Samson 3730-0 Service manual

Mounting and
Operating Instructions
EB 8384-0 EN (1300-1609)
Edition August 2017
Series 3730
Type 3730-0 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 se-
rious injury
NOTICE
Property damage message or mal-
function
Note:
Additional information
Tip:
Recommended action

2 EB 8384-0 EN

Contents
EB 8384-0 EN 3
1 Important safety instructions ..........................................................................5
2 Article code...................................................................................................6
3 Design and principle of operation ..................................................................7
3.1 Technical data ...............................................................................................8
4 Attachment to the control valve – Mounting parts and accessories .................12
4.1 Direct attachment.........................................................................................14
4.1.1 Type 3277-5 Actuator ..................................................................................14
4.1.2 Type 3277 Actuator .....................................................................................16
4.2 Attachment according to IEC 60534-6 (NAMUR) ...........................................18
4.3 Attachment according to VDI/VDE3847 .......................................................20
4.4 AttachmenttoType3510Micro-owValve ....................................................26
4.5 Reversingamplierfordouble-actingactuators ..............................................26
4.5.1 Reversingamplier(1079-1118or1079-1119) ............................................28
4.6 Attachingpositionerswithstainlesssteelhousings...........................................28
4.7 Airpurgingfunctionforsingle-actingactuators ..............................................30
5 Connections ................................................................................................35
5.1 Pneumaticconnections..................................................................................35
5.1.1 Signalpressuregauges ................................................................................35
5.1.2 Supplypressure ...........................................................................................35
5.2 Electricalconnections ...................................................................................36
6 Operation...................................................................................................39
6.1 Operatingcontrols .......................................................................................39
7 Start-up and settings ...................................................................................40
7.1 Defaultswitchpositions ................................................................................40
7.2 Fail-safeposition..........................................................................................40
7.3 VolumerestrictionQ.....................................................................................40
7.4 Selectingthetravel.......................................................................................41
7.5 Directionofaction........................................................................................41
7.6 Limitingthesignalpressure...........................................................................41
7.7 Referencevariable .......................................................................................41
7.8 Connectingthepositioner .............................................................................42

4 EB 8384-0 EN
Contents
7.9 Zeroadjustment...........................................................................................42
7.10 Gain...........................................................................................................42
7.11 Adaptingthetravel ......................................................................................42
7.12 Activatingthetight-closingfunction ...............................................................43
8 Maintenance ...............................................................................................43
9 Servicing explosion-protected devices ..........................................................43
10 Dimensions in mm.......................................................................................44

EB 8384-0 EN 5
Important safety instructions
1 Important 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instruc-
tions,trainedpersonnelisreferredtoasindividualswhoareabletojudgetheworkthey
areassignedtoandrecognizepossible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explosion-
protecteddevicesinhazardousareas.Refertosection9.
−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.
To avoid damage to any equipment, the following also applies:
−Propershippingandstorageareassumed.
−Donotgroundelectricweldingequipmentneartothepositioner.
Note
Devices with a CE marking fulll the requirements of the Directives 2014/30/EU and
2011/65/EU and, depending on the version, 2014/34/EU as well.
The declarations of conformity are included at the end of these instructions.


6 EB 8384-0 EN
Article code
2 Article code
Positioner Type 3730-0 x 00000000x0 0 x0x x
Explosion protection
Without 0
ATEX: II2GExiaIICT6Gb;II2DExiaIIICT80°CDb 1
FM/CSA:ClassI,Zone0AExiaIIC;ClassI,II,III,Div.1,GroupsA-G;
ClassI,Div.2,GroupsA-D;ClassII,Div.2,GroupsF,G/
ExiaIICT6;ClassI,Zone0;ClassII,GroupsE-G;
ExnAIIT6;ClassI,Zone2;ClassII,Div.2,GroupsE-G
3
ATEX: II2GExtbIIICT80°CDbIP66 5
JIS: ExiaIICT6 7
ATEX: II3GExnAIIT6;II3GExicIICT6;II3DExtcIIICT80°CIP66 8
Housing material
Aluminum 0
Stainlesssteel1.4581 1
Special applications
Without 0
Compatiblewithpaint 1
Exhaustairwith¼NPTconnection,backofhousingsealed 2
Special version
Without 0 0
EAC Ex: 1ExiaIICT6/T5/T4GbX;ExtbIIICT80°CDbX 1 1 4
EAC Ex: 2ExnAIICT6/T5/T4GcX;2ExicIICT6/T5/T4GcX;
 2ExtcIIICT80°CDcX
8 2 0
AttachmentaccordingtoVDI/VDE3747withinterface 6
AttachmentaccordingtoVDI/VDE3747preparedforinterface 7

EB 8384-0 EN 7
Design and principle of operation
3 Design and principle of oper-
ation
Theelectropneumaticpositionerismounted
onpneumaticcontrolvalvesandisusedto
assignthevalveposition(controlledvari-
ablex)tothecontrolsignal(referencevari-
ablew).Thepositionercomparestheelectric
controlsignalofacontrolsystemtothetravel
ofthecontrolvalveandissuesasignalpres-
sure(outputvariabley)forthepneumatic
actuator.
Asupplypressurebetween1.4to6baris
required.Theelectricinputsignalisarefer-
encevariablebetween4to20mA.
Thepositionerisdesigneddependingonthe
correspondingaccessoriesfordirectattach-
menttoType3277Actuatorsorforattach-
menttoactuatorsaccordingtoIEC60534-6
(NAMUR).
Thepositionerconsistsofatravelsensorsys-
temproportionaltoresistance,ananalog
i/pconverterwithadownstreamaircapaci-
tyboosterandtheelectronicswithmicrocon-
troller.
Thepositionofthevalvestemistransmitted
asalineartravelmotionoverthepick-uple-
vertothetravelsensor(2)andsuppliedto
an analog PD controller (3). The PD control-
lercomparesthisactualvalvepositiontothe
2
3
6
7
8
10
1
9
4
w
x
Qy
x
1Controlvalve
2Travelsensor
3 PD controller
4DIPswitches
6i/pconverter
7Aircapacitybooster
8Pressureregulator
9 Flowregulator
10 Volumerestriction
Fig.1: Functional diagram

8 EB 8384-0 EN
Design and principle of operation
DCcontrolsignalcomingfromthecontrol
system,e.g.a4to20mAsignal.
Incaseofasystemdeviation,theactivation
ofthei/pconverter(6)ischangedsothat
theactuatorofthecontrolvalve(1)ispres-
surizedorventedaccordinglyoverthe
downstreambooster(7).Thiscausesthe
valveplugtomovetothepositiondeter-
minedbythereferencevariable.
Thesupplyairissuppliedtotheboosterand
thepressureregulator(8).Anintermediate
owregulator(9)withxedsettingsisused
topurgethepositionerand,atthesame
time,guaranteestrouble-freeoperationof
thebooster.Theoutputsignalpressuresup-
pliedbytheboostercanbelimitedbyacti-
vatingtheDIPswitchsettingS5 (4).
Thevolumerestriction(10)andtheswitchS6
areusedtooptimizethepositionerby
adaptingittotheactuatorsizeandchang-
ingthegainfactor.
Tight-closing function:
Afteractivatingthetight-closingfunction(re-
fertosection7.12),thepneumaticactuator
iscompletelylledwithairorventedassoon
asthereferencevariablefallsbeloworex-
ceedsthecorrespondingdeactivatingpoint
of4.5mAor19.5mA.
Inthecaseofthree-wayvalves,thefunction
allowstheplugmovetotheendposition
withfullactuatorthrust.
3.1 Technical data
Type 3730-0 Positioner (the technical data for explosion-protected devices may be restricted by the limits
specied in the test certicates)
Ratedtravel Adjustable: DirectattachmenttoType3277: 5.3to 30mm
 Attachmentacc.toIEC60534-6: 5.3to200mm
Travelrange Adjustablewithintheratedtravel,max.ratio1:5
Referencevariablew Signal range 4 to 20 mA
Split-rangeoperation4to12mAand12to20mA,activatedatDIPswitches
Two-wiredevicewithreversepolarityprotection·Staticdestructionlimit100mA
Minimum current > 3.6 mA
Load impedance Versionwithoutexplosionprotection:≤6V(correspondingto300Ωat20mA),
explosion-protectedversion:≤6V
Supply air
Airqualityacc.toISO8573-1
(edition2001-02):
1.4to7bar(20to105psi)
Max.particlesizeanddensity:Class4·Oilcontent:Class3·Pressuredewpoint:
Class3oratleast10Kbeneaththelowestambienttemperaturetobeexpected
Signalpressure(output) 0baruptothecapacityofthesupplypressure
Limitationtoapprox.2.4barenabledatDIPswitch

EB 8384-0 EN 9
Design and principle of operation
Type 3730-0 Positioner (the technical data for explosion-protected devices may be restricted by the limits
specied in the test certicates)
Characteristic Linear,deviationfromcharacteristic≤1%
Hysteresis ≤1%
Sensitivity ≤0.1%
Directionofaction SelectableoverDIPswitch
Airconsumption,steadystate Independentfromsupplypressureapprox.120ln/h
Air output capacity
Actuatorlledwithair
Actuatorvented
WhenΔp=6bar: 8.5mn³/h,whenΔp=1.4bar:3.0mn³/h KVmax(20°C)=0.09
WhenΔp=6bar:14.0mn³/h,whenΔp=1.4bar:4.5mn³/h KVmax(20°C)=0.15
Permissibleambienttemperature –20to+80°C
–45to+80°Cwithmetalcablegland
Thetemperaturelimitsforexplosion-protecteddevicesmayberestrictedbythe
limitsspeciedinthetestcerticates.
Inuences Temperature: ≤0.15%/10K
Supplyair: None
Vibrations: ≤0.25%upto2000Hzand4gaccordingtoIEC770
Electromagneticcompatibility ComplyingwithEN61000-6-2,EN61000-6-3,EN61326-1andNAMURRec-
ommendation NE 21
Useinsafety-instrumented
systemsacc.toIEC61508
Suitableforuseinsafety-instrumentedsystemsuptoSIL2(singledevice)andSIL3
(withredundantconguration),emergencyshutdownatareferencevariableof
0mA
Degreeofprotection IP 66
Materials Die-castaluminumENAC-AlSi12(Fe)(ENAC-44300)acc.toDINEN1706,
chromatedandplasticcoated
Externalparts:stainlesssteel1.4404/316L
Weight Approx.1kg
Compliance ·

10 EB 8384-0 EN
Design and principle of operation
Summary of explosion protection certicates for Type3730-0 Positioner
Type Certicate Type of protection/comments
-01
ECTypeExamina-
tionCerticate
Number PTB03.ATEX2099
II2GExiaIICT6Gb
II2DExiaIIICT80°CDb
Date 2016-04-19
Number RU C-DE.08.B.00113
1ExiaIICT6/T5/T4GbX
ExtbIIICT80°CDbX
Date 2013-11-15
Valid until 2018-11-14
-03
CSA Number 1613095 ExiaIICT6;ClassI,Zone0
ClassII,GroupsE,F,G
ExnAIIT6;ClassI,Zone2
ClassII,Div.2,GroupsE,F,G
Date 2005-02-11
FM Number 3021579 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
Date 2004-12-01
-05
ECTypeExamina-
tionCerticate
Number PTB03.ATEX2099
II2DExtbIIICT80°CDbIP66
Date 2016-04-19
-07
JIS
Number TC17330
ExiaIICT6
Date 2017-07-29
Valid until 2020-07-28
-08
ECTypeExamina-
tionCerticate
Number PTB03.ATEX2179X II3GExnAIIT6
II3GExicIICT6
II3DExtcIIICT80°CIP66
Date 2013-09-17
Number RU C-DE.08.B.00113
2ExnAIICT6/T5/T4GcX
2ExicIICT6/T5/T4GcX
2ExtcIIICT80°CDcX
Date 2013-11-15
Valid until 2018-11-14