Modular Load Sensing System MLS3-06 Size 06 (D03) Q max 00 l/min (26.4 GM) p max 250 bar (4600 SI) ossible Applications riority module riority module 2 ase module Section module REK distributors Section module REK RE*-06 RM*-06 Optional module A Optional module Functional echnical Features Modular manifold system for the work hydraulics in mobile machines Designed to the complex and variable demands of mobile hydraulics needs Modular concept based on existing modular and screw-in valve technology by ARGO-HYOS Standard modules easily adaptable for specific applications Various modules allow the integration of various options into the standard modules Modules on manufacturer s stock shorten machine development time at the producers Modularity offers short delivery time and flexibility in the field during validation stage Load sensing control of pressure source from each working section Each working section is pressure compensated for constant performance Flexible modules including inlet block, section blocks, priority function (e.g. steering) or other optional blocks Inlet section suitable for both LS pumps and fixed displacement pumps asic modular valves interface with sub plate mounting pattern acc. to ISO 440, DIN 24340 (CEO 03) he MLS kit is intended for hydraulic circuits with several hydraulic actuators being used at the same time with different loads. hese kit systems provide two basic functions. First, they provide a constant pressure drop on operating valves of each section. A pressure compensator in each section ensures that the flow is independent of the load on the section. he second function is energy saving. he logic valves in the MLS choose the highest pressure needed in the system for a given section. his pressure signal is connected into the LS channel, which is used to control the pressure source. he pressure source can either be a regulated pump with LS control or a fixed displacement pump. If a fixed displacement pump is used, the LS signal controls the pressure compensator (pos 6). he LS signal drives the pressure source to the required value in real-time. herefore, no energy is wasted on the relief valve, which must be set to the highest expected pressure. MLS modular kits consist of the following modules riority module he module with a priority valve, pressure compensator and one integrated main consumer establishes a supply to consumers in the first priority. riority module 2 he module for the second priority consumer function is attached to the riority module. ase module he inlet module with pressure compensator realizes a LS pressure depending on the need of the consumers and has 2 consumer sections. he consumer ports are flangable to optional modules A and. he LS signal of the base module can be electrically unloaded. Section module S he section module is used in cases where additional consumer functions are needed. It is flangable to the base module as well, the consumer port side is flangable to optional modules A and. Section module SREK he SREK module is designed to connect two or more REK-03 valves via two pressure compensators. Optional modules A and hese modules enable additional functions at the consumer side, such as load holding, electrical cylinder unload etc. age www.argo-hytos.com
Design Recommendations Relief and unloading of the LS line: In the MLS system only one relief valve on the main line is implemented, therefore the used LS pump must have its own relief of the LS line. he LS line pressure in the ase module of the system can be released to the tank by an electrical unloading valve. echnical specifications of the module: he specified values for operating pressure, flow rate and temperatures in the technical documentation are consistent with the values for the recommended valves in the ARGO-HYOS program. Operation at low temperatures: Minimum storage temperature: -30 C (-22 F) Minimum operating temperature: -20 C (-4 F) Attention should be paid to the viscosity at cold start, as highly viscous media may cause cavitation. he listed viscosity limits have to be observed. Refer to the datasheet General Information GI_0060 (roducts and operating conditions) for basic recommendations. New components have to be filled at higher temperatures to ensure sufficient lubrication Low temperature measures for pumps, filters, cylinders, gears, etc. have to be coordinated with the manufacturers Warm-up instructions: Warm up the system to a least -30 C, start engine Set pumps to neutral position without flow Use pumps for at least 0 min at idle speed Afterward swivel pumps slowly or use them in pressure-reduced mode (max. 50 bar and 50 % flow) Activate all system functions for some time without load Continuously circulate flow through all components to avoid temperature shocks emperature difference between media and component should not exceed 20 C On hydraulic motors ensure passage between flush and leakage port (permitted housing pressure) System is ready for use at temperatures over -20 C Inlet modules (riority and ase module): Influence of the inlet pressure compensator and the individual pressure compensator on the flow: he size of the spring used in the inlet pressure compensator determines the flow in the complete system. he spring must always be bigger than the ones in the following individual pressure compensators of the consumer sections. We recommend that the inlet spring shall be set to 0 bar above the maximum required value so that the demanded flow at the biggest consumer is only overridden a little. he spring rate of the individual pressure compensator is selected according to the inlet pressure compensator. he spring pressure should be around 2-3 bar lower than the inlet. If the chosen individual pressure compensator begins throttling the oil flow too early the installed spring is too weak. osition of the modules in the complete system: he module (function module) with the highest flow has to be directly installed at the inlet module. Smaller consumers follow. he smallest consumers (e.g. cylinder functions) have to be mounted at the end as REK distributors. Code MLS3-06 - - Modular Load Sensing System Size / attern CEO G Surface reatment anodized, transparent Sections ase module riority module riority module 2 Section module Section module REK Optional module A Optional module 2 S SREK OA O AL No designation V Seals NR FM (Viton) Material of the manifold aluminium, EN AW-7075 6* he modules have to be ordered separately. All modules are supplied only with the valves necessary for the functions. he valves depending on the circuit variations need to be ordered separately. Completely assembled MLS modules in one solution are possible. Contact our technical support for their specification, identification and feasibility. www.argo-hytos.com age 2
Illustratice icture A A *Use CEO valve with just one solenoid on side A where block OA is used ø.2mm ø0.6mm ø0,6mm ø,25mm A A A OA A O G/2 G/4 G3/4 G38 LS A A see* 2 C S SREK A age 3 www.argo-hytos.com
echnical Data ISO 440-03-02-0-05 Modular valves mounting surface 06 (D03) 2,7 [0.50] 4xM5-6Hx3+/6-2 3,75 [.25] 0,75 [0.03] A 2,5 [0.85] 30,2 [.8] 33 [.30] 40,5 [.59] 5, [0.20] 5,5 [0.6] 25,9 [.6] 3[.22] orts, A,, max. 7.5 mm (0.29 in) G Max. operating pressure (Al) bar (SI) 250 (3626) Max. flow l/min (GM) 00 (26.4) ort dimensions Mass (Al)... G3/4... G/2 A..... LS... G/4 5.3 (.68) 6.0 (3.23) 2 2.0 (4.4) S kg (lbs).55 (3.42) SREK.68 (3.70) OA 2.2 (4.85) O 2.4 (5.29) Studrods Studrods / olts MLS3-06 Modular combination Studrod (Al) Optional module olts DIN 92-0.9 OA (M8) M8 x 27 20204400 OA M8 x 0 + wascher + spring wascher O (M8) M8 x 7 20205000 O M8 x 60 + wascher + spring wascher + M0 x 270 24607700 + S (or +SREK) M0 x 80 + wascher + spring wascher ++2 M0 x 350 2370400 olts, nuts and washers are not delivered. + 2S M0 x 60 23704300 + 3S M0 x 220 on request + 4S M0 x 280 237000 + 5S M0 x 340 on request Studrods are not part of delivery but can be ordered. hreaded Chambers for the MLS3-06 Dimensions in millimeters (inches) A G/8 G/4 G/2 G3/4 5.45 (0.608) 20.7 (0.85) 27. (.067) 34.5 (.358) 39 (.535) C.3 (0.05) 2 (0.079) 2 (0.079) 2 (0.079) 2 (0.079) O-rings (NR) 2.42 x.78 5.54 x 2.62 22.22 x 2.62 29.82 x 2.62 34.59 x 2.62 2030000 2050600 2046300 9906700 2049200 www.argo-hytos.com age 4
MLS3-06-*/* Modular Load Sensing System - asic Module he inlet base module with pressure compensator realizes a LS pressure depending on the consumer demand. his ensures that always the highest pressure required will be provided by the LS pump. If there are no consumers active, there will be an unpressurized flow corresponding to the pressure compensator. It is possible to flange-on priority modules on one side and sectional modules from the other side. he inlet base module MLS3-06-* includes two consumer sections for the installation of control valves with subplate mounting interface acc. to ISO 440, DIN 24340 (CEO 03). MLS3-06- includes: 33985000 os. ype cs Manifold block 320350 3 Shuttle valve LV2-043 2 28944700 5 ressure compensator V2-02/SC-A 2 595950 7 Orifice M6-060 27380600 8 Check valve VJO-06/SG002-2 5949400 9 Minimess 203-0-8.00 G/4 20424800 0 Orifice M6-20 88600 he grey marked valves are not included when MLS3-06- modules are ordered. he combination of valves is application specific. Order separately other recommended items: Data sheet/ Ord. No. 2 ressure relief valve SR4A-2/H35S-A HA 5065 4 2/2 Direct. control valve SD2E-A2/H2I-A HA 4040 Coil C9* HA 8007 Fixed displacement pump Load sensing pump Switchable fixed displacement and load sensing pump MLS3-06- combination with MLS3-06- (2) 6 ressure compensator V2-03/S2C-A 2274790 Cavity plug SC-QM3/XXX-A 2449300 2 Cavity plug SC-2/XX-A 9356300 3 ressure compensator V2-03/S4F 34637900 age 5 www.argo-hytos.com
MLS3-06-*/* Modular Load Sensing System - riority Module he inlet module with a priority valve and one integrated main consumer implements the supply flow to consumers in the first priority and in second priority, and from there to the other sections. ypical priority functions are steering (open- or closed-center), priority 2 functions include work hydraulics. he flow in priority consumers is supplied by a pressure compensator valve. In the third priority it is possible to use the integrated consumer in proportional mode. Supply and overpressure protection is achieved by a pressure compensator with integrated relief function of the main line. If there are no consumers active there will be an unpressurized flow corresponding to the pressure compensator. It is possible to flange-on modules on one side. he inlet priority module MLS3-06-* includes one consumer section with priority flow for the installation of a control valve with subplate mounting interface acc. to ISO 440, DIN 24340. MLS3-06- includes: 33984800 os. ype cs Manifold block 34344400 4 Shuttle valve LV2-043 2 28944700 5 Check valve VJO-06/SG002-5949400 3 ressure compensator V2-02/SC-A 595950 7 riority valve EC2-42-0-N-60 30936800 8 Orifice M6-25 30666200 9 Orifice M6-060 27380600 O-rings 2.42 x.78 5.54 x 2.62 29.82 x 2.62 34.59 x 2.62 2 2030000 2050600 9906700 2049200 he grey marked valves are not included when MLS3-06- modules are ordered. he combination of valves is application specific. Fixed displacement pump Load sensing pump Switchable fixed displacement and load sensing pump Data sheet/ Order separately other recommended items: Ord. No. 2 ressure relief valve SR4A-2/H35S-A HA 5065 6 ressure compensator V2-03/S2C-A 2274790 Cavity plug SC-QM3/XXX-A 2449300 2 Cavity pug SC-2/XX-A 9356300 3 ressure compensator V2-03/S4F 34637900 www.argo-hytos.com age 6
MLS3-06-2*/* Modular Load Sensing System - riority Module 2 he riority module 2 and Section block S implement an on/off or proportional consumer supply depending on the valve installation. he riority module 2 extends the riority module while the Section block S extends the ase module. hey are used in situations when additional consumers need to be operated. Sections are always compensated with 2-way pressure compensators. he LS signal is reported via check valves. Note: he modules are not interchangeable. MLS3-06-2 includes: 33984900 os. ype cs. Manifold block 34338400 2 Shuttle valve LV2-043 28944700 3 ressure compensator V2-02/SC-A 595950 O-rings 2.42 x.78 22.22 x 2.62 2 2030000 2046300 age 7 www.argo-hytos.com
MLS3-06-S*/* Modular Load Sensing System - Section lock S he riority module 2 and Section block S implement an on/off or proportional consumer supply depending on the valve installation. he riority module 2 extends the riority module while the Section block S extends the ase module. hey are used in situations when additional consumers need to be operated. Sections are always compensated with 2-way pressure compensators. he LS signal is reported via check valves. Note: he modules are not interchangeable. MLS3-06-S includes: 378800 os. ype cs. Manifold block 320320 2 Shuttle valve LV2-043 28944700 3 ressure compensator V2-02/SC-A 595950 4 Check valve VJO-06/SG002-5949400 O-rings 2.42 x.78 22.22 x 2.62 29.82 x 2.62 3 2 2030000 2046300 9906700 0) 50 (.97) ISO 440-03 7,9 (0.3) 87 (3.43) 3x HRU 96 (3.78) 78 (3.07) 65 (2.56) 44 (.73) 2 (0.83) 9 (0.75) 2 (0.47) 0 65 (2.56) 62 (2.44) 32 (.26) 30 (.8) 0) 0 9 (0.35) 25,9 (.02) 6 (2.4) 73 (2.87) 88 (3.46) 0 8 (0.32) 20,4 (0.8) 2,4 (0.84) 68 (2.68) 45 (.77) 53 (2.09) 60 (2.36) A (4.37) 40 (.57) 84 (3.3) 2x 8 /5,5 G/8 3 xm8 / 9,5 9 6 ( 3.78 ) www.argo-hytos.com age 8
MLS3-06-SREK*/* Modular Load Sensing System - Section Module SREK Section module SREK he SREK module is designed to connect two or more REK-03 valves via two pressure compensators. a REK MLS3-06-SREK includes: 37880 os. ype cs Manifold block 3202780 2 Check valve VJO-06/SG002-5949400 3 ressure compensator V2-02/SC-A 595950 LS 3 2 O-rings 2.42 x.78 22.22 x 2.62 29.82 x 2.62 3 2 2030000 2046300 9906700 age 9 www.argo-hytos.com
MLS3-06-OA(O)*/* Modular Load Sensing System - Optional lock OA (O) is an optional block that may be connected to output ports of the sections. Use a CEO valve with just one solenoid on side A where block OA is used - see page 3. MLS3-06-OA includes: 3787700 os. ype cs. Data sheet/ Ord. No. Manifold block 32032900 3 Check valve SCF-2/H005 27835000 4 Needle-restrictor valve 7/8 UNF SF2M-2/H4 27853600 O-rings 22.22 x 2.62 3 2046300 Order separately the other recommended items: 2 2/2 Directional control valve SD3E-2/H2L2M9 HA 4063 Coil C22* HA 8007 MLS3-06-O includes: 3398500 os. ype cs. Manifold block 3433600 2 Over center valve SO5A-Q3/I5 2 5628200 O-rings 22.22 x 2.62 3 2046300 www.argo-hytos.com age 0