RA / /3, 4/2 and 3/2-Way Directional Valves Model.WE 10.../.D, Series 3X with Wet Pin DC Solenoids. Functional description, section

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1 4/3, 4/2 and 3/2-Way Directional Valves Model.WE.../.D, Series 3X with Wet in DC Solenoids Size (D )... 3 SI... 2 GM (2 ar) (8 L/min) RA 23 37/6.98 Replaces: 2.96 Features: Direct solenoid operated directional spool valve, Mounts on standard ISO 44-, NFA 3..M R and ANSI 93.7 D interface Wet pin DC solenoids, Solenoids with central armature and removale coils, Coils may e easily replaced without engaging fluid, Individual electrical connections, see data sheet RA 8 2, Manual override standard. H/A 48/94 Model 4 WE E3X/ D G24N9Z4 Functional description, section A a Model 4WE E3X/DG24N9K4 A A Directional valves, type WE are solenoid operated directional spool valves. hey control the start, stop and direction of a flow. Directional valves consist of housing (), removale solenoid(s) (2), control spool (3) and return spring(s) (4). De-energized, spool (3) is held centered, or an offset position y return springs (4). Spool (3) is shifted y wet pin solenoid(s) (2). In order to ensure correct function, the solenoid armature must e filled with oil. (Cycling the valve will typically permit the armatures to fill). De-energizing solenoid (2), spool (3) returns to the original position y return springs (4). Manual override () permits movement of control spool (3) without electrical power. Orifice insert (Model 4WE..3X/.../..) An orifice insert is required if, flows are higher than the permitted pulished power limits of the valve. he orifice is installed in port. he force of solenoid (2) acts upon control spool (3) and moves it from an original position to the desired position. Solenoid engagement permits flow from to A and to or to and A to. O-ring 2 x 2 /6

2 Symols a a a a a a = A = C = D a a a a a a =.A =. ) Example: Spool E with spool position a Ordering code 4 WE EA-3X/DG 24 N9 Z4 = E ) = L = G = M = = H = Q = Y = J = U Ordering code WE 3X D * 3 service ports = 3 4 service ports = 4 Size (D ) = Spool type e.g. C, E, EA, E etc. For possile spool configurations, see aove Series 3 to 39 (3 to 39: externally interchangeale) = 3X Spring return = no code Wet pin solenoid with removale coil = D 24 V DC = G24 96/96 V DC solenoid, with integrated rectifier in plug connector, = W R for V or 22 V AC, independent of frequency = W 22 R (only possile with plug Z) (For further ordering data for other voltages, see page 3) with protected manual override = N9 Further details in clear text no code = NR seals; suitale for use with petroleum oil (HM, HL, HL) no code = without cartridge throttle 8 = throttle,.8 mm dia. = throttle,. mm dia. 2 = throttle,.2 mm dia. For use when flows exceed power limits of valve, installation in port Electrical connections to data sheet RA 8 2 Individual connection K4 ) = with protective cap, no connector Z4 = lug-in connector to DIN 43 6 Z = Large plug-in connector ZL = Large plug-in connector with lamp ) lug-in connectors (Z4, Z) have to e ordered seperately (see RA 8 ) 2/6

3 echnical data (For operation outside these parameters, please consult us!) General Installation position Optional Max. amient temperature F ( C) 22 () Weight Valve with solenoid ls (kg) 8.6 (3.9) Valve with 2 solenoids ls (kg) 9.7 (4.4) RA 23 37/6.98 Hydraulic Max. permissile ort A,, SI (ar) 3 (2) nominal pressure ort SI (ar) 3 (2) Max. flow GM (L/min) 2 (8) Hydraulic fluid etroleum oil (HM, HL, HL) Fluid temperature range F ( C) 22 to 76 ( 3 to 8) Viscosity range SUS (mm 2 /s) 3 to 23 (2.8 to ) Fluid cleanliness Maximum permissile degree of contamination of fluid to ISO 446 Class 8/. We therefore recommend a filter with a minimum retention rate of ß 7. Electrical Voltage type DC AC 2 ) Voltages ) V 2, 24, 96, 96, 22, 24 ower consumption W 3 Duty cycle continuous Operating time to ON ms 3 to ISO 643 OFF ms to 2 Operating frequency Cycles/hour Insulation Exceeds NEMA class Coil temperature F ( C) up to 32 () ) Other voltages on request 2 ) An AC voltage supply requires a rectifier, example WE 3X/DWRN9Z When making the electrical connection, the ground screw ( ) must e connected to earth ground. 3/6

4 p-q V Operating curves, measured at ν = 9 SUS (4 mm 2 /s) and t = 22 F ( C) Operating pressure in SI (ar) (7) (6) () (4) (3) (2) () Symols Direction of flow A A A, C, Q D, Y E G H J M L U Mid pos. A A G () (2) (3) (4) () (6) (7) (8) Flow in GM (L/min) erformance limits, measured at ν = 9 SUS (4 mm 2 /s) and t = 22 F ( C) ecause of silting, the shifting function of the valves is dependent upon filtration. o otain the maximum flow values shown, full filtration of 2 µm is recommended. he flow forces acting within the valve also influence performance. In 4-way valves, the data provided is for applications with 2 directions of flow (flow from to A and an equal, simultaneous return from to, see tale). If only one direction of flow is required, for example, when a 4- way valve has one port plugged, or unalanced flows from large rod cylinders, the permissile flow in critical cases can e consideraly lower. he A or spool (3-way) can e used as an approximation of the limited flow performance. erformance limits measured with solenoids at operating temperature, % undervoltage and without tank port pressure. (2) (2) (8) (6) 3 2 Curve Spool type Q, L, U 2 J 3 G 4 A, C, D, E, H, M, Y Operating pressure insi (ar) (4) (2) () (8) (6) (4) (2) () (2) (3) (4) () (6) (7) (8) Flow in GM (L/min) 4/6

5 Unit dimensions: dimensions in inches (millimeters) RA 23 37/ (9) 2.26 (4).728 (8.) 2.7 (7) A A ightening torque (typical) 2 in-ls + 7 in-ls (6 Nm + 2 Nm) ().6 () A ø.433 (ø) 4.94 (4) N 4.2 (8) ø.29 (6.6).8 (3).7 (4) (69) (2.) (79.) (87) 6.6 (4) (69) (66.) 3-position valve 2 2-position valve with solenoid (A, C, D, EA...) 3 2-position valve with solenoid (, Y, E...) 4. Solenoid a 4.2 Solenoid Space required to remove solenoid 6. lug-in connector Z4 (may e rotated in 9 increments) 6.2 Large plug-in connector Z and ZL (may e rotated in 9 increments) 7 Space required to remove plug 6.6 (66.) 8.98 (228) Manual override, N9 (manual operation only possile up to 72 SI ( ar) tank pressure), do not damage the manual override ore. Handkno part # RR may e used. 9 Nameplate R ring 3 mm x.6 mm x 2 mm (for valve with cartridge throttle: O ring 2 mm x 2 mm) Screw plug for valves with single solenoid 2 Additional port () may e used where valve is mounted on suitaly drilled manifold..4/4. in./ mm 32 (R max 4) Required surface finish of interface when mounting the valve without our suplate 3 orting pattern to ISO 44-, NFA 3..M R and ANSI 93.7 D Suplates G 66/ (3/8" N); G 66/2 (SAE-6; 9/6-8); G 67/ (/2" N); G 646/2 (SAE-; 7/8-4); G 34/ (3/4" N); G 34/2 (SAE-2; -/6-2) Valve mounting olts /4-2x2 in (M6 x 4) [tightening torque =.4 ft-ls (. Nm)], must e ordered separately. /6

6 Ordering code, availale spare parts and seals Individual connection Spare parts Solenoid DC Voltage Item Description Voltage Order numer 7 Coil for individual connection 2 V RR V RR Hand nut RR 297 O-Ring RR 8263 Seal kit Valve: lug connector Z Item Seal Material Order numer 3 NR seals RR 3282 FM seals RR /6 Mannesmann Rexroth Corporation Rexroth Hydraulics Div., Industrial, 23 City Line Road, ethlehem, A el. (6) Fax: (6) Rexroth Hydraulics Div., Moile, 7 Old Mansfield Road, Wooster, OH el. (33) Fax: (33) All rights reserved Suject to revision rinted in U.S.A.