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PVBZ基本模块技术文献版本修订历史目录概述 (3)剖视图 (4)功能 (5)技术参数 (6)PVP,泵侧模块-带T0口 (7)PVBZ,工作模块-带T0口 (8)PVB,工作模块-带T0口 (8)PVBZ,标准阀芯 (9)标准 FC- PVBZ阀芯 (电气和机械驱动) (10)标准 PVBZ悬浮阀芯 (电子驱动) (10)PVEH-F电气驱动 (10)PVST, 后端盖 (10)液压原理图 (11)驱动元件 (12)尺寸 (13)订购说明 PVBZ (14)订购说明 HPCO (15)© 2010 Sauer-Danfoss. 版权所有。
萨澳-丹佛斯对目录，说明书和其它出版物中可能存在的错误不负任何责任。
萨澳-丹佛斯有权不预先通知就更改其产品。
这同时也适用于已订购产品，尽管此类更改随后没有任何已认同的说明书中认为是必要的变化。
此资料中的所有商标都归属各自公司。
Sauer-Danfoss和Sauer-Danfoss标志为萨澳-丹佛斯集团商标。
2L1010371 • Rev CA • Jan 2010PVBZ基本模块技术文献PVBZ集成HPCO的PVP PVBZ模块是带有集成液控单向阀的工作模块。
PVBZ模块是为将集成了液控单向阀工作油口的泄露降到最低（低于1 cm3 [0.06 in3]每分钟)的应用而研发的。
PVBZ模块只能与本技术文献中提到的PVB工作模块和PVP泵侧模块结合使用，具有以下特征：• 集成低内泄液控单向阀• 集成热力安全阀• 标准 4/3（三位四通）阀芯• 4/4（四位四通）浮动阀芯• 阀芯可互换PVBZ（带独立回油口T0的PVB）模块是集成HPCO功能的PVG 32。
HPCO功能引导PVG 32阀组中多余的泵流通过HPCO口流到其它地方，如换向阀。
集成HPCO功能的新的PVP泵侧模块只能与本技术文献中提到的PVB、PVBZ和PVST模块配合使用，它具有以下特征：• HPCO功能• 优先保证PVG 32需要的流量• 节省油管概述3 L1010371 • Rev CA • Jan 2010PVBZ基本模块技术文献剖视图剖视图1 溢流阀2 先导油路减压阀3 压力表连接口4 堵头，开芯5 节流口，闭芯6 压力调节阀芯7 堵头，闭芯8 LS 连接口9 T0 连接口10 堵头 - 若T0内置，则移除 (仅157B5130,157B5131, 157B5330 和157B5331 )11 LS 信号12 POC先导阀13 梭阀14 液控单向阀, POC15 主阀芯16 压力补偿器17 梭针18 A和B口的最大油量调节螺钉19 PVE的先导油源20 独立回油口(T0)V310138.A4L1010371 • Rev CA • Jan 2010PVBZ基本模块技术文献功能功能当主阀芯(15)处于中位时，液控单向阀(POC)在弹簧力和工作压力的共同作用下保持关闭，工作压力经过阻尼孔作用于POC(14)的弹簧侧。
PV100 SERIES ELECTRONICALLY CONTROLLEDPROPORTIONAL VALVESUnpackingRemove the Packing List and verify that you havereceived all equipment, including a PV100 Seriesproportional valve, and instruction sheet. If youhave any questions about the shipment, please callthe Customer Service Department at 1-800-622-2378or 203-359-1660. We can also be reached on theInternet at e-mail:******************When you receive the shipment, inspect thecontainer and equipment for signs of damage. Noteany evidence of rough handling in transit.Immediately report any damage to the shippingagent.General DescriptionThe OMEGA®PV100 Series ElectronicallyControlled Proportional Valves are two-waynormally closed valves. When the valve isdeenergized, pressure is sealed off by the force ofthe plunger assembly return spring and the seal inthe plunger assembly. When the valve is energized,the plunger assembly moves upward, permittingflow through the valve. The valve is direct acting.Higher current or control signal results in moreplunger movement and more flow.InstallationPort IdentificationApply inlet pressure to the port marked “P”.Mounting Position and Pressure Limits Valves can be mounted directly on piping and aredesigned to operate in any position. Two 8-32tapped mounting holes 1⁄4” deep are provided in thebase of the body. Line pressure must not exceed thenameplate rating.PipingRemove closures from ports and connect pressurelines to proper ports. All valves have 1⁄8" NPTFfittings. Tightening torque on the 1⁄8" NPT shouldnot exceed 38 in-lbs.Media FiltrationFiltration of air lines is recommended. Install thefilter in the inlet side as close to the valve aspossible. These valves have no sliding fits and aregenerally not sensitive to a small amount of foreign material, however, they do contain soft rubberinserts. Dirt or foreign material in the media maycause excessive leakage, excessive wear, or inexceptional cases, malfunction.Electrical ConnectionElectrical supply must conform to nameplaterating. Connect coil leads to DC voltage usingstandard electrical practice.Black wire Common Ground(to Power Supply and Control) Red wire(+) DC Positive Power SupplyGray wire(+) Control SignalIf the coil housing is located in an inconvenientposition, the housing nut can be loosened and thehousing rotated to any convenient position. Thenre-tighten the nut to 13 to 35 in-lbs.Coil Housing TemperatureStandard valves are supplied with coils designedfor continuous duty service. Normal free spacemust be provided for proper ventilation. When coil is energized continuously for long periods of time, the coil housing will become hot 54 to 71°C (130 to 160°F). The coil is designed to operate continuously under these conditions. Any excessive heating will be indicated by smoking and/or odor of burninginsulation.LubricationLubrication is not required.Maintenance InstructionsValves are calibrated at the factory and should notbe disassembled by the user.Available ModelsFlow Ranges,SCCM Model Orifice Maximum At Maximum At Number Millimeters Inches C v Pressure Pressure10 PSI PV101-(*).801/320.02200 PSI0-50,0000-8,000 PV102-(*) 1.193/640.045100 PSI0-65,0000-17,000 PV103-(*) 1.591/160.0860 PSI0-75,0000-30,000 PV104-(*) 1.985/640.1240 PSI0-80,0000-45,000 *Specify Control Signal:MA for 4-20 MADC5V for 0-5 VDC10V for 0-10 VDCDimensions2SpecificationsValve Type:2-Way Normally ClosedWetted Parts:Stainless Steel with Viton SealsPower:12-24 VDCPower Consumption:7 Watts MaximumControl Signals:0-5 VDC, 0-10 VDC, 4-20 MADCAmbient Temperature Range:-10 to 50°C(14 to 122°F)Media Temperature Range:-18 to 82°C(0 to 180°F)Linear Control Range:15-85% of Full FlowResponse Time for Complete CycleOff - Full Open - Off:40 msec @ 0 pressure100 msec @ maximum pressureRepeatability:±5% when in operating linear control rangeElectrical Connection:18" color-coded lead wiresWiring:Red DC Power SupplyGray Control Signal (+)Black Common (to Power and Control) Pressure Connections:1⁄8" NPTFEnclosure:General Purpose, NEMA-13It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.WARNING: These products are not designed for use in, and should not be used for, human applications.WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase.OMEGA’s WARRANT Y adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR)number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling,improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’scontrol. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY : The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise,shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential,incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANT Y/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.Servicing North America:U.S.A.:One Omega Drive, Box 4047ISO 9001 CertifiedStamford, CT 06907-0047Tel: (203) 359-1660FAX: (203) 359-7700e-mail:**************Canada:976 BergarLaval (Quebec) H7L 5A1, Canada Tel: (514) 856-6928FAX: (514) 856-6886e-mail:*************For immediate technical or application assistance:U.S.A. and Canada:Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA ®Customer Service: 1-800-622-2378 / 1-800-622-BEST ®Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN ®TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGAMexico:En Espan ˜ol: (001) 203-359-7803e-mail:*****************FAX: (001) 203-359-7807**************.mxOMEGAnet ®Online Service Internet e-mail***********************Servicing Europe:Benelux:Postbus 8034, 1180 LA Amstelveen, The Netherlands Tel: +31 (0)20 3472121FAX: +31 (0)20 6434643Toll Free in Benelux: 0800 0993344e-mail:*****************Czech Republic:Frystatska 184, 733 01 Karviná, Czech Republic Tel: +420 (0)59 6311899FAX: +420 (0)59 6311114Toll Free: 0800-1-66342e-mail:*****************France:11, rue Jacques Cartier, 78280 Guyancourt, France Tel: +33 (0)1 61 37 2900FAX: +33 (0)1 30 57 5427Toll Free in France: 0800 466 342e-mail:**************Germany/Austria:Daimlerstrasse 26, D-75392 Deckenpfronn, GermanyTel: +49 (0)7056 9398-0FAX: +49 (0)7056 9398-29TollFreeinGermany************e-mail:*************United Kingdom:One Omega Drive, River Bend Technology CentreISO 9002 CertifiedNorthbank, Irlam, Manchester M44 5BD United Kingdom Tel: +44 (0)161 777 6611FAX: +44 (0)161 777 6622Toll Free in United Kingdom: 0800-488-488e-mail:**************.ukRETURN REQUESTS /INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT (S) T OOMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER T O AVOID PROCESSING DELAYS). T he assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1.Purchase Order number under which the product was PURCHASED,2.Model and serial number of the product under warranty, and3.Repair instructions and/or specific problems relative to the product.FOR NON-WARRANTY REPAIRS,consult OMEGA for current repair charges.Have the following information available BEFORE contacting OMEGA:1. Purchase Order number to cover the COST of the repair,2.Model and serial number of the product, and3.Repair instructions and/or specific problems relative to the product.OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. T his affords our customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.© Copyright 2004 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.。
MAKING MODERN LIVING POSSIBLE特点y y介质：淡水和中性盐水（按客户要求的海水类型）yy y制冷剂:HCFC y和不可燃y HFC yy y无需电源——自力式yy y在冷凝压力上升时打开yy 1.4 – 300 立方米/小时的完整流量范围yy y低流量型的WVFX – 0,63 立方米/小时y（按客户要求）yy y对灰尘不敏感yy WVFX 10 – 40 直接驱动水阀yy WVS 32 – 100 强制伺服操作水阀y y y根据客户需求，阀门可配有毛细管技术手册水阀WVFX 和 WVS 型WVFX y和y WVS型水阀用于调节带有水冷冷凝器的制冷装置中的水流量。
这些水阀可调整冷凝压力，并且在制冷装置的整个工作过程中维持其恒定。
当制冷装置停止运行时，冷却水供水自动关闭。
除了标准型号以外，可提供用于海水冷却的冷凝器和压缩机使用的采用不锈钢阀体，可用于腐蚀性液体的WVFX 15、WVFX 20 和y WVFX 25型水阀。
参数表 水阀，WVFX 和 WVS 型技术参数1) k v值为水在通过阀的压差等于 1 bar时的流量，单位为[立方米/小时]，密度ρ = 1000 千克/立方米。
2)完全打开阀则需要比使用压力范围为 3.5-16 bar的WVFX阀压力高y33%y的压力，3) WVFX 15、WVFX 20 和y WVFX 25型水阀可提供不锈钢阀体。
WVFX 10 – 40 为直接驱动调节阀yWVS 32 – 100 为伺服操作调节阀介质温度范围yWVFX 10 – 25: -25 – 130 °C yWVFX y32 – 40: -25 – 90 °C yWVS：y y-25 – 90 °C y如果一个WVS型调节器需要 1 - 10 bar y的开启压力差时，y必须更换阀的伺服弹簧。
见“订货”部分。
开启压力差yWVFX 10 – 25:yy最大 10 bar y WVFX 32 – 40:yy最大 10 bar y WVS 32 – 40:yy最小 0.5 bar：y y最大 4 bar y WVS 50 – 100:yy最小 0.3 bar；y y最大 4 bar y低于最大负荷的 20% 时，WVSy实际上将作为一个开关调节器。
Revised 11/01/85AX437060129637en-000101Multi-Pressure Relief ValvesCG-(H)-06-*(V)-(P)*DG(L)-0*-(H)-*-20CG-(H)-10-*(V)-(P)*DG(L)-0*-(H)-*-20Parts Manualby Danfoss#3DG4S4-010N-*-51Pilot Valve(Refer to I-3471-S for parts information)DG4S4-010A-*-50Pilot Valve(Refer to I-3478-S for parts information)Model CodeFor satisfactory service life of these components in industrial applications,use full flow filtrationto provide fluid which meets ISO cleanliness code18/15or cleaner.Printed in U.S.A.Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electric components.We specialize in providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market as well as the marine sector.Building on our extensive applications expertise,we work closely with you to ensure exceptional performance for a broad range of applications.We help you and other customers around the world speed up system development,reduce costs and bring vehicles and vessels to market faster.Danfoss Power Solutions –your strongest partner in mobile hydraulics and mobile electrification.Go to for further product information.We offer you expert worldwide support for ensuring the best possible solutions foroutstanding performance.And with an extensive network of Global Service Partners,we also provide you with comprehensive global service for all of our components.Local address:DanfossPower Solutions GmbH &Co.OHG Krokamp 35D-24539Neumünster,Germany Phone:+4943218710DanfossPower Solutions ApS Nordborgvej 81DK-6430Nordborg,Denmark Phone:+4574882222DanfossPower Solutions (US)Company 2800East 13th Street Ames,IA 50010,USA Phone:+15152396000DanfossPower Solutions Trading (Shanghai)Co.,Ltd.Building #22,No.1000Jin Hai Rd Jin Qiao,Pudong New District Shanghai,China 201206Phone:+862120806201Danfoss can accept no responsibility for possible errors in catalogues,brochures and other printed material.Danfoss reserves the right to alter its products without notice.This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.All trademarks in this material are property of the respective companies.Danfoss and the Danfoss logotype are trademarks of Danfoss A/S.All rights reserved.Products we offer:•Cartridge valves •DCV directional control valves•Electric converters •Electric machines •Electric motors •Gear motors •Gear pumps •Hydraulic integrated circuits (HICs)•Hydrostatic motors •Hydrostatic pumps •Orbital motors •PLUS+1®controllers •PLUS+1®displays •PLUS+1®joysticks and pedals•PLUS+1®operator interfaces•PLUS+1®sensors •PLUS+1®software •PLUS+1®software services,support and training •Position controls and sensors•PVG proportional valves •Steering components and systems •TelematicsHydro-Gear Daikin-Sauer-Danfoss。
Revision history Table of revisionsTechnical InformationPVG 32 Proportional Valve Group2 | © Danfoss | August 2017520L0344 | BC00000038en-US0802General descriptionFeatures of PVG 32...........................................................................................................................................................................5PVG modules .....................................................................................................................................................................................5PVP, pump side modules..........................................................................................................................................................5PVB, basic modules.....................................................................................................................................................................5Actuation modules.....................................................................................................................................................................6Remote control units ......................................................................................................................................................................6PVG 32 with open center PVP......................................................................................................................................................7PVG 32 with closed center PVP....................................................................................................................................................8PVG 32 sectional view.....................................................................................................................................................................9Load sensing for variable displacement pump supply.......................................................................................................9Safety in applicationControl system example..............................................................................................................................................................12Examples of wiring block diagram.....................................................................................................................................14FunctionLoad sensing controls...................................................................................................................................................................16LS control with bleed orifice (do not use with PVG valves).......................................................................................16Integral PC function.................................................................................................................................................................16Load sensing system characteristics:.................................................................................................................................16Remote pressure compensated controls..............................................................................................................................16Remote pressure compensated system characteristics:............................................................................................17Typical applications for remote pressure compensated systems:..........................................................................17PVG 32 main spool with pressure compensated control................................................................................................17Pressure compensated system characteristics..............................................................................................................18Typical applications for pressure compensated systems...........................................................................................18PVPC adapter for external pilot oil supply............................................................................................................................18PVPC with check valve for open center PVP...................................................................................................................18PVPC without check valve for open or closed center PVP.........................................................................................19PVMR, friction detent....................................................................................................................................................................21PVMF, mechanical float position lock.....................................................................................................................................21PVBS, main spools for flow control (standard)....................................................................................................................21PVBS, main spools for flow control (linear characteristic)...............................................................................................21PVBS, main spools for pressure control.................................................................................................................................22Background.................................................................................................................................................................................22Principle.......................................................................................................................................................................................22Application..................................................................................................................................................................................23Sizing.............................................................................................................................................................................................23Limitation....................................................................................................................................................................................24PVPX, electrical LS unloading valve.........................................................................................................................................24PVG 32 technical dataPVH, hydraulic actuation.............................................................................................................................................................26PVM, mechanical actuation........................................................................................................................................................26PVE, electrical actuation..............................................................................................................................................................26PVPX, electrical LS unloading valve.........................................................................................................................................29Electrical actuationElectrical control of PVG..............................................................................................................................................................30Closed loop control.......................................................................................................................................................................31PVEO...................................................................................................................................................................................................32PVEM...................................................................................................................................................................................................32PVEA, PVEH, PVES, PVEU..............................................................................................................................................................33PVEP....................................................................................................................................................................................................33PVED-CC and PVED-CX.................................................................................................................................................................33PVHC...................................................................................................................................................................................................34Technical characteristicsGeneral...............................................................................................................................................................................................36PVP, pump side module.. (36)Technical InformationPVG 32 Proportional Valve GroupContents© Danfoss | August 2017520L0344 | BC00000038en-US0802 | 3PVB, basic modules oil flow characteristics..........................................................................................................................36Pressure-compensated PVB, open center PVP ..............................................................................................................37PVB without pressure compensation, open center PVP.............................................................................................38PVB without pressure compensation, closed center PVP..........................................................................................39PVLP, shock and PVLA, suction valves...............................................................................................................................41Pressure build-up for pressure controlled spools.........................................................................................................41Pressure control spool flow characteristics..........................................................................................................................41Examples of how to use the characteristics for pressure control spools...................................................................42Characteristics for float position main spools (43)Hydraulic systemsManually actuated PVG 32 – fixed displ. pump..................................................................................................................45Electrically actuated PVG 32 – variable displ. pump.........................................................................................................46Other operating conditionsOil.........................................................................................................................................................................................................47Particle content, degree of contamination...........................................................................................................................47Filtration............................................................................................................................................................................................47DimensionsPVM, control lever positions......................................................................................................................................................50Surface treatment.. (51)Modules symbols, description and code numbersPVP, pump side modules.............................................................................................................................................................52PVB, basic modules........................................................................................................................................................................54PVLA, suction valve (fitted in PVB)...........................................................................................................................................56PVLP, shock and suction valve (fitted in PVB)......................................................................................................................56PVM, mechanical actuation........................................................................................................................................................57PVH, hydraulic actuation.............................................................................................................................................................58PVS, end plate..................................................................................................................................................................................58PVAS, assembly kit.........................................................................................................................................................................58PVPX, electrical LS unloaded valve..........................................................................................................................................58PVPC, plug for external pilot oil supply..................................................................................................................................59Module selection chartStandard FC spools........................................................................................................................................................................60Standard FC spools, hydraulic actuation...............................................................................................................................61FC spools for mechanical float position, PVMF...................................................................................................................61FC spools for friction detent, PVMR.........................................................................................................................................62FC spools with linear flow characteristic ..............................................................................................................................62Standard PC spools .......................................................................................................................................................................63Standard PC spools, hydraulic actuation...............................................................................................................................64PVB, basic valves.............................................................................................................................................................................65PVP, pump side module..............................................................................................................................................................66PVE, electrical actuation..............................................................................................................................................................68Order specificationStandard and option assembly.................................................................................................................................................70Reordering........................................................................................................................................................................................70Pressure setting limits..................................................................................................................................................................70PVG 32 specification sheet (72)Technical InformationPVG 32 Proportional Valve GroupContents4 | © Danfoss | August 2017520L0344 | BC00000038en-US0802PVG 32 is a hydraulic load sensing valve designed to give maximum flexibility. From a simple load sensing directional valve, to an advanced electrically controlled load-independent proportional valve.The PVG 32 modular system makes it possible to build up a valve group to meet requirements precisely.The compact external dimensions of the valve remain unchanged whatever combination is specified.Features of PVG 32•Load-independent flow control:‒Oil flow to an individual function is independent of the load pressure of this function‒Oil flow to one function is independent of the load pressure of other functions •Good regulation characteristics •Energy-saving•Up to 12 basic modules per valve group •Several types of connection threads •Low weight•Compact design and installationPVG modulesPVP, pump side modules•Built-in pressure relief valve •Pressure gauge connection•Versions:‒Open center version for systems with fixed displacement pumps‒Closed center version for systems with variable displacement pumps ‒Pilot oil supply for electrical actuator built into the pump side module ‒Pilot oil supply for hydraulic actuation built into the pump side module ‒Versions prepared for electrical LS unloading valve PVPXPVB, basic modules•Interchangeable spools•Depending on requirements the basic module can be supplied with:‒Integrated pressure compensator in channel P‒Load holding check valve in channel P ‒Shock/suction valves for A and B portsTechnical InformationPVG 32 Proportional Valve GroupGeneral description© Danfoss | August 2017520L0344 | BC00000038en-US0802 | 5‒LS pressure limiting valves individually adjustable for ports A and B ‒Different interchangeable spool variants‒All versions suitable for mechanical, hydraulic and electrical actuationActuation modulesThe basic module is always fitted with mechanical actuator PVM and PVMD, which can be combined with the following as required:•Electrical actuator (11 - 32 V ===):‒PVES – proportional, Super‒PVEH – proportional, High performance ‒PVEH-F – proportional high performance, Float ‒PVEA – proportional low hysteresis ‒PVEM – proportional, Medium performance ‒PVEO – ON/OFF‒PVEH-U/PVES-U – proportional, voltage control, 0-10 V ‒PVED-CC – Digital CAN controlled J1939/ISOBUS ‒PVED-CX – Digital CAN controlled CANopen X-tra safety ‒PVEP – PWM voltage controlled (11-32 V)‒PVHC – High Current actuator for PVG•PVMR, cover for Mechanical detent •PVMF, cover for Mechanical Float •PVH, cover for Hydraulic actuationRemote control units•Electrical remote control units:‒PVRE, PVRET ‒PVREL ‒PVRES ‒Prof 1‒Prof 1 CIP ‒JS120‒JS1000 Ball grip ‒JS1000 PRO grip ‒JS2000‒JS6000‒JS7000•Hydraulic remote control unit: PVRHHTechnical InformationPVG 32 Proportional Valve GroupGeneral description6 | © Danfoss | August 2017520L0344 | BC00000038en-US0802Electrical and hydraulic remote control unitsPVRE, electrical control unit, 162F…PVREL, electrical control unit, 155U…PVRH, hydraulic control unit, 155N…155N0003 155N0001155N0004 155N0005 155N0002PVG 32 with open center PVPPVG 32 with open center PVP (fixed displacement pump) and PVB with flow control spool.When the pump is started and the main spools in the individual basic modules (11) are in the neutral position, oil flows from the pump, through connection P, across the pressure adjustment spool (6) to tank.The oil flow led across the pressure adjustment spool determines the pump pressure (stand-by pressure).When one or more of the main spools are actuated, the highest load pressure is fed through the shuttle valve circuit (10) to the spring chamber behind the pressure adjustment spool (6), and completely or partially closes the connection to tank to maintain pump pressure.Pump pressure is applied to the right-hand side of the pressure adjustment spool (6).The pressure relief valve (1) will open should the load pressure exceed the set value, diverting pump flow back to tank.In a pressure-compensated basic module the compensator (14) maintains a constant pressure drop across the main spool – both when the load changes and when a module with a higher load pressure is actuated.With a non pressure-compensated basic module incorporating a load drop check valve (18) in channel P,the check valve prevents return oil flow.The basic module can be supplied without the load drop check valve in channel P for functions with over-center valves.The shock valves PVLP (13) with fixed setting and the suction valves PVLA (17) on ports A and B are used for the protection of the individual working function against overload and/or cavitation.Technical InformationPVG 32 Proportional Valve GroupGeneral description© Danfoss | August 2017520L0344 | BC00000038en-US0802 | 7An adjustable LS pressure limiting valve (12) can be built into the A and B ports of pressure-compensated basic modules to limit the pressure from the individual working functions. Please see the sectional drawing PVG 32 sectional view on page 9 below for better understanding of this example.The LS pressure limiting valves save energy compared with the shock valves PVLP:•with PVLP all the oil flow to the working function will be led across the combined shock and suctionvalves to tank if the pressure exceeds the fixed setting.•with LS pressure limiting valves an oil flow of about 2 l/min [0.5 US gal/min] will be led across the LSpressure limiting valve to tank if the pressure exceeds the valve setting.PVG 32 with closed center PVPPVG 32 with closed center PVP (variable displacement pump) and PVB with flow control spool.In the closed center version of PVP an orifice (5) and a plug (7) have been fitted instead of the plug (4).This means that the pressure adjustment spool (6) will only open to tank when the pressure in channel P exceeds the set value of the pressure relief valve (1).In load sensing systems the load pressure is led to the pump control via the LS connection (8).In the neutral position the pump load sense control sets the displacement so that leakage in the system is compensated, to maintain the set stand-by pressure.When a main spool is actuated the pump load sense control will adjust the displacement so that the set differential pressure (margin) between P and LS is maintained.The pressure relief valve (1) in PVP should be set at a pressure of approx. 30 bar [435 psi] above maximum system pressure (set on the pump or external pressure relief valve).Technical InformationPVG 32 Proportional Valve GroupGeneral description8 | © Danfoss | August 2017520L0344 | BC00000038en-US0802PVG 32 sectional viewPVPPVBPVB1. Pressure relief valve11. Main spool2. Pressure reduction valve for pilot oil supply 12. LS pressure limiting valve3. Pressure gauge connection 13. Shock and suction valve, PVLP4. Plug, open center 14. Pressure compensator5. Orifice, closed center 15. LS connection, port A6. Pressure adjustment spool 16. LS connection, port B7. Plug, closed center 17. Suction valve, PVLA8. LS connection 18. Load drop check valve9. LS signal 19. Pilot oil supply for PVE10. Shuttle valve20. Maximum oil flow adjustment screws for A/B portsLoad sensing for variable displacement pump supplyThe pump receives fluid directly from the reservoir through the inlet line. A screen in the inlet lineprotects the pump from large contaminants.Technical InformationPVG 32 Proportional Valve GroupGeneral description© Danfoss | August 2017520L0344 | BC00000038en-US0802 | 9The pump outlet feeds directional control valves such as PVG-32, hydraulic integrated circuits (HIC), and other types of control valves.The PVG valve directs and controls pump flow to cylinders, motors and other work functions. A heat exchanger cools the fluid returning from the valve. A filter cleans the fluid before it returns to the reservoir.Flow in the circuit determines the speed of the actuators. The position of the PVG valve spool determines the flow demand. A hydraulic pressure signal (LS signal) communicates demand to the pump control.The pump control monitors the pressure differential between pump outlet and the LS signal, and regulates servo pressure to control the swashplate angle. Swashplate angle determines pump flow.Actuator load determines system pressure. The pump control monitors system pressure and will decrease the swashplate angle to reduce flow if system pressure reaches the pump control setting.A secondary system relief valve in the PVG valve acts as a back-up to control system pressure.Pictorial circuit diagramTechnical InformationPVG 32 Proportional Valve GroupGeneral description10 | © Danfoss | August 2017520L0344 | BC00000038en-US0802Safety in applicationAll types of control valves (incl. proportional valves) can fail, thus the necessary protection against theserious consequences of function failure should always be built into the system. For each application anassessment should be made for the consequences of pressure failure and uncontrolled or blockedmovements. To determine the degree of protection that is required to be built into the application,system tools such an FMEA (Failure Mode and Effect Analysis) and Hazard and Risk Analysis can be used.FMEA – IEC EN 61508FMEA (Failure Mode and Effect Analysis) is a tool used for analyzing potential risks. This analyticaltechnique is utilized to define, identify, and prioritize the elimination or reduction of known and/orpotential failures from a given system before it is released for production. Please refer to the standard IECFMEA 61508.Hazard and risk analysis ISO 12100-1/14121This analysis is a tool used in new applications as it will indicate whether there are special safetyconsiderations to be met according to the machine directives EN 13849. Dependent on the determinedlevels conformity this analysis will detirmine if any extra requirements for the product design,development process, production process or maintenance, example the complete product life cycle.W WarningAll brands and all types of directional control or proportional valves, which are used in many differentoperation conditions and applications, can fail and cause serious damage.Analyze all aspects of the application. The machine builder/system integrator alone is responsible formaking the final selection of the products and assuring that all performance, safety and warningrequirements of the application are met. The process of choosing the control system and safety levels isgoverned by the machine directives EN 13849 (Safety related requirements for control systems).Control system exampleExample of a control system for manlift using PVE Fault monitoring input signals and signals from external sensors to ensure the PLUS+1® maincontrollers correct function of the manlift.Safety in applicationElectrical block diagram for the above illustrationWWarningIt is the responsibility of the equipment manufacturer that the control system incorporated in the machine is declared as being in conformity with the relevant machine directives.PVG 32 – mainly used in system with fixed displacement pumps:•PVSK, commonly used in crane application - full flow dump •PVPX, LS dump to tankPVG 100 – alternative LS dump or pilot supply disconnect:•PVPP, pilot oil supply shut off•External cartridge valve connecting LS pressure or main pressure to tank PVG 120 – pump disconnect / block for variable pumps:Safety in applicationSafety in application•PVPE, full flow dump for the PVG 120•External cartridge valve connecting LS pressure to tankExamples of wiring block diagramExample of a typical wiring block diagram using PVEH with neutral power off switch and fault monitoringoutput for hydraulic deactivation.A– Emergency stop / man present switchB– PVE Fault monitoring signalsC– Neutral signal detection.D– Hydraulic deactivationSystem Control Logic e.g. PLUS+1® for signal monitoring and triggering signal for deactivation of thehydraulic system.W WarningIt is the responsibility of the equipment manufacturer that the control system incorporated in themachine is declared as being in conformity with the relevant machine directives.。
