4/3-4/2 Proportional directional valves L5080 solenoid (LC04P) operated (for open loop control) L5080 (LC04P)

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1 / - / Proportional directional valves L solenoid (LCP) operated (for open loop control) L (LCP) RE - Edition:. Replaces: Size Series Maximum operating pressure bar ( psi) Maximum flow l/min (.7 gpm) General specifications Proportional solenoid operated directional spool valve. Actuation by proportional solenoids with a central tube and removable coil. Spring centered control spool. For mounting on industry standard surface port pattern to CETOP RP H-.-P. Wet pin DC solenoids with removable coil and manual override. Coil can be rotated by. Contents Ordering details Functional description Technical data Characteristic curves Characteristic curves External dimensions and fittings 7 Electric connection RE -/., Bosch Rexroth AG

2 L (LCP) / - / Proportional directional valves Ordering details Ordering details Spool variants 7 9 L = _ A B = _ = _ A B A B Family Directional Valve elements L Type CETOP valves Size NG (P) a a b P T b a a P T b P T b Operation Solenoid operated P proportional coil Spools P T closed in neutral B A and B to T in neutral E Hydraulic scheme / operated A and B side / operated A side / operated B side Nominal flow ) 7 l/min (. gpm) S l/min (. gpm) S l/min (.7 gpm) S Voltage Without coil V DC OB V DC OC Electric connections 9 Without coils With coils, without mating connector DIN EN 7- With coils, with bi-directional diode, without mating connector vertical Amp-Junior Optional Standard ) =B =E =B =E =B =E ) With p (P > T) bar ( psi), corresponding approx. to p P>A,B bar (7 psi). ) For connectors ordering code see data sheet RE -9. Bosch Rexroth AG, RE -/.

3 / - / Proportional directional valves L (LCP) Functional description Functional description a b (T) A P B(T) 7 7 Type L The proportional valves type L are designed as the solenoid operated ones; they are actuated by proportional electromagnets and the current supply to the solenoids is controlled by external electronic control system (Power Wave Modulator, or PWM). They provide or way flow control, usually from port P to either port A or B, and the consequent flow return to T from B or A respectively. The valves are composed by a central cast iron body () which mounts on industry standard surfaces where the flow ports and the installation holes are located; the central body houses the precisely machined directional control spool () which is held in the neutral or initial position by the return springs () and (). One or two solenoids () and (), composed by a central tube and a surrounding coil (a) and (b), are fitted to the body at the spool s ends: when one coil is energized, the magnetic field develops a force on the oil immersed mobile plunger incorporated in the tube which pushes the control spool from the initial position into a displaced position: the spool displacement is proportional to the electric input. Example for solenoid (): - when coil (b) is energized, the spool () travels to the left proportionally to the electric input supply then the corresponding opening area of the spool notches is achieved. - Across the orifice-like openings, flow becomes possible from P to A, and from B to T. - When coil (b) is de-energized, the force of spring () pushes the spool () back to the central position. Type L. and L. These valves have one solenoid, either (a) or (b), consequently the directional control spool can travel from the initial position to one side only. A blinding threaded plug (7) is fitted in place of the second solenoid. RE -/., Bosch Rexroth AG

4 L (LCP) / - / Proportional directional valves Technical data Technical data General Valve element with solenoids kg (lbs).7 (.) Valve element with solenoid kg (lbs).9 (.) Mounting position Unrestricted Ambient Temperature C ( F)...+ (-...+) (NBR seals) Hydraulic Maximum pressure at P, A and B ports bar (psi) () Maximum pressure at T bar (psi) () Maximum inlet flow l/min (gpm) 9 (7.) Nominal flow at P = bar l/min (gpm),, (.,.,.7) E-schemes p closed in the neutral position (connection from A to T and B to T) Approx..% of the nominal cross-section Hysteresis % 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 ). Mineral oil based hydraulic fluids HLP (DIN part ). For use of environmentally acceptable fluids (vegetable or polyglycol base) please consult us. Fluid Temperature C ( F)...+ (-...+7) (NBR seals) Permissible degree of fluid contamination ISO 7: β x 7 X=... ISO : class 9/7/ NAS : class Viscosity range mm /s... (optimal...) Electrical Voltage type PWM Hz Voltage tolerance (nominal voltage) % Duty Continuous, with ambient temperature C ( F) Coil wire temperature not to be exceeded C ( F) () Insulation class H Compliance with Low Voltage Directive LVD 7//EC (/9/EC), //EC Coil weight kg (lbs). (.) Voltage V Nominal % current A.7.9 Coil resistance - Cold value Ω.7 (nominal at C ( F)) - Max. hot value Ω..9 Note For applications with different specifications consult us Code Voltage [V] Connector type Coil description Marking Coil Mat no. =OB DC EN 7- (Ex. DIN ) P DC R9 =OB DC AMP JUNIOR P DC R99 =OC DC EN 7- (Ex. DIN ) P DC R99 =OC DC AMP JUNIOR P DC R99 Bosch Rexroth AG, RE -/.

5 / - / Proportional directional valves L (LCP) Characteristic curves Characteristic curves Ordering code S: it supplies l/min (. gpm) nominal flow at % duty cycle, with bar ( psi) pressure drop. gpm l/min, ΔP = bar ( psi) constant ΔP = bar (9 psi) constant ΔP = bar ( psi) constant ΔP = bar ( psi) constant ΔP = bar (7 psi) constant 7 9 Current % Ordering code S: it supplies l/min (. gpm) nominal flow at % duty cycle, with bar ( psi) pressure drop. gpml/min. ΔP = bar ( psi) constant ΔP = bar (9 psi) constant ΔP = bar ( psi) constant ΔP = bar ( psi) constant ΔP = bar (7 psi) constant 7 9 Current % Ordering code S: it supplies l/min (.7 gpm) nominal flow at % duty cycle, with bar ( psi) pressure drop. gpml/min 7 7 ΔP = bar ( psi) constant ΔP = bar (9 psi) constant ΔP = bar ( psi) constant ΔP = bar ( psi) constant 9 ΔP = bar (7 psi) constant 7 9 Current % Measured with hydraulic fluid ISO-VG at ± C ( ±9 F); ambient temperature C ( F). Δp= valve pressure differential (inlet pressure Pp minus load Pl and minus return pressure Pt). The characteristic curves are obtained with way connected, P A / B T or P B / A T. RE -/., Bosch Rexroth AG

6 L (LCP) / - / Proportional directional valves Characteristic curves Characteristic curves Ordering code S gpm l/min. at % mean current at 7% mean current at % mean current bar psi Ordering code S gpm l/min at % mean current at 7% mean current at % mean current bar psi Ordering code S gpm l/min, at % mean current at 7% mean current at % mean current bar psi The performance curves are obtained with two ports connected, P A or P B. Bosch Rexroth AG, RE -/.

7 Dimensions [mm (inches)] / - / Proportional directional valves L (LCP) External dimensions and fittings 7 External dimensions and fittings Required surface finish of mating piece. Valve body. Identification label. Proportional solenoid. Blinding threaded plug, for versions L. and L., with switched positions. Seals (same O Ring) on ports A,B,P,T. Threaded coil retainer nut. Torque Nm (.9. ft-lb). 7 Proportional solenoid, with coil (a). Locking screws pieces: ISO 7 (UNI 9) hexagon socket head cap screw M x, recommended specific strength. class, to be ordered separately. Torque Nm (.9. ft-lb). 9 Drilling specifications of standard mounting surface according to CETOP RP H-.--P. Clearance needed for connector removal. RE -/., Bosch Rexroth AG

8 L (LCP) / - / Proportional directional valves Electric connection without coil Protection class: IP when connector with seal is properly screwed down. Protection class: IP with female connector properly fitted (see drawing). Bosch Rexroth Oil Control S.p.A. Oleodinamica LC Division Via Artigianale Sedrio, Vezzano sul Crostolo Reggio Emilia - Italy Tel. +9 Fax +9 / compact-hydraulics-cdv@boschrexroth.com This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch 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. Bosch Rexroth AG, RE -/.