 RE66176/2023-05-22,BoschRexrothAG

Contents

Features

▶ Load-sensingsystem

▶ Loadpressureindependentowcontrol

▶ Compactdesign

▶ Typeofactuation

– Electro-hydraulicwithon-boardelectronics

▶ Flow

– Loadpressure-compensated

– Highrepetitionaccuracy

– Lowhysteresis

Fields of application

▶ Tractors

▶ Agriculturalmachinery

▶ Attachments

▶ Series2X

▶ Maximumworkingpressure250bar

▶ Maximumow80l/min

Load-sensing directional valves

in sandwich plate design

SB11-EHS4

RE66176/2023-05-22

Replaces:2022-04-05

CANbusinthetractor 2

Functionaldescription 3

Modularsystem 4

Technicaldata 5

Qualicationtesting(electric,EMC) 7

Hydraulicfunctions 9

Electronicfunctions 14

Dimensions 16

Installationposition 18

Relateddocumentation 19

Abbreviations 19

Spareparts 19

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

CANbusinthetractor

CAN bus in the tractor

Withtheincreaseinelectronicsintheeldofagricultural

tractors,theControllerAreaNetwork(CAN)developedby

Boschhasbecomeanestablishedmeansofdataexchange

amongtheindividualdevices.

Thisserialdatabusconnectsdeviceswithequalrightsand

coordinatesthedataexchangeintheformofdigitalCAN

messages.

CAN features of the EHS actuating unit

▶ Self-diagnosticsandautomaticrepeattransmissionin

theeventofdamagedorincompletemessages

▶ Linkingandthussimultaneouscommunicationpossible

amongseveralsensors,controlunitsanddisplayunits

▶ Worldwiderecognizedstandard,ISO11898and

11519-2aswellasSAEJ1939

▶ Lesscablingmakesforreducedinstallationspaceand

lowercosts,andreducesriskfordamages

▶ Highfaulttoleranceandhighsecurityoftheinterface

▶ Diagnosticsthroughoutputoferrorcodes

▶ Barrier-freediagnosticaccessviaUDS

(UniedDiagnosticServices)accordingtoISO14229

▶ CANFDtolerant

SRC

CAN

10 11

t [ms]

Sig

[V]

3 4

1 Controlpanel

2 Operatingkeys

3 FrontEHR

4 RearEHR

5 Electroniccontrolunits

6 Instrumentcluster

7 Controlblock

8 CANsignal

9 CANmessage

10 ID

11 Signal

 RE66176/2023-05-22,BoschRexrothAG

3 Directionalvalves | SB11-EHS4

 Functionaldescription

Functional description

SB11-EHS4arepilot-operated,electro-hydraulically

actuateddirectionalvalveswithfourspoolpositions

andon-boardelectronics.

Thecontrolspooliscontrolledviaa4/3directional

pilotcontrolvalvewhichpressurizesthechambersfor

deectionofthecontrolspool.Thecontrolspoolposition

isguidedbackbymeansofapositiontransduceronthe

controlelectronics.Usingthecurrentofthepilotcontrol

valve,theelectronicsthenregulatethepositionofthe

controlspoolasafunctionofthesetpointvalueofthe

spooldeection.Inthisway,theowrequiredtooperate

theconnectedequipmentissetattheconsumerports.

Theindividualpressurecompensator(IPC)controls

aconstantpressuredifferenceviatheintakecontroledge

ofthecontrolspool,suchthatowcontrolindependentof

loadpressureisachievedovertheentireadjustingrange

(loadcompensation),eveninparalleloperation.

ThedirectionalvalveSB11-EHS4isequippedwith

acheckvalveinconsumerportB.

Themechanicallyactuatedisolatorvalveactsasacheck

valveintheinlet.IntheSB11-EHS4,thecheckvalve

functionfromtheconsumerportAisimplemented

viathethirdswitchingpositionofthe2/3-wayIPC.

ThispreventsreturnowinPintheeventofundersupply

inparalleloperation.

Features

▶ Double-actingwithfourswitchingpositions(Neutral,

Lifting,Lowering,Float)

▶ MechanicallyactuatedcheckvalveinconsumerportB

▶ CheckvalveopenedinFloatwithoutloadpressure

▶ 2/3-wayindividualpressurecompensatorininlet

▶ Optionalangesurfaceforcustomer-specic

couplinghousing

▶ Optionalthermalpressurereliefvalveintegrated

inthecheckvalve

▼ SB11-EHS4 with one check valve in portB

1237810 2 44

569

1 Checkvalve

2 Consumerports

3 Returnspring

4 Chamber

5 Individualpressurecompensator(IPC)

6 Controlspool

7 Circuitboard

8 Positiontransducer

9 Pilotcontrolvalve

10 Electricalconnectionofthepilotvalve(CANcontrol)

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Modularsystem

Modular system

Theelectro-hydraulicdirectionalvalvesSB11-EHS4

arepartoftheSB11moduleandcanbecombined

optimallywithhitchcontrolvalvesEHR11-EHS4for

therelevantapplicationtoformcontrolblocks.

Forfurtherinformation,seedatasheet66177:

ControlblockSB11-EHS.

Thevalvesectionsareavailableintheversionsstandard

valve(SVR)withangesurfacesonbothsidesaswellas

endvalve(EVR)withoneangesurface.

▼ End valve (EVR) and standard valve (SVR)

SVREVR

Anendvalve(EVR)canbeusedinsteadofaseparate

endplate(withouthydraulicfunction).

Eachvalvesectionnotiesitsloadpressuretothevalve

thatfollowsviatheLSchannel.Itsshuttlevalvecompares

thetwoloadpressuresandsignalsthehigheroneinthe

directionoftheconnectingplate.Inthisway,thehighest

loadpressureofallvalvesectionsissignaledtothe

variabledisplacementpumpviatheLSoutputofthe

controlblock.ThedefaultsignalingdirectionoftheLS

signalis"right".

▼ Block conguration SB11-EHS4 with connecting plate (AP),

standard valves (SVR) and end valve (EVR)

APSVREVR

SVR

LSsignal

tothepump

▼ LS signaling direction "right"

Ports

P Pumpport

A, B Consumerport

X Pilotoilsupply

Rx Pilotoilreturn

Y LSsignal

R Returnowreservoir

Notice

ThePandRchannelsofEVRarepluggedwith

threadedplugsontheunmachinedvalveside.

Theseportsmustnotbeopenedand/orusedforthe

connectionofadditionalfunctions!

 RE66176/2023-05-22,BoschRexrothAG

5 Directionalvalves | SB11-EHS4

 Technicaldata

Technical data

General

Weight kg 4.5

Installationposition Seepage18

Lineconnections Seepage18

Ambienttemperaturerange

°C –35…+80

Hydraulic

Nominalpressureatport P p

nom

bar 210

Max.workingpressureatport P p

max

bar 250

A, B p

max

bar 250

R, Rx p

max

bar 20

X p

max

bar 50

Neutralcirculationpressurefor

openingtheIPCfromthe

checkfunction

P→R

bar 2.8atq

Vnom

=60l/min

6.2atq

Vnom

=80l/min

Flow

port

P→A,B q

vnom

l/min 60,80

A, B→R q

vmax

l/min 142

Leakage A→R q

ml/min ≤60

without

checkvalveinA

B→R q

ml/min ≤2withcheckvalveinB

Crackingpressureofthermalpressurereliefvalve(optional)

bar 311±69

Pilotoilpressure Referencedtoreturn

owpressure

bar 17…22

Pilotoilowperdirectional

valve(typical)

Neutral l/min 0.25

Controlposition

Lifting/Lowering

l/min 0.6

Momentaryatmax.

actuatingspeed

l/min 3.5

Hydraulicuid

Mineraloil(HL,HLP)accordingtoDIN51524,

seedatasheet90220.Otherhydraulicuidsonrequest,

e.g.environmentallyacceptableuidsperISO15380

asspeciedindatasheet90221.

Hydraulicuid

temperaturerange

Maximum

°C −35…+110

Recommended

°C +35…+80

Viscosityrange Maximum

mm²/s 7…8000

Recommended

mm²/s 20…100

Maximumadmissibledegreeofcontaminationofthehydraulicuid

CleanlinesslevelperISO4406(c)

Level20/18/15,werecommendalterwithaminimum

retentionrateofβ

10

≥75

Notice

▶ Forapplicationsoutsidethesevalues,

pleaseconsultus!

▶ Thetechnicaldataweredeterminedwith

aviscosityrangeofν=30mm

/sand

atemperatureofϑ=50°C.

Notice

▶ Thestatedcheckvalveleakagevaluesreferto

apressureofp=125bar.

▶ Inthecaseofexternalpilotoilsupply,mixingofthe

pilotoilcircuitwiththeoperatingoilcircuitcannotbe

avoidedfordesignreasons.

1) Anyoperationoutsidetherecommendedrangesmayaffect

servicelifeandfunction.

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Technicaldata

Electro-hydraulic

Standard CANcontrol

Relativedutycycle(ED) 100%EDto+110°C

Inputsignal CAN,physicallayeraccordingtoISO11898"HighSpeed"

125

kBd,250kBd(default),500kBd,1000kBd

Supplyvoltage

Vehicleelectricalsystem

accordingtoISO16750-2:CodeD

V 12

Electricalpowerconsumption IfU

Bat

=14V

Typical max.

InNeutralposition W 1.2 1.5

Duringmax.actuatingspeed W – 20

Inposition1or2 W 4.0 5.0

InFloatmode W 14 20

Voltagerange

Normalvoltagesupplyrange V 10.5…16

Undervoltagemode:

Restrictions

infunctionanddynamics

V 9.5…10.5

Verylowvoltagemode:

Only

CANcommunicationisguaranteed

V 6…9.5

Nofunction,µCisreset,outputsareoff V <6

Overvoltageresistance(supplyvoltage) V 26(duration5min)

Reversepolarityprotection(testvoltage) V 18(duration1min)

Shortcircuitresistance Against16V,againstground,andbetweentheindividual

inputsandoutputs,duration5min

Systemstart-uptime Firstloginmessage→

ready

forcommunication:

ms 500

Actuatingtimefor100%

deection

Seecharacteristiccurveonpage12

Actuatingtime/dynamics(measuredat50°C,30mm

/s,VG46)

Stepfunction

(incl.

deadtime)

0→1/2 ms 70

0→F ms 100

Hysteresisrelativetoow Typicallyapprox.1%ofq

nom

(in

owrangeupto80%ofq

nom

)

Sinusvibrationtest DINEN60068-2-6(sinustesting)

Frequency Hz 10…2000,acceleration:10g

Duration/axis Hrs 8

Broadbandnoisetest DINEN60068-2-64,5...2000Hz,a

eff

86.9m/s

Shocktest DINEN60068-2-27,a=500m/s

,11ms,60cycles

DINEN

60068-2-29,a=400m/s

,6ms,300cycles

Conformitywith EMCdirective2014/30/EU

withCEmarking

Appliedstandards:

ENISO14982:2009

Connectorversion AMPSuperseal,4-pin

Pinassignment

Pin1=ground

Pin2=CANhigh

Pin3=CANlow

Pin4=U

Bat

Pin 2

Pin 1

Pin 3

Pin 4

1) Detailedinformationonrequest

2) Seecharacteristiccurveonpage12

 RE66176/2023-05-22,BoschRexrothAG

7 Directionalvalves | SB11-EHS4

 Qualicationtesting(electric,EMC)

Electro-hydraulic

Typeofprotection IP66,IP67,IP69K

(with

installedandlockedplug-inconnector)

Required components(notincludedinthescopeofdelivery) Material no. TYCO Quantity

AMPSupersealconnector 282088-1 1

ContactMINI-MICforconductorcrosssection0.75…1.5mm²

andinsulationdiameter1.7…2.4mm

282110-1 4

Insulationdiameteroftheindividualsealsfrom1.7...2.4mm 281934-2 4

Recommendedcableprotection 493581-1 1

Generaldata Tycoproductspecication108-20090

Prescribedlinetype FLR

– Selectanappropriateconductorcrosssectionforcontact,individualsealandpowerconsumption.

– Thewiringharnessmustbemechanicallysupportedintheinstallationarea(freelength<150mm)ofthevalve.

In-phase

energizationofthevalvetosupportthewiringharness.

Notice

TheOBEisdesignedforaservicelifeof10years

operatingtimeand5yearsstoragetime(withinthe

recommendedtemperaturerange).Afterthistime,

theprobabilityoferrormayincrease.

Theoperatingtimeisnotmonitoredbythe

on-boardelectronicsitself.Themachinemanufacturer

isresponsibleformonitoringanddeningsuitable

measures(e.g.testormaintenanceintervals).

Qualication testing (electric, EMC)

Susceptibility EMC tests

ISO11452-2:2019: Absorber-linedshieldedenclosuremethod

complieswithUNECE10Rev.6

Supplyvoltage: 13.5V

CW200MHz…3GHz,100V/m

AM200MHz…800MHz,150V/m

PM800MHz…3GHz,150V/m

ISO11452-4:2011: BCItestmethodcomplieswithUNECE10

Rev.6

Supplyvoltage: 13.5V

1…20MHz: 200mA

20…400MHz: 200mA

Method: Openloop,commonmode

(complete

harnessincurrentprobe)

Emission EMC test

UNECE10Rev.5: Broadbandemittedinterference;

chapter

6.5,appendix6

Supplyvoltage: 13.5V

UNECE10Rev.5: Narrowbandemittedinterference

chapter6.5,appendix6

Supplyvoltage: 13.5V

CISPR25:2008: Radiatedemissionchapter6.4.4

Supplyvoltage: 13.5V

Class3: 80MHzand212MHz,

other

frequenciesclass4

CISPR25:2008: Conductedemissionchapter6.2.3,

table5

and6

Supplyvoltage: 13.5V

Class3: 1MHzand69…76MHz,

other

frequenciesclass4

UNECE10Rev.6,ISO7637-2:2011,ISO7637-2:2004:

Voltage

transientemissiontest

Supplyvoltage: 13.5V

LevelIII

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Qualicationtesting(electric,EMC)

Electrostatic discharge (ESD) tests

ISO10605:2008

Supplyvoltage:

Testvoltage:

Operatingstate:

Directcontactdischarge

13.5V

TableC.1,category1,L1toL4

(max.

±8kV)

C(active)

ISO10605:2008:

Supplyvoltage:

Testvoltage:

Operatingstate:

Directairdischarge

13.5V

TableC.2,category1,L1toL4

(max.

±15kV)

C(active)

ISO10605:2008:

Testvoltage:

Operatingstate:

Contactdischarge,notpowered

TableC.1,category1,L1toL4

(max.

±8kV)

Aafterreset(passive)

ISO10605:2008:

Testvoltage:

Operatingstate:

Airdischarge,notpowered

TableC.2,category1,L1toL4

(max.

±15kV)

Aafterreset(passive)

Transient tests

ISO7637-2:2011:

Supplyvoltage:

Operatingstate:

Testpulse1

13.5V

+600V

C(active)

ISO7637-2:2011:

Supplyvoltage:

:

Operatingstate:

Testpulse2a

13.5V

+200V

A(active)

ISO7637-2:2011:

Supplyvoltage:

:

Operatingstate:

Testpulse2b

13.5V

−450V

A(active)

ISO7637-2:2011:

Supplyvoltage:

:

Operatingstate:

Testpulse3a

13.5V

−450V

A(active)

ISO7637-2:2011:

Supplyvoltage:

:

Operatingstate:

Testpulse3b

13.5V

+200V

A(active)

ISO7637-2:2011

(ISO16750-2:2012):

Supplyvoltage:

LevelIVU

:

Operatingstate:

Startingprole(pulse4)

12V

−7V

C(active)

ISO7637-2:2004:

Supplyvoltage:

LevelXU

:

Operatingstate:

Startingprole(pulse4)

12V

−7V

C(active)

Transient tests

ISO16750-2:2012:

Supplyvoltage:

:

Operatingstate:

Table5(pulse5a)

13.5V

+202V

8Ω

350ms

C(active)

ISO16750-2:2012:

Supplyvoltage:

:

Operatingstate:

Table6(pulse5b)

13.5V

+50V

1Ω

350ms

C(active)

ISO7637-2:2016:

Supplyvoltage:

MethodCCC,LevelIV:

:

Operatingstate:

Fastpulsesaandb

13.5V

−110V/+75V

A(active)

ISO7637-3:2016:

Supplyvoltage:

MethodICC,LevelIV:

:

Operatingstate:

Slowpulsespositiveandnegative

13.5V

−6V/+6V

A(active)

General electrical tests

ISO16750-2:2012:

Smax

:

Duration:

Operatingstate:

Shortcircuitofsignals,chapter4.10.2

18V

5min

ISO16750-2:2012:

sup

:

Operatingstate:

Overvoltage,chapter4.3.2

18.5V

ISO16750-2:2012:

Case2,U

:

Operatingstate:

Reversedpolarity,chapter4.7.2

−18V

Aafterreset

 RE66176/2023-05-22,BoschRexrothAG

9 Directionalvalves | SB11-EHS4

 Hydraulicfunctions

Hydraulic functions

Example congurations SB11-EHS4

Type Features

F 2

2.F

0 1

RxXPR Y

– Standardvalve(SVR)

– CheckvalveinB

– Withoutthermalpressurereliefvalve

F 2

2.F

0 1

RxXPR Y

– Endvalve(EVR)

– CheckvalveinB

– Withoutthermalpressurereliefvalve

0=Neutral

1=Lifting

2=Lowering

F =Float

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Hydraulicfunctions

Switching capacity limits

Themaximumswitchablereturnowisdependent

ontheloadpressurelevel.Theowforcesatthe

spoolhavealimitingeffecthere.

Thevaluesrepresentedrefertothepilotpressure17bar.

▼ Characteristic curve return ows, switching capacity limits

Flowq

[l/min]

Δp[bar]

96; 185

142; 50

142; 0

100

150

200

250

0 20 40 60 80 120 140100 160

0; 200

Flow resolution

Thecharacteristiccurvesapplyforstandardversions

(owedgecomparison).

Othertolerancescanoccurforspecialversionsor

specialspoolversions.

▼ Characteristic curve for ow resolution

0.5

1.0

1.5

2.0

2.5

0 20 40 60 80 100

Flowq

[l/min]

Flowresolution[l/min]

1 q

nom

=60l/min(typical)

2 q

nom

=60l/min(maximum)

3 q

nom

=80l/min(typical)

4 q

nom

=80l/min(maximum)

Forreturnowedgecomparison,thetolerancesonlyapply

above10%ofthenominalow(greatertolerancesareto

beexpectedbelowthisvalue).

Hysteresis

Withrespecttotheow:

▶ Typicallyapprox.1%ofq

nom

(inowrangeupto80%ofq

nom

)

▶ Maximum2%ofq

nom

Temperature drift of ow

Thetemperaturedependenceoftheowiscompensated

electronicallyinthetemperaturerange30°Cto90°C.

Pressure drift of ow

Pressuredriftoftheow(pressureincreasedueto

paralleloperation)iscompensatedbytheindividual

pressurecompensator.

 RE66176/2023-05-22,BoschRexrothAG

11 Directionalvalves | SB11-EHS4

 Hydraulicfunctions

Flow resistances (typical values)

SB11-EHS4, 1 check valve

▼ Position 1 (Lifting)

Flowq

[l/min]

PressuredropΔp[bar]

4.5

7.4

6.9

10.6

20.8

20 40 60 80 100 120 140 160

Y → B

A → R

▼ Position 2 (Lowering)

Flowq

[l/min]

PressuredropΔp[bar]

20 40 60 80 100 120 140 160

3.4

6.1

14.0

21.5

42.5

Y → A

B → R

▼ Position F (Float)

Flowq

[l/min]

PressuredropΔp[bar]

20 40 60 80 100 120 140 160

14.2

28.2

9.3

14.4

28.6

A → R

B → R

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Hydraulicfunctions

Pilot pressure

=17to22bar

(settingpointforcontrolow0.8to1.2l/min)

Thepilotpressureinaccordancewiththediagrammustbe

availablealonetotheEHSvalves,sincethefullvalve

performanceisotherwisenotguaranteed.

▼ Characteristic curve for pilot pressure

0 2 4 6 1081 3 5 7 9

maximum

minimum

Setting

Controlow[l/min]

Pilotpressure[bar]

Pilot oil cleanliness

Specialattentionmustbepaidtothepurityoftheoilfor

thepilotoilsupply;additionalpilotoilneltersmustbe

usedifnecessary.

Actuating time / dynamics

Basefrequencyinrelationtospoolstrokeapprox.14Hz

forsetpointvaluechangefrom0to100%.

▼ Characteristic curve for step function

Viscosity[mm

/s]

Time[ms]

10 100 1000 10000

5 6

1000

10000

100

1 Actuatingtime:NeutralafterFloat

2 Actuatingtime:NeutralafterLowering

3 Actuatingtime:NeutralafterLifting

4 Delaytime:NeutralafterFloat

5 Delaytime:NeutralafterLowering

6 Delaytime:NeutralafterLifting

Thermal pressure relief valve

Optionalpressurelimitationfunctionintegrated

inthecheckvalve,whichpreventsanimpermissible

highpressurebuildingupbetweenthevalveand

thequickcouplersinstalled.

Suchpressurepeakscanoccurwhentheoilvolume

enclosedheatsup,forexample.Thepressureisrelieved

internallyinthevalve.

▼ Symbol T-PRV

2.F

ConsumerportB

 RE66176/2023-05-22,BoschRexrothAG

13 Directionalvalves | SB11-EHS4

 Hydraulicfunctions

Internal leakage

Leakage in consumer port SB11-EHS4 with 1 check valve

B→Rinposition0: 2ml/min

A→Rinposition0: 60ml/min(standard)

A→Rinposition2:

(Check

functionIPC)

150ml/min(typ.)

300ml/min(max.)

Additionalleakagevaluesonrequest.

Highvaluescanoccurforspecicspoolversions.

Notice

▶ Checkvalveleakagevaluesmeasuredwith

p=125bar,ν=30mm

/s,ϑ=50°C,t

waitingtime

=15s,

measuringtime

=60s.

▶ LeakageP→Rmeasuredwithp=200bar.

▼ Typical development of leakage, chronological sequence

of leak at check valve

p [bar]

V [ml]

θ [°C]

q [ml/min]

0.5

1.5

2.5

3.5

100

140

120

0 1 2 3 4 5 6 7 8 9 10

Time[min]

Measuring

time

Leakage[ml/min]

Pressure[bar],temperature[°C]

Pilot oil supply

Thepilotoilsupplyisnotpartofthedirectionalvalvebut

partoftheblockorsystem.

RequiredcontrolowperEHSdirectionalvalve

(applicabletoSB-EHSandEHR-EHS)

▼ Values for aviscosity of 30 mm

/sec:

Typical Maximum

InNeutralposition 250ml/min 460ml/min

InLiftingorLoweringmode

600ml/min 600ml/min

InFloatmode 250ml/min 460ml/min

Duringstepfunction

(LiftingorLoweringmode)

3.5l/min

(Actuatingtimeapprox.

40ms,noramp)

Duringstepfunction

(Floatmode)

4.4l/min

(Actuatingtime

approx.75ms)

Demandpeaksinthepilotoillimitedby

▶ Avoidingsimultaneousconnectionofseveralconsumers

(delaybyactuatingtime+safetydistance)

▶ Programmingintimeramps

Control pressure referencing

Thepilotoilpressurep

mustbereferencedto

thehighestreturnowpressureofallEHSvalves.

xabs.

= p

+p

Rmax

)

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Electronicfunctions

Electronic functions

Notice

▶ Safety-relevantprojectplanninginstructionscanbe

foundinthemanual66157-01-B.

▶ Foranoverviewaswellasadetaileddescriptionof

theerrorcodes,pleaserefertomanual66157-02-B.

General information about CAN control

TheEHSvalvecanbeeasilyactuatedviatheserialCAN

interface.Inthisway,amessagecanbeusedtospecify

theoperatingmodes"Neutral","Lifting","Lowering",

"Float"aswellastheowsetpointvalue.Asecond

messagecanbeusedtosetthecharacteristiccurveform,

thecharacteristiccurveriseandtheramptimesseparately

for"Lifting"and"Lowering".Conversely,thevalvecanuse

theerrorcodetoreportthedetailsofanyfaultsthatoccur

tothesuperordinatecontrolpanel.

Thevalvecanbepermanentlyreprogrammedviathe

diagnosisinterface(CANbaudrateandidentier,

batteryvoltagelimits,valvenumber,etc.).

Characteristic curves for setpoint value generation and

time ramps

Characteristic curve rise

Thecharacteristiccurveriseisusedtoreduce

themodulationofthevalve(LiftingandLowering)

linearlyfrom100%to0%.

Thecharacteristiccurverisecanbeprogrammedinthe

rangefrom1…1000(0.1%…100%):

▶ 0x0000=0.0%ofmax.ow

▶ 0x0001=0.1%ofmax.ow

▶ 0x0002=0.2%ofmax.ow

▶ …

▶ 0x03E8=100.00%ofmax.ow

Thevaluesforthecharacteristiccurveriseare

transmittedinthe"Processdatamessage".

▼ Characteristic curve rise

100

0 10 20 30 40 50 60 70 80 90 100

0x03E8

0x0384

0x0320

0x02BC

0x0258

0x01F4

0x0190

0x012C

0x00C8

0x0096

0x0064

0x0050

0x0032

0x0014

0x0001

Input[%]

Output[%]

Input signal [%]:

Correspondstotheowsetpointvalue

Output signal [%]:

Correspondstotheowatthedirectionalvalve.

Theinputcorrespondstotheowsetpointvalueof

theswitchorjoystick.Theoutputcorrespondstothe

percentageofthemaximumow.Reducingthegradient

reducestheoutputowavailablewiththeswitchor

joystick.Italsoimprovestheowresolutionifhigher

accuracyisrequired.

 RE66176/2023-05-22,BoschRexrothAG

15 Directionalvalves | SB11-EHS4

 Electronicfunctions

Characteristic curve form

Thecharacteristiccurveformcanbeusedtochange

thevalvebehaviorfromlineartohighlyprogressive.

Inthisway,thenecontrolbehaviorofthevalvecanbe

changedwithonesingleoperatingelement(e.g.joystick),

ifrequired.

ForLiftingandLowering,16separatestepscanbe

programmed:

▶ 0hex(linear)toFhex(progressive).

Thevaluesforthecharacteristiccurveformare

transmittedinthe"Processdatamessage".

▼ Characteristic curve form

100

10 20 30 40 50 60 70 80 90 1000

0x0

0xA

0xB

0xC

0xD

0xE

0xF

0x1

0x2

0x3

0x4

0x5

0x6

0x7

0x8

0x9

Input[%]

Output[%]

Input signal [%]:

Correspondstotheowsetpointvalue

Output signal [%]:

Correspondstotheowatthedirectionalvalve.

Theinputcorrespondstotheowsetpointvalue

oftheswitchorjoystick.Theoutputcorresponds

tothepercentageofthemaximumow.

Time ramps

Timerampscanbeusedselectivelytoreducethevalve

dynamics.Theramptimeisthetimerequiredtocomplete

theentirestroke(from0%to100%orfrom100%to0%

LiftingorLowering).

ForLiftingandLowering,4000separatestepscanbe

programmed,eachforincreasinganddecreasingow

setpointvalues:

▶ 0x00=0ms

▶ 0x01=1ms

▶ 0x02=2ms

▶ ...

▶ 0xFA0=4000ms

Thevaluesforthetimerampsaretransmittedinthe

"Processdatamessage".

▼ Time ramps

100

200

400

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3200

3400

3600

3800

4000

0x0001

0x0032

0x0064

0x00C8

0x012C

0x0190

0x01F4

0x0258

0x02BC

0x0320

0x0384

0x03E8

0x04B0

0x05DC

0x07D0

0x0960

0x0AF0

0x0C80

0x0E10

0x0FA0

Time[ms]

Output[%]

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Dimensions

Dimensions [mm]

Dimensions

▼ Standard valve SB11-EHS4

130.4

222.25

206.5±1.5

61.3±1.5

31.4±0.4

92.4±0.4

20±0.4

40±0.3

8±1.5

87.4±0.643±1.5

214.25±1

A B

1 Electro-hydraulicactuation(actuatingunitEHS4,seepage17)

2 Threeholesdrilledthroughformounting

3 ConsumerportsA,BinthreaddesignM18×1.5

4 Nameplate

 RE66176/2023-05-22,BoschRexrothAG

17 Directionalvalves | SB11-EHS4

 Dimensions

▼ Actuating unit EHS4

102.3±1

125

93.7±1.5

-0.20

39.4

+0.15

PIN 4 = U

Bat

PIN 3 = CAN-low

PIN 2 = CAN-high

PIN 1 = Ground

Pinassignment:

AMPSuperseal,4-pin

Thread design of consumer ports Aand B

Version I

▶ DIN3852-1(metricthread)

– Forsealringsealing

Version II (preferred version)

▶ ENISO6149-1(metricthread)

– Nofemalethreadcharacterization

– ForO-ringsealing

Version I Version II

1) Connectorremovaldimension

BoschRexrothAG,RE66176/2023-05-22

SB11-EHS4 |Directionalvalves

Installationposition

Product identication

Thevalvesectionsareidentiedbya26×15mm

adhesivelabelcontainingadatamatrixcode(6×6mm)

whichincludesanencodeduniqueserialnumber.

Forunpaintedproducts,theadhesivelabelsare

protectedbyanadditionalprotectivelm.

FD: XXXXX

XXXXX

MNR: XXXXXXXXXXXX

SN: XXXXXXXXXXXX

CNR: XXXXXXXXXXXX

Made in XXXXXXX

Installation position

SB11-EHS4

−45°

+45°

0°

−45°

+10°

0°

+10°

−45°

+45°

0°

−45°

0°

+10°

−45°

+45°

0°

−45°

0°

−45°

+45°

0°

−45°

+45°

0°

−45°

+45°

0°

−45°

+45°

0°

−45°

+45°

0°

−45°

+45°

1) Permissiblewithrestrictions.Increasedairbleedingrequiredto

ensurefunctionandactuatingtimes.Seeinstructionmanual

66177-B.Pleasecontactus.

 RE66176/2023-05-22,BoschRexrothAG

19 Directionalvalves | SB11-EHS4

 Relateddocumentation