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Rexroth SY.DFE. Electrohydraulic Control Systemfor Pressure and Flow

Dynamic, energy-saving, high-precision

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Always an Optimum ofPressure, Pump flow and Power

The Rexroth SY.DFE. is an electro-

hydraulic closed-loop control

system based on a variable

displacement axial piston pump,

for controlling pressure, flow and

power without throttling losses in

the power train.

System benefits

Pressure/owcontrolwith

highdynamics

Energy-savingthroughmini-

mizationofthrottlinglosses

Extremelystraightforward

systemstructuredueto

reductioninthenumberof

components

High-precision,innitely

variablecontrolthrough

closedelectroniccontrol

loop

Fields of application

Plasticsinjectionmolding

machines

Variouspresses

Rubberinjectionpresses

Diecastingmachines

Oilsupplyfortestbenches

Andmanymore

Flow

command

value Power

command value

Pressure command value 100%

100%

P

Q

SYDZ preload valve

with integrated pressure

limiting feature

HM16 pressure

transducer

VT-SWA swivel

angle transducer

with integrated

electronics

VT-DFPE

pilot valve

with integrated

electronics

A10VSO axialpiston pump

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The SY(H)DFE closed-loop

control system, with nominal

pump volumes ranging from 18

to 355 cm3, permits a uniform

closed-loop control concept for

a wide range of machine sizes.

The electronic variants avail-

able allow it to be used in many

different types of machines.

A Modular System with Pump and ElectronicVariants for a Range of Applications

Standard series

SYDFE.-2X

Nominalpressure280bar

Withpreloadvalvecontrollable

from1bar

18to140cm3

All SY(H)DFE controlsystems are factory-tested,

pre-assembled and readyto use.

New pump series

SYDFE.-3X

Nominalpressure280bar

Withpreloadvalvecontrollable

from1bar

71to140cm3

Reducednoiseemission

Improvedefciency

OptionalPCVensuresevenlower

pressurepulses

Increasedreliability

GreaterexibilitythankstoU99universalthroughdrive

High pressure series

SY(H)DFE.-1X

Nominalpressure350bar

125to355cm3

AlsoavailableforHFCwithout

limitationofpressureorspeed

GreaterexibilitythankstoU99universalthrough-drive

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SY(H)DFEE:

Internal analog electronics

Inordertosimplifyassemblyandcommissioningevenmore,

theclosed-loopcontrolsystem

ofthiselectronicvariantisinte-

gratedinthepilotvalve.Settings

suchasthevalvezeropoint

aredoneinthefactory.Using

shortcablesreducesthecostof

theEMCmeasuresrequired.

Theclosed-loopcontrolsystem

isdesignedforuseatambient

temperaturesofupto60C.

SYDFE1:

External analog electronics

Theelectroniccardforcon-

trollingtheSYDFE1isinstalled

insideacontrolcabinet.Access-

ibilityisthereforeverygood

whencommissioningandser-

vicing,andtheclosed-loop

controlsystemcanbeusedat

ambienttemperaturesofupto

70Caswellasimmersedinoil.

SY(H)DFEn:

Internal digital electronics,

variable speed

Alowerspeedinthepart-load

rangereducesenergylossesand

noiseemissionsatthepump

andelectricmotor.Theuseof

standardfrequencyconverters

optimizestheprice-performance

ratio.Emergencyoperation

withoutfrequencyconvertersis

alsopossible,asisretrotting.

Identicalmechanicalinterfaces

permitreplacementofSYDFEEandSYDFECwithSYDFEn.

Electric

Drives and

Controls

Hydraulics

Linear

Motion and

Assembly

Technologies

Pneumatics

Service

The Drive & Control Company

Rexroth is unique. No other brand

on the world market can offer its

customers the full range of drive

and control technologies, both

on a specialized and integrated

basis. This is one of the reasons

why we are best-in-class on a

worldwide basis when it comes

to furnishing technological

driving, controlling and motion

solutions; a standard to be con-

stantly confirmed by mastering

new challenges. In more than 80

countries around the world, with

about 33,000 employees. This

is possible thanks to an infra-

structure purposefully designed

with partnership and customer

proximity in mind.

As a company Bosch Rexroth

looks back on more than 200

years of tradition. As a wholly

owned subsidiary of Robert

Bosch GmbH, we are part of a

globally operating technology

group. All this is both our drive

and our commitment. And it isunique just like Bosch Rexroth.

The Drive & Control Company.

SY(H)DFEC:

Internal digital electronics

Inadditiontotheadvantages

oftheSY(H)DFEEthedigital

electronicvariantalsopermits

eveneasiercommissioningand

servicing,asthiscontrolsystem

offersautomaticcalibrationand

softwareforparameterization

withtheScopefunction.Signal

exchangewiththehigher-level

controlsystemiseffectedvia

analogandCANopeninterfaces.

TheSY(H)DFEisdesignedfor

useatambienttemperaturesof

upto50C.

User interface Win-PEDfor SY(H)DFEC andSY(H)DFEn

More information and data sheets

can be found on our homepage

http://www.boschrexroth.de/sydfe

or send us an e-mail tosupport.sydfe@boschrexroth.de

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Easy Assembly and Commissioning,Optimum Benefit

For each infeed/press operation:

Simultaneousinputofmaximum

pressureandowrate/speed

Follow-upofspeedproleatlow

infeedpressure

Automatictransitiontopressurecon-

trolwhensystempressureincreases

Pressurecommandvalueis

maintainedintheeventofsmall

swivelangle

duringthepressingoperation

Straightforward system structure

Inmanyapplicationsanadditional

directionalcontrolvalvewillsufce

forselectingthedirectionoftheoil

ow.Itisthuspossibletosetupan

energy-savinghydraulicdriveusing

fewcomponents.

Thepumpcandeliverthehydrau-

licuidinbothdirectionswith

sustainedpressureattheP-port.

Theregenerativeversionisde-

signedforcontinuousoperation

inthisoperatingmode.Aprell

valveisrequiredheretopreventcavitation.

System Dynamics

Thankstoitsgooddynamic

propertiestheclosed-loopcon-

trolsystemissuitableforusein

manydifferentapplications.

Thecontroltimesforchanges

inowrateandpressurearecom-

parablewithpilotedproportionalvalveswithpositionfeedback.

a command value

Actual value a

Flow control Pressure control

a

p command value

Actual value p

Flow control Pressure control

p

0..100 %SYDFE..71, p = 50 bar 70 ms (T

95)

35 ms (T95

)100..0 %

4WRZ 16, p = 50 bar 0..100 %Proportional directional valves, 105 ms (T

95)

pilot operated without electrical 75 ms (T95

)position feedback 100..0 %

4WRKE 16, p = 50 bar 0..100 %Proportional directional 65 ms (T

95)

valves, pilot operated with 30 ms (T95)electrical position feedback 100..0 %

Dynamics in comparison with proportional valves

p = pressure a = swivel angle flow~~

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Germany

Bosch Rexroth AGVertrieb DeutschlandRegion NordWalsroder Strae 9330853 Langenhagen, GermanyPhone: +49(0)511/726657-0Fax: +49(0)511/726657-90

Bosch Rexroth AGVertrieb DeutschlandRegion Ost

Walter-Khn-Strae 4 d04356 Leipzig, GermanyPhone: +49(0)341/2561-0Fax: +49(0)341/2561-111

Bosch Rexroth AGVertrieb DeutschlandRegion WestBorsigstrae 1540880 Ratingen, GermanyPhone: +49(0)2102/409-0Fax: +49(0)2102/409-400

Bosch Rexroth AGVertrieb DeutschlandRegion MitteWaldecker Strae 1364546 Mrfelden-Walldorf, Germany

Phone: +49(0)6105/702-3Fax: +49(0)6105/702-444

Bosch Rexroth AGVertrieb DeutschlandRegion SdwestSiemensstrae 170736 Fellbach, GermanyPhone: +49(0)711/51046-0Fax: +49(0)711/51046-199

Bosch Rexroth AGVertrieb DeutschlandRegion Sd

Landshuter Allee 81080637 Mnchen, GermanyPhone: +49(0)89/12714-0Fax: +49(0)89/12714-291

Austria

Bosch Rexroth GmbHIndustriepark 184061 Pasching, AustriaPhone: +43(0)7221/605-0Fax: +43(0)7221/605-20

Switzerland

Bosch Rexroth Schweiz AGHemrietstrae 28863 Buttikon, SwitzerlandPhone: +41(0)55/4646-111Fax: +41(0)55/4646-222

Printed in GermanyRE 09544/04.09

substitutes RE 09544/11.03

Bosch Rexroth AGIndustrial HydraulicsZum Eisengieer 197816 Lohr, GermanyPhone: +49(0)9352/18-0Fax: +49(0)9352/18-3241info.bri@boschrexroth.de

www.boschrexroth.com