Vickers® Proportional Pressure Relief Valve KBCG5 …

1 vickers Proportional Pressure Relief ValveTechnical CatalogKBCG5-3 10 Design2 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 ContentsIntroductionGeneral Description ..3 Basic Characteristics ..3 Features and Benefits ..3 Typical Section ..3 Functional Symbols ..3 Model 10 Application 12 This product has been designedand tested to meet specific standards outlined in theEuropean Electromagnetic CompatibilityDirective (EMC).For instructions on installation requirementsto achieve effective protection levels, seethis leaflet and the Installation WiringPractices for vickers Electronic Productsleaflet 2468. Wiring practices relevant tothis Directive are indicated byElectromagnetic Compatibility (EMC).3 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 IntroductionGeneral DescriptionThese compact two-stagepressure Relief valves offerextensive applicationpossibilities through theirability to control the pressuresetting in proportion to anapplied electrical integral amplifier allowsthe Pressure to be controlledfrom a low power commandsignal: either a voltage orcurrent command.

2 The amplifier is mounted in arobust metal housing andelectrical connections are viaan industry standard 7-pinplug. Factory-setadjustments ensure highreproducibility CharacteristicsMax. pressure350 bar (5000 psi)Max. flow rate40 L/min ( USgpm)Mounting face to ISO 6264-03-04 Note: Port B must beblocked by the mountinginterface - see installationdiagram for port A is used for pilot drainflow on external drain models shouldbe selected for applicationswhere a high T port pressureis required (up to 210 bar) orwhere T port pressuredisturbances are and Benefits Remote electricalproportional control ofpressure from a choice offive Pressure ranges. Excellent repeatability andstable performance. Low installed cost andspace requirement fromhigh power/size ratios. On-board rampadjustment. Model code selectableramp SectionFunctional Symbols4 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Model CodeVa l v e Ty p eKB Proportional Valve withintegral amplifier, B seriesC o n t r o l Ty p eC Pressure Relief ValveM o u n t i n gG Subplate mountedO p e r a t i o n5 Pilot operatedMounting Inte r fa c e3 ISO 6264-03-04P r e s s u r e R a t i n g40 40 bar100 100 bar160 160 bar250 250 bar350 350 barD a m p e rD Standard DamperM a n u a l O v e rr i d eZ No manual overrideD rain OptionT Internal drainBlank External drainAmplifier Control SignalM1 10 V control signalM2 4 to 20 mA control signalRamp Option4 Fast 5 Damped Amplifier Ty p eA StandardE l e c t r i c a l C o n n e c t i o nPC7 7 pin connector.

3 Without plug suppliedPE7 7 pin connector, withplug suppliedPH7 As PE7 but with pin 'C'used for enable signalPR7 As PC7 but with pin 'C'used for enable signalCoil IdentificationH 24 VDCT p o r t p r e s s u r e1 10 bar. Internal drain (T models)7 210 bar. External drain(non-T models)Design Number 1* series. Subject to change16151413121110987654321 WARNINGV alves with integralamplifiers aresupplied with or without themetal 7-pin vickers TM plug, part no. 934939, must becorrectly fitted to ensure thatEMC and IP67 ratings areachieved. The plug retaining nut mustbe tightened with a torqueof 2-2,5 Nm ( lbf ft) toeffect a proper seal. Typically 160 ms for 0-100%/100-0% signal(system dependent) Typically 420 ms for 0-100%/100-0% signal(system dependent)Standard test conditions are with antiwear hydraulic oil at 36 cSt (168 SUS) and 50 C (122 F)Maximum pressures:Internal drainExternal drainModel code [9] = TModel code [9] = blankPort P350 bar (5000 psi)350 bar (5000 psi)Port T10 bar (145 psi)210 bar (3000 psi)Port A* 10 bar (145 psi)*External drain portRated flow at p = 5 bar (73 psi):KBCG5V-340 L/min ( USgpm)Pilot flow0,4 -1,0 L/min ( - USgpm)Coil or amplifier rating24V x 36W max.

4 (22 to 34V including 10% peak-to-peak max. ripple)Command signal:Volts (see model code - [10] M1)0 to +10V or 0 to -10 VInput impedance47 k Common mode voltage to pin B 4 VCurrent (see model code - [10] M2) 4 to 20 mAInput impedance 100 Valve enable signal:Enable> (36V max)Disable < impedance 36 k 7-pin plug connectorPin DescriptionAPower supply positive (+)BPower supply 0V and current command returnCValve enable (PH7 & PR7)DCommand signal (+V or current in)ECommand signal (-V or current GND)FOutput monitor GProtective groundView of pins of fixed halfElectromagnetic compatibility (EMC):Emission EN 50081-2 Immunity (10 V/m) EN 50082-2 Monitor signal (pin F) V/amp solenoid currentOutput impedance10 k Pressure gain See graphsFactory setting: maximum with 100% command signalPressure override when relieving and when off-loadSee graphsLinearity, between 10% and 100% of rated Pressure <5%Hysteresis<5% (with factory-set dither)Repeatability+/-2% of rated pressureReproducibility, Valve -to- Valve (at factory settings): Pressure at 100% command signal+/-3% of rated pressureProtection.

5 ElectricalReverse polarity protectedEnvironmentalIE C60529, Class IP67 Mass (weight)3,45 kg ( )Mounting attitudeNo restriction, provided that the Valve is kept full of fluid through port VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Operating Data6 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Performance DataData is typical with oil at 36 cSt (168 SUS) and at 50 C (122 F)7 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Performance Data8 eaton VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Performance DataMODEL CODESTEP SIZE:RESPONSE TIME Pressure DEMAND(ms)M*-40-100%/100-0%16025 - 75%/75-25%10010-90%/90-10%140M*-50-100%/ 100-0%42025-75%/75-25%26010-90%/90-10%36 0 Step ResponseThe step response data inthe attached table should beused as a guideline only asresponse time in anyapplication will be systemdependant.

6 The response will besignificantly influenced bythe Valve operating flow rateas well as the volume of oilbeing VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 InstallationDimensionsWARNINGV alves with integralamplifiers aresupplied with or without themetal 7-pin vickers TM plug, part no. 934939, must becorrectly fitted to ensure thatEMC and IP67 ratings areachieved. The plug retaining nut mustbe tightened with a torqueof 2-2,5 Nm ( lbf ft) toeffect a proper VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Electrical InformationWARNINGAll power must beswitched off beforeconnecting or disconnectingany plugs. In valves with PH7 or PR7 type electrical DiagramWiringConnections must be madevia the 7-pin plug mountedon the amplifier.

7 See thisleaflet and Installation WiringPractices for vickers Electronic Products leaflet2468. Recommended cablesizes are:Power cables:For 24V supply:0,75 mm2(18 AWG) up to20m (65 ft)1,00 mm2(16 AWG) up to40m (130 ft)Signal cables:0,50 mm2(20 AWG)Screen (Shield):A suitable cable should haveat least 6 cores with pairs ofconductors individuallyscreened and an overallscreen. Cable outside diameter 8,0-10,5 mm ( inches). See connection diagrams onnext VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Electrical InformationTypical ConnectionArrangementsWARNINGE lectromagneticCompatibility (EMC)It is necessary to ensure thatthe Valve is wired up asabove. For effective protection theuser electrical cabinet, thevalve subplate or manifoldand the cable screens shouldbe connected to efficientground points.

8 The metal 7-pin connectorpart no. 934939 should beused for the integralamplifier. In all cases bothvalve and cable should bekept as far away as possiblefrom any sources ofelectromagnetic radiationsuch as cables carryingheavy current, relays andcertain kinds of portableradio transmitters, etc. Difficult environments couldmean that extra screeningmay be necessary to avoidthe interference. It is important to connect the0V lines as shown multi-core cable shouldhave at least two screens toseparate the demand signaland monitor output from thepower lines. Pin C may be connectedto ground or leftunconnected. Output monitor voltagepin F) will be referenced tothe power 0 volts (pin B). Note:In applications where thevalve must conform toEuropean RFI/EMCregulations, the outer screen(shield) must be connectedto the outer shell of the 7-pin connector, and thevalve body must be fastenedto the earth ground.

9 Properearth grounding practicesmust be observed in thiscase, as any differences incommand source and valveground potentials will resultin a screen (shield) VickersProportional Pressure Relief Valve KBCG5 -3, V-VLPO-MC012-E November 2009 Application DataHydraulic FluidsMaterials and seals used inthese valves are compatiblewith:Anti-wear petroleum oils ..L-HMNon-alkyl based phosphate esters ..L-HFDThe extreme operating rangeis 500 to 13 cSt (270 to 70 SUS) but the recommendedrunning range is 54 to 13 cSt(245 to 70 SUS). For furthertechnical information aboutfluids see ControlRequirementsRecommendations oncontamination controlmethods and the selection of products to control fluidcondition are included inpublication 9132 or 561, Guide to SystemicContamination Control .The book also includesinformation on the conceptof ProActive Maintenance.

10 The following recommenda-tions are based on ISOcleanliness levels at 2 m, 5 m and 15 products in this catalogthe recommended levels are:Up to 210 bar (3000 psi)18/16/13 Above 210 bar (3000 psi)17/15/12 Installation and Start-upGuidelinesThe Proportional valves inthis catalog can be mountedin any attitude but it may benecessary, in certaindemanding applications, toensure that the solenoids arekept full of hydraulic fluid. If this proves to be the caseany accumulated air can bebled from the solenoid bleedscrew. This task is easier ifthe Valve has been mountedbase downwards. Goodinstallation practice dictatesthat the tank port, and anydrain port, are piped so as tokeep the Valve full of fluidonce the system start-up hasbeen petroleum C (-4 F)Max ..+70 C (158 F)For fluids where limits areoutside those of petroleumoil, consult fluidmanufacturer or Eatonrepresentative.