4/3-4/2 Directional valve elements with or without secondary relief valves, and with or without LS connections

Transcription

1 4/3-4/2 Directional valve elements with or without secondary relief valves, and with or without LS connections RE /7.12 Replaces: 1.9 1/8 8_8 (EDZ) Size 4 Series Maximum operating pressure 31 bar [45 psi] Maximum flow 25 l/min [6.6 gpm] Port connections G 3/8 SE6 - M16x1.5 DVI54 Summary Description Page General specifications 1 Ordering details 2 Configuration 2 Spool variants 3 Principles of operation, cross section 3 Technical Data 4 Δp-Q v characteristic curves 6 Performance limits 6 External Dimensions and Fittings 7 Electric connections 8 General specifications - Valve elements with 4 ways and 3, or 2, positions. - Control spools directly operated by solenoids with removable coils. - In the de-energized condition, the control spool is held in the central position by return springs. - Wet pin tubes for DC coils, with push rod for mechanical override; burnish surface treatment. - Coils can be rotated 36 around the tube. - Manual override (push-button or screw type) available as option.

2 2/8 osch Rexroth Oil Control S.p.. EDZ RE /7.12 Ordering details Family Directional valve elements ED Type Size 4 Configuration Standard = With secondary valve on = 1 With ch. for Load Sensing = 4 Coil type C36 Spool variants 1) 4/3 operated on both sides a and b = _ 2 4/2 operated on side a only = _ 3 8 _ 8 _ Voltage supply Without coil = 12V DC = O 13V DC = D 24V DC = OC 27V DC = C 48V DC = OD 11V DC = OE (21.5 DC) 24V C = OV (98 DC) 11V C = OW (27 DC) 23V C = OZ Configuration vailable connections Options No code = No options = Standard P = Push-button type manual override F = Screw type manual override Secondary valves setting * = 5-21 bar [ psi] 1 = 1-31 bar [ psi] 2 = 25-5 bar [ psi] Ports 3 = G 3/8 DIN 3852 U = M 16x1,5 DIN 3852 = 9/16-18 UNF 2- (SE6) Electric connections = Without coils 1** = With coils, without mating connector DIN EN = With coils, with bi-directional diode, without mating connector vertical mp-junior 4 = With coils, with bi-directional diode, without mating connector horizontal mp-junior 7 = With coils, with bi-directional diode, without mating connector DT4-2P 31 = With coils and bipolar sheathed lead 35mm [13,8 in] long 1) The required hydraulic symbol and spool variant can be chosen by consulting page 3. * Without secondary valve (versions 8 ; 84 ), the standard configuration corresponds to. ** For connectors ordering code see data sheet RE The secondary valves have a maximum flow capacity of 6 l/min [1.6 gpm]. P T = P T = 1 P LS T = 4

3 RE /7.12 EDZ osch Rexroth Oil Control S.p.. 3/8 Spool variants 8_ 2 8_ 3 a a b P T b a a P T =21 =X31 =21 =Y31 =C21 =E21 =K21 Principles of operation, cross section The sandwich plate design directional valve elements 8_8 are very compact direct operated solenoid valves which control the start, the stop and the direction of the oil flow. These elements basically consist of a stackable housing (1) with a control spool (2), one or two solenoids (5), and one or two return springs (4). When energized, the force of the solenoid (5) pushes the control spool (2) from its neutralcentral position to the required end position a or b, and the required flow from P to (with to T), or P to (with to T) is achieved. Once the solenoid is de-energized, the return spring (4) pushes the spool thrust washer (3) back against the housing and the spool returns in its neutral-central position. Each coil is fastened to the solenoid tube by a ring nut (6). pin (7) allows to push the spool (2) in emergency conditions, when the solenoid cannot be energized, like in case of voltage shortage

4 4/8 osch Rexroth Oil Control S.p.. EDZ RE /7.12 Technical Data (for applications with different specifications consult us) General Valve element with 2 solenoids kg [lbs] 1.34 [2.95] Valve element with 1 solenoid kg [lbs] 1.6 [2.34] mbient Temperature C [ F] [ ] (NR seals) Hydraulic Maximum pressure at P, and ports bar [psi] 31 [45] Maximum pressure at T bar [psi] 25 [3625] Maximum inlet flow l/min [gpm] 25 [6.6] Maximum inlet flow with spool 21 l/min [gpm] 2 [5.3] Hydraulic fluid General properties: it must have physical lubricating and chemical properties suitable for use in hydraulic systems such as, for example: Mineral oil based hydraulic fluids HL (DIN part 1). Mineral oil based hydraulic fluids HLP (DIN part 2). For use of environmentally acceptable fluids (vegetable or polyglycol base) please consult us. Fluid Temperature C [ F] [ ] (NR seals) ISO 4572: β x 75 X= Permissible degree of fluid contamination ISO 446: class 2/18/15 NS 1638: class 9 Viscosity range mm 2 /s Electrical Voltage type DC (C only with RC connection) Voltage tolerance (nominal voltage) % Duty Continuous, with ambient temperature 5 C [122 F] Coil wire temperature not to be exceeded C [ F] 15 [32] Insulation class Compliance with H Low Voltage Directive LVD 73/23/EC (26/95/EC), 24/18/EC Coil weight kg [lbs].215 [.44] Voltage V RC (21,5) 11 +RC (98) Voltage type DC DC DC DC DC DC C C C Power consumption W Current (nominal at 2 C [68 F]) RC (27) Resistance (nominal at 2 C [68 F]) Ω

5 RE /7.12 EDZ osch Rexroth Oil Control S.p.. 5/8 Voltage (V) Connector type Coil description Marking Coil Mat no. =O 1 12 DC C361 12DC 12 DC R93344 =O 3 12 DC MP JUNIOR C363 12DC 12 DC R93347 =O 4 12 DC MP JUNIOR Horizontal C364 12DC 12 DC R =O 7 12 DC DEUTSCH DT 4-2P C367 12DC 12 DC R93348 =O DC Cable 35 mm long C DC 12 DC R93345 =D 1 13 DC C361 13DC 13 DC R93351 =D 7 13 DC DEUTSCH DT 4-2P C367 13DC 13 DC R93349 =OC 1 24 DC C361 24DC 24 DC R93353 =OC 3 24 DC MP JUNIOR C363 24DC 24 DC R93357 =OC 4 24 DC MP JUNIOR Horizontal C364 24DC 24 DC R =OC 7 24 DC DEUTSCH DT 4-2P C367 24DC 24 DC R93358 =OC DC Cable 35 mm long C DC 24 DC R93355 =C 1 27 DC C361 27DC 27 DC R93356 =C 7 27 DC DEUTSCH DT 4-2P C367 27DC 27 DC R9335 =OD 1 48 DC C361 48DC 48 DC R93359 =OD 4 48 DC MP JUNIOR Horizontal C364 48DC 48 DC R =OE 1 11 DC C361 11DC 11 DC R93361 =OV 1 24 RC C DC 21.5 DC R93354 =OW 1 11 RC C361 98DC 98 DC R9336 =OZ 1 23 RC C361 27DC 27 DC R93362

6 6/8 osch Rexroth Oil Control S.p.. EDZ RE /7.12 Characteristic curves Measured with hydraulic fluid ISO-VG32 at 45 ± 5 C [113 ± 9 F]; ambient temperature 2 C [68 F]. psi bar PRESSURE-Δp 29 2 Curve No. SPOOL VRINT P>T P> P> >T >T E C K X l/min Y gpm FLOW-Q Performances limits PRESSURE-p PRESSURE-p psi psi bar l/min gpm FLOW-Q Minimum flow for efficiency of LS control bar l/min SPOOL VRINT Curve No E C21 1 K21 3 X31 1 Y31 2 The performance curves are measured with flow going across and coming back, like P> and >T, with symmetrical flow areas. In case of special circuit connections, the performance limits can change. PRESSURE-p psi bar gpm FLOW-Q Lowest pressure setting curve for secondary valves l/min 1 2 Secondary valve setting Curve No bar [7-295 psi] 1-31 bar [14-45 psi] bar [35-7 psi] gpm FLOW-Q

7 RE /7.12 EDZ osch Rexroth Oil Control S.p.. 7/8 External Dimensions and Fittings 1 Solenoid tube Ø 14 mm [.55 inch]. 2 Ring nut for coil locking (OD 2.5 mm); torque 3-4Nm [2.2-3 ft-lb]. 3 Identification label. 4 Clearance needed for connector removal. 5 Optional push-button manual override, EP type, for spool opening: it is pressure stuck to the ring nut for coil locking. Mat no. R Optional screw type manual override, EF type, for spool opening: it is screwed (torque 6-7 [ ft-lb]) to the tube as replacement of the coil ring nut. Mat no. R Flange specifications for coupling to ED intermediate elements. 8 For tie rod and tightening torque information see data sheet RE O-Rings for P and T ports. 1 Space needed for secondary valve. 11 and ports.

8 8/8 osch Rexroth Oil Control S.p.. EDZ RE /7.12 Electric connections = =1 Protection class: IP 65 with female connector properly fitted (see drawing). Protection class: IP 65 with female connector properly fitted (see drawing). =3 =4 Protection class: IP 69 K with female connector properly fitted (see drawing). =31 =7 osch Rexroth Oil Control S.p.. Oleodinamica LC Division Via rtigianale Sedrio, Vezzano sul Crostolo Reggio Emilia - Italy Tel Fax / compact-directional-valves@oilcontrol.com This document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch Rexroth Oil Control S.p.a.. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging. Subject to change.