod vlve 7 must e pplied. 1 - chnnel of the min vlve 2 - re-lod vlve - Suplte 1 2 erform ormnce curc urves for pre-lod vlves ves 2 o mesured t viscosity ν = 41 mm /s nd temperture t = 5 C pre-lod vlve type 4, 4,5 pre-lod vlve type 7 1,2 1,2 p (M) 1,,8,6,4 p (M) 1,,8,6,4,2, Q (dm / min) Q (dm / min) OIONL CCESSORIES Stroke limiter Stroke limiter of the spool my e mounted: stroke limiter on vlve sides nd (-position vlve, spring centered) version...4weh2...5/ stroke limiter on vlve side (2-position vlve - spools: C, D, K, Z) version...4weh2...5/ stroke limiter on vlve side (2-position vlve - spool: ) version...4weh2...5/ djustment of the stroke of the min spool is y rotting the pin () nd securing with locknut (4). Rotting the pin () clockwise reduces the stroke of the min spool (2). While djusting the stroke the control chmer must e t zero pressure....4weh2...5/ Stroke limiter ody (on vlve side ) 2 - Spool of the min vlve - in 4 - Locknut 1 4 ype WEH WK

12 OVERLL DIMENSIONS OF DIRECIONL VLVE WIH OIONL CCESSORIES Versions with stroke limiter -p -posit ition direct d irectionl vlves ves wit ith the min m spool spring centered Stroke limiter my e mounted: on vlve sides nd - version...4weh on vlve side - version...4weh on vlve side - version...4weh p -position direc irection nl vl lves with the mi in spool sprin pring positione ned - spools: C, D, K, Z Stroke limiter my e mounted: on vlve side - version...4weh weh weh p -position direc irection nl vl lves with the mi in spool sprin pring positione ned - spool Stroke limiter my e mounted: on vlve side - version...4weh weh WK ype WEH2

13 ERFORMNCE CURVES mesured t viscosity ν = 41 mm /s nd temperture t = 5 C ressure resist stnce curc urves 2 o erformnce curves p (Q) for directionl vlves type 4WEH2... with spools E nd R erformnce curves p (Q) for directionl vlves type 4WEH2... with spools: F,H,J,L,M,Q,S,U,V,W,C,D,K,Z, p (M) 1,8 1,6 1,4 1,2 1,,8,6,4,2 E;R;W; R p (M) 1,8 1,6 1,4 1,2 1,,8,6,4,2 S J;L;M;Q;U; V;F;H;C;D;K;Z; Q (dm / min) Q (dm / min) erformnce curves p (Q) for directionl vlves type 4WEH2... with spools G nd p (M) 1,8 1,6 1,4 1,2 1,,8,6,4,2 G;; Q (dm / min) Flow lim imit its spool type E, J, L, M, Q, R, U, V, W, C, D, K, Z, F, G, H, S, pressure p [M] flow rte Q [dm / min] NOE: ove flow limits re relted to stndrd ppliction of 4-wy directionl control vlve using two flow directions, e.g. to nd simultneously to. When 4-wy directionl control vlve with only one flow direction is used, e.g. to ( plugged) or to ( plugged), then the ctul flow limits re considerly lower. ype WEH2-1 - WK

14 HOW O ORDER 4 WEH Version working pressure up to 28 M = no designtion working pressure up to 5 M = H Numer of service ports 4-wy = 4 Nominl size (NS) NS2 = 2 ype of the min spool spool schemes - ccording to pge 6 Series numer (5-59) - instlltion nd connection dimensions unchnged = 5 series 52 = 52 Supply voltge for solenoids t pilot vlve 12 V DC = G V DC = G V DC = G V C 5 Hz (plug-in-connector with rectifier) = W 11 R 2 V C 5 Hz (plug-in-connector with rectifier) = W 2 R Mnul override solenoids without mnul override solenoids with mnul override ilot oil supply nd pilot oil drin externl pilot oil supply, externl pilot oil drin internl pilot oil supply, externl pilot oil drin internl pilot oil supply, internl pilot oil drin externl pilot oil supply, internl pilot oil drin Switching time djustment without switching time djustment switching time djustment s meter-in control switching time djustment s meter-out control = no designtion = N = no designtion = E = E = = no designtion = S = S2 Electricl connection plug-in-connector ISO 44 type without LED = Z4 plug-in-connector ISO 44 type with LED = Z4L WK ype WEH2

15 HOW O ORDER * Further requirements in cler text (to e greed with the mnufcturer) Seling NR (for fluids on minerl oil se) FKM (for fluids on phosphte ester se) = no designtion = V ressure rtio vlve without pressure rtio vlve = no designtion with pressure rtio vlve = D1 re-lod vlve without pre-lod vlve = no designtion pre-lod vlve with crcking pressure,45 M = 4,5 pre-lod vlve with crcking pressure,7 M = 7 hrottle insert in port of the pilot vlve without throttle insert = no designtion throttle insert φ,8 = 8 throttle insert φ 1, = 1 throttle insert φ 1,2 = 12 ccessories without ccessories = no designtion stroke limiter on vlve sides nd = 1 stroke limiter on vlve side = 11 stroke limiter on vlve side = 12 NOES: he directionl spool vlve should e ordered ccording to the ove coding. he symols in old re preferred vers ions in short delivery time. t Coding exmple: H- 4 WEH2 E 52/G24 N E Z4 D1 ype WEH WK

16 EMLE OF LICION IN HDRULIC SSEM 4WEH2 J... M SULES ND FIING SCREWS Supltes should e ordered ccording to suplte symols, given elow, tking into ccount the size of threded connections. Suplte symols: G157/1 - threded connections,,, - G 1 1/2,,L - G/8 G157/2 - threded connections,,, - M48 x 2,,L - M18 x 1,5 Supltes nd fixing screws in ccordnce with N - EN ISO M2 x 8-1,9-6 pcs/kit must e ordered seprtely. ightening torque for screws Md = 58 Nm NOE: Suplte symol in old is the preferred version ville in short delivery time. ONR Wdowice S.. ul. Wojsk olskiego Wdowice tel fx WK ype WEH2