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

Transcription

1 4/2 Directional valve elements with or without secondary relief valves, with or without LS connections, and with 2/2 solenoid cartridge valve RE /7.12 Replaces: 1.9 1/8 8_58 (EDZ-VEI) Size 4 Series Maximum operating pressure 31 bar [45 psi] Maximum flow 25 l/min [6.6 gpm] ort connections G 3/8 - SE6 - M16x1.5 DVI76 Summary Description age General specifications 1 Ordering details 2 Configuration 2 Spool variants 3 rinciples of operation, cross section 3 echnical Data 4 Δp-Q v characteristic curves 6 erformance limits 6 External Dimensions and Fittings 7 Electric connections 8 General specifications - Valve elements with 4 ways and 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 spring. - Wet pin tubes for DC coils, with push rod for mechanical override; burnish surface treatment. - Manual override (push-button or screw type) available as option. - dditional solenoid cartridge 2/2, NO or NC, single locking or dual locking on port.

2 2/8 osch Rexroth Oil Control S.p.. EDZ-VEI RE /7.12 Ordering Details Family Directional valve element ED ype Size 4 Configuration Standard = With secondary valve on = 1 With ch. for Load Sensing = 4 Coil type C36 8 _ 5 8 E 4 1 Options No code = No options = Standard = ush-button type manual override F = Screw type manual override Solenoid screw-in cartridge VEI N = Without valve C = Normally closed = Normally open D = Dual locking normally closed O = Dual locking normally open Secondary valve setting* = 5-21bar [ psi] 1 = 1-31bar [145-45psi] 2 = 25-5bar [ psi] 3 = Without secondary valve Spool Variants 4/2 operated on side b only Voltage supply Without coil = 12V DC = O 24V DC = OC (21.5 DC) 24V C = OV (98 DC) 11V C = OW (27 DC) 23V C = OZ Configuration vailable connections orts 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 7 = With coils, with bi-directional diode, without mating connector D4-2 * VEI solenoid cartridge must be ordered separately. ** For connectors ordering code see data sheet RE he secondary valves have a maximum flow capacity of 6 l/min. [1.6 gpm]. = = 1 = 4 LS

3 RE /7.12 EDZ-VEI osch Rexroth Oil Control S.p.. 3/8 Spool variants C D _ O _ b b b b b b b b =E41 rinciples of operation, cross section he sandwich plate design directional valve elements 8_58 are very compact direct operated solenoid valves which control the start, the direction and the leak free stop the oil flow. hese elements basically consist of a stackable housing (1) with a control spool (2), one solenoid (5), a spring holder plug (7); two return springs (4); a solenoid screw-in cartridge VEI (8) with its coil (9). When energized, the force of the solenoid (5) pushes the control spool (2) from its rest position to the end position b. If there is a solenoid cartridge VEI (8) type C,, O, the oil flow goes directly to the port ; if there is a solenoid cartridge VEI (8) type D (Dual locking), it is necessary the energize the solenoid cartridge as well in order to allow the oil flow to the port. Once the solenoid (5) is de-energized, the return spring (4) pushes the spool thrust washer (3) back against the housing and the spool (2) returns in its rest position. he leak free holding at port is provided by energizing (or de-energizing, if the VEI is NC type) the solenoid cartridge. y energizing open the VEI (8) ( C and versions), the port is open to tank and downstream flow is possible. he coils are fastened to the respective solenoids (5) and VEI (8) by the ring nuts (6) and (1)

4 4/8 osch Rexroth Oil Control S.p.. EDZ-VEI RE /7.12 echnical Data (for applications with different specifications consult us) General Valve element with solenoid kg [lbs] 1.8 [3.96] mbient emperature C [ F] [ ] (NR seals) Hydraulic Maximum pressure at and ports bar [psi] 31 [45] Maximum pressure at bar [psi] 25 [3625] Maximum inlet flow l/min [gpm] 25 [6.6] 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 HL (DIN part 2). For use of environmentally acceptable fluids (vegetable or polyglycol base) please consult us. Fluid emperature C [ F] [ ] (NR seals) ISO 4572: β x 75 X= ermissible 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) 23 +RC (27) Voltage type DC DC C C C ower consumption W Current (nominal at 2 C [68 F]) Resistance (nominal at 2 C [68 F]) Ω

5 RE /7.12 EDZ-VEI osch Rexroth Oil Control S.p.. 5/8 Voltage (V) Connector type Coil description Marking Coil Mat no. =O 1 12 DC EN (Ex. DIN 4365) C361 12DC 12 DC R93344 =O 3 12 DC M JUNIOR C363 12DC 12 DC R93347 =O 7 12 DC DEUSCH D 4-2 C367 12DC 12 DC R93348 =OC 1 24 DC EN (Ex. DIN 4365) C361 24DC 24 DC R93353 =OC 3 24 DC M JUNIOR C363 24DC 24 DC R93357 =OC 7 24 DC DEUSCH D 4-2 C367 24DC 24 DC R93358 =OV 1 24 RC EN (Ex. DIN 4365) C DC 21.5 DC R93354 =OW 1 11 RC EN (Ex. DIN 4365) C361 98DC 98 DC R9336 =OZ 1 23 RC EN (Ex. DIN 4365) C361 27DC 27 DC R93362

6 6/8 osch Rexroth Oil Control S.p.. EDZ-VEI RE /7.12 Characteristic curves Measured with hydraulic fluid ISO-VG32 at 45 ± 5 C [113 ± 9 F]; ambient temperature 2 C [68 F]. Δ psi Δ bar RESSURE-Δp Curve No. SOOL VRIN > > X RESSURE-p RESSURE-p RESSURE-p psi psi psi l/min gpm FLOW-Q erformances limits bar SOOL VRIN Curve No. 2 X he performance curves are measured with flow going across and 5 coming back, like > and >, with symmetrical flow areas. In case of special circuit connections, the performance limits can l/min change gpm FLOW-Q Minimum flow for efficiency of LS control bar l/min gpm FLOW-Q Lowest pressure setting curve for secondary valves bar l/min FLOW-Q gpm 1 2 Secondary valve setting Curve No bar [7-295 psi] 1-31 bar [14-45 psi] bar [35-7 psi] 2

7 RE /7.12 EDZ-VEI osch Rexroth Oil Control S.p.. 7/8 External Dimensions and Fittings 1 Solenoid tube Ø 14 mm [.55 inch]. 2 Screw-in solenoid cartridge VEI hex 24 mm [.94 inch]. orque 39-51Nm [ lb-ft]. 3 Ring nut for coil locking (OD 2.5 mm); torque 3-4Nm [2.2-3 ft-lb]. 4 Identification label. 5 Clearance needed for connector removal. 6 Optional push-button manual override, E type, for spool opening: it is pressure stuck to the ring nut for coil locking. Mat no. R Optional screw type manual overide, 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 Optional manual override for VEI cartridge: it can be push/pull or screw type. lease refer to the VEI catalogue for details. 9 Flange specifications for coupling to ED intermediate elements. 1 For tie rod and tightening torque information see data sheet RE O-Rings for and ports. 12 Space needed for secondary valve in configuration and ports.

8 8/8 osch Rexroth Oil Control S.p.. EDZ-VEI RE /7.12 Electric connections = =1 rotection class: I 65 with female connector properly fitted (see drawing). rotection class: I 65 with female connector properly fitted (see drawing). =3 =4 rotection class: I 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 el Fax / compact-directional-valves@oilcontrol.com his 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. he 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. he 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.