丹佛斯比例阀

丹佛斯比例阀接线方法嘿，朋友们！今天咱就来唠唠丹佛斯比例阀接线这档子事儿。

你说这丹佛斯比例阀啊，就像是机器世界里的小精灵，得给它接好线，它才能欢快地工作呢！那接线咋弄呢？听我慢慢道来。

首先呢，你得准备好工具，就像战士上战场得有趁手的兵器一样。

螺丝刀啊、剥线钳啊，这些可都不能少。

然后，找到比例阀上的接线端子，这就好比是找到小精灵的家。

看着那些小小的接线端子，可别小瞧它们，它们就像是电路世界的小入口，接对了路，一切都顺顺利利，接错了，那可就麻烦喽！就好像你本想去东边，结果走反了方向去了西边，能行不？把线的外皮剥开一点，露出里面的金属丝，这就像是给小精灵准备好礼物。

然后小心翼翼地把金属丝插进接线端子里，拧紧螺丝，就好像给小精灵关上家门，让它安心待在里面。

这时候你可能会问了，要是接错了咋办呀？嘿，那可就好比是走岔了路，得赶紧回头重新走啊！可不能马虎大意。

你想想看，要是接线没接好，这比例阀能好好工作吗？就像人要是腿不舒服，还能跑得快吗？所以啊，咱得认真对待，不能敷衍了事。

而且啊，在接线的过程中，还得注意安全。

电这玩意儿可不是好惹的，不小心碰到了，那可不得了。

就跟遇到一只小老虎似的，得小心应付。

接完线后，别着急，再检查检查，看看有没有松动的地方，有没有接错的地方。

就像出门前得照照镜子，看看自己穿戴整齐了没有。

总之呢，丹佛斯比例阀接线这事儿，说简单也简单，说难也难。

关键就看你用不用心，仔不仔细。

要是你认真对待，那它就能乖乖为你服务；要是你马马虎虎，那它可就没准给你闹出啥乱子来。

所以啊，朋友们，可别小瞧了这小小的接线工作，它可是关系到整个系统能不能正常运行的关键呢！大家都记住了吗？。

比例阀的工作原理
比例阀是一种常用的控制阀，其工作原理是通过调节流体通过阀门的截面积来实现流量的控制。

具体工作原理如下：
1. 内部结构：比例阀由阀体、阀芯和驱动器组成。

阀体内部包含进口和出口通道，以及与通道连接的阀座。

阀芯则位于阀体内部，可以在阀座上移动。

2. 运动控制：比例阀的阀芯受到外部驱动器的控制，驱动器可以通过电流或压力信号来控制阀芯的位置。

当驱动器接收到输入信号时，会相应地调整阀芯的位置。

3. 流体控制：通过调节阀芯的位置，比例阀可以控制流体通过阀门的截面积。

当阀芯离开阀座时，流体可以通过阀门的截面积增大，从而增加流量；反之，阀芯靠近阀座时，截面积减小，流量减小。

4. 反馈控制：为了确保阀门的稳定运行，比例阀通常配备反馈控制功能。

这意味着阀芯的位置可以被检测并反馈给驱动器，使其能够实时调整阀芯的位置，并保持所需的流量控制。

通过以上工作原理，比例阀可以精确地控制流体流量，广泛应用于工业自动化系统中，如液压系统、气动系统、流体控制系统等。

丹弗斯PVG32系列比例多路阀样本丹弗斯（Danfoss）PVG32系列比例多路阀是一种高性能的液压控制阀，广泛应用于工程机械、农业机械、航空机械等领域。

PVG32系列比例多路阀是基于丹弗斯先进的闭环控制技术，采用比例电磁阀和先进的电子控制器，具有精确的控制能力和高可靠性。

本文将详细介绍PVG32系列比例多路阀的特点、应用领域和技术指标。

PVG32系列比例多路阀的特点：1.高精度控制：PVG32系列比例多路阀采用先进的比例电磁阀和电子控制器，可以实现精确而稳定的液压控制，满足工程机械和其他应用中对精度要求高的场景。

2.良好的可调性：PVG32系列比例多路阀具有广泛的调节范围，可以实现多种不同的流量和压力控制需求。

通过电子控制器的参数调整，可以轻松实现控制参数的改变。

3.高性能比例电磁阀：PVG32系列比例多路阀采用了先进的比例电磁阀技术，具有快速的响应速度和稳定的控制特性，能够快速实现液压控制信号的转换。

4.多种控制方式：PVG32系列比例多路阀支持多种不同的控制模式，包括手动操作、电流控制和压力控制等，满足不同工作场景的需求。

5.高可靠性：PVG32系列比例多路阀采用先进的电子控制技术和优质的材料制造，具有较高的可靠性和耐用性，适用于各种恶劣的工作环境。

PVG32系列比例多路阀的应用领域：1.工程机械：PVG32系列比例多路阀广泛应用于各种工程机械设备，如挖掘机、装载机、推土机等。

可以实现对液压系统的精确控制，提高机械设备的操作性能和效率。

2.农业机械：PVG32系列比例多路阀也适用于农业机械领域，如拖拉机、农用挖掘机等。

可以实现对农业机械设备的液压系统进行精确控制，提高农机设备的工作效率和稳定性。

3.航空机械：PVG32系列比例多路阀还可以用于航空机械领域，如飞机起落架、缝翼系统等。

可以实现对航空机械设备的液压系统进行精确控制，提高航空机械设备的安全性和可靠性。

PVG32系列比例多路阀的技术指标：1. 工作压力：最高工作压力为350 bar。

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.。