Directional Control Valve HDS34

Transcription

1 Directional Control Valve Load Sensing Reference: E Issue: 7.9 1/54

2 Contents age 1 General information Introductions Directional valve installation Fittings Hydraulic fluid Filtration Directives and standards echnical specification: Inlet cover Standard inlet cover Inlet cover with priority for steering Elements Local compensator element Local check element: orts size Element hydraulic schemes Seal kit Spools Spools metering Valves signal adjustable relief valve ressure reducing valve RR Anti shock and anti cavitation valves UC Anti cavitation valves C signal normally open unloading valve (SF) signal normally open unloading valve with manual override (SE) signal normally closed unloading valve (SF normally closed) ilot oil supply cut off valve Coils for solenoid valves signal flow compensated drain valve (VRC) line manual shut off valve (NV1) roportional pressure reducing valve / ON OFF directional valve 22 6 Levers Standard lever group Manual joystick control Joystick control L26 46 with integrated locking system /54

3 6.4 ressurised positioner and lever (EHO EHC functions) ositioners Spring return to neutral position Detent in floating position and spring return to neutral from position 1 and Electro magnetic detent (EMD) Hydraulic controls Hydraulic control + floating position Electro hydraulic open loop proportional / ON OFF control (EHO) Electro hydraulic closed loop proportional control Electro hydraulic closed loop proportional control 34 8 End covers Blanking plate (... series) Blanking plate with flow control drain valve + line manual shut off valve (... series) End cover with tank line ports (... series) End cover with relief valve and tank line ports (... series) End cover with 3 way compensator (C... series) Sliding function end cover specific for backhoe application (S... series) 4 9 Suitable applications (Examples) elehandlers Assembling positions / controls flexibility Wheel loader Assembling positions / controls flexibility Backhoe loader Assembling positions / controls flexibility Composition of ordering code Std inlet cover riority for steering inlet cover Elements Blanking plate end cover End cover with tank line ports End cover with 3 way compensator Sliding function end cover roduct identification plate /54

4 1 General information 1.1 Introductions More than 2 years of leading presence and successful supplies in the telescopic loaders sector, the deep know how gained in the earthmoving machines field and the strong commitment to anticipate the upcoming technical and application needs of our customers, have guided Bucher Hydraulics Reggio Emilia in the development of the flow sharing directional valve. he stakable construction with a wide range of inlet and outlet covers as well as of controls, gives the designer a high degree of freedom in the choice of the assembling position of the valve and of the hydraulic circuit which fits in the best way the machine requirements. Each valve section elehandlers can be equipped with a load holding valve as well as a pressure compensator, in order to satisfy the requirements of both basic and premium machines, where a function control independent from the load and the inlet flow is requested. can be equipped with single levers or dual axis joystick, hydraulic proportional, open and closed loop electro hydraulic proportional controls, in combination also with dual axis joystick. he wide range of controls combined with the compact dimensions, especially in height which is a big issue in the development of machine cabins, makes the a very flexible valve able to fulfil all the requirements of modern machines Wheel Loaders Backhoe Loaders 1.2 Directional valve installation For the installation of the directional control valve on the equipment frame it is important to consider the following recommendations: the valve can be assembled in any position but, in order to avoid deformations and spool sticking, the surface on which the product is mounted has to be flat; before connecting pipelines, make sure that the pipeline hollows as well as fittings and seals are thoroughly clean; check also that the work ports are protected until the connection of the pipelines 1.3 Fittings In the interest of safety, only fittings with SRAIGH HREAD ENDS should be used (e.g. DIN3852). Fittings with AERED HREAD ENDS (e.g. DIN 3852 form C) should never be used, as they can cause deformation and cracks in the valve body. during assembly and servicing operations, it is necessary to adopt clean procedures and work in an environment free of chips, swarf, dust and other possible source of pollution; if the spools are connected to the equipment controls through linkages, make sure that they do not affect their operations; before painting the valve, check that the work port plastic plugs are tightly in place. Our warranty conditions will not be valid in case tapered fittings are used. he work port adaptors have to be fastened respecting the tightening torque values indicated in the following table (for different port types contact our Sales Dept.): 4/54

5 Recommended tightening torque for work port fittings Nm / lbft Metric ISO 261 M14X1.5 M18X1.5 M22X1.5 M27X2 M33x2 With O Ring seal (ISO ) With copper washer (ISO ) With rubber washer or steel (ISO ) 3 / / / / / / / / / / / / / / / 66.4 BS ISO /4" BS 3/8" BS 1/2" BS 3/4" BS 1" BS With copper washer (ISO ) With rubber washer or steel (ISO ) UN UNF ISO 263 With O Ring seal (ISO ) 3 / / / / / / / / / / 66.4 SAE6 9/16 18 UNF SAE8 3/4 16 UNF SAE1 7/8 14UNF SAE12 1 1/16 12UNF SAE16 3 / / / / / 95.9 IMORAN!: ightening torques depends on several different factors including lubrication, coating and surfaces finish. he fitting manufacturer shall be consulted. 1.4 Hydraulic fluid he main function of the fluid used in hydraulic systems is to transfer energy but it performs also other important functions: protect the components from corrosion, lubricate the directional valve moving parts, remove particles and heat from the system. In order to ensure proper operation and long life of the system it is important to choose the correct hydraulic fluid with proper additives. Bucher Hydraulics recommends to use a mineral based oil responding to ISO 6743/4 requirements, only. he system should be operated only with hydraulic oil containing anti foaming and antioxidant additives. Before using other types of fluid, please contact our Sales Dept, since they can cause serious damage to the directional valve components and jeopardize the correct function of the system. 1.5 Filtration In order to ensure proper operation and long life of the directional valve components it is extremely important to provide a proper and effective filtration of the hydraulic fluid. It is advisable to follow filter manufacturers instruction and recommendations. he fineness of the filter should be selected in order to guarantee that a contamination level of 2/18/15 ISO 446:1999 (NAS 1638 class 9) is not exceeded. When the high reliability of the system is an important requirement a 1 μm nominal pressure filter must be used. In these cases it is also advisable to use a pressure filter with by pass and indicator. For mechanical operated directional valves a <3 μm nominal return filter is adequate. he size of the return filters must suit the maximum return flow whereas the size of the pressure filters must suit the maximum pump flow. It is advisable to fit filters with pressure gauge or dirt indicator in order to make it possible to verify the filter condition. articular attention has to be paid to the cleaning of the machine hydraulic circuit and its components before the first run in, since the presence of foreign materials could cause damages to the directional valve components even if a proper filtration is provided. he filters integrated in the are provided to protect the valve components against big particles and not to filter the system. In order to obtain the best performance of the system we recommend to strictly follow the conditions advised here above, failing which warranty shall be void. 5/54

6 1.6 Directives and standards Atex: Attention: he equipment and protective systems of these catalogue ARE NO intended for use in potentially explosive atmospheres that is to say where there is an explosive atmosphere referred to in Article 2 of the Directive 99/92/EC and referred to Article 1.3 of the Directive 94/9/EC Machinery safety Hydraulic directional control valves are excluded by Directive 98/37/EC ISO 91: 2 Bucher Hydraulics S.p.A. is certified for research, development and production of directional control valves, power units, gear pumps and motors, electro pumps, cartridge valves and integrated manifolds for hydraulic applications. 1.7 echnical specification: IMORAN!: Specification and diagrams shown in this catalogue are measured with mineral oil having a viscosity of 23 mm 2 /s at 5 C Features Max inlet flow Max work port A/B flow (13 bar 19 SI margin) Max return flow admitted Supply port max continuous operating pressure Work port A/B max peak pressure Max back pressure (*) 18 l/min (48 US gpm) 15 l/min (4 US gpm) 25 l/min (67 US gpm) 3 bar (43 SI) 35 bar (5 SI) 3 bar (43 SI) ort threads size Max spool leakage 1/2" BS 3/4" BS SAE1 SAE12 (CEJN quick coupling please contact our Sales Dept) 2 cc/min (1 bar / 143 SI, 5 C, 23 mm 2 /s) Lower values on demand Service port relief and anti cavitation fixed setting valves see chapter 5.3 Max contamination level 2 / 18 / 15 ISO 446:1999 (NAS 1638 class 9) Fluid temperature 2 C / +8 C (NBR seals) Viscosity operating range from 15 to 75 mm 2 /s Max number of elements 1 ainting (on request) RIMER For different operating conditions, please contact our Sales Dept. (*) With electro hydraulic pilot heads the back pressure must not exceed 5 bar. For higher back pressure values the pilot flow must be unloaded to tank through a separate line ( p) 6/54

7 2 Inlet cover 2.1 Standard inlet cover 11.43" " RV SE/SF817 SD817 RR818 M " " " " " " " " Compensator (if requested) CV " " " O Ring side " " Approximate weight with SF817 + SD817 + RR818: 7,5 kg / lbs RV = signal adjustable relief valve CV = pilot tank line check valve (optional) SD817 = pilot oil supply cut off valve (optional) orts Size SE/SF817 = signal unloading solenoid valve (optional) RR818 = pilot oil supply pressure reducing valve (optional) hreads 1 (Optional) 1 2 M BS 3/4" 1" 3/4" 1/4" 1/4" 1/4" 1/4" Metric M27x2 M33x2 M27x2 M14x1.5 M14x1.5 M14x1.5 M14x1.5 UNF SAE12 SAE16 SAE12 SAE6 SAE6 SAE6 SAE6 7/54

8 2.1.2 Systems with fixed displacement pump Examples With relief valve With relief valve + signal unloading valve + pilot tank line check valve With relief valve + signal unloading valve + pilot oil supply pressure reducing valve + pilot tank line check valve p 1 p 1 p M With relief valve + signal unloading valve + pilot oil supply pressure reducing and cut off valve + pilot tank line check valve Standard inlet cover Gear ump version hree way inlet compensator SD spring 1 2 p Flow [l/min] 8/54

9 2.1.3 Systems with pump Examples With relief valve 2 With relief valve + signal unloading valve 2 With relief valve + signal unloading valve + pilot oil supply pressure reducing valve + pilot tank line check valve 2 1 p 1 p 1 p M M With relief valve + signal unloading valve + pilot oil supply pressure reducing valve + pilot tank line check valve and cut off valve With pilot oil supply pressure reducing valve + pilot tank line check valve With pilot oil supply pressure reducing valve + cut off valve + pilot tank line check valve p p p /54

10 2.2 Inlet cover with priority for steering " idr " " " S 11.43" " " " 2.5" O Ring side " " " SD " RV RR " " riority valve for steering Approximate weight with RV, SD817, RR818: 7,8 kg / 17,2 lbs CV RV = signal adjustable relief valve CV = pilot tank line check valve SD817 = pilot oil supply cut off valve (optional) orts size RR818 = pilot oil supply pressure reducing valve (optional) hreads S 1 (optional) idr BS 3/4" 1/2" 1" 3/4" 1/4" 1/4" Metric M27x2 M22x1,5 M33x2 M27x2 M14x1.5 M14x1.5 UNF SAE12 SAE1 SAE16 SAE12 SAE6 SAE6 1/54

11 2.2.2 Systems with priority function for steering Examples With pilot oil supply pressure reducing and cut off valves With pilot oil supply pressure reducing valve and check valve ( accumulator port) idr idr p p S S M M /54

12 3 Elements 3.1 Local compensator element KC": with local compensator (for functions with load holding valves on the cylinder) KL": with local compensator and check function (for functions without load holding valves on the cylinder) Anti shock anticavitation service port valve cavity " B " 1.81" A " 1.91" 23.91" Approximate weight with spool, positioner 349, lever L1, element service port valves and compensator : 4,26 kg / 9,39 lbs Lever interface MAN" Electro hydraulic interface EH" 3.2 Local check element: KU": for functions with load holding valves on the cylinder KD": for function without load holding valves on the cylinder " B " 1.81" A 1.91" 1.91" Approximate weight with spool, positioner 349, lever L1, service port valves and check valve: 4,26 kg / 9,39 lbs 3.3 orts size Lever interface MAN" hreads Standard A/B On demand Electro hydraulic interface EH" BS 3/4" 1/2" Metric M27x2 M22x1,5 UNF SAE12 SAE1 12/54

13 3.4 Element hydraulic schemes KU KD KC KL Local check Local check Local compensator Local compensator + check function p p p p Ó Ó Ó ÓÓ B A B A B A B A Local check + service port valves Local check + service port valves Local compensator + service port valves Local compensator + check function + service port valve p p p p B A B A B A B A 3.5 Seal kit Seal kit code: KC/KL Versions KU/KD Versions 13/54

14 4 Spools ype of circuit Flow to port A" x1 i.e.: 4 = 4 l/min A 4 6 Application or S * Flow to port B" x1 i.e.: 6 = 6 l/min Example of symmetric spool : A11 Example of not symmetric spool: A18 * = reduced overlap/high metering spools S = standard overlap Low leakage spool to be used in applicationswithout load holding valves ** R = linear metering with soft start for rotation M = high metering at the beginning of the stroke Note: contact our Sales Dept. for any combination in asymmetrical spools R Specific design** Ref Nominal Flow (13 bar margin) 2 15 l/min 3 25 l/min 4 4 l/min 6 6 l/min 8 8 l/min 1 1 l/min l/min l/min MAN spool version EH spool version Specific design for manual controls Specific design for hydraulic and electro hydraulic controls Spool ype Hydraulic schematic Features A 1 AB 2 A/B ports closed to tank C 1 2 AB A/B ports connected to tank Motor spool D 1 A B 2 B port connected to tank A port closed L 1 2 A B A port connected to tank B port closed Z A B Floating positions pulling the spool A B W Floating positions pushing the spool 1 2 A S Single effect 14/54

15 4.1 Spools metering he metering curves have been recorded with the standard pressure margin of 13 bar Flow [l/min] Flow [l/min] ,5 Stroke [mm] Manual spools: /M Hydraulic proportional spools: EH OS iloting pressure [bar] A1515 A1515M A1212M A11 A88 A66 A1515 A1212 A11 A88 A66 Flow [l/min] Flow [l/min] ,5 Stroke [mm] Manual spools: /R Hydraulic proportional: /R EH OS iloting pressure [bar] A44 A33 A22 A44 A33 A22 2 Flow [l/min] Hydraulic proportional spools: S EH OS iloting pressure [bar] A1515S A1212S A11S A88S A66S Flow [l/min] Hydraulic proportional: S EH OS iloting pressure [bar] A44S A33S 2 15/54

16 Not symmetric spool assembling Example A1512M (*) (*) B A B A EL.34KC23A EL.34KC23A B port is always on the standard lever side printed on the body (*) Note: Contact Sales Dept. for any desired combination 16/54

17 5 Valves 5.1 signal adjustable relief valve RV Nm " Nm 2 ø.8 Q ø.5 M M18x1.5 6H ø13.8 H ø ø Q ø.8 3 Q 45 ressure setting range bar (SI) 15 3 (217 43) 35 ype Code RV** M 2± ± bar 27 bar ± min 19 max ressure [bar] bar 23 bar 21 bar 21 6 ø ø1 H (rof.4.5) ø.8 Q Flow [l/min] 5.2 ressure reducing valve RR Nm ype Code Works in combination with VALV RR818/21 F EHC positioner VALV RR818/3 F EHO positioner Filter " 17/54

18 ø.5 B ø.8 A ø.8 A ± Ø6 Ø5 A ressure [bar] ø ø /8"UNF 2B(SAE1) ø17.5 H ø15.9 H Ø Flow [l/min] (bar) 45 A ø.8 A (2) B ± ±.1 A ressure [bar] Flow [l/min] 5.3 Anti shock and anti cavitation valves UC ressure [bar] ressure [bar] A/B VC Nm Nm 8.31" Antishock bar 3 26 bar bar 2 15 bar bar Flow [l/min] Anticavitation Flow [l/min] ressure setting bar (SI) Code 4 (58) (87) (116) (188) (23) (217) (232) (246) (261) (29) (3) (319) (333) (362) (375) (39) (45) (42) (46) (49) VC (plug) IMORAN!: he UC anti shock valve is designed to absorb shock effects. herefore, it should not be used as pressure relief valve he dedicated cavity is machined on request only For the cavity see chapter /54

19 5.4 Anti cavitation valves C ype Code C VC (plug) A/B Nm 8.31" he dedicated cavity is machined on request only For the cavity see chapter 5.1 A/B ressure [bar] Flow [l/min] 5.5 signal normally open unloading valve (SF) Nm 24 ø ø ø /4" 16UNF 2B (SAE8) ø12.7 H ø.5 Q ø ± Q " Ø ± Voltage Mechanical part only Solenoid 12 VDC VDC ø9 max= 35 bar 5.6 signal normally open unloading valve with manual override (SE) Nm 24 ø ø ø /4" 16UNF 2B (SAE8) ø12.7 H ø.5 Q ø " override ±.2 Q 1.6 Ø ± Voltage Mechanical part only Solenoid 12 VDC VDC ø9 max= 35 bar 19/54

20 5.7 signal normally closed unloading valve (SF normally closed) Nm 24 ø ø ø /4" 16UNF 2B (SAE8) ø12.7 H ø.5 Q ø ± Q Ø ± " Voltage Mechanical part only Solenoid 12 VDC VDC ø9 max= 25 bar 5.8 ilot oil supply cut off valve Nm 24 ø26 ø ø.8 V V 3/4" 16UNF 2B(SAE8) ø.5 U ø ø.8 V ø ø.8 V U rid Ø6 2.5±.2 Ø rid " Voltage ype Mechanical part only Solenoid Code 12 VDC SD817/3CN VDC ø5 ø13.5 2/54

21 5.9 Coils for solenoid valves ".96".51" Wire class H (VDE58) Coil insulation F I65 (DIN45) Duty rating ED 1% Connector style AM " " Bi directional diode 6 K E33 CA Voltage tolerance ± 1% Diode Weight,19 Kg Supply voltage Nominal coil voltage ower (Watt) Resistance (Ohm) Ambient emperature Current (Ampere) Ambient emperature Coil Code 12 V DC V DC signal flow compensated drain valve (VRC) ype Code VALV VRC D., Nm " 5.11 line manual shut off valve (NV1) Nm 24 ype Code VALV NV " " o close the signal drain line only when the valve is fed through a hand pump (emergency function). Supplied normally open. Approximately 4 turns to close. 21/54

22 5.12 roportional pressure reducing valve / ON OFF directional valve 3 Ø21.1 Ø 32 5 mesh p " " Ø Ø3.5 Ø n.2 Ø 4.5 U 33 roportional EHO version Reduced pressure (bar) vs, current (ma) Ø5 Ø6 Ø Ø Electro hydraulic specifications roportional U ON OFF U p p Nominal flow rate 4 l/min (1 GM) 6 l/min (1.5 GM) Max inlet pressure 35 bar (5 SI) Rated supply voltage 12 VDC ±1% Current supply characteristic WM (ulse width modul.) Superimposed dither frequency 1 to 15 Hz Degree of protection I67 Max power consumption 11 W 2 W Coil resistance 5.4 Ohm 7.2 Ohm Response time < 8 ms from 3 to 45 ms Leakage < 15 cc/min. at 35 bar and 8 C (<.9 cu:in./min. at 5 psi and 176 F) Duty cycle ED 1% Connector ype AM Junior timer (AM ) Connector colour BLUE BLACK Code (*) (*) nr. 2 screws M4x12 are not included 22/54

23 6 Levers 6.1 Standard lever group Code: L M1 M1 3 4 floating stroke 1 2 standard stroke L3 2 1 Body Interface Spool type Manual Manual 25.98" " " mm Lo inches ype Code Lo AL AL Nm " " M1X AL3 AL Manual joystick control Code: Nm Nm pivot M12x1.75 threaded hole " " Body Interface Spool type 28.5 AL1 Code: M12X Manual Manual M12x1.75 Lo=25 23/54

24 ivot L133 L134 L135 L A2 A1 B2 B1 A2 B2 B1 A1 B1 A1 A2 B2 B1 A2 B2 A1 L133 L134 L135 L ".41" " 33.41" 8.31" 8.31" " " 24/54

25 6.3 Joystick control L26 46 with integrated locking system Code: Nm 5 Body Interface Spool type Nm pivot L26 Manual Manual A1 Locked M12x1.75 Unlocked M12x1.75 A2 B2 B1 min max L46 B2 B1 A1 M12x1.75 A " 25/54

26 6.4 ressurised positioner and lever (EHO EHC functions) L 3 = without lever adaptor = with lever adaptor A = with lever adaptor and adjustable stroke ype: 1 = in combination with EHO positioner 2 = in combination with EHC positioner 3 = in combination with EHC positioner Suggested in combination with SD817 4 = in combination with EHC positioner predisposed for lever adaptor (not included) ressurised cap type L** L Force [N] Springs 616 2, 56 18, 54 16, , , 336 1, , 168 6, , 56 2,,,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 Stroke [mm] iloting pressure [bar] Code L1: (EHO) Code L2: (EHC) Code L3: (EHC) Nm " " " 1.34" " Body Interface Electro hydraulic Spool type EH ressurised cap L4 redispose for lever adaptor (not included) Code: (EHC) Nm " 21.83" Body Interface Spool type " " Electro hydraulic EH 26/54

27 6.4.3 ressurised cap L** With lever adaptor Code L1: (EHO) Code L2: (EHC) Code L3: (EHC) 2 1 Body Interface Spool type 9.35" Nm " 1.39" Electro hydraulic B EH M " A " C A: standard position B, C: possible alternative adaptor positions ressurised cap LA** With lever adaptor + adjustable spool stroke Code LA1: (EHO) Code LA2: (EHC) Nm " 1.39" 6 B A M " 6 C " A: standard position B, C: possible alternative adaptor positions Max admitted lever force/torque for all the lever versions Lo M8x1.25 Max admitted torque : 4 Nm Lo mm inches ype AL1 Code AL AL AL /54

28 7 ositioners 7.1 Spring return to neutral position Nm " Nm ype Code Spring Colour Force [N] SRING FORCE SROKE DIAGRAM ,5 Stroke [mm] RED BLACK YELLOW GREEN WHIE Body Interface Manual Spool type Manual 7.2 Detent in floating position and spring return to neutral from position 1 and Nm Body Interface Spool type Nm " Manual Manual ype Code Main spring Detent spring RED BLACK 28/54

29 7.3 Electro magnetic detent (EMD) A pre feeling (force increase) signals the operator that the detent position is going to be engaged Detent in position Detent in position Nm Nm Nm Nm " " DEEN Nm " " DEEN Operating features COIL Nominal voltage: 12 VDC ± 1% ower rating: 7 W Electrical resistance when holding (2 C): 21 ± 1.5 Ohm: Min. solenoid axial hold force: 26 N Duty cycle: 1% Standard cable length: 5 mm Body Interface Manual Spool type Manual ype Code Spring Voltage Min. holding force Connector Detent position RED 12 VDC 137 N RED 12 VDC 137 N DEUSCH D6 2S DEUSCH D6 2S /54

30 7.4 Hydraulic controls OS52 62 OS5 6 A B 1/4" BS std lever side 1/4" BS Nm Nm " 2.5" 1 2 ype Code max= 3 bar (43 SI) Body Interface Spool type ilot pressure [bar] OS Manual EH Stroke [mm] OS he metering area depends on the type of spool (see metering curves 4.1) ilot pressure [bar] Stroke [mm] 3/54

31 7.5 Hydraulic control + floating position OS53 6 OS Nm A B 1/4"BS std lever side 1/4"BS Nm " 2.5" ype Code max= 3 bar (43 SI) Body Interface Spool type ilot pressure [bar] Stroke [mm] Manual EH he metering area depends on the type of spool (see metering curves chapter 4.1) 31/54

32 7.6 Electro hydraulic open loop proportional / ON OFF control (EHO) Complete ROORIONAL scheme Complete ON OFF scheme p p p p p p Simplified ROORIONAL scheme 1 2 Simplified ON OFF scheme 1 2 p p p p see 5.12 ressurised lever not included see Nm Nm " 6.1" 1.81" 5 Body Interface Spool type Electro hydraulic EH Control ype Code Voltage Connector roportional VDC ON OFF VDC AM AM Spring characteristic curves obtained with L1, L1, or LA1 spring lever / positioner see 6.4 ressure [bar] EHO standard spring curve ,5 Stroke [mm] Metering stroke Ref to A**** spools Current [ma] 32/54

33 7.7 Electro hydraulic closed loop proportional control Do not disassemble the module from its interface Weight: approximately 5,5 Kg / 12,1 lbs " " " " Nm " " Body Interface Spool type Spool Stroke A (mm) Spool Stroke B (mm) 2 1 Electro hydraulic EH Imput Voltage Signal (V) Code ype Description Control type and output Connector colour Scheme FD6 D/A5 1S C1 Digital control with +5V output supply voltage Blue FD6 D/AF 1S C1 Digital control with spool position feed back Green On demand FD6 D/CO 1S C1 Digital control with CAN bus interface Black Module features Hydraulic specifications Electrical specifications Max supply pressure 35 bar Operating voltage 8 3 VDC Min supply pressure 12 bar Max current consumption 75 ma/section Max back pressure 1.5 bar Analog input impedance >4 kohm ilot flow requirement.2 lt/section ypical ctrl pot resistance 1 1 kohm Oil temperature range 2 / +95 C Analog input signal 5 V Oil viscosity range 3 65 cst Neutral position dead band from 2.25 to 2.75 VDC Filtration 18/15 (ISO 446) Operating temperature 2 / +15 C Signal cut off is trigged at Degree of protection <.25 V and > 4.75 V I68 Deutsch Mod. D4 4 compatible connector ype IN A5 + ower source + 5V output supply voltage Control signal ower source (GND)...AF + ower source Sensor feed back output signal Control signal ower source (GND) CO + ower source CANL CANH ower source (GND) 33/54

34 7.8 Electro hydraulic closed loop proportional control Application with manual joystick Dedicated body is requested Do not disassemble the module from its interface Body Interface Spool type " " EH + MAN Manual " " " " ositioner spring is included Spool Stroke A (mm) Imput Voltage Signal (V) Spool Stroke B (mm) Code ype Description Control type and output Connector colour Scheme FD6 D/A5 1S M1 Digital control with +5V output supply voltage Blue FD6 D/AF 1S M1 Digital control with spool position feed back Green On demand FD6 D/CO 1S M1 Digital control with CAN bus interface Black Hydraulic specifications Max supply pressure 35 bar Min supply pressure 12 bar Max back pressure 1.5 bar ilot flow requirement.2 lt/section Oil temperature range 2 / +95 C Oil viscosity range 3 65 cst Filtration 18/15 (ISO 446) Operating temperature 2 / +15 C Electrical specifications Operating voltage Max current consumption Analog input impedance ypical ctrl pot resistance Analog input signal Neutral position dead band Signal cut off is trigged at Degree of protection 8 3 VDC 75 ma/section >4 kohm 1 1 kohm 5 V from 2.25 to 2.75 VDC <.25 V and > 4.75 V I68 Deutsch Mod. D4 4 compatible connector ype IN A5 + ower source + 5V output supply voltage Control signal ower source (GND)...AF + ower source Sensor feed back output signal Control signal ower source (GND) CO + ower source CANL CANH ower source (GND) 34/54

35 8 End covers 8.1 Blanking plate (... series) VRC VRC " " " " " " " 16.63" " " p1 (option) p2 (option) ls M12x1.75 (22 mm depth, see note*) 11.43" VRC= flow control drain valve hreads ls p (option) BS 1/4" 1/4" Metric M14x1,5 M14x1,5 UNF SAE6 SAE6 With flow control valve Internal drain p With flow control valve External drain p * M6 SEI screw plug (*) ls ls Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 35/54

36 8.2 Blanking plate with flow control drain valve + line manual shut off valve (... series) NV " " p1 (option) ls " " p2 1.44" 156 (option) " 1.85" " 2.48" M12x1.75 (22 mm depth, see note*) ".63" 11.43" VRC= flow control drain valve NV1= line manual shut off valve hreads ls p (option) BS 1/4" 1/4" Metric M14x1,5 M14x1,5 UNF SAE6 SAE6 With line manual shut off valve Internal drain p With line manual shut off valve External drain p * M6 SEI screw plug (*) ls ls Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 36/54

37 8.3 End cover with tank line ports (... series) " " " " " " " " " " p1 (option) 1.39" " " " " ".93" p2 (option) " VRC NV1 CV M12x1.75 (22 mm depth, see note*) 4 CV = pilot tank line check valve VRC= flow control drain valve NV1= line manual shut off valve (option) hreads ls p (option) BS 3/4" 1 3/4" 3/8" 1/4" Metric M27x2 M33x2 M27x2 M18x1.5 M14x1.5 UNF SAE12 SAE16 SAE12 SAE8 SAE6 With internal drain + pilot tank line check valve p With Manual shut off valve + pilot tank line check valve p With external drain + pilot tank line check valve p ls ls ls ls Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 37/54

38 8.4 End cover with relief valve and tank line ports (... series) RV** " 3 5 ls " " " " " " " p1 (option) 11.43" " " 3.78" " " p2 (option) RV** " " VRC CV M12x1.75 (22 mm depth, see note*) RV = signal adjustable relief valve CV = pilot tank line check valve VRC = flow control drain valve hreads 3 5 ls p (option) BS 1" 3/4" 3/8" 1/4" Metric M33x2 M27x2 M18x1.5 M14x1.5 UNF SAE16 SAE12 SAE8 SAE6 With relief valve + pilot tank line check valve p 3 5 Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 38/54

39 8.5 End cover with 3 way compensator (C... series) Used in combination with priority for steering inlet cover allows to unload to tank the full flow of a fixed displacement pump or the stand by flow of an pump. he compensator spring must be chosen depending on the type of pump. 3 way comp ".35" " 2 ls " " " " " VRC 13.51" " p1 (option) ".29" p2.63" 21 (option) 7.91" " " 3 way comp CV M12x1.75 (22 mm depth, see note*) 3 way comp = main compensator CV = pilot tank line check valve VRC = flow control drain valve hreads 3 2 ls p BS 1" 3/4" 3/8" 1/4" Metric M33x2 M27x2 M18x1.5 M14x1.5 UNF SAE16 SAE12 SAE8 SAE6 With flow control drain valve and internal drain + pilot tank line check valve p With flow control drain valve and external drain + pilot tank line check valve p ls Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 39/54

40 8.6 Sliding function end cover specific for backhoe application (S... series) " VRC 5 ls EV " " " " 13.51" " " " " VRC p1 1.8".29" (option) " " ".93" C p2 (option) 16.63" SF 1.39" M12x1.75 (22 mm depth, see note*) SF = sliding frame release lock solenoid valve VRC = flow control drain valve CV = pilot tank line check valve (option) hreads 4 3 ls (option) C p (option) BS 3/4" 1 3/8" 1/4" 1/4" 1/4" Metric M27x2 M33x2 M18x1.5 M14x1.5 M14x1.5 M14x1.5 UNF SAE12 SAE16 SAE8 SAE6 SAE6 SAE8 Without flow control drain valve With flow control drain valve Without flow control drain valve + pilot tank line check valve With flow control drain valve + pilot tank line check valve p p p p Ó ÓÓ Ó Ó C ls C ls C ls C ls Attention: * o handle the complete valve block use the M12x1,75 threaded hole. For the lifting operations use proper accessories like eye bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and without giving sudden accelerations. 4/54

41 9 Suitable applications (Examples) elehandlers Local compensator (KC) Local check (KU) p p Wheel Loaders B A B A Local compensator + check (KL) Local check (KD) p p Backhoe Loaders ÓÓ B A B A 41/54

42 9.1 elehandlers Assembling positions / controls flexibility Closed loop controls for more precise operations and electronic management of machine safety functions. Open loop controls for a high degree of freedom in terms of assembling position. ls Direct manual joystick compact configuration suitable to be assembled on the cabin side Customised inlet covers with additional functions 1 BOOM IL EXEND AUX1 ROAION AUX2 2 p p p p p p A B A B A B A B A B A B 42/54

43 9.2 Wheel loader Assembling positions / controls flexibility Direct manual joystick For a cost effective solution INLE 2 p COVER B1 A1 AUXILIARY BOOM BUCKE OION ls p p B2 A2 B3 A3 p B4 A4 roportional controls for a high degree of freedom in terms of assembling position 1 M 1 43/54

44 9.3 Backhoe loader Assembling positions / controls flexibility Front loader basic Backhoe loader basic p p2 p1 Front loader hydraulic / electro hydraulic controlled Backhoe loader hydraulic controlled Backhoe loader electro hydraulic controlled ELESCOIC BOOM SWING BUCKE DIER SAB RIGH SAB LEF AUX p p 1 M B A B A B A B A B A B A B A B A 3 ls p p p p p p 44/54

45 1 Composition of ordering code 1.1 Std inlet cover E S 3 4 V E S 3 4 F S E 2 1 S D A M C V E S 3 4 F S F 3 A M C V F = inlet cover for systems with fixed displacement pump V = inlet cover for systems with pump " OR HREAD 3/4" BS = 2 SAE12 = 4 M27x2 = 6 Different = 9 Inlet cover version (do not fill) = NO compensator ( pump) 13 = main compensator 13 bar spring relief valve pressure setting (RV) = not requested i.e. 27 = 27 bar see 5.1 signal, solenoid unloading valve (Normally open) = not requested SE = with manual override SF = without manual override ilot supply pressure reducing valve RR818 = not requested 21 = 21 bar (suitable for EHC positioner) 3 = 3 bar (suitable for EHO positioner) ilot oil supply cut off valve = not requested SD817 = without manual override Voltage: = without coil (coils) 12 = 12 VDC 24 = 24 VDC Connector style (the male connector is not included) = coil not requested AM = AM DIN = DIN 4365 = not requested CV = pilot tank line check valve 45/54

46 1.2 riority for steering inlet cover E S 3 4 S S D A M C V E S 3 4 S S D A M C V E S 3 4 S S = inlet cover for systems with pump and priority function for steering " OR HREAD 3/4" BS = 2 SAE12 = 4 M27x2 = 6 Different = 9 Inlet cover version (do not fill) 11 = steering compensator 11 bar spring relief valve pressure setting (RV) = not requested i.e. 27 = 27 bar see 5.1 ilot oil supply pressure reducing valve = not requested 21 = 21 bar (suitable for EHC positioner) 3 = 3 bar (suitable for EHO positioner) ilot oil supply cut off valve = not requested SD817 = without manual override Voltage: = without coil 12 = 12 VDC 24 = 24 VDC Connector style (the connector is not included) = coil not requested AM = AM DIN = DIN 4365 = not requested CV = pilot tank line check valve 46/54

47 1.3 Elements E L. 3 4 K C 2 1 C L 1 I E L. 3 4 K C 2 1 A 6 4 R 3 L 1 V C A 2 B E L. 3 4 K C 2 1 A L 3 U C A 2 3 B 2 3 Body version KC = local compensator KL = local compensator with check function KU = local check (function with load holding valves) KD = local check (function without load holding valves) OR HREADS 1/2" BS = 1 3/4" BS = 2 SAE1 = 3 SAE12 = 4 M22x1,5 = 5 M27x2 = 6 CEJN 6 = 7 CEJN 8 = 8 Different = 9 Element version (do not fill) Spool type (see chapter 4) Specific design ositioner (see chapter 7) Lever type (see chapter 6) Service port valves: UC = anti shock and anti cavitation valves C = anti cavitation valves A service port setting: (not requested) i.e. 25 = 25 bar B service port setting: (not requested) i.e. 25 = 25 bar I = spool inverted ositioner assembled on the standard lever side (omitted if not necessary) Std spool assembling position Inverted spools assembling position (the positioners are assembled on the std lever side) 47/54

48 1.4 Blanking plate end cover C O V R C N V 1 C O V R C L S B S C O V R C N V 1 L S B S = Blanking plate End cover version (do not fill) VRC = flow control drain valve Always necessary except when this function is provided elsewhere in the system = not requested NV1 = line manual shut off valve ls = external drain line (omitted if not requested) ls thread BS = 1/4" M = metric M14 SAE = SAE6 ilot line external drain: = not requested = if requested 48/54

49 1.5 End cover with tank line ports C O V R C N V 1 L S B S C V 2 7 C O V R C C V C O V R C N V 1 C V = With tank line 3 = tank line port 1/2" BS = 1 3/4" BS = 2 SAE1 = 3 SAE12 = 4 M22x1,5 = 5 M27x2 = 6 CEJN 6 = 7 CEJN 8 = 8 1" BS = 9 End cover version (do not fill) VRC = flow control drain valve. Always necessary except when this function is provided elsewhere in the system = not requested line NV1 = line manual shut off valve ls = external drain line (omitted if not requested) ls thread BS = 3/8" M = metric M18x1.5 SAE = SAE8 ilot line external drain: = not requested = if requested = not requested CV = pilot tank line check valve relief valve pressure setting (RV) = not requested i.e. 27 = 27 bar see /54

50 1.6 End cover with 3 way compensator C O 3 4 C V R C C O 3 4 C V R C L S B S C V C = With compensator 3 = tank line port 1/2" BS = 1 3/4" BS = 2 SAE1 = 3 SAE12 = 4 M22x1,5 = 5 M27x2 = 6 CEJN 6 = 7 CEJN 8 = 8 Different = 9 End cover version (do not fill) 3 = main compensator 3 bar spring (suitable for pump) 13 = main compensator 13 bar spring (suitable for gear pumps) VRC = flow control drain valve. Always necessary except when this function is provided elsewhere in the system ls = external drain line (omitted if not requested) ls thread BS = 3/8" M = metric M18x1.5 SAE = SAE8 ilot line external drain: = not requested = if requested = not requested CV = pilot tank line check valve 5/54

51 1.7 Sliding function end cover C O 3 4 S 9 1 V R C S F 1 2 A M C O 3 4 S 9 1 V R C S F 1 2 A M L S B S C V S = for sliding function 3 = tank line port 1/2" BS = 1 3/4" BS = 2 SAE1 = 3 SAE12 = 4 M22x1,5 = 5 M27x2 = 6 CEJN 6 = 7 CEJN 8 = 8 Different = 9 End cover version (do not fill) VRC = flow control drain valve. Always necessary except when this function is provided elsewhere in the system signal, solenoid unloading valve (Normally closed) = not requested SF = normally closed, without manual override Voltage: = without coil (coils) 12 = 12 VDC 24 = 24 VDC Connector style (the male connector is not included) = coil not requested AM = AM DIN = DIN 4365 ls = external drain line (omitted if not requested) ls thread BS = 3/8" M = metric M18x1.5 SAE = SAE8 ilot line external drain: = not requested = if requested = not requested CV = pilot tank line check valve 51/54

52 1.8 roduct identification plate ********* 9A : roduct Order Code 2 : Customer Code (only on request) 3 : Manufacturing Year and Month MADE IN IALY Manufacturing month Manufacturing year January 8A 9A A 1A 2A 3A 4A February 8B 9B B 1B 2B 3B 4B March 8C 9C C 1C 2C 3C 4C April 8D 9D D 1D 2D 3D 4D May 8E 9E E 1E 2E 3E 4E June 8F 9F F 1F 2F 3F 4F July 8G 9G G 1G 2G 3G 4G August 8H 9H H 1H 2H 3H 4H September 8I 9I 1I 2I 3I 4I October 8J 9J J 1J 2J 3J 4J November 8K 9K K 1K 2K 3K 4K December 8L 9L L 1L 2L 3L 4L 52/54

53 53/54

54 by Bucher Hydraulics S.p.A., I 421 Reggio Emilia All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. he information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue. Classification: /54