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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 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical InformationFunction
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
PVG 32 Proportional ValveTechnical InformationFunction
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical InformationFunction
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
PVG 32 Proportional ValveTechnical Information
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 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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.
meansof neutral switch
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
PVG 32 Proportional ValveTechnical Information
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
meansof neutral switch
position to max. spool travel
max.ratedmin.
meansof neutral switch
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
Open centre pump side module forpumps with fixed displacement.
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/ / /
Modules and Code Numbers
27520L0344
PVG 32 Proportional ValveTechnical InformationModules and Code Numbers
PVP, Pump side Moduls
Symbol Description Code number
Open centre pump side module forpumps with fixed displacement.
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.
actuation and connection for pilot oil pressure
P = G ¾T = G ¾
Open centre pump side module forpumps with fixed displacement.
actuation and connection for pilot oil pressure
P = G ¾T = G ¾
Closed centre pump side modulepumps with variable displacement
actuation and connection for pilot oil pressure
P = G ¾T = G ¾
Connection: P = G /23/4 /4
3/4 p.P = 7/ / /2 /
28 520L0344
PVG 32 Proportional ValveTechnical Information
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/
Modules and Code Numbers
29520L0344
PVG 32 Proportional ValveTechnical InformationModules and Code Numbers
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
PVG 32 Proportional ValveTechnical Information
PVB, Basic Modules - Without Adjustable LSa/b Pressure Limiting Valves
Symbol Description Code number
No facilities forshock valves A/B
Facilities for shock 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
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
Modules and Code Numbers
31520L0344
PVG 32 Proportional ValveTechnical Information
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
Symbol Description Code number
Cover for purely mechanically operated valve
PVH, Hydraulic Actuation
Symbol Description Code number
PVH, Cover for hydraulicremote control
PVMR, Friction Detent
Symbol Description Code number
Friction detent
PVMF, Mechanical Float Position
Symbol Description Code number
PVMFMechanical float position lock
Modules and Code Numbers
32 520L0344
PVG 32 Proportional ValveTechnical InformationModules and Code Numbers
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
PVG 32 Proportional ValveTechnical Information
PVLA, Suction Valve (fitted in PVB)
Symbol Description Code number
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
Modules and Code Numbers
34 520L0344
PVG 32 Proportional ValveTechnical Information
PVS, End Plate
Symbol Description Code number
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
Modules and Code Numbers
V310062.A
V310063.ALX
V310063.ALX
V310062.A
35520L0344
PVG 32 Proportional ValveTechnical Information
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
Symbol Description Code number
PVP,Plug without check valve for openor closed centre
PVP,Plug with check valve foropen centre
Modules and Code Numbers
36 520L0344
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
Technical Characteristics
38 520L0344
PVG 32 Proportional ValveTechnical Information
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
Technical Characteristics
39520L0344
PVG 32 Proportional ValveTechnical Information
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
Technical Characteristics
40 520L0344
PVG 32 Proportional ValveTechnical Information
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
Technical Characteristics
41520L0344
PVG 32 Proportional ValveTechnical Information
PVB without pressure compensation, closed centre PVPPVB, Basic Module
Technical Characteristics
42 520L0344
PVG 32 Proportional ValveTechnical Information
PVB, Basic Module
Technical Characteristics
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
PVG 32 Proportional ValveTechnical Information
PVB, Basic Module
Technical Characteristics
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
PVG 32 Proportional ValveTechnical Information
PVLP,Shock and Suction Valve
PVLA,Suction Valve
Technical Characteristics
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
PVG 32 Proportional ValveTechnical Information
Pressure Control Spools, Characteristics in Extreme Positions
Technical Characteristics
Size A:
Size B:1: See example page 46
Size C:
Size D:2: See example page 46
46 520L0344
PVG 32 Proportional ValveTechnical Information
Pressure Control Spools, Characteristics in Extreme Positions
Examples of HowTo Use the Characteristics for Pressure Control Spools
Technical Characteristics
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
PVG 32 Proportional ValveTechnical Information
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
Technical Characteristics
48 520L0344
PVG 32 Proportional ValveTechnical Information
Characteristics for Float Position Main Spools
Technical Characteristics
Pressure drop A/B T in float position
49520L0344
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
Manually ActuatedPVG 32 – Fixed Displacement Pump
Hydraulic Systems
55520L0344
PVG 32 Proportional ValveTechnical Information
Electrically Actuated PVG 32 – Variable Displacement Pump (Electrical Actuator, Shock Valves, etc.)
Hydraulic Systems
56 520L0344
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
4.Limited Safety Demands
System Safety
position).
2
1BA
E+
-
1/2
6 7N
TP
V310189.A
PVEM
62 520L0344
PVG 32 Proportional ValveTechnical Information
Oil
Particle Content, Degree of Contamination
Other Operating Conditions
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
PVG 32 Proportional ValveTechnical Information
Filtration
Other Operating Conditions
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
PVG 32 Proportional ValveTechnical Information
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
Module Selection Chart
65520L0344
PVG 32 Proportional ValveTechnical Information
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
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]
7473 7472
Throttled, A T neutral position, PC B
7452 7453
7563 7562
Throttled, B T neutral position , PC A
7542 7543
Module Selection Chart
66 520L0344
PVG 32 Proportional ValveTechnical Information
Standard PC Spools, Hydraulic ActuationTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
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
Module Selection Chart
67520L0344
PVG 32 Proportional ValveTechnical Information
Standard FC SpoolsTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
Press. compensated flow l/min [US gal/min]
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
Module Selection Chart
68 520L0344
PVG 32 Proportional ValveTechnical Information
Standard FC SpoolsTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
Press. compensated flow l/min [US gal/min]
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
Module Selection Chart
69520L0344
PVG 32 Proportional ValveTechnical Information
Standard FC Spools, Hydraulic ActuationTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
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
Throttled open neutral position
PVMR, FC Spools for Friction DetentTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
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]
9724 9723 9722
closed neutral position
9734 9733 9732
Throttled open neutral position
Module Selection Chart
70 520L0344
PVG 32 Proportional ValveTechnical Information
FC Spools for Mechanical Float Position PVMFTo be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
Press. compensated flow l/min [US gal/min]
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
Module Selection Chart
71520L0344
PVG 32 Proportional ValveTechnical Information
FC Spools with Linear Flow Characteristic To be used when PVB
is with LSA/B shuttle valve Code number157B....
To be used when PVB is without LSA/B shuttle valve
Size SizePress. compensated flow
l/min [US gal/min]ISO symbol Symbol
Press. compensated flow l/min [US gal/min]
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
Module Selection Chart
74 520L0344
PVG 32 Proportional ValveTechnical Information
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
PVG 32 Proportional ValveTechnical Information
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