4/3-4/2 Directional valve elements L8_81 (ED4-P1) with or without LS connections. RE Edition: Replaces:

Transcription

1 4/ - 4/ Directionl vlve elements L8_81 with proportionl (ED4-1) control nd with or without LS connections L8_81 (ED4-1) RE Edition: 9.18 Replces: Size Series Mximum operting pressure r (4 psi) Mximum flow 4 l/min (. gpm) ort connections G /8 - G 1/ - SE - SE8 Generl specifictions Vlve element with direct proportionl control of spool. Control spool operted y solenoid with removle coils. In the de-energized condition, the control spool is held in the centrl position y return springs. Wet pin proportionl tues for DC coils, with push rod for mechnicl override; nickel plted surfce. Mnul override (push-utton or screw type) ville s option. lug-in connectors ville: EN (Ws DIN 4) nd D4- (Deutsch). Contents Ordering detils Functionl description echnicl dt 4 Chrcteristic curves Externl dimensions nd fittings Electric connection 8 Electronic feed regultor 9 RE 181-1/9.18, osch Rexroth G

2 L8_81 (ED4-1) 4/ - 4/ Directionl vlve elements Ordering detils Ordering detils L 8 81 Fmily 1 Directionl Vlve elements ED L ype Size proportionl 8 Configurtion Stndrd With Lod Sensing control 4 Coil type 4 G4 81 Spool vrints 4/ operted oth sides nd ; closed in neutrl 4/ operted on side only; closed in neutrl 4/ operted on side only; closed in neutrl 4 4/ operted on oth sides nd ; nd to in neutrl E 4/ operted on side only; nd to in neutrl E 4/ operted on side only; nd to in neutrl E4 Flow pttern oth meter in nd out S Meter in I Nominl flow 1) 7 l/min (.4 gpm) l/min (.8 gpm) 4 l/min (7.9 gpm) Voltge supply Without coil 1V DC O 4V DC OC Electric connections 9 Without coils With coils, without mting connector DIN EN ) With coils, without mting connector verticl mp-junior With coils, without mting connector D4-7 orts G /8 DIN 8 9/1-18 UNF - (SE) 1 G 1/ DIN 8 /4-1 UNF - (SE8) Options 11 No options No code ush-utton type mnul override Screw type mnul override F wist type mnul override (18 ) Red push-utton type mnul override R lck push-utton type mnul override N Lever type mnul override ) Symols LS Spool vrints =S =S =4S =EI =E4I =ES =EI = = 4 =ES =E4S In neutrl position, the vlves cross section re s follows: E_I % of nominl cross section. E_S % of nominl cross section. = ville = Not ville 1) With p ( > ) r (14 psi), corresponding pprox. to p >, r (7 psi). ) For connectors ordering code see dt sheet RE ) Ech different option for the type of mnul override chosen implies specific ordering code (refer to pge ). osch Rexroth G, RE 181-1/9.18

3 4/ - 4/ Directionl vlve elements L8_81 (ED4-1) Functionl description Functionl description he sndwich plte design directionl vlve elements L881 re compct direct operted proportionl solenoid vlves which control the strt, the stop, the direction nd the quntity of the oil flow. hese elements siclly consist of stckle housing (1) with control spool (), one or two solenoids (), nd one or two return springs (4). Energized y n electronic feed regultor, ech solenoid () displces the control spool () from its neutrl-centrl position proportionlly to the current received; regulted oil flow to, or to, is chieved. Once the solenoid is de-energized, the return spring (4) pushes the spool thrust wsher () ck ginst the housing nd the spool returns in its neutrl-centrl position. Ech coil () is fstened to the solenoid tue y ring nut (). pin (7) llows to push the spool () in emergency conditions, when the solenoid cnnot e energized, like in cse of voltge shortge. RE 181-1/9.18, osch Rexroth G

4 4 L8_81 (ED4-1) 4/ - 4/ Directionl vlve elements echnicl dt echnicl dt Generl Vlve element with solenoids kg (ls). (4.8) Vlve element with 1 solenoid kg (ls) 1.7 (.7) mient emperture C ( F) ( ) (NR sels) MFd yers see RE 18-1 Hydrulic Mximum pressure t r (psi) (4) Mximum pressure t r (psi) () Mximum inlet flow l/min (gpm) 4 (.) Nominl flow with D > = r (14 psi) l/min (gpm),,, 4 (.4,.8, 7.9,.) Hydrulic fluid Generl properties: it must hve physicl luricting nd chemicl properties suitle for use in hydrulic systems such s, for exmple: Minerl oil sed hydrulic fluids HL (DIN 14 prt 1). Minerl oil sed hydrulic fluids HL (DIN 14 prt ). For use of environmentlly cceptle fluids (vegetle or polyglycol se) plese consult us. Fluid emperture C ( F) (-...+1) (NR sels) ermissile degree of fluid contmintion ISO 47: β x 7 X=1...1 ISO 44: clss /18/1 NS 18: clss 9 Viscosity rnge mm /s...8 (optiml...4) Electricl Voltge type WM 1 Hz Voltge tolernce (nominl voltge) % Duty Continuous, with mient temperture 9 C (194 F) Coil wire temperture not to e exceeded C ( F) 18 () Insultion clss H Complince with Low Voltge Directive LVD 7//EC (/9/EC), 4/8/EC Coil weight kg (ls). (.79) Voltge V 1 4 Nominl % current Coil resistnce (nominl t C (8 F)) - Cold vlue Ω. 7. Note For pplictions with different specifictions consult us Code Voltge [V] Connector type Coil description Mrking Coil Mt no. =O 1 1 DC EN (Ex. DIN 4) G4 1-4 K4 1 DC R918 =O 1 DC M JUNIOR G4-4 C4 1 DC R98 =O 7 1 DC DEUSCH D 4- G4 7-4 K4 1 DC R91748 =OC 1 4 DC EN (Ex. DIN 4) G4 1-4 K4 4 DC R9174 =OC 4 DC M JUNIOR G4-4 C4 4 DC R98 =OC 7 4 DC DEUSCH D 4- G4 7-4 K4 4 DC R91747 osch Rexroth G, RE 181-1/9.18

5 4/ - 4/ Directionl vlve elements L8_81 (ED4-1) Chrcteristic curves Chrcteristic curves Nominl Flow = % 7% % r 4 psi ressure Δp % % of mximum control current Δp= 14psi Δp= r Nominl Flow = % 4 1 7% 1 4% r 4 psi ressure Δp % % of mximum control current Δp= 14psi Δp= r Nominl Flow = % 4 7% 4% r 4 psi ressure Δp % % of mximum control current Δp= 14psi Δp= r RE 181-1/9.18, osch Rexroth G

6 L8_81 (ED4-1) 4/ - 4/ Directionl vlve elements Externl dimensions nd fittings Dimensions [mm (inches)] Externl dimensions nd fittings 1 Solenoid tue Ø mm (.9 inch). Ring nut for coil locking (Ø mm); torque 7 Nm (4.4. ft-l). 4 Flnge specifictions for coupling to ED intermedite elements with ports G /8 nd SE. For tie rod nd tightening torque informtion see dt sheet RE Clernce needed for connector removl. 7 nd ports. 8 Identifiction lel. 9 Optionl push-utton mnul override, type, for spool opening: it is pressure stuck to the ring nut for coil locking. Mt no. R944. Optionl screw type mnul override, F type, for spool opening: it is screwed (torque -7 (4.4-. ft-l)) to the tue s replcement of the coil ring nut. Mt no. R Optionl push-utton mnul override N (lck) nd R (red) type, for spool opening. It is screwed (torque -7Nm(4.4-. ftl)) to the tue s replcement of the coil ring nut. Mt no. R9488(lck) - R9489 (red). 1 Optionl twist type mnul override, type, for spool opening nd locking in the energised position. It is screwed (torque -7Nm (44-. ft-l)) to the tue s replcement of the coil ring nut. Mt no. R Four threded holes M for fitting secondry flngele element (only for elements with ports G /8 nd SE ). olts M with recommended strength clss DIN 8.8: torque Nm (.-4.4 ft-l). 14 Flnge specifictions for coupling to ED intermedite elements with ports G 1/ nd SE 8. osch Rexroth G, RE 181-1/9.18

7 Dimensions [mm (inches)] 4/ - 4/ Directionl vlve elements L8_81 (ED4-1) Externl dimensions nd fittings 7 1 Ordering Detils: H (if fitted to side ) or H (if fitted to side ) Ordering Detils: V (if fitted to side ) or V (if fitted to side ) Ordering Detils: H1 (if fitted to side ) or H9 (if fitted to side ) 4 Ordering Detils: V1 (if fitted to side ) or V9 (if fitted to side ) Ordering Detils: X (if fitted to side ) or X (if fitted to side ) Ordering Detils: X1 (if fitted to side ) or X9 (if fitted to side ) RE 181-1/9.18, osch Rexroth G

8 8 L8_81 (ED4-1) 4/ - 4/ Directionl vlve elements Electric connection Dimensions [mm (inches)] Electric connection 1 rotection clss: I when connector with sel is properly screwed down. rotection clss: I with femle connector properly fitted (see drwing). 7 rotection clss: I 9 K with femle connector properly fitted. osch Rexroth G, RE 181-1/9.18

9 M E RE 1 4 V D C Dimensions [mm (inches)] 4/ - 4/ Directionl vlve elements L8_81 (ED4-1) Electronic feed regultor 9 Electronic feed regultor Supply: yellow LED, lit up with power ON. 1 SU LY CV 4 H OFF SE RM U R M DOW N FULL LOD CUR R E N Off Set: minimum current djustment. djust solenoid current so tht the desired minimum vlue is otined. Clockwise rottion increses current. Rmp up: Rmping up time djustment. Rmp down: Rmping down time djustment. For longer rmping times, turn potentiometers clockwise; for shorter rmping times, turn the potentiometers counterclockwise. Full lod current: Mximum current djustment. djust solenoid current so tht the desired mximum vlue is otined (up to ). Clockwise rottion increses current. Frequency djustment: it is possile to set the WM frequency otining the desired control sensitivity. fter removing the externl plstic cover, turn the djusting screw; clockwise rottion increses frequency from to Hz. Electronic feed regultor Regultor ordering code Supply voltge Control Signl Mx. output current Minimum output current Rmp djustment up/down WM Frequency djustment (pre-set 1 Hz) mient operting temperture Weight Electromgnetic comptiility rotection clss with connector nd sel correctly fitted nd properly screwed down. otentiometer resistnce R99 1- VDC - VDC s... Hz C ( F).1 kg (.4 ls) EN81-1/EN-4-//4// I (DIN4 prt 9)... κ Ω RE 181-1/9.18, osch Rexroth G

10 L8_81 (ED4-1) 4/ - 4/ Directionl vlve elements osch Rexroth Oil Control S.p.. Oleodinmic LC Division Vi rtiginle Sedrio, 1 4 Vezzno sul Crostolo Reggio Emili - Itly el Fx +9 / 1 8 compct-hydrulics-cdv@oschrexroth.com his document, s well s the dt, specifictions nd other informtion set forth in it, re the exclusive property of osch Rexroth Oil Control S.p... It my not e reproduced or given to third prties without its consent. he dt specified ove only serve to descrie the product. No sttements concerning certin condition or suitility for certin ppliction cn e derived from our informtion. he informtion given does not relese the user from the oligtion of own judgment nd verifiction. It must e rememered tht our products re suject to nturl process of wer nd ging. Suject to chnge. osch Rexroth G, RE 181-1/9.18