Directional Controls Soft Shift Directional Control …

1 soft Shift Directional Control ValveDG4S4-01-60-S** Design615 Revised 3/95 VICKERS Directional Controls2 Table of ContentsBasic Characteristics 4.. Mounting Interface 4.. Seals & Fluid Cleanliness4.. Model Code5.. Solenoids5.. Operating Data6.. Response Time7.. Orifice Changing Procedure7.. Performance Data8.. Installation Dimensions Spring Offset10.. Installation Dimensions Spring Centered 11.. Installation Dimensions Din4365012.. Electrical Data 13.. DGVM*-5 Subplate14.. 3 IntroductionThe DG4S4-01-60-S** directionalcontrol is a solenoid operated, 4-way, soft - Shift valve having a uniquefive-chamber spool end land configurationisolates the core tube volume from thevalve s tank cavity. This volume isdisplaced through an orifice in eachsolenoid armature to increase the shiftand dropout shock is greatly reduced bymetering the flow across the specialspool land as well as spool modulationproduced by the armature valve terminal box contains a bridgerectifier, allowing alternating current tobe applied directly to the , the solenoid winding sensesonly direct current, eliminating the in-rush characteristic of a standard & BenefitsDLow cost alternative to pilot-operatedand proportional interchangeable with anyNFPA D05, CETOP 5.

2 ISO 05 direct-solenoid operatedvalve design with contoured spool andcontrolled solenoid Shift in single or double armature solenoids for quieteroperation and long life with nodynamic seals to is housed in the terminaljunction box and is protected frommoisture and has plug-in construction and isheld on by a nut enabling quick coilvoltage interchange or service, withoutbreaking into the hydraulic solenoid prevents coil burnoutduring controlled rate of solenoid alternating input currentis converted to direct current through arectifier located in the terminal example: 110-120 50/60V AC and220-240 50/60V AC are converted to105V DC and 214V DC, larger diameter spool combined withfive-chamber body core passagesresults in lower pressure metering notches on the spoolenable precise Control of flow ratechange as the spool is spool permits manufacturingof a consistently rounder spool forbetter balance in the bore and lowerspool wear and less body design isolates thetank passages from the core tube sothat pressure spikes or surges are nottransmitted to the solenoid core fatique pressure rated at 250bar (3600 psi)DEasily interchangeable orifice plugsallow for fine tuning of valve Shift timeto each indicator lights are InformationBasic CharacteristicsMax.

3 Pressure ports P, A & B:Up to 250 bar (3600 psi) dependingon fluidMax. pressure port T: 70 bar (1000 psi)Max. flow rates Up to 75 l/min . (20 USgpm)depending on spoolOperating temp. 20 to 82 C(70 to 180 F)Fluid viscosity14-54 cSt .. (75-250 SUS)Mounting InterfaceISO 4401-05 CETOP 5 NFPA D05 Seals & FluidCleanlinessFluorocarbon seals are standard andare suitable for use with phosphateester type fluids or its blends, waterglycol, water in oil emulsion fluids andpetroleum oil. Refer to 694 for hydraulicfluid and temperature fluid condition is essential forlong and satisfactory life of hydrauliccomponents and systems. Hydraulicfluid must have the correct balance ofcleanliness, materials and additives forprotection against wear of components,elevated viscosity and inclusion of information on the correctmethods for treating hydraulic fluid isincluded in Vickers publication 561; Vickers Guide to SystemicContamination Control , available fromyour local Vickers distributor or bycontacting Vickers, filtration and theselection of products to Control fluidcondition are included in cleanliness levels usingpetroleum oil under common conditionsis based on the highest fluid pressurelevels in the Controls , regardless ofmanufacturer, will operate with fluidsshowing a higher cleanliness code.

4 Theoperating life of the Control , and othercomponents in the system, will be lesshowever. For maximum life and bestsystem performance, cleanliness codesas defined below should be other than petroleum, severeservice cycles or temperature extremesare cause for adjustment of thesecleanliness codes. See VickersPublication 561 for exact Pressure1000 psi 2000 psi 3000+ psi20/18/15 20/18/15 19/17/14 Spool notchesMetering inputRectifierSpools with contoured or notched landsare used to provide maximum Control of flowrate change as the spool is Shift speed is controlled by a meteringorifice in the solenoid. Three orifice sizesare available to meet your solenoids prevent coil burnout duringcontrolled rate of solenoid alternating current (120/60 or110/50) input is converted to through arectifier located in the terminal Principles5 Model Code34587691012111212 SealsBlank Standard sealsF3 Special sealsValve TypeD Directional Control valveG Manifold or subplate mounted4 Solenoid operatedS Sliding spool4 4-way flow directionElectrical AccessoriesBlank - For U type connectorsW Terminal boxLW Terminal box with lightsInterface01 ISO-4401-AC-05-4-A,NFPA D05, CETOP 5345671181012 Spool TypesA models 0, 2, 9B models 0, 2, 6, 8C models 0, 2, 6, 8 Spool/Spring ArrangementA Spring offset, P to AB Spring centered, solenoid a removedC Spring centered, three positionWet Armature Solenoid(s)(non-serviceable core tubes)

5 Blank Plug-in coilsU DIN 43650 coil(s)* withoutelectrical plug (non-rectified)U1 Connector fitted (DC only)U6 Connector fitted w/lights (DC only)U11 Connector fitted w/ rectifier & lights (AC only)U12 Connector fitted w/rectifierCoil Identification Letter(s)(See Solenoids below) soft Shift OrificeBlank Standard (.047) **.062 .062 .078 inch(see response times, page 7)Design NumberSubject to dimensions remain as shownfor designs 60 through AssemblyOmit for right-hand assembly withsolenoid a soft Shift SolenoidsS491 Standard valveS528 Canadian Standards Assoc. CSAcertification* Note that the U type coils are non-rectified and require a connector with rectifierwhen using AC current. A non-rectified connector must be used when supplying DC IdentificationLetterSolenoid Voltage RatingHoldingAmps(rms) VAC 60 Hz Rectified220 VAC 50 Hz 214 V 120 VAC 60Hz Rectified110 VAC 50Hz 105 VDCG12V DC non rectifiedH24 V DC non rectified4242** Not recommended for type 8 spool whenoperating at maximum flow and Data Note When solenoid a is energized, flow is P to A.

6 When solenoid b isenergized, flow is P to B . This is inaccordance with the ANSI SymbolCenter Condition A" ModelsSpring Offset B" ModelsSpring Centered C" ModelsSpring Centered02689 Standard (right hand) build shown. A solenoid BP TbbbbbbbaA BP TA BP TbabababA BA BP TP TA BP TA BP TA BP TA BP TA BP TA BP T Note Solenoid designations a and b areidentified on the diagram plate on theside of the SymbolsSolenoid EnergizingSpring centered and spring offset valveswill be spring positioned unless thesolenoid is energized continuously. NOTEAny sliding spool valve, if heldshifted under pressure for longperiods, may stick and not springreturn, due to silting. Therefore, it isrecommended that the valve becycled periodically to prevent thisfrom ProcedureApply a minimum of bar (50 psi) tankpressure. Shift either solenoid a or b.

7 Loosen manual actuators insolenoid ends until air is manual actuators. No furtherbleeding should be fully utilize the features of the softshift solenoid, the core tubes mustremain full of oil. The tank line must beplumbed so that the tank port is alwaysflooded with oil. Addition of a backpressure check valve may be requiredto prevent bleed TimeResponse times are increased over thatof a standard solenoid. These times areinfluenced by flow, pressure, appliedsolenoid voltage, oil and ambienttemperatures. Response times can befine tuned to the application by orificesthat are changeable via the manualactuator in the solenoid DG4S4-01**-60-S** valve comeswith a .047 inch diameter orifice asstandard. A .062 and a .078 inch orificesare also times shown below wereestablished with a system pressure of250 bar (3600 psi), flow of 38 l/min (10 USgpm), solenoid voltage at 100%of rating and 38 C (110 F) given response times weremeasured from the point of energization/de-energization to the point of firstindication of inlet pressure up to full system pressure isdependent on the system s compressedvolume and can vary with & Tool KitFor fine tuning Shift performance,orifices must be ordered following kit comes with:Two (2).

8 047, .062 and .078 inchdiameter (1) Installation (1) 5/32 hex (1) 3/32 hex #02 1191317 Response Time / Orifice Changing Procedure2302502102403301601602603002502 80380190200 ModelValve type200210190200300150140 Spring offsetSpooltypeSpool response (ms)ShiftReturnOrifice dia. (in.).047 .062 .078100100100100110120140140110150150160 1902008090908090100100 Orifice dia. (in.).047 .062 .078AC/B0290268 Spring centeredResponse TimeOrifice ChangingProcedureWARNINGB efore breaking a circuitconnection make certain that poweris OFF and system pressure hasbeen released. Lower all verticalcylinders, discharge accumulatorsand block any load whosemovement could generate all removed units and cap alllines to prevent the entry of dirt intothe Using a 5/32 hex key, remove manualactuator plug and spring from the endof solenoid (Tightening torque 55 65 lbf.)

9 In.)2. Insert extraction tool (878495) intosolenoid via the manual actuatoropening. Rotate tool until aligned andpush into slot in Using 1/2 wrench and tool to preventthe armature from rotating, insert 3/32 hex key down the center of tool andremove orifice Replace by the same method, tightening orifice snug to ensurebottoming of threads. Smaller orificesincrease response times. Largerorifices decrease response times. in. dia. orifice is standard in the ( in)Dimension required toremove orificeManual actuator plug & springwrench878495 extraction toolOrifice & tool kit 02 119131 For fine tuning Shift performance, orificesmust be ordered separately. The kitincludes (2) each of .047, .062, & .078 orifices, (1) installation tool, (1) 5/32"hex key and (1) 3/32" hex DataPressure DropsThe pressure drop curves giveapproximate pressure drop (nP) whenpassing 21 cSt (100 SUS) fluid ( specific gravity) through theindicated flow any other viscosity, the pressuredrop (DP) will change as follows:For any other specific gravity (G1), the pressure drop (DP1) will beapproximately.

10 DP1 = DP (G1/G)Viscosity cSt(SUS)14(75)32(150)43(200)54(250)65(30 0)76(350)87(400)% of DP (Approx)91111119126132137141 Pressure drop curve reference chartSpool typeCurve numbersP-A B-T P-B A-T P-T0C/B2C/B6C/B8C/B0A2A9A313411131511113 13411132521115--6---PRESSURE DROP - psidPRESSURE DROP - bar02040608010002 6 101418 2226 FLOW - USgpmFLOW - l/min02040608010012014016018020022024026 028065231420181614121086420 Pressure Drop Curves9 Performance DataMaximum Flow DataMaximum recommended flow data is for90% nominal voltage in a 4-way circuitwith cylinder ports either looped orblocked and containing 2,5 liter (.66 USgpm) compressed may vary when certainspools are used in 3-way flow chart referenceModel Spool type Curve number02902684561223AB/C** .047 orifice not recommended at maximum flow - psiPRESSURE - barFLOW - USgpm02 6 10 14 18 22 26020406080 100 FLOW - l/min05010015020025030010002000300040000 23 PRESSURE - barPRESSURE - psiFLOW - USgpm02 6 10 14 18 22 260 20406080100 FLOW - l/min30020025015010050010002000300040000 641510 Installation DimensionsSpring offset Spring centeredMillimeters (inches)Clearance requiredto remove knobClearance requiredto remove core tubeClearance requiredto remove coil46,8( )8,6(.)