PVG 32 Proportional Valves Technical Information - · PDF file4 520L0344 t 3FW (& t %FD PVG 32 Proportional Valve Technical Information Valve system PVG 32 is a hydraulic load sensing

PVG 32Proportional Valves

Technical Information

2 520L0344

PVG 32 Proportional ValveTechnical InformationContents

General

Function

Technical Data

Electrical Actuation

Modules and Code Numbers

General...................................................................................................................................................................................4

Function.................................................................................................................................................................................7PVG 32 valve group ...............................................................................................................................................................................7PVPC, plug for external pilot oil supply..........................................................................................................................................9

, friction detent.........................................................................................................................................................................PVMF, mechanical float position lock .........................................................................................................................................PVBS, main spools for flow or pressure control ....................................................................................................................... 2PVPX, electrical LS unloading valve.............................................................................................................................................. 3

Technical data.................................................................................................................................................................... 4PVG 32, valve group.................................................................................................................................................... 4PVH, hydraulic actuation........................................................................................................................................... 4PVM, mechanical actuation...................................................................................................................................... 5

, electrical actuation ........................................................................................................................................... 6, electrical actuation ........................................................................................................................................... 7

..................................................................................................................................................PVPX, electrical LS unloading valve ...................................................................................................................... 9

..........................................................................................................................................................Function ..........................................................................................................................................................................

Modules and code numbers ........................................................................................................................................26PVP, pump side modules ................................................................................................................................................................. 26PVPV/PVPVM pump side modules................................................................................................................................................PVB, basic modules – without adjustable LSA/B pressure limiting valves ....................................................................... 29PVB, basic modules – with adjustable LSA/B pressure limiting valves..............................................................................PVM, mechanical actuation.............................................................................................................................................................

cover for mechanical actuation ........................................................................................................................................PVH, cover for hydraulic actuation................................................................................................................................................

r friction detent ......................................................................................................................................................PVMF,cover for mechanical float position..................................................................................................................................

, electrical actuation ................................................................................................................................................................... 32PVLA, suction valve............................................................................................................................................................................. 33PVLP, shock and suction valve ........................................................................................................................................................ 33PVS, end plate....................................................................................................................................................................................... 34PVAS, assembly kit .............................................................................................................................................................................. 34PVPX, electrical LS unloading valve.............................................................................................................................................. 35PVPC, plug for external pilot oil supply....................................................................................................................................... 35

alter its products without prior notice. This also applies to products already ordered provided that such alterations can be made without affecting

Table of RevisionsDate Page Changed Rev

Various Handle on drawings GA67 GB5, 26 GC69 Code numbers changed

New back cover

Revision History

3

Rated Pressure Product Rated pressurePVG 32 w. PVSPVG 32 w. PVSIPVG 32 w. PVBZPVG 32 w. HIC steelPVG 32 w. HIC aluminium

520L0344

PVG 32 Proportional ValveTechnical InformationContents

Contents(Continued)

Technicalcharacteristics

Dimensions

Lever Positions

Hydraulic Systems

Electrical Systems

System Safety

Other Operating Conditions

Module Selection Chart

Order Specification

Specification Sheet

Specification Sheet, SAE Version

Technical characteristics ............................................................................................................................................... 36PVP, pump side module .................................................................................................................................................................... 36PVB, basic module............................................................................................................................................................................... 37PVLP, shock and suction valve ........................................................................................................................................................ 44Pressure control spools ..................................................................................................................................................................... 46Characteristics for float position main spools........................................................................................................................... 47

........................................................................................................................................................................ 49

Lever positions ................................................................................................................................................................. 53

Hydraulic systems ........................................................................................................................................................... 54

............................................................................................................................................................ 55

System safety .................................................................................................................................................................... 57

Other operating conditions.................................................................................................................................................................. 62

Module selection chart .......................................................................................................................................................................... 64

Order specification................................................................................................................................................................................... 72

Specification sheet................................................................................................................................................................................... 76

Speci ......................................................................................................................................................... 77

4 520L0344

PVG 32 Proportional ValveTechnical Information

Valve systemPVG 32 is a hydraulic load sensing valve designed to give maximum flexibility. From a simple load sensing directional

proportional valve.

The PVG 32 module 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.

General features PVG 32

– 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 functionsGood regulation characteristics

Several types of connection threadsLow weight

PVP – pump side module

Pressure gauge connectionVersions:– Open centre version for systems with fixed displacement pumps– Closed centre version for systems with variable displacement pumps– Pilot oil supply for electrical actuator built into the pump side module– Versions prepared for electrical LS unloading valve PVPX

PVB, basic moduleInterchangeable spools

– Integrated pressure compensator in channel P– Check valve in channel P– Shock/suction valves– LS pressure limiting valves individually adjustable for ports A and B

Actuation modulesThe basic module is always fitted with mechanical actuator PVM, which can be combined with the following as required: __)

PVMF, cover for mechanical floatPVH, cover for hydraulic actuation

General

General

5520L0344

PVG 32 Proportional ValveTechnical InformationGeneral

Remote control units

Hydraulic remote control unit

Electronics

PVG CIPCIP Configuration Tool

Accessories

7520L0344


PVG 32 Valve Group with Open Centre PVP(PVB with Flow Control Spool)

PVG 32 Valve Group with Closed Centre PVP(PVB with Flow Control Spool)

Function

the neutral position, oil flows from the pump, through connection P, across the pressure

diverting pump flow back to tank.

pressure drop across the main spool – both when the load changes and when a module with a higher load pressure is actuated.

The basic module can be supplied without the load drop check valve in channel P for

A and B are used for the protection of the individual working function against overload and/or cavitation.

functions.

The LS pressure limiting valves save energy compared with the shock valves PVLP:

shock and suction valves to tank if the pressure exceeds the fixed setting.

across the LS pressure limiting valve to tank if the pressure exceeds the valve setting.

In load sensing systems the load pressure is led to the pump regulator via the LS

In the neutral position the pump control sets the displacement so that leakage in the

the set differential pressure between P and LS is maintained.

8 520L0344

PVG 32 Proportional ValveTechnical InformationFunction

PVG 32 Sectional Drawing

2. Pressure reduction valve for pilot oil supply3. Pressure gauge connection4. Plug, open centre5. Orifice, closed centre6. Pressure adjustment spool7. Plug, closed centre

9. LS signal

ports A and B

PVP

PVB

PVB

1 2

3

4+5

67

9

8

T P

M

ALS

B A12 13

11

10

14 16 17 15

T T

LS B LS AB A

P

T TB

19

P

18 20

V310106.A

9520L0344


PVPC,Plug for External Pilot Oil Supply

PVPC with check valve for open centre PVPPVPC with check valve is used in systems where it is necessary to operate the PVG 32 valve by means of the electrical remote control without pump flow.

opened, oil from the pressure side of the cylinder is fed via the PVPC through the pressure reducing valve to act as the pilot supply for the electrical actuators.

This means that a load can be lowered by means of the remote control lever without

valve is closed to ensure that the load is not lowered due to the pilot supply oil flow

gauge connection without the use of a PVPC plug.

10 520L0344


PVPC,Plug for External Pilot Oil Supply

PVPC without check valve for open or closed centre PVPPVPC without check valve is used in systems where it is necessary to supply the PVG 32 valve with oil from a manually operated emergency pump without directing oil flow to the pilot oil supply

mally, the oil is directed through the PVPC plug via the pressure reduction valve to the electrical actuators.

the manually operated emergency pump is used to pilot open the over centre valve and lower the load. The load can only be lowered using the mechanical operating lever of the PVG 32 valve.

11520L0344


PVMR, Friction Detent

directional spool to be held in any position, resulting in infinitely variable, reversible, pressure compensated flow. This can be sustained indefinitely

mechanical lever.

Please note:

with PVB basic modules with pressure compensator.

PVMF, Mechanical Float Position Lock This allows the float spool to be held in the float position after release of the mechanical handle.

PVMFP A F

PVMFP B F

Function

PVMR,Friction Detent

PVMF,Mechanical Float Position Lock

12 520L0344


PVBS,Main Spools for Flow Control (Standard)

PVBS,Main Spools for Flow Control (with Linear Characteristic)

PVBS,Main Spools for Pressure Control

highest load pressure. This is done either via the pressure adjustment spool in open

pumps).

In this way the pump pressure will always correspond to the load pressure plus the

This will normally give optimum and stable adjustment of the oil flow.

PVBS main spools with linear characteristic have less dead band than standard spools and a completely proportional ratio between control signal and oil flow in the range beyond the dead band. PVBS with linear characteristic must never be used together

pressure in neutral position.

In a few systems load sensing pump

ment of the oil flow and a tendency towards system hunting. This may be the case with working functions that have a

valves. In such systems main spools for pressure control can be advantageous.

The spools are designed in such a way that the pump pressure is controlled by the spool travel. The main spool must be displaced until the pump pressure just exceeds the load pressure before the working function is applied. If the main spool is held in this position, the pump pressure will remain constant – even if the load pressure changes – giving a stable system.

The use of pressure control spools, however, also means thatthe oil flow is load dependentthe dead band is load dependentthe pump pressure can exceed the load pressure by more than is usual.

it is known for certain that problems with stability will arise – or already have arisen.

13520L0344


PVPX is a solenoid LS unloading valve. PVPX is fitted into the pump side module enabling a connection to be made between the LS and the tank lines. Thus the LS signal can be relieved to tank by means of an electric signal.

For a PVP pump side module in open centre version the relief to tank of the LS signal means that the pressure in the system is reduced to the sum of the tank port pressure plus the neutral flow pressure for the pump side module.

For a PVP pump side module in closed centre version the relief to tank of the LS signalmeans that the pressure is reduced to the sum of the tank port pressure for the pump

Function

PVPX,Electrical LS Unloading Valve

14 520L0344


PVG 32 Valve Group

PVH, Hydraulic Actuation

The technical data for PVG 32 and PVPX are typical measured results. For the hydraulic 2

Max. pressure

Port P continuousPort P intermittent 5)

Port A/B continousPort A/B intermittent5)

Port T, static/dynamicOil flow rated Port P 3) 4) 3) 4)

Port A/B, with press.comp. 2) 2)

Port A/B witout press.comp.Spool travel, standard ± 7 mmSpool travel,float position, spool

Proportional rangeFloat position

flow control spoolsStandardLinear characteristic

Max. internal leakage A/B T without shock valve 3/min 3

A/B T with shock valve 25 cm3/min 3

Oil temperatureMin. temperatureMax. temperature

Ambient temperature

Oil viscosityOperating range 2/sMin. viscosity 4 mm2/sMax. viscosity 2/s

Filtration Max. contamination

Oil consumtion in pilot oil pressure reduction valve

4) For system with Mid inlet PVPVM,

Max. pilot pressureMax. pressure on port T

15520L0344


PVM,Mechanical Actuation

Float position

Operating force

Neutral position Max. spool travel

Operating force

Spool displacement from neutral positionSpool displacement from any other positionSpool displacement from neutral positionSpool displacement into float positionSpool displacement away from float position

Control lever positions, No 2 6

16 520L0344


PVETechnical Data

The following technical data are from typical test results. For the hydraulic system a

PVEO and PVEM

PVEO and PVEM

rated

range

max. ripple

Current consumption at rated voltage

neutral

Power consumption

Reaction time PVEO and PVEM

Supply voltage FunctionPVEO

ON/OFFs

PVEO-RON/OFF

s

PVEM Prop. medium

s

meansof neutral switch

position to max. spool travel

max.

rated

min.


travel to neutral position

max.

rated

min.

Constant voltageposition to max. spool position

max.

rated

min.

Constant voltagetravel to neutral position

max.

rated

min.

Hysteresis rated

17520L0344


PVETechnical Data (Continued)

Spoo

l pos

ition

PVEA, PVEH and PVES

PVEA, PVEH and PVES

rated

range

max. ripple

Current consumption

Signal voltageneutral

Signal current at rated voltage

Input capacitor F

Power consumption

Max. load

Active

Passive

Reaction time

Supply voltage FunctionPVEA

Prop. fines

PVEHProp. high

s

PVESProp. super

s


position to max. spool travel

max.ratedmin.


travel to neutral position

max.ratedmin.

Constant voltageposition to max. spool travel

max.ratedmin.

Constant voltagetravel to neutral position

max.ratedmin.

Hysteresis rated

18 520L0344


Technical Data(Continued)

Oil viscosity

Oilviscosity

range 2

min. 4 mm2

max. 2

2/s

Filtering

Filtering in the hydraulic system

Max. allowed degree of

Oil temperature

Oilmin.max.

Ambient temperature

Ambiant temperature

Oil consumption PVEO and PVEM

Supplyvoltage Function PVEO

ON/OFFPVEM

Prop. medium

voltagePilot oil

neutral

voltage

Pilot oil flow per

locked

one actuationmax.)

continuous actuations max.)

Oil consumption PVEA, PVEH and PVES

Supplyvoltage

FunctionPVEA

Prop. finePVEH

Prop. highPVES

Prop. super

voltagePilot oil

neutral

voltagePilot oil flow

locked

one actuationmax.)

continuous actuations

19520L0344


PVPX,Electrical LS Unloading Valve

Max. operating pressure

IP652 bar

temperature)Min. temperature

Max. temperature

Max. coil surface temperature

Ambient temperature

Oil viscosity

Operating range2/s

Min. viscosity4 mm2/s

Max. viscosity2/s

24 VMax. premissible deviation from rated supply voltage

Current consuption at rated voltage

Power consumption

20 520L0344


pP T

P

T

Functionof electronics, sensors and actuators into a single unit that interfaces directly to the proportional valve body.

Closed loop controlAll the proportional actuators feature an integrated feedback transducer that measures spool movement in relation to the input signal, and by means of a solenoid valve bridge, controls the direction, velocity and position of the main spool of the valve. The integrated electronics compensate for flow forces on the spool, internal leakage, changes in oil viscosity, pilot pressure, etc. This results in lower hysteresis and better resolution. Furthermore the electronics enable built in safety like fault monitoring,

Principle

solenoid valves are actuated so that hydraulic pilot pressure drives the main spool into the correct position.

Inductive transducer, LVDT

position signal of high resolution.

Integrated pulse width modulation

modulation principle. As soon as the main spool reaches the required position, modulation stops and the spool is locked in position.

21520L0344


spool is moved from neutral to maximum stroke when power is connected.

PVEO, ON/OFF

Compact

Low electrical power

PVEO-R, ON/OFF with hydraulic ramp

reaction time is needed.

main spool position is adjusted so that it corresponds to an electrical signal – e.g. from a remote control unit.

PVEM, proportional medium

tion proportional control and where reaction and hysteresis are not critical.

Inductive transducerMedium hysteresis

Low electrical power

PVEA, proportional fine

among the requirements are fault monitoring, low hysteresis, high resolution but where the reaction time is not critical.

Inductive transducerIntegrated pulse width modulation AMP connector only

Fault monitoring with transistor outputfor signal source.Low electrical power

42P

p1 3 P

T T

B A

V310113.A

T T

P

1 3

42

V310112.A

C

B A

pP

ON/Off Actuation

Proportional Actuation

Pp

P

T T31

V310114.A

AB

C

22 520L0344


PVEH, proportional high

Inductive transducerIntegrated pulse width modulationLow hysteresisFast reaction timeHirschmann or AMP connector

Fault monitoring with transistor output for signal sourceLow electrical power

PVES, proportional super

control systems requiring very low hysteresis to obtain a high resolution.

Hirschmann or AMP connector

Proportional Actuation(Continued)

T T

P

1 3

42

V310112.A

C

B A

pP

23520L0344


available in two versions:

solenoid valves and drives the spool in neutral.

Both active and passive fault monitoring systems are triggered by three main events:

1. Input signal monitoringThe input signal voltage is continuously monitored. The permissible range is between

active error state.

2. Transducer supervision

switch into an active error state.

3. Supervision of the closed loop

On the other hand, a situation where the actual position is closer to neutral than that demanded will not cause an error state. This situation is considered “in control”.

Active fault monitoring

The solenoid valve bridge will be disabled and all solenoid valves will be released. An alarm signal is sent out through the appropriate pin connection.

the supply voltage).

Passive fault monitoring

The solenoid valve bridge will not be disabled but still control the main spool position.

An alarm signal is sent out through the appropriate pin connection.

will turn to passive again. However, the signal will always be active for a minimum of

To prevent the electronics from going into an undefined state, a general supervision of the power supply and the internal clock frequency is made. This function applies to

1. High supply voltageThe solenoid valves are disabled when the supply voltage exceeds 36 V, and the main spool will return/stay in neutral.

2. Low supply voltage:

main spool will return/stay in neutral.

The Fault Monitoring System

Fault Monitoring System

24 520L0344


The Fault Monitoring System (Continued)

Fault MonitoringSpecification

3. Internal clockThe solenoid valves are disabled when the internal clock frequency fails, and the main spool will return/stay in neutral.

WWARNING

It’s up to the customer to decide on the required degree of safety for the system

Note:pages 56 to 59.

neutral position switch

see page 56).

TypeFault

monito-ring

Delay before error

outError mode

Error outputstatus

Fault output

on PVE 1) LED light

Memory (reset

needed)No fault

monitoring

Active

No fault Low < 2 V GreenInput signal faults

HighFlashing red

YesConstant red

Close loop fault

Passive

No fault Low < 2 V GreenInput signal faults

HighFlashing red

NoConstant red

Close loop fault

Measured between fault output pin and ground

25520L0344


Normal

Green

Fault

Via an external relay the pin pos. 3 can be connected to a solenoid valve which will

Other connections possible:a solenoid valve to relieve the pump oil flowa signal lamp, an alarm horn

PVEA/PVEH/PVES, Connection to Fault Monitoring Output

26 520L0344


PVP, Pump Side Moduls

Symbol Description Code number

Open centre pump side module forpumps with fixed displacement.

For purely machanically actuatetvalve groups

P = G ½T = G ¾P = 7/

/P

= G ¾TP

/T

Closed centre pump side module for pumps with vaiable displacement.

P = G ½T = G ¾

= 7//

For purely machanically actuatetvalve groups

P= G ¾T

P/T

Open centre pump side module for pumps with fixed displacement.

actuatet valves

P = G ½T = G ¾P = 7/

/P

= G ¾TP

/T

Closed centre pump side modulepumps with variable displacement.

for electrically actuatet valves

P = G ½T = G ¾

P = 7//

P= G ¾T

P/T


actuatet valves

Connection for electricalLS unloading valve, PVPX

P = G ½T = G ¾P = 7/

/P

= G ¾TP

/T

Closed centre pump side modulepumps with variable displacement

Connection for electricalLS unloading valve, PVPX

P = G ½T = G ¾P = 7/

/P

= G ¾TP

/T

P = 7/ / /


27520L0344

PVG 32 Proportional ValveTechnical InformationModules and Code Numbers

PVP, Pump side Moduls



For mechanical actuated valves.

Connection for LS unloadingvalve, PVPX

P = G ¾T = G ¾

Closed centre pump side module for pumps with vaiable displacement.For mechanical actuated valves.Connection for LS unloadingvalve, PVPX

P = G ¾T = G ¾

Open centre pump side module for pumps with fixed displacement.

actuation and connection for pilot oil pressure

P = G ¾T = G ¾

Closed centre pump side modulepumps with variable displacement.


P = G ¾T = G ¾



P = G ¾T = G ¾

Closed centre pump side modulepumps with variable displacement


P = G ¾T = G ¾

Connection: P = G /23/4 /4

3/4 p.P = 7/ / /2 /

28 520L0344


PVPV and PVPVM, Pump Side Modules

Symbol DescriptionCode

number

PVPVClosed center pump side module forpumps with variable displacement.

5/

PVPVClosed center pump side module for pumps with vaiable displacement.

PVLP 63

5/

PVPVMClosed center pump side module forpumps with variable displacement.

5/

PVPVMClosed center pump side module forpumps with variable displacement.

PVLP 63

5/

9/


29520L0344


PVB, Basic Modules – Without Adjustable LSA/B Pressure Limiting Valves

Symbol DescriptionCode number

No facilities for shock valves A/B

Facilities for shock valves A/B

check valve and pressure compensator Can be used where load holding valves prevent oil from flowing back through channel P.

Load dropcheck valve

Load drop check valve.LSA/B shuttle valve. To be used with float position spools.

compensator valve

30 520L0344


PVB, Basic Modules - Without Adjustable LSa/b Pressure Limiting Valves


No facilities forshock valves A/B


compensator valve

PVB, Basic Modules - With Adjustable LSa/b Pressure Limiting Valves

Symbol DescriptionCode number

No facilities for shock valves A/B


compensator valve. Adjustable LSA/B pressure limiting valves

connection port A/B. Also used for float position spools.

compensator valve. Adjustable LSA/B pressure limiting valves

connection port A/B


31520L0344


PVM, Mechanical Actuation

Symbol Description Code numberwith stop screws w/o stop screws

PVM, Standard, spring centered Individual oil flow adjustment to ports A and B

Shaft for mounting of actuation lever

PVM, as standard, witout actuation lever.

PVM, Standard, spring. Individual oil flow

PVMD, Cover for Mechanical Actuation


Cover for purely mechanically operated valve

PVH, Hydraulic Actuation


PVH, Cover for hydraulicremote control

PVMR, Friction Detent


Friction detent

PVMF, Mechanical Float Position


PVMFMechanical float position lock


32 520L0344


Code Numbers for Use on PVG 32157B....

PVE for PVG 32

PVEO, ON/OFF actuationCode no. 157B....

Hirschmann connector

AMPconnector

Deutschconnector

12 V 24 V 12 V 24 V 12 V 24 V

ON/OFF 4292

ON/OFF with ramp 4229

4266not

available4272

PVEM, proportional actuationCode no. 157B....

Hirschmann connector 12 V 24 V

Standard

PVEA/PVEH/PVES, proportional actuationCode no. 157B....

Hirschmann connector11 - 32 V

AMPconnector11 - 32 V

Deutschconnector11 - 32 V

Standard, active fault monitoring Not available 4734 4792

Standard, passive fault monitoring Not available 4735, 4775* Not available

Standard, active fault monitoring Not available 4736 4796

Standard, passive fault monitoring Not available 4737 Not available

Standard, active fault monitoring

Standard, passive fault monitoring

4332 Not available 4392

Not available Not available

Standard, active fault monitoring Not available

Standard, passive fault monitoring Not available Not available

Not available

33520L0344


PVLA, Suction Valve (fitted in PVB)


Suction valve forport A and/orB.

Plug for connecting the nonactive port to tank, when using a single acting spool.

PVLP, Shock and Suction Valve (Fitted in PVB)

Symbol Description Settingbar [psi] Code number

Shock and suction valvefor port A and/or B.

32725

63

2755

3335

3625265


34 520L0344


PVS, End Plate


PVS, without active elements.No connections

PVS, without active elements.Max. intermittend LX

PVSI, without active elements

PVSI, without active elementsLX connections.Max. intermittend LX

PVAS, Assembly Kit

Code no, 157B... 0 1 2 3 4 5 6 7 8 9 10 11 12

PVB’s

PVAS, Assembly Kit for PVPVM

DescriptionCode number 157B....

1 PVB 2 PVB 3 PVB 4 PVB 5 PVB 6 PVB 7 PVB 8 PVB 9 PVB 10 PVBTie bolts and seals


V310062.A

V310063.ALX

V310063.ALX

V310062.A

35520L0344


PVPX, Electrical LS Unloaded Valve

Symbol Description Code numberPVPX, Normally open:LS pressure relieved with no signal to PVPX 24 V

PVPX, Normally closed:LS pressure relieved with no signal to PVPX 24 V

PVPX, Normally open with manual override:LS pressure relieved with no signal to PVPX

24 V

26 V

Plug

PVPC, Plug for External Pilot Oil Supply


PVP,Plug without check valve for openor closed centre

PVP,Plug with check valve foropen centre


36 520L0344


General

PVP, Pump Side Module

Technical Characteristics

The characteristics in this catalogue are typical measured results.2

Pressure relief valve characteristic in PVPThe pressure relief valve is set at an oil

Setting range:

Neutral flow pressure in PVP, open centre

37520L0344


Oil flow characteristicsThe oil flow for the individual spool depends on

Please note:The letters AA, A, B, etc. denote spool types, see pages 62 to 69. The characteristic below is shown for spool travel in both directions. All other characteristics are shown for spool travel in one direction only.

Pressure-compensated PVB, open or closed centre PVPThe oil flow is dependent on the supplied pump oil flow. The characteristics are plotted for a pump oil flow, QP, corresponding to the rated max. spool oil flow, QN.

QN will give the same oil flow on the eighth as on the first basic module.

S = Signal voltage= Supply voltage

PVB, Basic Module


38 520L0344


Pressure compensated PVB, open or closed centre PVPLinear characteristic

Please note:For PVB basic modules without pressure compensator the top ends of the characteristics

spools, see characteristics for PVB without pressure compensator.

S = Signal voltage= Supply voltage

PVB, Basic Module


39520L0344


PVB without pressure compensation, open centre PVP

Oil flow as a function of spool travelThe spool flow is dependent on the supplied oil flow, QP. The characteristics apply to

several basic modules are activated at the same time, the characteristic depends on the load pressure of the actuated basic modules.

PVB, Basic Module


40 520L0344


PVB without pressure compensation, open centre PVP

Oil flow QA/B P) – curves for fully displaced flow control spools.

P A/B) is read on the curve for neutral flow pressure in PVP, page 36.

PVB, Basic Module


41520L0344


PVB without pressure compensation, closed centre PVPPVB, Basic Module


42 520L0344


PVB, Basic Module


PVB without pressure compensation, closed centre PVP

The oil flow is dependent on the pressure difference between the pump pressure and the LS signal. Normally the pressure difference is set at the LS pump regulator.

43520L0344


PVB, Basic Module


Pressure drop PVB at max. main spool travel

Pressure drop PVB for open spool in neutral position

Load-independent oil flow,pressure-compensated PVB

Oil flow at LS pressure limiting, pressure-, compensated PVB

44 520L0344


PVLP,Shock and Suction Valve

PVLA,Suction Valve


PVLP, shock valve

The shock valve PVLP is designed to absorb shock effects. Consequently, it should not be used as a pressure relief valve.

If the working function requires the use of a pressure relief valve, a PVB basic

A/B pressure limiting valve should be used.

PVLP/PVLA, suction valve

45520L0344


Pressure Control Spools, Characteristics in Extreme Positions


Size A:

Size B:1: See example page 46

Size C:

Size D:2: See example page 46

46 520L0344


Pressure Control Spools, Characteristics in Extreme Positions

Examples of HowTo Use the Characteristics for Pressure Control Spools


Size E:

Pressure build-upMax. oil flow can be reduced by about

pressure by limiting the main spool

Example of determining the oil flow

P:

A/B:

page 45

Example of determining spool size

A/B:P

LSA

page 45

Please note:Normally a smaller spool can be chosen with pressure control. It is our experience that

47520L0344


Characteristics; oil flow, spool travel and voltage

A/B T.

Pressure drop A/B T at max. spool travel within the proportional range (4.8 mm) [0.19 in]

Characteristics for Float Position Main Spools


48 520L0344


Characteristics for Float Position Main Spools


Pressure drop A/B T in float position

49520L0344


Dimensions

F : Shock and suction valve, PVLPG : Pressure gauge connection; G /4 /2

H : Plug for external pilot oil supply, PVPC; G /2 /2

J : LS connection; G /4 /2

5/L : Port A and B; G /2 7/M : LX connection: PVS; G / 3/ PVSI; G /4 /2

N : LS pressure limiting valveO : Tank connection; G 3/4 /P : Pressure relief valveQ : Pump connection; G /2 3/4 7/ /

A and LSB connections; G /4 /2

S

37[1.46]

V310140.A

48[1

.89]

PVS=

11.5

[0.4

53]

P

95[3.74]

L2

T

LS

P

112.

5[4.

430]

115.

5[4.

457]

22.5°

34.5[1.358]79.5[3.130]

95[3.74]58.5[2.303]14

1[5.

55]

70.5

[2.7

76]

38.5

[1.5

16]

22[0

.87]

1L

35[1.38]

21[1.118]36.5[1.437]36[1.42]

69.5[2.736]24[0

.94]

23[0

.91]

48[1

.89]

12[0

.47]16

.5[0

.650

]B4

A4

B3A3

B2A2

B1A1

C

B

A

C

B

A

85.5[3.366]

23[0

.91]

37[1

.46]

38.5

[1.5

16]

38.5[1.516]

23[0

.91]

PVSI

=12[

0.47

]R

F G H

KJI

M LN

O

Q

PVB 1 2 3 4 5 6 7 8 9 10 11 12mm 226 274 322 466 562

L2mm 336 434 527 576 622

50 520L0344


A1

B1

A2

B2

T

P

MAA

1B1

B1A

1

PVLP

13[0.51]

3

1

L

L

L 2

72[2

.83]

24[0.94]

24[0

.94]

86[3

.39]

V310124.A

PVPVM

G1

PVS

PVS

Pilot

LS

13[0.51]

72[2

.83]

Supply

X-X

X X

13[0.51]

26-30 Nm

[1 5/16 UNF]

Dimensions (Continued)

Stay Bolt Set, PVAS for PVPVMQty.,basic Module 1 2 3 4 5 6 7 8 9 10 11 12

L mm 262 454 646

L2 mm 262 646 694

L3 mm 227 275 323 467 563

51520L0344


Dimensions (Continued)

F : G /4 /2

F

max.290.50[11.437]

107[4.21]max.290.50[11.437]

129[

5.08

]95

[3.7

4]7[

0.28

]

M

85[3

.35]

17[0.67]

A-A

110[4.33] 60[2.36]

PV

D85[3

.35]

58.5

[2.3

03] 32

[1.2

6]6.

5[0.

256]

33[1.30]7[

0.28

]

max.200.5[7.894]

13[0

.51]

110[4.33]

B-B

60[2.36]

110[4.33]

C-C

60[2.36]

7[0.

28]

45[1

.77]

7[0.

28]

49.5[1.949]

PVMR/F

107[4.21]

117[

4.61

]

139[

5.47

2]

~ 16

5[6.

50]

44 [1

.732

]

89.5[3.524]

85.5[3.366]

PVEO

PVEM/PVEH/

PVH

V310141.A

PVES

53520L0344


Control Lever Positions

Lever Positions

Base with an angle of 22.5°Base with an angle of 37.5°

22.5˚ 52.5˚ 82.5˚ 112.5˚ 142.5˚ 172.5˚

19.5˚

19.5˚

V310014.A

37.5˚67.5˚

97.5˚ 127.5˚

157.5˚187.5˚

19.5˚

19.5˚

V310018.A

54 520L0344


Manually ActuatedPVG 32 – Fixed Displacement Pump

Hydraulic Systems

55520L0344


Electrically Actuated PVG 32 – Variable Displacement Pump (Electrical Actuator, Shock Valves, etc.)

Hydraulic Systems

56 520L0344


Electrical Connections, General

Electrical Connection Example

made using an ordinary terminal strip.

The wiring diagrams below and on page 56 to 59 show only the basic outlines for the electrical connection.

Voltage supply

rated voltage.

Signal leads must not act as supply leads at the same time

2

25 Pin SUB-D connector

Push

/Dir.

sw.4

B

Push

/Dir.

sw.4

A

Push

/Dir.

sw.3

B

Push

/Dir.

sw.3

A

PVEM

PVEH/A/S

DC

V310116.A

P4B

1

PVEO

3

2

1

3

1

2

3

1

2

2

3

S2UUS1 P3BP3A P4A

Prop

2

Func

tion

Prop

1

E

U- +

U+

+-

DC

Neu

t.sw

.U

++ U -U

U- (

GN

D)

19Pin

no.

78 6 3, 1

5, 1

61,

2, 1

4102120 22

F

NC

NC

F: Signal output, fault monitoringNC: Not connected

57520L0344


Building in Safety

WWarning

System Safety

Thus the necessary protection against the serious consequences of function failure should always be built in.

For each application an assessment should be made of the consequences of pressure failure and uncontrolled or blocked movements.

2. High safety demands3. Average safety demands4. Limited safety demands.

All makes and all types of directional control valves – inclusive proportional valves – can fail and cause serious damage. It is therefore important to analyse all aspects of the application. Because the proportional valves are used in many different operation conditions and applications, the manufacturer of the application is responsible for making the final

ments of the application are met. The process of choosing the control system – and safety level – could e.g. be governed

58 520L0344


1.Maximum Safety Demands

System Safety

“fault monitoring”.

A system can be protected against many electrical, hydraulic and mechanical faults by building in components as shown in the diagram:

M: Solenoid valve

registers a fault. The solenoid valve then leads the oil flow direct from pump to tank. Thus all functions are without operating pressure, i.e. locked in position, because there is

Stopping or disconnecting the pump drive motor is another safety measure, if the system reaction time can be accepted.

Note: The neutral position switch in the remote control units should not be used.

2

1BA

TP

PVEA/H/S

E

M

+

-

C

1/2

R

3

V310186.A

59520L0344


2.High Safety Demands

System Safety

connected.The method still gives a high degree of protection, but requires operator intervention. It is recommended that the neutral position switch be always connected to the electrical system. This then automatically cuts off current to the proportional valve when the remote control unit is in neutral position.

2

1

E+

-

1/2

6 7N

TP

C

M

A B

V310187.A

PVEM

60 520L0344


3.Average Safety Demands

System Safety

side module.

In a system with open centre PVP and a fixed displacement pump, the effect of the PVPX

higher operating pressure will not operate, .

The method can also be used in LS systems with a variable displacement pump and closed centre version proportional valve.

2

1

E+

-

1/2

6 7N

BA

TP

LS

M

V310188.A

PVEM

61520L0344


4.Limited Safety Demands

System Safety

position).

2

1BA

E+

-

1/2

6 7N

TP

V310189.A

PVEM

62 520L0344


Oil

Particle Content, Degree of Contamination


The main duty of the oil in a hydraulic system is to transfer energy; but it must also lubricate the moving parts in hydraulic components, protect them against corrosion, and transport dirt particles and heat out of the system. It is therefore important to choose the correct oil with the correct additives. This gives normal operation and long working life.

Mineral oil

Non-flammable fluids

The following fluids should only be used according to agreement with the Sales

Biodegradable oilsPVG 32 valves can be used in systems with rapeseed oil. The use of rapeseed oil is conditioned by

).

Oil filtration must prevent particle content from exceeding an acceptable level, i.e. an acceptable degree of contamination.

filter fineness as described in the next section.

63520L0344


Filtration


performs reliably and has a long working life. Filter manufacturers issue instructions and recommendations. It is advisable to follow them.

System filters

It is our experience that a return filter is adequate in a purely mechanically operated valve system.

The fineness of a pressure filter must be selected as described by the filter manufacturer

The filter must be fitted with pressure gauge or dirt indicator to make it possible to check the condition of the filter.

suit the max. return oil flow. Pressure filters must be fitted to suit max. pump oil flow.

Internal filtersThe filters built into PVG 32 are not intended to filter the system but to protect important components against large particles. Such particles can appear in the system as a result

contamination, etc.

64 520L0344


Standard PC Spools

To be used when PVB is with LSA/B shuttle valve Code number

157B....

To be used when PVBis without LSA/B shuttle valve

Size SizePress. compensated flow

l/min [US gal/min]ISO symbol Symbol

Press. compensated flowl/min [US gal/min]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

Closed neutral position, PC A and B

position, PC A and B

Closed neutral position, PC A

Closed neutral position, PC B

Throttled, open neutral position, PC A

Throttled, open neutral position, PC B


65520L0344


Standard PC Spools

To be used when PVB is with LSA/B shuttle valve Code number

157B....

To be used when PVB is without LSA/B shuttle valve



Press. compensated flowl/min [US gal/min]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

7473 7472

Throttled, A T neutral position, PC B

7452 7453

7563 7562

Throttled, B T neutral position , PC A

7542 7543


66 520L0344


Standard PC Spools, Hydraulic ActuationTo be used when PVB

is with LSA/B shuttle valve Code number157B....




Press. compensated flow l/min [US gal/min]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

Closed neutral position, PC A and B

Closed neutral position, PC A

Closed neutral position, PC B


67520L0344


Standard FC SpoolsTo be used when PVB






F130

[34.3]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

F130

[34.3]

Closed neutral position

Throttled, open neutral position

Closed neutral position, P A

Closed neutral position, P B


68 520L0344


Standard FC SpoolsTo be used when PVB






F130

[34.3]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

F130

[34.3]

7424 7423 7422

Throttled, A T in neutral position

7524 7523 7522

Throttled, B T in neutral position

7624 7623 7622

Closed neutral positionFloat P B F


69520L0344


Standard FC Spools, Hydraulic ActuationTo be used when PVB






E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

closed neutral position

Throttled open neutral position

PVMR, FC Spools for Friction DetentTo be used when PVB






E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

9724 9723 9722

closed neutral position

9734 9733 9732

Throttled open neutral position


70 520L0344


FC Spools for Mechanical Float Position PVMFTo be used when PVB






F130

[34.3]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

F130

[34.3]

Closed neutral positionP A F

9624 623 9622

Closed neutral position Float P B F


71520L0344


FC Spools with Linear Flow Characteristic To be used when PVB






F130

[34.3]

E100

[26.4]

D65

[17.2]

C40

[10.6]

B25

[6.6]

A10

[2.6]

AA5

[1.3]

AA5

[1.3]

A10

[2.6]

B25

[6.6]

C40

[10.6]

D65

[17.2]

E100

[26.4]

F130

[34.3]

9774 9773 9772

Closed neutral position

9752 9753 9754

Throttled, open neutral position

9762 9763 9764

Throttled, A T in neutral position

9794

B T in neutral position


74 520L0344


Order Specification

Order Specification

Both the module selection chart on the previous pages and the order form are divided

Please state

A/B pressure limiting valves, see pressure setting guidance below.

Standard and option assemblyThe PVG 32 valve group is assembled the way the module selection chart shows if the

field c.The valve group is assembled so that the mechanical actuator is mounted on the opposite end of the basic module, if the code number for PVM is written in field c of the

Reordering

given on the initial confirmation of order.

75520L0344


Pressure setting limitsThe maximum setting pressure for the pressure limiting valves LSA or LSB depends on the chosen pressure setting for shock valve PVLP. The maximum values recommended to avoid interaction can be read in the following table.The figures in the table have been calculated according to the following expressions:

A/B PPVLP

PVLP A/B

Max. pressure setting of LSA and LSB valves relative to PVLP shock valve

Order Specification

Order Specification

Setting pressurefor PVL

bar 32 63 265

725 2755 3335 3625

Max. setting pressurefor LSA/B

bar 64 235

3625

Min. settingpressurefor LSA/B

bar

435

Documents

PVG 32 Proportional Valves Technical Information - · PDF file4 520L0344 t 3FW (& t %FD PVG 32 Proportional Valve Technical Information Valve system PVG 32 is a hydraulic load sensing