Samson 4763 Service-Handbuch

Mounting and

Operating Instructions

EB 8359-2 EN

Edition April 2014

Type 4763 Electropneumatic Positioner

Denition of signal words

DANGER!

Hazardous situations which, if not

avoided, will result in death or seri-

ous injury

WARNING!

Hazardous situations which, if not

avoided, could result in death or seri-

ous injury

NOTICE

Property damage message or mal-

function

Note:

Additional information

Tip:

Recommended action



2 EB 8359-2 EN

Contents

EB 8359-2 EN 3

1 General safety instructions.............................................................................5

2 Article code...................................................................................................6

3 Technical data...............................................................................................7

3.1 Explosionprotectioncerticates.......................................................................9

4 Design and principle of operation ................................................................10

5 Attachment .................................................................................................12

5.1 Attachmenttovalvewithcastyoke ................................................................12

5.2 Attachmenttovalvewithrod-typeyoke..........................................................12

5.3 Housingcover .............................................................................................12

6 Connections ................................................................................................14

6.1 Electricalconnections ...................................................................................14

6.2 Pneumaticconnections..................................................................................15

6.3 Pressuregauge ............................................................................................15

6.4 Supplypressure ...........................................................................................16

7 Operation...................................................................................................17

7.1 Assignmentofthepositionerandtheactuator ................................................17

7.1.1 Determiningandchangingtheoperatingdirection .........................................18

7.2 Startingpointandreferencevariable.............................................................20

7.3 Adjustmentaftermountingthepositioneronthevalve.....................................20

7.3.1 Settingtheairdelivery(volumerestrictionQ)andproportionalbandXp ..........20

7.3.2 Settingforactuatorwithfail-safeaction“stemextends”...................................22

7.3.3 Settingforactuatorwithfail-safeaction“stemretracts” ...................................22

7.4 Exchangingtherangespring ........................................................................23

8 Converting the electropneumatic into a pneumatic positioner ........................24

9 Servicing explosion-protected devices ..........................................................26

10 Maintenance, calibration and work on equipment ........................................27

11 Accessories and mounting parts...................................................................28

12 Dimensions in mm.......................................................................................29

EB 8359-2 EN 5

General safety instructions

1 General safety instructions

Foryourownsafety,followtheseinstructionsconcerningthemounting,startupandopera-

tionofthepositioner:

−Thepositioneristobemounted,starteduporoperatedonlybytrainedandexperienced

personnelfamiliarwiththeproduct.

Accordingtothesemountingandoperatinginstructions,trainedpersonnelisreferredto

asindividualswhoareabletojudgetheworktheyareassignedtoandrecognizepossi-

bledangersduetotheirspecializedtraining,theirknowledgeandexperienceaswellas

theirknowledgeoftheapplicablestandards.

−Explosion-protectedversionsofthispositioneraretobeoperatedonlybypersonnelwho

hasundergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplo-

sion-protecteddevicesinhazardousareas.

−Anyhazardsthatcouldbecausedinthevalvebytheprocessmedium,thesignalpres-

sureorbymovingpartsaretobepreventedbytakingappropriateprecautions.

−Ifinadmissiblemotionsorforcesareproducedinthepneumaticactuatorasaresultof

thesupplypressurelevel,itmustberestrictedusingasuitablesupplypressurereducing

station.

−Propershippingandstorageareassumed.

Note:

Devices with a CE marking fulll the requirements of the Directives 2014/34/EU and

2014/30/EU.

The Declaration of Conformity is available on request.



6 EB 8359-2 EN

Article code

2 Article code

Electropneumatic positioners Type 4763- x 1x0 0 xxxx0x0x x 0

Explosion protection

Without 0 2/7

ExII2GExiaIICT6GbaccordingtoATEX 1

CSA/FMintrinsicallysafe/nonincendive 3

ExII3GExnAIIT6Gc/ExicIICT6GcforZone2acc.toATEX

8 2/7

Spring

Spring1,travel=15mm 1

Spring2,travel=30mm,splitrange15mm 2

Spring3,travel=60mm,splitrange30mm 3

Pneumaticconnections

ISO 228/1 G ¼ 1

¼-18NPT 3

Electricalconnection(cablegland)

M20x1.5blue(plastic) 1

M20x1.5black(plastic) 2

M20x1.5(nickel-platedbrass) 7 2

i/pconverters

Type6109 1

Type6112 2

Referencevariable

4to20mA 0

0to20mA 2 2

1to 5mA 2 3

Temperaturerange

Standard 0

Lowtemperaturedownto–45°C 2 2

Specialversion

Without 000

Foroxygen1) 0/1 0 1 6

GOSTcerticate 8 2 0 1 0

1) Specialversionsuitableforoxygenuptomaximum+60°C

(accordingtoAIRLIQUIDEtestreportno.2014/R171a1)

EB 8359-2 EN 7

Technical data

3 Technical data

Controlledvariable(travelrange) 7.5to60mm,withleverextension:7.5to90mm

Referencevariable1)

Split-range0to50%or

50to100%

referencevariablespan

(upto50mmtravel)

4to20mA(Ex), Ri=250Ω2)

4to20mA(withoutexplosionprotection), Ri=200Ω2)

0to20mA, Ri=200Ω2)

1to5mA, Ri=880Ω2)

Rangespring SeeTable1onpage21

Supplyair 1.4to6bar(20to90psi)

Airqualityacc.toISO8573-1:Max.particlesizeanddensity:

Class4

Oilcontent:Class3·Pressuredewpoint:Class3

Signalpressurepst(output) Max.0to6.0bar(0to90psi)

Characteristic Linearcharacteristic·Deviationfromcharacteristicaccordingto

terminalpointmethod:≤1.5%

Hysteresis <0.5%

Sensitivity <0.1%

Operatingdirection Reversible

ProportionalbandXp(at1.4bar

supplyair)

1to3.0%withspring1

1to2.0%withspring2

1to1.5%withspring3

Airconsumptioninsteadystate

(Xp=1%)

With1.4barsupplyair:0.19mn³/h

With6barsupplyair:0.5mn³/h

Air output AtΔp1.4bar:3.0mn³/h

AtΔp6bar:8.5mn³/h

TransittimewithType3271

Actuator,“stemextends”

240cm²≤1.8s

350cm²≤2.5s

700cm²≤10.0s

Perm.ambienttemperature3),4) With Type 6109 i/p Converter:

–20to+70°C

–35to+70°C(metalcablegland)

With Type 6112 i/p Converter:

–20to+80°C

–40to+80°C(metalcablegland)

–45to+80°C(specialversion)

8 EB 8359-2 EN

Technical data

Inuences Temperature:<0.03%/1K

Supplyair:<0.3%/0.1bar

Vibrations:<2%between10upto150Hzand4g

Variablepositionwhenturnedby180°:<3.5%

Degreeofprotection IP54·Ventingovercheckvalve(1790-7408):IP65

Compliance ·

Electromagneticcompatibility ComplyingwithEN61000-6-2,EN61000-6-3andEN61326-1

Weight Approx.1.2kg

Materials

Housing Die-castaluminum,chromatedandplasticcoated

Externalparts Stainlesssteel

1) ThedatalistedinthecerticateofconformityappliestotheversionwithtypeofprotectionExiaIIC.

2) Ri=Coilresistance(atapprox.20°C)±7%tolerance

3) Observethelimitsinthecerticateofconformityforexplosion-protectedversions.

4) Withspecialversionsuitableforoxygenuptomaximum+60°C

EB 8359-2 EN 9

Technical data

3.1 Explosion protection certicates

Type Certication Type of protection

4763-1

Number RUCDE.08.00697

1ExiaIICT6/T5/T4GbXDate 15.12.2014

Validuntil 2019-12-14

4763-1

Number PTB02ATEX2078

II2GExiaIICT6Gb

Datum 2002-07-19

ECtypeexamination

certicate

4763-3 ®

Number 1607873 ExiaIICT6;ClassI,Zone0;

ClassI,II,Div.1,GroupsA,B,C,D,E,F,G;

ClassI,II,Div.2,GroupsA,B,C,D,E,F,G;

Date 2005-09-16

4763-3

Number 3020228 ClassI,Zone0AExiaIIC

ClassI,II,III;Div.1,GroupsA,B,C,D,E,F,G

ClassI,Div.2,GroupsA,B,C,D;

ClassII,Div,2GroupsF,G;ClassIII;

Date 2005-02-28

4763-7 JIS

Number TC14411

ExiaIICT6Date 2015-02-09

Validuntil 2018-03-01

4763-8

Number RUCDE.08.00697

2ExnAIICT6/T5/T4GcXDate 2014-12-15

Validuntil 2019-12-14

4763-8

Number PTB03ATEX2183X

II3GExnAicIICT6Gc

Date 2003-09-30

Statementof

conformity

10 EB 8359-2 EN

Design and principle of operation

4 Design and principle of oper-

ation

Theelectropneumaticpositionerisusedto

assignthevalveposition(controlledvariable)

totheinputsignal(referencevariable).The

positionercomparesthecontrolsignalofa

controlsystemtothetravelofthecontrol

valveandissuesasignalpressure(output

variable)forthepneumaticactuator.

Thepositionerconsistsofanelectropneumat-

icconverterunit(21)andapneumaticunit

equippedwithalever(1),shaft(1,1)and

rangespringaswellasthepneumaticcon-

trolsystemwithnozzle,apperplateand

booster.TheDCcontrolsignal,e.g.4to

20mA,issuedbythecontroller,istransmit-

tedtotheelectropneumaticconverterunit

(i/pconverter)whereitisconvertedintoa

proportionalpressuresignalpe.

Anychangeoftheinputcurrentsignalcaus-

esaproportionalchangeoftheairpressure

pefedtothepneumaticcontrolsystem.

Theairpressurepeproducesaforcewhich

actsonthesurfaceofthemeasuringdia-

phragm(8)andiscomparedtotheforceof

therangespring(6).

Themotionofthemeasuringdiaphragm(8)

istransferredtotheapperplate(10.2)over

thefeelerpin(9.1),andthenozzle(10.1)

releasespressure.Anychangeofeitherthe

airpressurepeorthevalvestemposition

causesthepressuretochangeinthebooster

(12)connecteddownstreamofthenozzle.

Thesignalpressurepstwhichisreleased

causestheplugstemtoassumeaposition

basedonthereferencevariable.

TheadjustablevolumerestrictionQ(14)and

Xp(gain)restriction(13)areusedtoopti-

mizethecontrolloopofthepositioner.

Therangespring(6),whichcanbeex-

changed,isassignedtoboththeratedvalve

travelandthespanofthereferencevariable.

Legend for Fig.1 and Fig.2

1Leverforvalvetravel

1.1 Shaft

2Pin

2.1 Nut

3Sleeve

4Zeropointadjustment

5Fasteningscrew

6Rangespring

6.1 Bracket

7Fasteningscrew

8Measuringdiaphragm

9Diaphragmplate

9.1 Feeler pin

10 Nozzleblock

10.1 Nozzle

10.2 Flapperplate

11 Coverplate

12 Booster

13 Xprestriction

14 VolumerestrictionQ

15 Holeforfasteningscrew

20 Plate

21 i/pconverter

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