Directional control valve RS 220 zdjecia...Nordhydraulic AB P.O Box 189 (Industrivägen 15) SE-872 24 KRAMFORS Sweden Telephone: Int. +46 612 71 72 00 Telefax: Int. +46 612 71 72 15

Solutions that power your visions Dat

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RS

220

Nordhydraulic ABP.O Box 189 (Industrivägen 15)SE-872 24 KRAMFORSSweden

Telephone: Int. +46 612 71 72 00Telefax: Int. +46 612 71 72 15

E-mail: [email protected]: www.nordhydraulic.se

31-0

2-R

S22

0-03

Directional control valve RS 220

�

RS 2

20

Solutions that power your visions

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RS 220

Make use of the Nordhydraulic expertiseOur skilled and experienced design and application engineers are at your disposal, helping you to specify the valve configuration that meets your application requirements.

With the electric remote controlled valve RS 220 for open centre systems we can offer you a valve concept to match your high demands of controllability and performance.

Key valve featuresRS 220 is a sectional valve designed for system pressu-res up to 350 bar and pump flows up to 90 l/min.

It is available with 1 to 10 working sections per valve assembly.

RS 220 is designed with an open centre for fixed and variable displacement pumps.

It is available with electro-hydraulic or hydraulic proportional remote control, but the valve can also be manually operated.

The electro-hydraulic proportional version in par-ticular offers compact design with internal pilot oil supply, solenoids integrated in the valve body and integral hand levers for manual override/manual operation.

RS 220 can be fully adapted for marine applications.

The valve offers excellent operating characteristics because of the specially designed spools for different applications.

Low and uniform spool forces are the result of careful balancing of the flow forces.

Q-function The flow control (Q-function) of the inlet section by-passes the major part of the pump flow to tank when the system is idling, thereby greatly reducing heat generation. But it also gives access to the full pump flow when the services are operated and provide improved operating characteristics.

ApplicationsThe RS 220 is ideal for applications where you need excellent control characteristics such as cranes, sky-lifts, excavators, telescopic load handlers, skid-loaders, wheel loaders etc.

Remote controlThe RS 220 is designed with an integrated pilot supply system in order to achieve an easy installation and

Data sheetThisdatasheetpresentsaselectionofstandardcom-ponentsandhowtospecifytheseinavalveassemblyaccordingtoyourapplicationrequirements.ForfurtherinformationonRS��0andavailablecomponents,pleasecontactNordhydraulic.

a reliable remote control function. It is also possible (and in some cases to prefer) to supply the pilot system externally.

Further RS 220 properties and possibilities• A wide choice of spools and spool controls for dif-ferent flow combinations and for several applications and systems.

• A full range of service port valves.

• Possibility of high pressure carry-over.

• Electrical unloading.

• Manual versions easily convertible to remote control.

� � �

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Table of contentsTechnical data page 4Dimensions, weight page 5Electrical unloading valve page 5Inlet sections page 6 - 7Main relief function page 6Working sections page 8 - 9Solenoid valves, load check valve page 9 Outlet sections page 10 - 11Pilot pressure valve page 11Pressure reducing valve page 11Spool controls page 12 Lever mechanism page 13Spools page 13Service port valves page 14Hydraulic diagrams page 15

A-side spool control

Unloading unit

El. unloading valve

Inlet

Metering orifice

Tie rod

Outlet

Solenoid operated valve

Pilot relief valve

By-pass flow control unitLever / manual overide

B-side spool control

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RS 2

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�

Technical data - Pressure drop

2

01

43

P (bar)10

Q (l/min)908030 705040 60200 10

56789

02468

101214161820

P (bar)

10 sect.

1 sect.

200 10 9030 40 50 7060 80 Q (l/min)

100

20

403020

864

1210

Q (l/min)706050 80 90

181614

20

10 sect.

1 sect

P (bar)

12011010070100

20

8

46

1210

403020 6050 Q (l/min)80

18

1416

20

1 sect10 sect.

P (bar)

10sect

1sect

1sect

10sect

10sect

1sect

Oil temperature/viscosity for all graphs: + 50°C / 32 cSt

Pressure drop A/B-T

The pressure drops P - T are valid for a valve with a metering orifice PF305 for the centre channel flow. Note that a valve in unloaded mode will have a small flow in the centre channel.

Pressure drop P - T (idling) Pressure drop P - T, unloaded valve

Pressure drop P-A/B

Note that the pressure drop curves P - A/B and A/B - T are valid for sections equipped with spools that are fully open at maximum spool travel.

Pressures / flowMax. system pressure: .................................350 bar (35,0 MPa) Max continuous return line pressure ................ 20 bar (2,0 MPa) Max. return line pressure, pilot oil circuit ...........5 bar (0,5 PMa)Rated flow ....................................................................80 l/min

*Depending on application

Further dataSpringforceforspoolcontrol901inneutralposition:110N(11,0kp).

Springforceforspoolcontrol901withfullyselectedspool:1�0N(1�,0kp).

Recommendedcontaminationlevelatnormalduty:equaltoorbetterthan18/1�asperISO��06.Athighersystempressureand/orforremotecontrol:equaltoorbetterthan17/1�asperISO��06.

Technical data

Hydraulicfluidviscosityrangeatcontinuousoperation:10-�00mm�/s(cSt).Higherviscosityallowedatstartup.

Mineraloilandsyntheticoilbasedonmineraloilarerecommended.

Max.hydraulicfluidtemperaturerangeforcontinuousoperation:-15°C-+80°C.

Spoolleakageat100bar,��cStand�0°C:<1�cm�/min.

Attention:To ensure proper function of remote control systems it is very important that the acceptable level of contamination is not exceeded.

� � 5

RS 2

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41

46 3939

356,

8

190

29,5

52,5

52,5

A G1/2"

T3 G1/2"

43,5

45

43,5

49,5

P1 G1/2"

T4 G3/4"

T2 G3/4"

B G1/2"

57

L

43

126

PLS G1/4"

47,5LF

43 43 43

80.5

37,7

FL

121

103

52,5

258

52,5

PM1 G1/4"TD4 M6

)

EJ

PT G1/4"FL

37,8

32

M8

(4x)

FF

FQ

T1 G3/4"FQ

PP G1/4"FL

PM2 G1/4"FL

FQ

FQ

FQ

DY

(105

FQ

DimensionsNo.of

workingsections

Lmm LFmm

1 16� 8�� 06 1�7� ��9 170� �9� �1�5 ��5 �566 �78 �997 ��1 ��8 �6� �859 507 ��810 550 �71

WeightInlet section ..................................................................... 6,3 kgWorking section .............................................................. 5,0 kgOutlet section .................................................................. 4,6 kg

Electrical unloading

DataPower consumption ...........................................................17 WRated voltage ............................................................12 or 26 VMax voltage variation ...................................................+/- 10%Duty factor ...................................................................... 100%Connection............................Hirschmann ISO 4400-DIN 43650Protection class .................................................................. IP65The unloading valve has manual override.

CodesE912 ......................................push and twist type override 12 VE926 ......................................push and twist type override 26 V

Technical data - Dimensions, weight

6

RS 2

20


6

100 110 120

P (bar)/Q(l/m)40

283236

908050 60 70Pump flow (l/min)

2024

81216

20 30 4004

0 10

Centre flow (l/min)

P1 (bar)

4

5

1

6

2

3

PM1

P1 T4A-side B-side

P1 PM1 T4

6

5

4

2

31

Q l/min2000

10 100604030 50 8070 90

P (bar)

4080

120160200240280320360400

Main relief functionTheby-passflowcontrolvalveFK�01incombinationwiththereliefvalveTB1�formthepilotoperatedreliefvalvefunctionoftheinletsectionfortheprimarycircuit(validforallconfigurations).

TB1�isadjustableandsealable.

Settingrange:�5-�50bar(�,5-�5,0MPa).

Settingrangestep:5bar.

1.Inlet .................................................................................I01G2.By-pass flow control unit .............................................. FK3013.Pilot relief valve ............................................................. TB124.Metering orifice for centre channel flow ....................... PF3055.Unloading unit.............................................................. FU3016.Solenoid operated valve ................................................. E926

The I01G with its integral Q-function provides by-pass of pump flow to tank in idling condition, thereby reducing pressure drop and heat generation. The flow control function of the inlet also regulates the flow to the user corresponding to the travel of a partially selected spool. This, in addition to reduced flow forces and a control response to large extent uneffected by varying pump flows, contributes to the excellent ope-rating characteristics achievable with RS 220.

An integral and from the flow control separated spool, together with a solenoid operated electrical unloading valve, unloads the pump flow to tank and disconnects the oil supply to the valve sections.

Together with a load holding valve RS 220 achieves a very safe emergency dump of pump oil to tank.

The regulated flow into the centre channel is set by an exchangeable metering orifice.

The opening of the by-pass flow control spool is cushi-oned by a special check valve integrated in the spool.

Inlet section - with flow control and electrical unloading

Centreflow(l/min)withPF�05

6 6 7

RS 2

20


T4P1A-side

PM1

B-side

PLS

2

4

1

6 3

7

5

1

6 4 3

25

B-side

T4P1A-side

PM1

T4P1 PM1

5

6

2

3

4

1

P1 PM1 T4

LS

6

5

3

2

4

1

7

Theinletcanalsobedeliveredwithouttheunloadingfunction.Theunloadingspoolandthesolenoidoperatedvalveinthatcasearereplacedbyplugs.

1. Inlet ................................................................................I01G2. By-pass flow control unit ............................................. FK3013. Pilot relief valve ............................................................. TB12 4. Metering orifice for centre channel flow ...................... PF3055. Plug replacing unloading unit ......................................PU3006. Plug replacing electrical unloading valve ........................ PE20

1. Inlet ................................................................................I01G2. Primary relief valve ....................................................... FK3103. Pilot relief valve ............................................................. TB124. Metering orifice for centre channel flow ..................... PF3024. Metering orifice for centre channel flow ...................... PF3034. Metering orfice for centre channel flow....................... PF3045. Shut off unit ................................................................ FU3026. Solenoid operated valve ............................................... E9267. LS port

TheI01Ginletcanalsobeusedinvalvesinsystemswithvariabledisplacementpumps.ThepumphastobeoftypeLS-regulated.

Theinletconfiguredforvariablepumpsprovidesamo-difiedQ-function.Whenthesystemisidlingthepumpdeliversaregulatedflowtothecentrechannel.Theregu-latedflowissetbythecombinationofmeteringorificeandactualstand-bypressurefromthepump.

Themaximumsystempressurepreferablyissetinthepumpbutasanextrasafetytheinletisequippedwithapilotoperatedprimaryreliefvalve.

Astheregulatedflowissetbythecombinationofmete-ringorificeandthestandbypressure,itisimportanttomatchthemeteringorificetotheactualpump.

UsePF�0�ifthestand-bypressureis1�bar,PF�0�ifitis�0barandPF�0�ifitis��bar.

Inlet section - with flow control and without unloading

Inlet section - variable displacement

Generallythestand-bypressureissignificantlyhigherthanthepressuredropoverthemeteringorificeinanopencentresystemandthismeansthatthemeteringorificeinasystemwithvariablepumphastobesmaller.

Anintegralandfromthereliefvalveseparatedspool,togetherwithasolenoidoperatedvalve,shutsofftheoilsupplytothevalvesections.

Togetherwithaloadholdingvalvethisachievesemer-gencyshutoffoftheoilsupply.

8

RS 2

20


8

Working section - hydraulically operated

B

A-side B-side

33 2

6

7

8 19 8

4

A

5

A BX

Y

2

1

9

3

3

4

6

7

8

8

A B

A-side

2

33

6

8 8

4

5

9 1

7B-side

BA

1

2

9

3

3

4 5

6

7

8

8

SectionS01Gequippedasmanuallyoperated.Existingcavitiesforsolenoidvalvesarefittedwithplugs(PE11)whichconnect(drain)thespoolendstotank.Thatisnecessarysincenospoolsealsseparatethereturnlinegalleriesfromthespoolends.Thisfeatureprovidesverygoodprotectionforspoolends(idealformarineuse)andminimizesexternalleakagerisks.

1. Section ..........................................................................S01G2. Load check valve ..........................................................MB223. Plug ................................................................................PE114. Spool control, B-side ....................................................... B015. Lever mechanism ............................................................LMA6. Spool control, A-side ........................................................... 97. Centering spring for manual control ................................MS8. Service port valve ......................................................TBD1609. Spool

SectionS01Gequippedashydraulicallyoperatedandwit-houtmanualoverride.Adapters(HG10)arefittedintothesolenoidvalvecavities.Theyconnectthepressurefromahydrauliccontrolvalvetothespoolends.

1. Section ..........................................................................S01G2. Load check valve ..........................................................MB223. Adapter for hydraulic remote control ............................ HG104. Spool control B-side ........................................................ B015. Plug, replacing lever mechanism ...................................PM026. Spool control A-side ........................................................... 97. Centering spring for proportional control .......................... PS8. Service port valve ......................................................TBD1609. Spool

Working section - manually operated

8 8 9

RS 2

20


A B

1

2

3

3

45

6

7

8

8

9

A B

A-side

1

33 2

6

5

98 8

7B-side

SectionS01Gequippedaselectro-hydraulicallyoperatedandwithmanualoverride.Themechanismforthemanualoverrideisanoptionandcanbereplacedbyaplug.

Itispossibletomixvalvesectionsthatareconfiguredforthedifferenttypesofcontrols.

Thecenteringspringsarespecifiedseparately.

Load check valveThemainfunctionoftheloadcheckvalveistopreventtheloadfrommovingbackwardsiftheloadpressureishigherthanpumppressurewhenoperating.

MB22 Loadcheckvalve.

1. Section ..........................................................................S01G2. Load check valve ..........................................................MB223. Solenoid operated valve for proportional control .......... ER544. Spool control on B-side ................................................... B015. Lever mechanism ............................................................LMA 6. Spool control A-side ............................................................ 97. Centering spring for proportional control .......................... PS8. Service port valve ......................................................TBD1609. Spool .....................................................................................

Check valve MF22

MF22 Loadcheckvalvewithadjustableflowlimitation.MF��maximizestheflowoutfromasection.Typicalapplica-tionisaslewingfunction.

Solenoid valve for EHP - ER52 / 54ER52/54ER5�/5�are�/�-wayelectricallyoperatedpressureredu-cingvalvesusedtoprovidecontrolledpilotpressuretooperatevalvespools.

Functional principle .................PWM (Pulse Width Modulation) Duty factor ..................................................................... 100% Connection ........................................ AMP Junior-Power-Timer Recommended PMW frequency .................................... 100 Hz Protection class ................................................................. IP 65 Ambient temperature ........................................ - 30°C-+ 80°C

Note: If used as ”on-off” it is recommended to limit the current by using for example a coupling resistance. Please contact Nordhydraulic for detailed information.

ER52Rated voltage(+/- 2V) .................................................. 12 V DCStarting current ........................................................... 500 mAFully shifted .................................................................1200 mACoil resistance + 20° .................................................... 5,4 Ohm

ER54Rated voltage (+/- 4V) .................................................. 24 V DCStarting current .............................................................250 mAFully shifted .................................................................. 600 mACoil resistance + 20° ...................................................21,7 Ohm

Working section - electro-hydraulically

MP22 Plugwithoutloadcheckvalve.Thisoptionisusableforexamplewhenthefunctionisequippedwithpilotopera-tedloadholdingvalves.

10

RS 2

20


10

PM2

T3

PT T2

T1

PP

31

2

4

PM2

T3

PT T2

T1

PP

1

2

3

4

1

2

3

4T3 T2

PTTD4

T1

B-side A-side

Section view, looking towards the inlet

1

2

3

4T3 T2

PTTD4

T1

B-side A-side


1. Outlet ........................................................................... U01G2. Plug ................................................................................. P633. Plug ............................................................................... P4004. Plug ...............................................................................PG02

Outlet section - without internal pilot oil supply function

1. Outlet ........................................................................... U01G2. Plug ................................................................................. P633. Plug .............................................................................PK4004. Plug ...............................................................................PG02

Outlet section - with high pressure carry- over function

OutletU01Gequippedforhydraulicallyormanuallyope-ratedsections.

Thecavityforthepressurereducingvalveisplugged,P6�.

OutletU01Gequippedforhydraulicallyormanuallyope-ratedsectionsandforhighpressurecarry-overfunction.Notethatthecarry-overflowistheflowthatisregulatedintothecentrechanneli.e.theflowdeterminedbythemeteringorificeoftheinletsection.WithPF�05-�5l/min.TheplugP�00isfitted.Highpressurecarry-overportscanbeeitherT1otT�.ThecavityforthepressurereducingvalveispluggedwithplugP6�.OnlyT�canbeusedastankconnection.

IfinthiscasetheplugP�00isreplacedbythereliefcart-ridgeTBD160,itfunctionsasreliefvalvefordownstreamservices.

10 10 11

RS 2

20


PM2

1

2

3

4

5T3

PT

PP

T1

T2

6

2

4

1

3

5

T3 T2

PTTD4

T1


B-side A-side

Outlet section - with internal pilot oil supply function

OutletU01Gequippedforuseinanelectrohydraulicallyoperatedvalve.Theoutletisconfiguredforpilotsupplytothevalvesections.

Aninitialpressureisbuiltupbyapilotpressurevalveinthecentrechannel.PortsT1andT�havetobeplugged.

Thepilotpressureislimitedbyapressurereducingvalveconnectedtotheparallelchannel.Duetothefactthattheunloadingunitintheinletshutsofftheflowsupplytotheparallelchannelanemergencystopwillalsoshutofftheoilsupplytothepilotcircuit.

Thereturnflowfromthespoolcontrolsandthepressurereducingvalveispreferabledraineddirectlytotankinaseparatepiping.Inordertoachievethisitisrecommen-dedtousePTandplugtheconnectionbetweenpilotdrainandordinarytankline.

1. Outlet ........................................................................... U01G2. Pilot pressure reducing valve ........................................TRA633. Pilot pressure valve ................................................TMB210/24. Plug for isolate pilot drain from ordinary tank line ........ PMS65. Plug in T3 ..................................................................... PG046. Plug in T1 ..................................................................... PG06

Pilot pressure valve TMB210/2

ThecartridgetypepilotpressurevalveTMB�10/�,nor-mallysetatminimum1�bar,isusedinoutletsectiontosecureavailablepilotpressurebuild-upforremotecon-trol.Dependingonsystemdesignthisnecessarystartingpressurecouldalsobeachievedthroughdownstreamarrangements,forexampleasupportlegvalve.

TMB�10/�isadjustableandsealable.

Pressure reducing valve TRA63 ThecartridgetypepressurereducingvalveTRA6�isusedintheoutlettoprovidepilotoilsupplyforremotecontrol.

TRA6�isfixedsetat��barwhichconsequentlyisthemaximumavailablepressurelevelinthepilotsystem.

1�

RS 2

20


1�

11

B01

34,5

G 1

/4"LB02

15

9

46

G1/4"

LA

Spool control B01Cap.

Spool control LB01Externalhydraulickick-outfromspoolpositionIItoI.Forsectionswithlevermechanism.

Spool controls - B-side

Spool controls - A-sideSpool control 9Springcentered.

Spool control LAExternalhydraulickick-outfromspoolpositionIIItoI.

Spring - spool control

MS spring for manual operation Forces 110-130 NPS spring for proportional remote control Forces 120-320 N

Spool control for remote controlElectrohydrauliccontrolisachivedbyusingspoolcontrolsincombi-nationwithsolenoidvalvesER5�/5�bothonA-sideandB-side.

ThecontrolwillbeproportionalwiththespringPS.

Thecontrolwillbeon-offincombi-nationwiththespringMS.

HydrauliccontrolisachievedbyusingspoolcontrolsincombinationwithadaptersHG10bothonA-sideandB-side.

ThecontrolwillbeproportionalincombinationwiththespringPS.

Thecontrolwillbeon-offincombi-nationwiththespringMS.

Note: Lever mechanism/cavity plugs as shown in pictures above are independent items to be separately configurated.

Typeofcenteringspringhastobespecifiedinthevalveconfiguration

1� 1� 1�

RS 2

20


TPPL

BSA

S

X

Y

Z

30°

30°

30°

LMA2

LMB2

LMC2

LMD2

Spools - main design parametersTheRS��0spoolsareavailableinavarietyofflowsandstylestoaccom-modatemostdesignrequirements.Thespoolmatrixconfiguratorbelowwillhelpandguideyoutoselectthecorrectspoolforyourapplication.Thedevelopmentofnewspoolsisa

continuousprocessandallavailablespoolsarenotdescribedinthisdatasheet.ForfurtherdetailsonspoolspleasecontactNordhydraulic.

SymbolType

Spool 1

Spool 2

Spool 3

Spool 4

Spool 8

Function

A Standard

Type of applicationA Spool general useK Crane optimizedL Loader optimized

Pump flow, Q-inlet

6 30 - 50 l/min8 50 - 75 l/min

Detailed demandsA Standard Example:- Restricted flow- Asymmetric- Spool end

Spool code

1 6 K A A

Lever mechanism on B-sideLMA2…LME2Mechanismwithleverholderbutwithoutlever.TheleverMS190hastobeorderedasaseparateitem.Thethirdletterinthecodegivestheanglefortheassemblyoftheleverholder.

LM2Levermechanismwithoutleverholder,locknutandhandle.

PM02Plugreplacinglevermechanism.

1�

RS 2

20


1�

80

0

40

120

200

160

2010 30 40 50 l/min

240

flow60 70

P (bar)

280

0

280

P (bar)

10590flow

240

l/min75604515 30

160

200

120

40

0

80

320

0

0 3015 45 60 75 l/min90 105flow

5

10

15

P (bar)

0

SB500TBS400

Port relief valve TBD160

Port relief and anticavitation valve TBS400

TheTBD160isadifferentialarea,directactingreliefvalve,forthesecondarycircuit.Itisadjustableandsealable.

SettingrangesforTBD/TBSD160:

�5-�00bar(�,5-�0,0MPa).

Settingrangestep:5bar.

Port relief and anticavitation valve TBSD160SeeTBD160forfunctionalprinciple.

TBSD160isadjustableandsealable.

Relief characteristics TBD/TBSD160

Anticavitation characteristics TBSD160

Combinationofpilotoperatedreliefandanticavitationvalve.

TBS�00isadjustableandsealable.

Settingrange:

�5-�50bar(�,5-�5,0MPa).

Settingstep:5bar.

Anticavitation valve SB500

Relief characteristics TBS400

Service port valves

Anticavitation characteristics TBS400 and SB500

Theanticavitationvalveservicetoensurethat,intheeventofalowerpressureinthecylinderportthaninthetank,oilcanbedrawnfromthesystemoiltanktotheconsumer.

1� 1� 15

RS 2

20


PM2

Y

X

Y

X

Y

FXX

Y

BA

T3

T2PTBABA

PP

T1

BAT4P1 PM1

PM1

T3

T1

PM2

PP

T2PTBABABABABABAT4P1

Typical hydraulic circuit diagrams

Hydraulic remote controlled valve. 2:nd section with 4-position spool. Single circuit.Inlet with flow control but without unloading.

Electro hydraulic remote controlled valve with internal pilot supply. Single circuit. Inlet with flow control and unloading.

16

RS 2

20


Documents

Directional control valve RS 220 zdjecia...Nordhydraulic AB P.O Box 189 (Industrivägen 15) SE-872 24 KRAMFORS Sweden Telephone: Int. +46 612 71 72 00 Telefax: Int. +46 612 71 72 15