Datasheet VT Modular En

VT modular. Modular System for LSC Manifold Valve Plates

1

y 2

y 10

y 7 6 y y 8

y

y 5

y 3

y 4

9

y 1

y

Load Sensing Directional Control Valve shown as sub plate mounted valve,alternatively valve,alternatively available as sandwich valve

y

Centering spring in 2 versions for 2 pilot pressure ranges

y

Cross-sections thoroughly dimensioned in several nominal sizes

y

Shim independently adjustable start of function on each side

y

Valve control spool with integrated compensators and pressure copiers

y

Throttle check valve in pilot pressure pressure port, adjusting valve dynamics

y

Compensator downstream, for compensation, 1 per side

y

Mechanical stroke limiter independent flow limitation on each s ide.

y

Pressure copier integrated in compensator, 1 per side

flat flow-pressur f low-pressure e characteristic, y with make-up function optional

1

2 3 4 5

6 7 8 9

10 Pilot-operated pressure relief valves

Design features >> directional >> directional control valves available as sub plate mounted valves and sandwich valves >> designed >> designed for the Linde Synchron Control (LSC) – Load Sensing System >> nominal >> nominal sizes 18, 25 and 30 >> flows >> flows up to 600 l/min (size30) >> downstream >> downstream compensators (Post-Compensated LS system) >> individual characterist >> individual characteristic ic due to separate compensators compensators and pressure copiers for sides A and B >> proportional >> proportional flow distribution in case of system saturation >> modular >> modular design for the configuration of control plates for 1-12 functions >> functionality >> functionality can be modified via intermediate plates >> optionally >> optionally with hydraulic or electric piloting

Product benefits >> approved >> approved quality since LSC-introduction in 1984 >> highest >> highest flow in Load Sensing Systems in the market >> fast >> fast machine response & low hysteresis >> intuitive >> intuitive machine operation through compensating for load effects – also during multi-functioning >> maintains >> maintains flow relations, relations, even even during system saturation saturation (all functions remain active) active) >> high handling performanc >> high performance e >> low >> low energy consumption >> high >> high system efficiency >> easily adaptable to applications >> easily >> quick >> quick availability even for quantity 1

2

Linde Hydraulics Data Sheets Find the right products for your application.

Product range Product Pump Motor

Valve technology Electronics

Application Regulating pump Variable displacement pump Variable displacement motor Regulating motor Fixed displacement motor

Linde terminology

LSC manifold plate

open loop operation closed loop operation closed and open loop operation closed and open loop operation closed and open loop operation open loop operation closed or open loop operation open loop operation

HPR- 02 HPV- 02 HMV- 02 HMR- 02 HMF- 02 HMF- 02 P HMA- 02 VT modular

Pilot valve bar Control unit Peripheral equipment Software

open loop operation closed and open loop operation closed and open loop operation diagnostics and parameterization

VD7S LINC LinDiag®

Contents VT modular System explanations

4

>> Functiona >> Functionall modification modification of directional control valves 32

>> The open loop

4

>> CF25 plates

32

>> The LSC system

6

>> SW18 plates

36

>> LSC Manifold valve plate system VT modular

7

>> Work port-mounted plates

38

General technical data

8

Configuration Configuratio n of the valve system

40

Operational parameters

8

>> Structure of modular system

40

System components

9

>> Structure of position numbers

41

>> Overview

9

>> Maximum >> Maximum configurat configuration ion VT4,

>> VT base plates

9

>> Base plate VT4

10

>> Base plate VT1

12

position and direction system

44

>> Make-up module

14

>> Minimum configuratio configuration n VT4 / VT1

45

>> IF32 infrastructur infrastructure e modules

15

>> Manifold valve plate configurat configuration ion

46

>> LSC directional control valves series VW-01

19

>> Mounting the manifold valve plate

46

>> CF25 subplate mounted valves

21

>> SW18 sandwich valves

25

>> Example configurat configuration ion VT1

47

>> Control spools in directional control valves

27

>> Example configurat configuration ion VT4

48

>> Valve equipment

29

position and direction system

42

>> Maximum >> Maximum configurat configuration ion VT1,

Example configurat configurations ions

External dimensions and masses

47

50

The data on which this brochure is based correspond to the current state of development. We reserve the right to make changes in case of technical progress. progress. The dimensions and technical data of the individual installation drawings are prevailing. The features listed in this data sheet are not available in all combinations and nominal sizes. Our sales engineers will be happy to provide advice regarding the configuration of your hydraulic system and on product selection. 3

System explanations. The open loop Function diagram (example)

1 2 3 4 5

Hydraulic pump HPR- 02 E1L Manifold valve plate Pressure relief function Directional control valves Hydraulic cylinder

6 7 8 9 10

Hydraulic motor HMF- 02 Cooler Filter Tank Venting valve

Explanations The hydraulic pump for open loop applications is equipped with two main ports: A suction port and a high pressure port. The suction port is connected to the hydraulic tank, the high pressure port to a manifold valve plate (directional control valves). When the hydraulic pump is driven, it draws hydraulic fluid out of the tank. The fluid circulates always from the hydraulic pump to the manifold valve plate and from there through lines to the corresponding actuators, actuators, like hydraulic cylinders and /or hydraulic motors. The pressure relief function limits the pump pressure on the primary side (primary relief / cut-off). Flow direction and velocity of the oil determine the direction of movement and speed of the hydraulic cylinders and the sense of rotation and speed of hydraulic motors. Then the hydraulic fluid flows back to the control plate and from there usually through a cooler and filter into the tank. In addition to the main ports, hydraulic pumps and motors also have filling, ventilation and leakage oil ports. The leakage oil from hydraulic components components flows through separate lines back into the hydraulic oil tank. If the hydraulic oil tank is not pre-pressurized, a venting filter must be mounted on the hydraulic tank to ensure that no contamination can enter from the air into the tank.

4

System explanations. The open loop Circuit diagram (example)

1 2 3 4 5

Hydraulic pump HPR- 02 E1L Manifold valve plate Pressure relief function Directional control valves Hydraulic cylinder

6 7 8 9 10

Hydraulic motor HMF- 02 Cooler Filter Tank Venting valve

Explanations Hydraulic pump HPR-02 E1L P

High pressure port

T

Suction port

LS

Load Sensing port

L, U

Filling, venting and leakage oil ports Port connected in such a way, that the case is always filled with oil

Hydraulic motor HMF-02 A, B

High pressure port

L, U

Filling, venting and leakage oil ports Port connected in such a way, that the case is always filled with oil

Control plate VT P

High pressure port for pump line

T

Tank port

LS

Load Sensing port

A, B

High pressure ports, work ports

5

The LSC system The Linde Synchron Control (LSC) system is a Load-Sensing (LS) valve system with downstre downstream am compensators (post compensated). compensated). The LSC system for open hydraulic loops enables pump flow to be controlled by the flows required by the function, based on the load sensing technology (LS-technology). In an LSC system the effect of changing loads, a changing number of functions and varying load levels on different actuators is compensated. The LSC system in general works with a constant differential pressure ( ∆pLS) at the measuring orifices of all of the different directional control control valves. With this the control quality, quality, especially in the partial control range, is independent of the effective load pressure on the actuator, actuator, because the flow remains constant, even under load changes. The regulating LS pump responds to flow requests of the valve and automatically provides the required f low low,, irrespective of the load pressure needed. „Load-Sensing“ means that the regulating LS pump „feels“ the LS signal as high pressure from the actuator actuator with the highest load pressure. pressure. The LS pressure is generated by the pressure copier in the compensator of the directional control valve with the highest load pressure. The pressure copiers copiers also select the highest LS pressure. The LS signal feedback travels from the LSC valve block through a pressure line to the LS port on the pump. This is the only external signal required to control the pump flow. The ∆pLS is the difference between pump pressure and LS pressure. With short-term changes in load pressure (LS signal), the ∆pLS also changes instantaneously instantaneously.. The pump responds by instantaneously changing its displacement, until the ∆pLS returns to a constant level. Optimal functioning of the LSC system is ensured in combination with Linde regulating LS pumps. The absolute pump pressure value has no essential effect on the function. The pump automatically compensates compensates for fluctuations in drive speed by adapting its displacement accordingly. Due to the post-compensation the LSC valves are able to maintain synchronous controllability of several actuators, even under excessive exces sive system demands. If the sum of all consumers demands more flow f low than is available, there are excessive excessive system demands or saturation. Under such operating conditions the flow distribution ratio for the individual actuators is maintained. As a function of the flow shortage the ∆pLS drops accordingly. accordingly. All actuators automatically keep their full proportiona proportionality lity to each other with only a reduction in cycle speed. This reduces the requirements on the machine operator, because control lever readjustments, as are common with other systems, are not required. The LSC system enables the realization of highly efficient hydraulic systems, which are strictly machine function oriented. Our application specialists are looking forward to assist you in the individual layout of your machines. Functionality

Machine equipment

>> Highly >> Highly dynamic, demand-oriented pump control >> Load >> Load holding at the start of movement

>> Customize >> Customized d system design for optimum implementation of customer requirements

>> Excellent >> Excellent precision control characteristics without readjustment

>> Optimum >> Optimum utilization of the installed power and improved efficiency of energy consumption

>> Exact >> Exact reproducibility of machine movements through precise control of actuators

>> High >> High flexibility through manifolds with a building block concept

>> Load-independent, >> Load-independe nt, synchronous movements of several actuators

>> Compact, >> Compact, integrated solutions

>> Proport >> Proportional ional oil distribution, even with system saturation >> Automatic >> Automatic venting of directional control valve end caps

>> Optimiz >> Optimized ed plumbing due to the omission of additional logic functions

>> Optimum >> Optimum movement continuity, even for combined movements

Benefit

Further optional functions

>> Perfect >> Perfect matching of the individual operating functions for customized vehicle characteris characteristics tics

>> High >> High pressure protection for work ports >> Regeneration >> Regeneration function >> remote >> remote control for LS pressure cut-off

>> Modular >> Modular assembly of valve sections

>> Efficient >> Efficient and dynamic machine control for fast operating cycles >> Optimized >> Optimized energy balance for reduced fuel consumption and enhanced handling performance >> Simple >> Simple and safe machine operation for fatigue-free fatigue-free and efficient working >> Unsurpassed reliability under harsh operating conditions >> Unsurpassed >> Reduced >> Reduced installation times

6

LSC Manifold valve plate system VT modular The product range VT modular is a uniform modular designed manifold control plate system for open loop hydraulic applications based on the proven LSC valve technology. The series VT-01 C25-32 combines directional control valves for the control of hydraulic actuators with supply flows of up to 600 l/min at pump pressures of up to 400 bar with valve manifold plates plates to provide the common infrastructure. infrastructure. Having one pump path and two return flow paths with streamlined cross-sectio cross-sections ns of 32 mm each, the power infrastructure infrastructure is generously sized. This ensures low-loss transfer transfer for pump flows of up to 700 l/min and return flows of up to 1000 l/min. The innovative, fully modular system enables the arrangement of manifold valve plate systems with maximum 12 directional control valve functions – for any conceivable valve technology applications in open loops within the described range of capacity. The standardized interfaces >> IF32 >> IF32 (Interface (Interface nominal size 32) >> CF2 >> CF25 5 (Common Footprint Footprint nominal size 25) >> SW18 (Sandwich nominal size 18) enable free arrangement of the individual valve modules of the control plate and simple extension in already installed manifold valve plates based on the series VT-01 C25-32. The functional modules themselves are also freely configurable.

7

General technical data System pressures

Nominal flows

>> N >> No ominal pressure*

420 bar

>> Pilot >> Pilot pressure range of hydraulic control levers / pilot pressure controllers

6–25 bar (standard) 6-19 bar (optional)

* Nominal pressure: Pressure for the designation or identification of a component. At the effective pressure of 420 bar, LSC-components are rated for max. 5 % of the overall operating hours. (500 h over 10.000 operating hours)

>> Pu >> P ump (P), overall

700 l/min

>> Pu >> P ump (P), each

500 l/min

>> T >> Taank/cooler (T/K) in total

1.000 l/min

>> Dir >> Direc ecti tion onal al con contr trol ol va valv lve e (A, (A, B) B) SW1 SW18 8

230 23 0 l/mi l/min* n*

>> Dir >> Direc ecti tion onal al con contr trol ol va valv lve e (A, (A, B) B) VW1 VW18 8

250 25 0 l/mi l/min* n*


400 40 0 l/mi l/min* n*


600 60 0 l/mi l/min* n*

*) flows at ∆pLS=20 bar

Port specifications Hydraulic ports on system components are in accordance with ISO 6149-1, ISO 6162-1 and ISO 6162-2. Function

Port name

Port size

Maximum effective pressure [bar]

A, B

3/4’’, 1’’, 1 1/4’’

420

Pump

P

S AE 1 ½“

400

Load sensing signal

LS

M14x1.5

380

Tank

T

S AE 1 ½“

30

Cooler

K

S AE 1 ½“

30

Neutral tank

T0

M14x1.5

2

Pilot pressure

pSt, Z

M14x1.5

45

PCO-remote control pressure (optional)

DHS

M14x1.5

45

Pump test port

xP

M14x1.5

400

Load sensing test port

xL S

M14x1.5

380

Tank test port / auxiliary tank

xT

M27x2

30

Neutral tank test port

xT0

M14x1.5

2

Work ports

Operational parameters Permitted pressure fluids >> Mineral oil HLP acc. to DIN 51 524>> Mineral 524-2 2 >> Other >> Other pressure fluids on request.

Recommendation for viscosity ranges Pressure fluid temperature range

[°C]

–20 to +90

Operating viscosity range

[mm²/s] = [cSt]

10 to 80

Optimum operating viscosity range

[mm²/s] = [cSt]

15 to 30

Highest viscosity (short time during start up)

[mm²/s] = [cSt]

1000

Operational parameters. Filtration

8

>> for >> for reliable proper function and long service life

18 / 16 / 13 acc. to ISO 4406 or higher

>> Minimum >> Minimum requirements

20 / 18 / 15 acc. to ISO 4406 maximum size of hard contaminating particles: 200 µm

System components. Overview This section briefly introduces the available system components with their respective functions. >> VT4 >> VT4 base plate, hydraulic piloting >> VT1 >> VT1 base plate, hydraulic piloting >> IF32 >> IF32 infrastructure module for subplate mounted valves >> IF32 >> IF32 infrastructure module for subplate mounted valves with pump port >> IF32 >> IF32 infrastructure module adaptor plate IF32-SW18 >> IF32 >> IF32 infrastructure module cover plate >> IF32 pressure relief module >> IF32 >> CF25 >> CF25 subplate mounted valves size 18 >> CF25 subplate mounted valves size 25 >> CF25 >> CF25 >> CF25 subplate mounted valves size 30 >> SW18 >> SW18 sandwich valves size18 >> CF25 >> CF25 intermediate plate LS disabled >> CF25 >> CF25 intermediate plate for regeneration >> CF25 >> CF25 cover plate >> SW18 >> SW18 intermediate plate LS disabled >> SW18 >> SW18 cover plate >> Tank-bypass >> Tank-bypass plate 0.75“ >> Tank-bypass >> Tank-bypass plate 1.00“

System components. VT base plates The VT base plate is i s the basic element of this modular system. It provides the basic infrastructure to supply the power and signal paths for all attached directional control control valves and base plate extensions. Depending on the design further basic functions can be integrated integrat ed in the VT base plates, such as the complete pressure relief for the hydraulic system. The VT base plates have various type dependent interfaces. These can be used to connect directional control valve modules and infrastructure modules. >> The >> The CF25 interface provides interface provides for the direct attachment of subplate mounted directional control valve modules of Linde series VW-01. The CF25 interfac interface e connects in parallel into the infrastructure provided by the VT base plate. The CF25 interfac interface e has been designed for valve supply flows of max. 600 l/min. >>The >> The SW18 interface is interface is used for the direct attachment of max. three directional control valve modules of Linde series VW18S-01 in sandwich design. The infrastructure provided by the VT base plate is passed through each of the directional control valve modules. The SW18 interface has been designed for valve supply flows of max . 230 l/min. >> The >> The IF32 interface serves interface serves as a continuation of the infrastructure channels in the VT base plate by means of infrastructure modules. Those have CF25 and SW18 interfaces. Further directional control valves with CF25 or SW18 interfaces can be connected to these interfaces. The infrastructure modules may contain further infrastructure functions. The IF32 interface has been designed for pump flows of max. 700 l/min.

9

System components. components. Base plate VT4-01 C25C25-32 32 H The base plate VT4-01 C25-32 H, hereafter hereafter referred to as VT4, is designed with three CF25, one IF32 and one SW18 interface. interface. In the maximum configuration this allows for a combination of manifold valve plates with up to twelve directional control valve functions. >> Three subplate mounted directional control >> Three control valve modules directly on the CF25 interfac interfaces es of the VT4 >> Maximum >> Maximum three sub plate mounted directional control valve modules on infrastructure modules, which are directly connected to the IF32 interface of the VT4 >> Maximum >> Maximum three sandwich-type directional control valve modules directly connected to the SW18 interface of the VT4 >> Maximum >> Maximum three sandwich-type directional control valve modules connected to the IF32 infrastructure modules The VT4 base plate has the following integrated functions >> LS pressure cut off (LS-PCO) with optional remote control of the response pressure (Remote LS-PCO). >> Unload valve (opens the pump path to tank when the >> Unload

∆pLS is exceeding 45 bar)

>> LS >> LS drain (relieves the pressure in the LS line when no directional control valve is activated) >> Automatic >> Automatic bleed valves for the hydraulic actuation of the CF25 directional control valve modules. >> 3xM16 threads and 5xM12 threads for mounting purpose >> 3xM16

Function

Port Name

Pump

P

Tank

T

Cooler

K

LS

LS

Neutral tank

T0

LS test port

xLS

Pump test port

xP

Tank test port / auxiliary tank

xT

Neutral tank test port

xT0

PCO-remote control pressure (optional)

DHS

Pilot pressure

pSt

For further information about sizes and pressure ratings, see section «port specifications» in chapter «general technical data». M16 M12

Mass Dimensions W×H×D 10

approx. 70.8 kg 344×114.5×314 mm

System components. components. Base plate VT4-01 C25C25-32 32 H Circuit diagram with optional make-up module

LS pressure cut-off (LS-PCO)

LS-PCO remote control (optional)

The basis level of the LS pressure cut-off can be set to the following values in various pressure stages:

If the option «LS-PCO remote control» is selected at the order, the response pressure of the LS pressure cut-off (LS-PCO) can be raised by the amount of the pilot pressure level (usually 30 bar) applied to the DHS port. If the option is not ordered, the sealed metal plug on the DHS port must remain closed.

Without LS-PCO remote control option: 160-370 bar With LS-PCO remote control option: 160-330 bar

A = number of valves with locked actuator The diagram shows the characteristic characteristic for 280 bar without PCO remote control.

The diagram shows a remote LS-PCO characteristic characteristic for 300 bar LS-PCO.

11

System components. Base plate VT1-01 C25-32 H The base plate VT1-01 C25-32 H, hereafter referred to as VT1, is designed with one CF25 and one IF32 interface. The maximum configuration configurat ion allows for manifold valve plates with up to 3 directional control control valve functions. >> One subplate mounted directional control valve module directly on the CF25 interface >> One >> Maximum >> Maximum two subplate mounted directional control valve modules on two infrastructure modules, which are directly connected to the IF32 interface of the VT1 Apart from the automatic bleed function for the hydraulic actuation of the CF25 directional control valve modules, no further functions are integrated in the base plate of the VT1. For this purpose one must always add a pressure relief module on the IF32 interface interfac e when creating an independently working VT1 based control plate. The VT1 provides four M12 threads for mounting purpose. If the application requires the combination of a VT1 based control plate with a VT4 based control plate, the pressure relief function of VT4 can be utilized through an external plumbing. In this case the VT1 does not require an IF32 relief module.

Function

Port name

Pump

P

Tank

T

Leak oil

T0

Load sensing signal

LSA , LSB

For further information about sizes and pressure ratings, ratings, see section «port specifications» in chapter «general technical data».

M12

Mass Dimensions W×H×D

12

approx. 18.5 kg 120×110×220 mm

System components. Base plate VT1-01 C25-32 H Circuit diagram

13

System components. Make-up module The VT4 and VT1 base plates can be optionally fitted with a make-up module on the external return flow ports, to pressurize pressurize the oil flow in the return flow paths with a defined pressure value. This boosts the make-up function of the work port relief valves in the VW directional control valves.


approx. 11.6 kg 109×98x175 mm

Function

Port name

Tank

T

Cooler

K

For further information about sizes and pressure ratings, see section «port specifications» in chapter «general technical data».

Characteristic of the cooler and tank pressurization function

A= dynamic pressure on T/K B= return flow quantity 14

System components. components. IF32 infrastructure modules Infrastructure modules can be attached to the IF32 interfac Infrastructure interface e of VT base plates series VT-01 C25-32 to provide additional subplate mounted and sandwich-type directional control control valve modules. Depending on their design, VT base plates can be fitted with max. three infrastructure modules connected in series per IF32 interfac interface. e. IF32 infrastructur infrastructure e modules with CF25 interfac interface e always contain the automatic bleed valves for the hydraulic actuation of the CF25 directional control valve modules to be assembled. The following IF32 infrastructure modules are available >> IF32 >> IF32 infrastructure module for CF25 subplate mounted valve module IF32 module with CF-25 interface interface to mount a directional control subplate mounted valve module >> IF32 >> IF32 infrastructure module for CF-25 subplate mounted valve module with additional pump port as above, but with additional SAE 1 ½“ pump port >> IF32 >> IF32 adaptor plate for SW18 IF32 module with SW18 interface for attachment of sandwich-type directional control valve modules (with threads to mount the assembly on a bracket) >> IF32 >> IF32 cover plate Plate to cover the IF32 infrastructur infrastructure e channels leak l eak and pressure tight (with threads to mount the assembly on a bracket) >> IF32 >> IF32 relief module The IF32 relief module (with threads to mount the assembly on a bracket) contains basic functions to protect the hydraulic system: – LS pressure cut off (LS-PCO) with optional LS-PCO remote control (Remote LS-PCO) – Unload valve (opens the pump path to the tank when the

∆pLS is exceeding 45 bar)

– LS drain (relieves the pressure in the LS line, when no directional control control valve is activated) These functions are integrated in the VT4. Should the application require the operation of a manifold valve plate based on the VT1 base plate without being connected to a protected system, the use of an IF32 pressure relief module is mandatory. Characteristic Characteris tic of the relief function, see base plate VT4.

IF32 infrastructure module for subplate mounted valves To extend the VT base plate by another CF25 interface. This module includes the automatic bleed function for hydraulic actuation of the CF25 subplate mounted valves.


approx. 19 kg 120×110×220 mm 15

System components. components. IF32 infrastructure modules IF32 infrastructure module for subplate mounted valves with pump port To extend the VT base plate by another CF25 interface with an additional pump port.

Function

Port name

Pump

P



16

approx. 18.6 kg 120×110×220 mm

System components. components. IF32 infrastructure modules IF32 infrastructure module adaptor plate IF32-SW18 The IF32 infrastructure module „Adaptor plate IF32-SW18“ creates a transition between these two interfaces. Four M12 threads serve the purpose of mounting the assembly on a bracket.

M12


approx. 8.1 kg 60×104×218 mm

IF32 infrastructure module cover plate The cover plate closes the stack on the IF32 interface leak and pressure tight. Four M12 threads serve the purpose of mounting the assembly on a bracket. M12


approx. 9.9 kg 60×104×218 mm

17

System components. components. IF32 infrastructure modules IF32 pressure relief module The IF32 relief module provides pressure relief (and LS-PCO) function, even as end plate. The functions for pressure pressure relief and LS drain are identical with the ones of the VT4 base plate. Four M12 threads serve the purpose of mounting the assembly on a bracket.

M12


approx. 12.6 kg 70×184x288 mm

Function Load sensing signal

Port name LS

PCO remote

DHS

Load sensing test

xLS

Pump test

xP


Circuit diagram

Characteristic of the pressure relief functions, Characteristic see base plate VT4.

18

System components. components. LSC directional control valves series VW-01 Directional control valves series VW-01 serve the purpose of dividing and controlling the supply flow fed through the infrastructure of the VT base plate to the different actuators actuators and the return flows from the actuators. Based on the LSC technology they are designed as LS valves with a downstre downstream am compensator and a pressure copier individual for each actuator side. Compensators and pressure copiers are integrated in the hollow control spool design. The individual selection of compensator and pressure copier per side enables optimal matching to the application and ensures a high level of flexibility and functionality. The compensators compensate the system pressure down to the actuator load pressure and maintain the pressure drop over the control edge of the control spool (measuring orifice) at a constant level, until saturation is reached. At the start of control spool piloting the compensators open the path between pump and actuator only after the pump pressure has reached the load pressure level. This ensures that a function wil l not drop off when being actuated under load.

Piloting In all directional control valves series VW-01 the control spool is held in centered position by centering springs on either side. They are supported inside the control caps, through which the hydraulic pilot pressure signals are fed to the faces of the control spool. When a hydraulic pilot pressure signal is applied, the control spool is moved out of neutral position in accordance accordance with the characteristic characteris tic of the centering spring, whereby whereby one work port of the valve section is opened to the pump path, path, while the other work port is relieved into the return flow passage. Depending on the pilot pressure controller (control (control lever) two pilot pressure ranges for LSC valves are available: >> Standard >> Standard:: 6 to 25 bar >> Alterna >> Alternatively: tively: 6 to 19 bar

Control lever characteristic 2 100 %

3 4

1

Contr Co ntrol ol lev lever er str stroke oke or ang angle le

2

Pilo Pi lott pres pressu sure re / val valve ve flo flow w

3

Pressu Pre ssure re ra range nge of co contr ntrol ol lev lever er

4

Pres Pr essu sure re ran range ge of of LSC LSC valv valve e

5

Star St artt of fu func ncti tion on Control lever pilot pressure LSC valve flow

0%

1 0%

5

50 %

100 %

19

System components. components. LSC directional control valves series VW-01 With respect to their characteris characteristics, tics, directional control valves series VW- 01 can be side selectively configured according according to their individual targeted application. >> Control >> Control spool characteristic Various control spools with matched compensator/pressure copier combinations: – Symmetric control spools for rotary actuators (motors) and synchronized speed cylinders (contro (controll spool S1x/S2x) – Asymmetric control spools for differential cylinders (control spool A1x) >> Start >> Start of function at the actuator movement function The start of actuator movement can be selected within the specified pilot pressure range. >> Control >> Control speed The positioning speed of the control spool can be influenced via throttle check valves in the pilot pressure ports. >> Control >> Control spool stroke The stroke of the control spool can be limited by stop screws. This enables optimal adjustment of the work port flow, flow, based on the maximum available flow of a control control spool. >> Cavity >> Cavity for work port relief valves The cavities can be used differently, depending on the application: – combined work port relief pressure relief/make-up valve – make-up valve – plug >> Control >> Control cap orientation The orientation of the pilot pressure port on the valve control cap can be altered in 90° steps. The functionality of directional control valve series VW-01can be further modified with intermediate plates and work port-mounted port-mounted plates. The following directional control valves series VW- 01 are available. CF25 subplate mounted valves

SW18 sandwich mounted valves

Size

18

25

30

18

Q*max [l/min] P -> A , B

250

400

600

230

Qmax [l/min] A -> T

350

560

840

350

Qmax [l/min] B -> T

250

400

600

250

A, B

3/4“

1“

11/4“

3/4“

pStX , pstY

M14×1.5

*) flows at ∆pLS=20 bar

Leakage characteristics of valves without additional measures Test conditions Pressure

size p = 200 bar

Viscosity

υ

Standard piston clearance

s = 13 µm

Q [ml/min] Without work port valve

With VD20-03 work port valve

18

50

60

25

110

120

30

120

130

= 30 cSt

See chapter <> for further details on VD20-03.

20

System components. CF25 subplate mounted valves The CF25 sub plate mounted valves are designed for attachment to the CF25 interfaces on VT base plates and IF32 infrastructure modules in three nominal sizes with the following maximum possible flows (at ∆pLS=20 bar): >> VW18-01: >> VW18-01: 250 l/min >> VW25-01: >> VW25-01: 400 l/min >> VW30-01: >> VW30-01: 600 l/min The specified flows are independent from the position of the CF25 interface on the VT base plate or the position of the IF32 infrastructure module with respect to the VT base plate, because the available CF25 interfac interfaces es are arranged parallel to the power infrastructure of the VT base plate. Besides the general characteristics of directional control valves series VW-01, CF25 subplate mounted valves have the following characteristics: >> Hydraulic piloting is piloting is possible through the pilot pressure ports on the valve caps, as well as through the pilot pressure channels in the valve footprint CF25. >> Automatic bleeding (obligatory) bleeding (obligatory) of pilot pressure lines and pilot pressure caps through the CF25 interface (by bleed valves in the VT base plates and IF32 infrastructure modules) >> Restrictor orifice (side orifice (side selective/optio selective/optional) nal)

Restrictor orifice The two tank paths of the CF25 interface in VT base plates and IF32 infrastructure modules have a spot face to take up orifices. These orifices increase the return flow pressure and improve the control of high return flows. This prevents cavitation in the supply side in case of negative loads. Orifices with diameters of 10 mm and 15 mm are available. The following diagram helps to choose suitable orifices:

21

System components. CF25 subplate mounted valves VW18-CF25


22

approx. 18.4 kg 102×155×395 mm



approx. 18.2 kg 104×125×436 mm

23



approx. 27.2 kg 102×192×428 mm

Circuit diagram for CF25 subplate mounted valves Placeholder for circuit symbols 1

Control spo spool

2

Work por Work portt pres pressu sure re rel relie ief/ f/ Make-up valve (PRV/MUV)

3

Thro Th rott ttle le ch chec eckk val valve ve TC TCV V

Further information can be found in the sections about control spools in directional control control valves and valve equipment.

24

System components. SW18 sandwich valves The SW18 sandwich valves can be mounted to the SW18 interfac i nterfaces es of VT base plates, to the IF-32 infrastructure infrastructure modules or to other SW18 sandwich valves. Please notice notice that maximum three SW18 valve sections can be connected connected in series. VW18S-01 valve sections are are designed in nominal size 18: Maximum flow VW18S-01: 230 l/min (at ∆pLS=20 bar) The specified flow refers to an SW18 sandwich valve section which is directly attached to the VT base plate or mounted on an IF32 infrastructure module. module. Concerning further SW18 valve sections one must consider that the maximum flow depends on their position in the valve stack (based on the serial arrangement of the SW18 interface which is infrastructure-related. See chapter <>.). Influence of valve position on flow

A B C D E F

VW18-CF25 VW18-CF 25 sub subpla plate te mou mounte nted d val valve ve VW18-SW18 s an andwich valve at position 1 in stack : VW18-SW18 sandwich valve at position 2 in stack : VW18-SW18 s an andwich valve at position 3 in stack : Flow Spool st stroke

100 % flo flow w 92 % flow (230 l/min) 85 % flow (215 l/min) 78 % flow (195 l/min)

In difference to the general general characteristics of subplate mounted mounted directional control control valves series VW-01, SW18 sandwich valves have the following characteris characteristics: tics: >> Sandwich-type valve housing for housing for SW18 interfac interface, e, unlike sub plate mounted valve housing for CF25 interfac interface. e. >> Automatic bleeding (optional) bleeding (optional) of pilot pressure lines and pilot pressure caps by bleed valves directly in housing or valve section. >> No restrictor orifices available.

25

System components. SW18 sandwich valves SW18 sandwich valve


approx. 15.5 kg 75×132×395 mm

Circuit diagram SW18 sandwi sandwich ch valves Placeholder for circuit symbols 1

Control spo spool

2

Work po Work port rt pr pres essu sure re re relie lief/ f/ make-up valve (PRV/MUV)

3


Further information can be found in the sections about control spools in directional control control valves and valve equipment. 26

System components. Control spools in directional control valves Spool types The following control spools are available for directional control valves CF25 and SW18: >> Type A1x

for asymmetric actuators

>> Type S1x

for symmetric actuators without A-BA-B-TT path in neutral position

>> Type S2x, S3x

for symmetric actuators with A-BA-B-TT path in neutral position

Standard spools See following pages for characterist characteristics ics of different standard spool types.

Special spools These spools are available for special purposes. Further details are available on request: >> Type A12

sizes 25, 30

Regeneration Regenerat ion spool, for example for boom cylinder function

>> Type S30

sizes 18, 25

Track propel spool for straight propelling of two crawler drives

Circuit symbol A1x / S1x

Circuit symbol S2x / S3x

27

System components. Control spools in directional control valves Standard spools The following characteristics apply for a

28

∆pLS=20 bar on the

valve.

Characteristic spool type A10, size18

Characteristic spool types S12 and S22, size18





A Spool stroke

System components. Valve equipment The directional control valves can be equipped with a combined work port pressure relief and make-up valve VD20-03, a pure make-up valve, or a plug in the cavities on either side.

Circuit diagram with work port pressure relief and make-up valve (PRV/MUV) Placeholder for circuit symbols 1

Control spo spool

3

Thro Th rott ttle le che check ck val valve ve TCV TCV

Characteristic of optional work port PRV/MUV

The characteristic was determined using a valve with a rated pressure of 360 bar at a flow of 20 l/min. The combined work port pressure relief and make-up valves VD20- 03 are available in pressure settings ranging from 210 to 400 bar.

29

System components. Valve equipment Circuit diagram with make-up valve MUV Placeholder for circuit symbols

Char Ch arac acte teri rist stic ic of ma makkee-up up va valv lve e in in PRV PRV/M /MUV UV VD 2020-30 30

1

Control spo spool

3


Char Ch arac acte teri rist stic ic of ma makkee-up up va valv lve e MUV MUV

Circuit diagram without valve, with plugs Placeholder for circuit symbols

30

1

Control spo spool

3


System components. Valve equipment For the purpose of influencing i nfluencing the control speed of the control spool the directional control valves can be equipped with throttle check valves. These throttle check valves have appropriate threads to match the pilot pressure ports in the control caps.

Circuit diagram with throttle check valves Placeholder for circuit symbols 1

Control spo spool

2

Secondary Second ary press pressure ure relie relief/m f/make ake-up -up valve valve (PRV/MUV)

The stroke times of directional control valves can be selected in the categories: >> fast >> fast >> dynamic >> dynamic >> medium >> medium >> slow >> slow The stroke times for various nominal valve sizes and different pilot pressure ranges (springs) can be taken from the table below. Besides the option of no throttle check valve, the following sizes are available: 0.6, 0.8, 1.0, 1.15, 1.35.

Control times measured at 60 °C - 27 cSt size18 Category Fast (60–200 ms) Dynamic 6–25 bar (200–300 ms) spring Medium

size25

Tolerances [ms]

tstroke [ms]/ ∅ [mm]

tdestroke [ms]/ ∅ [mm]

tstroke [ms]/ ∅ [mm]


±20

80/ w/o

90/ w/o

150/ w/o

170/ w/o

size30 tstroke [ms]/ ∅ [mm]


220/ w/o

290/ w/o

±30

200/1.0

220/1.0

220/1.35

250/1.35

±30

330/0.8

360/0.8

325/1.15

360/1.15

320/1.35

420/1.35

Slow (400–650 ms)

±40

480/0.6

520/0.6

390/1.0

440/1.0

470/1.15

620/1.15

Fast (50–200 ms)

±20

70/ w/o

90/ w/o

140/ w/o

180/ w/o 200/ w/o

310/ w/o

(300-400 ms)

Dynamic 6–19 bar (200–300 ms) spring Medium (300-400 ms) Slow (400–700 ms)

±30

180/1.0

240/1.0

200/1.35

260/1.35

±30

290/0.8

400/0.8

290/1.15

380/1.15

290/1.35

440/1.35

±40

410/0.6

570/0.6

350/1.0

460/1.0

430/1.15

650/1.15

31

System components. Functional modification of directional control valves The functionality of directional control valve series VW- 01 can be further extended with intermediate plates, cover cover plates and work port-mounted port-m ounted plates. Intermediate plates can be mounted under the valve section on its mounting interface (CF25/SW18). Work port-mounted port-mounted plates are assembled after the valve section directly to the SAE work ports. Cover plates close the corresponding interface interface (CF25, SW18) leak and pressure tight.

System components. CF25 plates CF25 intermediate plates and CF25 cover plates are to be mounted to the CF25 interface. Intermediate plates are used to generate a certain upstream function for the subplate mounted valve arranged above it. This enables specific optimization of valve functions onto the application. The following CF25 intermediate plates are available: >> CF25 >> CF25 intermediate plate LS disabled >> CF25 >> CF25 intermediate plate for regeneration

CF25 intermediate plate LS disabled When a pilot pressure signal is applied to ports pStA or pStB, the intermediate plate LS disabled interrupts the forwarding of the LS signal from the subplate mounted valve to the VT base plate and adjacent valves. The LS signal transmission from the VT base plate towards towar ds the subplate mounted valve remains active. No other signals will be interrupted. In a multi-functional control this function makes sure that the system pressure is not determined by the load pressure of the disabled valve section, after this section has moved an actuator against its end stop. Without this function the system pressure would increase up to max. LS pressure (LS-PCO value). All other functions would have their flows assigned with significantly higher compensation losses. With this disable function the system pressure is defined by the next lower function. The valve section with disabled LS L S pressure still receives oil with the current system pressure. This reduces compensation losses and ensures a pressure supply, which is sufficient for the section that has been moved against the end stop. Overall system efficiency increases, without a noticeably impairment of the function. Application example Closing a grapple and holding it closed to clamp material, while extending the arm at the same time. In this case the pilot pressure signal to extend the arm disables the L S signal from closing the grapple.

32

System components. CF25 plates CF25 intermediate plate LS disabled


approx. 5.3 kg 102×40×218 mm

Function

Port name

Disable LS

pstA , pstB


Thread positions

LSA disabled

LSB disabled

LSA and LSB disabled

D1

closed

open

closed

D2

open

closed

closed

D3

open

closed

open

D4

closed

open

open

33

System components. CF25 plates CF25 intermediate plate LS disabled Characteristic of LS disabled function 0

LS si sign gnal al di disa sabl bled ed

1

LS si sign gnaal ac activ ive e

CF25 intermediate plate for regeneration With the regeneration plate the return flow to the tank from the head side of a differential cylinder is diverted to the make-up valve of the rod side. The remaining tank return connection of the manifold block must be equipped with a return flow throttle (see section CF25 subplate mounted valves), to increase the return flow pressure. This return oil utilization is frequently used for functions which e.g. retract the cylinder by gravity and in which the rod side is hardly ever pressurized or only with very low pressure values. The use of the intermediate plate for regeneration demands the use of a regeneration spool in the directional control valve. See section «special spools» in chapter «System components. Control spools in directional control valves» for further information. Application example Lowering the boom. Very often the required flow from the pump to the rod side can be distinctly reduced to achieve a considerab considerable le gain in efficiency.


34

approx. 4.9 kg 102×35×210 mm

System components. CF25 plates CF25 cover plate Unused CF25 interfaces must each be closed leak and pressure tight with a CF25 cover plate. plate.


approx. 6.0 kg 102×38×210 mm

35

System components. SW18 plates SW18 intermediate plates and cover plates are mounted to SW18 interfaces. SW18 intermediate plates are mounted between SW18 interface interfac e and SW18 sandwich valve or between two sandwich valves. They are used to generate a specific function for the following sandwich valve. The following SW18 plates are available: >> SW18 intermediate plate LS disabled >> SW18 cover plate The functions are identical with the function of the corresponding CF25 plates.

SW18 intermediate plate LS disabled


Function Disable LS

approx. 4.7 kg 40×92×181 mm

Port name Z


Thread position

LSA disabled

D1

closed

D2

open

LSB disabled

LSA and LSB disabled

Plate mounted 180° turned

Characteristic Characterist ic see „LS disabled function“ of the CF25 plate. The port Z corresponds with the pstA and pstB port.

36

open closed

System components. SW18 plates SW18 cover plate If the SW18 interface of a VT4 base plate, a mounted SW18 sandwich valve or an SW18 intermediate plate is not used, it must be closed with an SW18 cover plate leak and pressure tight.


approx. 3.4 kg 26×95×182 mm

37

System components. Work port-mounted plates Work port-mounted plates are mounted to the work ports of the directional control valves.

Tank bypass plates A tank bypass valve with the corresp corresponding onding nominal size can be mounted to any directional control valve from Linde. The following tank bypass plates are available: >> T >> Tank ank bypass plate 0.75“ for size18 >> T >> Tank ank bypass plate 1.00“ for size 25 A tank bypass plate serves the purpose of reducing return flow pressures. The work port-mounted plate and a separate tank path thereby provide an additional connection between between work port and tank, tank , in addition to the internal connection inside the valve. The switching function (not proportional) is activated by the pilot pressure of the corresponding valve via the pilot signal, which also controls the valve itself. itself. The pilot line is routed externally to the port pst. This option, which can be modularly mounted to each valve of size 18 and size 25, considerably reduces the return flow pressure, thereby enhancing the efficiency of the application. Function

Port Name

Size (0.75’’)

Size (1’’)

Valve work port

A1

SAE 3/4“

SAE 1“

Connection to actuator

A2

SAE 3/4’’

SAE 1’’

Activate bypass

pst

M14x1.5

T

SAE 3/4“

Tank ∅ o off

throttle check valve

Circuit diagram tank bypass plates

380 bar

38

0.6 mm


-

System components. Work port-mounted plates Tank bypass plate 0.75“


approx. 4.5 kg 70×61×227.5 mm

Tank bypass plate 1.00“


approx. 5.2 kg 80×57×237.5 mm 39

Configuration Configura tion of the valve system. Structure of modular system The modular system of the VT-01 range enables flexible and application oriented configuration of manifold valve plate systems based on the available modules of a building-block system. The following modules are available: >> VT >> VT base plate >> IF32 >> IF32 infrastructure modules >> CF25 >> CF25 directional control valve modules >> SW18 >> SW18 directional control valve modules A CF25 directional control valve module consists of the actual CF25 directional control valve section and possibly of the mounted intermediate plate and/or a work port-mounted plate. The control plate system configured configured on the basis of modules is sub-divided into different stacks. Stack 0: Stack Stackk 1: Stac

VT base plate plate includi including ng directio directional nal contro controll valve module moduless maximum maxim um three IF32 infrastr infrastructur ucture e modules including including directio directional nal control control valve valve modules, modules, directly mounted or attached to the VT base plate Stack 2: maximum three three SW18 sandwich-type directional control valve modules modules and one SW18 intermediate plate on adaptor plate on stack 1 Stack 3: maximum three three SW18 sandwich-type directional control valve modules modules and one SW18 intermediate plate, directly on the VT base plate Annotation concerning the stacks >> The >> The SW18 stacks 2 and 3 must only contain one intermediate plate. >> The >> The possibilities of extending the VT base plate (stack 0) depend on the design as VT1 or VT4. >> Stack >> Stack 2 and 3 are only available for the VT4 baseplate. >> The positions of the directional control >> The control valve modules are clearly determined by the stack and the position of the module in the stack.

40

Configuration Configura tion of the valve system. Structure of position numbers This section explains the structure and assignment of position numbers. Position numbers consist of three integers each separated by a dot, and are structured as follows:

X

X

X

= Position number Stack

currently not used >> always „0“

Options

Position of valve module in the assembled stack 1)

Options

Number of stack

Options

Coun Co unti ting ng di dire rect ctio ion: n:

1)

VT1- 01 VT4- 01 01

0

0

0

1

0

0

2

–

0

3

–

0

0

1

1-3

1

1

1-2

2

2

1-3

3

3

1-3

0

0

0

1

1

1

2

2

3

3

– Stac Stacks ks 0–2 0–2:: Dire Direct ctio ion n „L“ „L“ – Stack 3: Direction „R“

Example 1

.

3

.

0

CF-25 directional control valve module in position 3 in stack 1 CF-25 (only present on control plate on basis of VT4)

41

Maximum configuration configuration VT4, position and direction system Stack 2: SW18 0 . 3 . 2

0 . 2 . 2

0 . 1 . 2

Stack 0: VT

Stack 1: IF 32 0 . 3 . 1

0 . 2 . 1

0 . 1 . 1

0 . 3 . 0

0 . 2 . 0

Stack 3: SW18 0 . 1 . 0

0 . 2 . 3

0 . 3 . 3

o

o

u

u

A

A

B

B

L

o

top

u

bottom

A* Port side A on base plat plate e B* Port side B on base plat plate e L

left

R

right

*) Since direct directional ional contro controll subplate subplate mounted mounted valves, valves, depending on the configuration, can be mounted 180° turned, the work plate side A of the directional control valve does not necessarily have to correspond with side A of the base plate.

42

0 . 1 . 3

R

Maximum configuration configuration VT4, position and direction system The VT4 may consist of maximum four stacks (stack 0 to stack 3). The following shows the maximum configuration of a VT4.

Stack

Designation

0

VT4 base plate

+ make-up module 1

2

3

Base plate extension

Sandwich extension L

Sandwich extension R

Position of control plate

IF32 IF 32 mod module ule Si Size ze of of valv valve e section

Spool type

Work port Intermediate relief valves plate

Work portmounted plate

0.1.0

-

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

0.2.0

-

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

0.3.0

-

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

1.1.0

for subplate mounted valve

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

1.2.0


VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

1.3.0

for subplate mounted valve with pump port

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

End plate

Adaptor plate IF32/SW18

-

-

-

-

-

2.1.0

-

VW18S- 01

not relevant

PRV/MUV

-

Tank bypass 0.75

2.2.0

-

VW18S- 01

not relevant

PRV/MUV

-

Tank bypass 0.75

2.3.0

-

VW18S- 01

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

End plate

Cover plate

-

-

-

-

-

3.1.0

-

VW18S- 01

not relevant

PRV/MUV

-

Tank bypass 0.75

3.2.0

-

VW18S- 01

not relevant

PRV/MUV

-

Tank bypass 0.75

3.3.0

-

VW18S- 01

not relevant

PRV/MUV

LS disabled

Tank bypass 0.75

End plate

Cover plate

-

-

-

-

-

43

Maximum configuration configuration VT1, position and direction system The VT1 may consist of maximum two stacks (stack 0 and stack 1). The following shows the maximum configuration of a VT1. Abbreviations: MUV = Make-Up Valve PRV/ PR V/MU MUV V = Co Comb mbin inat atio ion n of pr pres essu sure re rel relie ieff and and make make-u -up p valv valve e Stac St ackk De Desi sign gnat atio ion n

0

VT1 base plate + make-up module

1



IF32 IF 32 mo modu dule le

0.1.0

-

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 1.0

1.1.0

For subplate mounted valve

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 1.0

1.2.0

For subplate mounted valve

VW25-01 CF25

not relevant

PRV/MUV

LS disabled

Tank bypass 1.0

End plate

Pressure relief module

-

-

-

-

-

Stack 1: IF32 1.2.0

Size Si ze of val alve ve section

Spool type

Work port Intermediate Work portrelief valves plate mounted plate

Stack 0: VT 1.1.0

O top

0.1.0

U bottom A* Port side A on base plat plate e B* Port side B on base plat plate e L O

O

U

U

A

A

B

B

L

44

left

*) Since direct directional ional contro controll mounted mounted valves, valves, depending depending on the configuration, can be mounted 180° turned, the consumer side A of the directional control valve does not necessarily have to correspond with side A of the base plate.

Configuration Configura tion of the valve system. Minimum configur configuration ation VT4 The minimum configuration of a VT4 consists of three stacks, whereby stack 1 and stack 3 only consist of a cover plate each for the respective interface.

Stack

Designation

0

VT4 base plate

1

2

3






Spool type



0.1.0

-

VW25-01 CF25

not relevant

PRV/MUV

-

-

0.2.0

-

VW25-01 CF25

not relevant

PRV/MUV

-

-

0.3.0

-

VW25-01 CF25

not relevant

PRV/MUV

-

-

1.1.0

-

-

-

-

-

-

1.2.0

-

-

-

-

-

-

1.3.0

-

-

-

-

-

-

End plate

Cover plate

-

-

-

-

-

2.1.0

-

-

-

-

-

-

2.2.0

-

-

-

-

-

-

2.3.0

-

-

-

-

-

-

End plate

-

-

-

-

-

-

3.1.0

-

-

-

-

-

-

3.2.0

-

-

-

-

-

-

3.3.0

-

-

-

-

-

-

End plate

Cover plate

-

-

-

-

-

Configuration Configura tion of the valve system. Minimum configur configuration ation VT1 The minimum configuration of a VT1 consists of two stacks, whereby stack 1 only consists of a cover plate for the IF32 interface.

Stack

Designation

0

VT1 base plate

1




Spool type



0.1.0

-

VW25-01 CF25

not relevant

PRV/MUV

-

-

1.1.0

-

-

-

-

-

-

1.2.0

-

-

-

-

-

-

End plate

Cover plate

-

-

-

-

-

45

Configuration Configura tion of the valve system. Manifold M anifold valve plate configur configuration ation Step 1:

Determination of the directional control valve functions of the control plate required for the application.

Step 2:

Selection of the VT base plate and assignment of directional control control valve modules to the module stack.

Number of valve functions

VT base plate

Directional control valve module

1–2

VT1

1-2× CF25 subplate mounted valve

3

VT1

3× CF25 subplate mounted valve

VT4

3× CF25 subplate mounted valve

VT4

Depending on the required flows.

4–12

The distribution of functions to stacks 1, 2 and 3 depends on the required actuator actuator flows. Actuator flow (at ∆pLS=20 bar)

Directional control valve module

Comment

up to 600 l/min

VW30 - 01 CF25

–

up to 400 l/min

VW25- 01 CF25

–

up to 250 l/min

VW18- 01 CF25

–

VW18S- 01

The maximum flow depends depends on the position position of the valve in the stack (see section „SW18 sandwich valves“)

up to 230 l/min

Step 3:

Configuration Configurat ion of directional control valve modules per position on the manifold valve plate in the following sequence: >> Ba >> Basic sic functions of the directional control valve section. With differential cylinders as actuators, the piston or head side is connected to work port A, the rod side is connected to work port B. >> Necessary >> Necessary extension functions by attached intermediate plates. Only maximum one intermediate plate per CF25 directional control control valve module and per SW18 directional control valve module is permitted. >> Necessary >> Necessary extension functions by attached work port-mounted plate.

Mounting the manifold valve plate The completely configured manifold valve plate must be fastened at the place of installation. The system components are provided with appropriate threaded bores bores for that purpose. To ensure a proper fixation, screws with property class 8.8 must be used together with the correct bolting torques. Important note In specific cases additional stress free bearings are required. In this case the following conditions do apply: >> If the VT4 base plate is solely used without infrastructure modules, no further measures are required. >> If The control plate is fastened by the existing threaded bores. >> If >> If IF32 infrastructure modules are used, the customer must provide an additional stress free bearing to absorb occurring mass and acceleration forces. Appropriate threaded bores are available in the IF32 infrastructure modules, cover plate, adaptor plate and pressure relief module. The user also needs to analyze the respective installation position and the application. Information for for special applications is available on request. request.

46

Example configurations. Example configuration VT1 The following example shows the configuration of a control plate on VT1 basis for a 40 t wheel loader. Stack Designation

0

VT1 base plate

1


Position control plate

Function

IF32 mo module

Size of Spoo Sp ooll typ type e valve section

Wor orkk por portt relief valves

Intermediate plate


0.1.0

Lifting gear

-

VW30-01 CF25

A10

PRV/MUV

-

-


Bucket

VW30-01 CF25

A10

PRV/MUV

-

-

1.2.0

-

-

-

-

-

-

End plate

Pressure relief module

-

-

-

-

-

1.1.0

Stack 1

Stack 0 1.1.0

0.1.0

H

W The illustration above does not show depth D which represents the extension vertical to the drawing level. The external dimensions of the configura configuration tion result from adding as specified in chapter <>: Designation

Width W [mm]

VT1 base plate

120

IF32 infrastructure module work port-mounted section

120

IF32 relief module

70 Total wi width

310

Designation

Height H [mm]

VT1 base plate

110

CF25 subplate mounted valve size30

192 Total height

302

The position of the hydraulic ports is evident from the installation drawings of the individual components.

47

Example configurations. Example configuration VT4 Stack 2

Stack 1

Stack 0 0.3.0

1.2.0

Stack 3

0.2.0

0.1.0

1.1.0

2.1.0

3.1.0

H

W

The illustration above does not show depth D which represents the extension vertical to the drawing level. The external dimensions of the configura configuration tion result from adding as specified in chapter <>: Designation

Width W [mm]

VT4 base plate

344

IF32 infrastructure module work port-mounted section

120

IF3 F32 2 in infr fraast stru ruct ctur ure e mo modu dule le for sub ubp pla latte mou ount nted ed se sect ctio ion n wi witth pum ump p por ortt

120 12 0

IF32 infrastructure module adaptor plate IF32-SW18

60

SW18 sandwich valve

75

SW18 cover plate

26

SW18 intermediate plate LS disabled

40

SW18 sandwich valve

75

SW18 cover plate

26 Total wi width

Designation

886 Height H [mm]

VT4 base plate + make-up module

219

CF25 intermediate plate for regeneration

35

CF25 subplate mounted valve size30

192 Total height

446

The position of the hydraulic ports is designated designated on the installation drawings of the individual components. components.

48

Example configurations. Example configuration VT4 The following example shows the configuration of a control plate on VT4 basis for a 24 t mobile excavator. Stack Designation

0

VT4 base plate

+ make-up module 1


Position control plate

Function

IF32 module

0.1.0

Boom

-

0.2.0

Dipper stick

0.3.0

Spoo Sp ooll ty type pe

Wor orkk po port rt relief valves

Intermediate plate


VW30-01 CF25

A10

PRV/MUV

Regeneration

-

-

VW30-01 CF25

A10

PRV/MUV

-

-

Bucket

-

VW25-01 CF25

A10

PRV/MUV

LS disabled

-

Option


VW25-01 CF25

A10

PRV/MUV

-

Tank bypass 1.0

Swing

for subplate mounted valve with pump port

VW18-01 CF25

S10

MUV

-

-

1.3.0

-

-

-

-

-

-

End plate

Adaptor plate IF32/SW18

-

-

-

-

-

-

VW18S- 01

S20

MUV

-

-

2.2.0

-

-

-

-

-

-

2.3.0

-

-

-

-

-

-

End plate

Cover plate

-

-

-

-

-

-

VW18S- 01

A10

PRV/MUV

LS disabled

-

3.2.0

-

-

-

-

-

-

3.3.0

-

-

-

-

-

-

End plate

Cover plate

-

-

-

-

-

1.1.0

1.2.0

2

3



2.1.0

3.1.0

Propel

Outriggers

Size of valve section

49

External dimensions and masses The external dimensions and the weight of the configured control plate can be estimated by adding the values of the components in the table. The data in the corresponding installation drawing are binding.

Component

Design

W [mm]

H [mm]

T [mm]

M [kg]

VT4 base plate, hydraulic piloting

sole base plate

344

114.5

314

70.8

with make-up modul

344

219

314

82.4

sole base plate

120

110

220

18.5

with cover plate

180

110

220

28.4

with relief module

190

184

288

31.1

with make-up modul, without cover plate, without relief module

229

110

220

30.1

Make up module

sole*

109

98

175

11.6

CF25 subplate mounted valve

size 18

102

155

395

18.4


size 25

104

125

436

18.2


size 30

102

192

428

27.2

CF25 intermediate plate

LS disabled

102

40

218

5.3

CF25 intermediate plate

for regeneration

102

35

210

4.9

CF25 cover plate

cover plate

102

38

210

6.0

75

132

395

15.5

VT1 base plate, hydraulic piloting

SW18 sandwich valve SW18 intermediate valve

LS disabled

40

92

181

4.7

SW18 cover plate

cover plate

26

95

182

3.4

Tank bypass plate (work port-mounted plate)

AP 0.75“

70

61

227.5

4.5

Tank bypass plate (work port-mounted plate)

AP 1.00“

80

57

237.5

5.2

IF32 infrastructure module

for subplate mounted section with pump port

120

110

220

18.6


for subplate mounted section

120

110

220

19


with relief module

70

184

288

12.6


adaptor plate IF32-SW18

60

104

218

8.1


cover plate

60

104

218

9.9

*) The dimensions of the make-up module are valid for mounting the device to the VT1. The values must be interchanged according according to the different orientation, when mounting the device to the VT4. Compare chapters <> configurations>> for further information.

50

Your Notes.

51

How to reach us. Linde Hydraulics. Sales and service partners. Internet www.linde-hydraulics.com Phone

+49.60 21.99-42 01 +49.60 21.99 - 0 switchboard

Fax

+49.60 21.99-42 02 +49.60 21.99-42 30

Email

[email protected]

Mail

Linde Material Handling GmbH Linde Hydraulics Grossostheimer Str. 198 63741 Aschaffenburg

e . 1 1 / 4 0 . M T V . Y H L

P.O. Box 100136 63701 Aschaffenburg

Linde Hydraulics. Sales companies. (E)

Linde Material Handling Ibérica S.A. Avda. Prat de la Riba, 181, 08780 Palleja (Barcelona), (Barcelona), phone +34.9 36 63 32 32, [email protected]

(F)

Fenwick Linde, Acivité Linde Hydraulique 1 rue du Maréchal de Lattre de Tassigny, 78854 Elancourt Cedex, phone +33.1 30 68 46 47, [email protected]

(GB)

Linde Hydraulics Ltd. 12-13, Eyston Way, Abingdon, Oxfordshire, England OX14 1TR, phone +44.12 35.52 28 28, [email protected]

(I)

Linde Material Handling Italia SPA Via Luguzzone, 21020 Buguggiate (VA), phone +39.03 32.877 111, [email protected] [email protected]

(USA)

Linde Hydraulics Corporation P.O. Box 82, 5089 Western Reserve Road, Canfield Ohio 44 406, phone +1.330.5 33 68 01, [email protected]

(BR)

Linde Hydraulics do Brasil Rua Anhanguera, 1.121, Jd. Piratininga - CEP 06230-110, Osasco SP, phone +55.11.36 04 47 56, [email protected]

(VRC)

Linde (China) Forklift Truck Co. Ltd., Division Hydraulics No. 89 Jinshang Lu, 361009 Xiamen, phone +86.592.55.33 291, [email protected] [email protected]

Turning Power into Motion.

52

Linde Hydraulics, Grossostheimer Str. 198, 63741 Aschaffenburg Telefon +49.60 21.99-42 01, Telefax +49.60 21.99-42 02, www.linde-hydraulics.com

Datasheet VT Modular En

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