Samson 3730 Series Service manual

Translation of original instructions
EB 8384-4 EN
Edition April 2022
Series3730
Type3730-4 Electropneumatic Positioner
Communication: PROFIBUS-PA
Old design
New design
Firmware version K 2.02/R 1.53

Denition of signal words
Hazardous situations which, if not avoided,
will result in death or serious injury
Hazardous situations which, if not avoided,
could result in death or serious injury
Property damage message or malfunction
Additional information
Recommended action
DANGER
!
WARNING
!
NOTICE
!
Note
Tip
EB 8384-4 EN
Note on these mounting and operating instructions
These mounting and operating instructions assist you in mounting and operating the device
safely. The instructions are binding for handling SAMSON devices. The images shown in
these instructions are for illustration purposes only. The actual product may vary.
ÎFor the safe and proper use of these instructions, read them carefully and keep them for
later reference.
ÎIf you have any questions about these instructions, contact SAMSON‘s After-sales Service
([e-mail]).
Documents relating to the device, such as the mounting and operating
instructions, are available on our website at www.samsongroup.com >
Service & Support > Downloads > Documentation.

Contents
EB 8384-4 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-4
1.2 Notes on possible personal injury ................................................................1-4
1.3 Notes on possible property damage.............................................................1-5
1.4 Special instructions concerning explosion protection ......................................1-7
2 Markings on the device ..............................................................................2-1
2.1 Nameplate .................................................................................................2-1
2.2 Article code................................................................................................2-2
2.3 Firmware versions.......................................................................................2-3
3 Design and principle of operation ...............................................................3-1
3.1 Mounting versions.......................................................................................3-2
3.2 Additional equipment..................................................................................3-2
3.3 Communication ..........................................................................................3-3
3.4 CongurationusingtheTROVIS-VIEWsoftware ............................................3-3
3.5 Technical data ............................................................................................3-4
3.6 Dimensions in mm.......................................................................................3-9
3.6.1 FixinglevelsaccordingtoVDI/VDE3845(September2010) .......................3-13
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the positioner.................................................4-1
4.3 Transporting the positioner...........................................................................4-1
4.4 Storing the positioner ..................................................................................4-1
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-2
5.3 Adjusting the lever and pin position..............................................................5-2
5.4 Exchanging the lever...................................................................................5-2
5.4.1 Travel tables ...............................................................................................5-5
5.5 Positioner attachment ..................................................................................5-6
5.5.1 Direct attachment........................................................................................5-6
5.5.2 AttachmentaccordingtoIEC60534-6........................................................5-10
5.5.3 AttachmentaccordingtoVDI/VDE3847-1.................................................5-12
5.5.4 AttachmentaccordingtoVDI/VDE3847-2.................................................5-16
5.5.5 AttachmenttoType3510Micro-owValve .................................................5-24
5.5.6 Attachment to rotary actuators ...................................................................5-24
5.5.7 Reversingamplierfordouble-actingactuators ...........................................5-30
5.6 Attachment of external position sensor........................................................5-30

Contents
EB 8384-4 EN
5.6.1 Mounting the position sensor with direct attachment.....................................5-31
5.6.2 MountingthepositionsensorwithattachmentaccordingtoIEC60534-6 ......5-32
5.6.3 MountingthepositionsensortoType3510Micro-owValve........................5-34
5.6.4 Mounting on rotary actuators.....................................................................5-35
5.7 Mounting the leakage sensor .....................................................................5-36
5.8 Retrottinginductivelimitswitch .................................................................5-37
5.9 Mounting positioners with stainless steel housings........................................5-38
5.10 Air purging function for single-acting actuators ...........................................5-38
5.11 Pneumatic connection................................................................................5-40
5.11.1 Signal pressure connection ........................................................................5-41
5.11.2 Signal pressure reading.............................................................................5-41
5.11.3 Supply pressure ........................................................................................5-41
5.11.4 Signal pressure (output).............................................................................5-41
5.12 Electrical connection..................................................................................5-42
5.12.1 SwitchingamplieraccordingtoEN 60947-5-6 .........................................5-45
5.12.2 Establishing communication.......................................................................5-45
5.13 Mounting accessories ................................................................................5-47
6 Operation..................................................................................................6-1
7 Start-up and conguration..........................................................................7-1
7.1 Determining the fail-safe position .................................................................7-2
7.2 Adjusting the volume restriction Q................................................................7-3
7.3 Limiting the signal pressure..........................................................................7-4
7.4 Checking the operating range of the positioner .............................................7-5
7.5 Initializing the positioner .............................................................................7-6
7.5.1 MAX – Initialization based on maximum range .............................................7-8
7.5.2 NOM – Initialization based on nominal range ..............................................7-9
7.5.3 MAN – Initialization based on a manually selected OPEN position...............7-11
7.5.4 SUb – Substitute calibration .......................................................................7-12
7.6 Setting other parameters............................................................................7-17
7.9 Adjusting inductive limit switch...................................................................7-19
8 Operation..................................................................................................8-1
8.1 Adaptingthedisplaydirection .....................................................................8-1
8.2 Changingtheoperatingmode .....................................................................8-2
8.2.1 Closed-loopoperation(automaticmode) ......................................................8-2
8.2.2 Manualmode.............................................................................................8-2
8.2.3 Fail-safeposition(SAFE)..............................................................................8-3
8.3 Performingzerocalibration .........................................................................8-4
8.4 Resettingthepositioner................................................................................8-5

Contents
EB 8384-4 EN
9 Malfunctions ..............................................................................................9-1
9.1 Troubleshooting ..........................................................................................9-2
9.2 Emergency action .......................................................................................9-3
10 Servicing..................................................................................................10-1
10.1 Cleaning the cover window........................................................................10-2
10.2 Cleaningthelters ....................................................................................10-2
10.3 Maintenance of the supply air pressure reducing stations .............................10-2
10.4 Firmware updates .....................................................................................10-2
10.5 Periodic inspection and testing of the positioner...........................................10-2
11 Decommissioning .....................................................................................11-1
12 Removal ..................................................................................................12-1
13 Repairs ....................................................................................................13-1
13.1 Servicing explosion-protected devices.........................................................13-1
13.2 Returning devices to SAMSON ..................................................................13-1
14 Disposal...................................................................................................14-1
15 Certicates...............................................................................................15-1
16 Annex A (conguration instructions)..........................................................16-1
16.1 Parameters and functions...........................................................................16-1
16.1.1 Error codes...............................................................................................16-8
16.2 Valvecharacteristicselection....................................................................16-17
17 Annex B...................................................................................................17-1
17.1 Accessories ..............................................................................................17-1
17.2 After-sales service.....................................................................................17-6

EB 8384-4 EN

EB 8384-4 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
TheSAMSONType3730-4Positionerismountedonpneumaticcontrolvalvesandusedto
assign the valve position to the control signal. The device is designed to operate under exact-
lydenedconditions(e.g.operatingpressure,temperature).Therefore,operatorsmusten-
sure that the positioner is only used in applications where the operating conditions corre-
spond to the technical data. In case operators intend to use the positioner in applications or
conditionsotherthanthosespecied,contactSAMSON.
SAMSON does not assume any liability for damage resulting from the failure to use the de-
vice for its intended purpose or for damage caused by external forces or any other external
factors.
ÎRefertothetechnicaldataforlimitsandeldsofapplicationaswellaspossibleuses.
Reasonably foreseeable misuse
TheType3730-4Positionerisnot suitable for the following applications:
−Useoutsidethelimitsdenedduringsizingandbythetechnicaldata
Furthermore, the following activities do not comply with the intended use:
−Use of non-original spare parts
−Performing maintenance activities not described in these instructions
Qualications of operating personnel
The positioner must 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 refers to individuals who are able to judge the work they are assigned to
and recognize possible hazards due to their specialized training, their knowledge and expe-
rience as well as their knowledge of the applicable standards.
Explosion-protected versions of this device must be operated only by personnel who has un-
dergone special training or instructions or who is authorized to work on explosion-protected
devices in hazardous areas.

1-2 EB 8384-4 EN
Safety instructions and measures
Personal protective equipment
Nopersonalprotectiveequipmentisrequiredforthedirecthandlingofthepositioner.Work
on the control valve may be necessary when mounting or removing the device.
ÎObservetherequirementsforpersonalprotectiveequipmentspeciedinthevalvedocu-
mentation.
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions,conversionsorothermodicationsoftheproductarenotauthorizedbySAMSON.
They are performed at the user's own risk and may lead to safety hazards, for example. Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety features
Upon failure of the air supply or electric signal, the positioner vents the actuator, causing the
valve to move to the fail-safe position determined by the actuator.
Warning against residual hazards
Thepositionerhasdirectinuenceonthecontrolvalve.Anyhazardsthatcouldbecausedin
the valve by the process medium, the signal pressure or by moving parts are to be prevented
by taking appropriate precautions. Plant operators and operating personnel must observe all
hazard statements, warning and caution notes in these mounting and operating instructions,
especially for installation, start-up and service work.
If inadmissible motions or forces are produced in the pneumatic actuator as a result of the
supply pressure, it must be restricted using a suitable supply pressure reducing station.
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations. Opera-
tors are obliged to provide these mounting and operating instructions to the operating per-
sonnel and to instruct them in proper operation. Furthermore, operators must ensure that op-
erating personnel or third parties are not exposed to any danger.

EB 8384-4 EN 1-3
Safety instructions and measures
Responsibilities of operating personnel
Operating personnel must read and understand these mounting and operating instructions as
wellasthespeciedhazardstatements,warningandcautionnotes.Furthermore,theoperat-
ing personnel must be familiar with the applicable health, safety and accident prevention
regulations and comply with them.
Referenced standards, directives and regulations
DeviceswithaCEmarkingfulllthefollowingrequirementsoftheDirectives:
−Type3730-4:2014/30/EU,2011/65/EU
−Type3730-41/-45/-48:2014/30/EU,2014/34/EU,2011/65/EU
DeviceswithanEACmarkingfulllthefollowingrequirementsoftheRegulations:
−Type3730-4:TRCU020/2011
Seethe'Certicates'sectionforthedeclarationsofconformityandEACcerticates.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Operating instructions for valve diagnostics: uEB8389
−Congurationmanual:uKH8384-4
−Safety manual: uSH8384-4
−The mounting and operating instructions of the components on which the positioner is
mounted (valve, actuator, valve accessories etc.).

1-4 EB 8384-4 EN
Safety instructions and measures
1.1 Notes on possible severe personal injury
DANGER
!
Risk of fatal injury due to the ignition of an explosive atmosphere.
Incorrect installation, operation or maintenance of the positioner in potentially explosive
atmospheres may lead to ignition of the atmosphere and ultimately to death.
ÎThefollowingregulationsapplytoinstallationinhazardousareas:EN60079-14
(VDE0165,Part1).
ÎInstallation, operation or maintenance of the positioner must only be performed by
personnel who has undergone special training or instructions or who is authorized
to work on explosion-protected devices in hazardous areas.
ÎReadthespecialinstructionsconcerningexplosionprotection(seesection1.4).
1.2 Notes on possible personal injury
WARNING
!
Crush hazard arising from moving parts on the valve.
Control valves contain moving parts (actuator and plug stem), which can injure hands or
ngersifinsertedintothevalve.
ÎDo not touch any moving valve parts while the control valve is in operation.
ÎBefore performing any mounting or installation work on the positioner, put the control
valve out of operation by disconnecting and locking the supply air and control signal.
ÎDo not impede the movement of the actuator and plug stem by inserting objects into
the yoke.
Incorrect electrical connection will render the explosion protection unsafe.
ÎAdhere to the terminal assignment.
ÎDo not undo the enameled screws in or on the housing.

EB 8384-4 EN 1-5
Safety instructions and measures
Intrinsic safety rendered ineffective in intrinsically safe devices.
Every time the positioner is operated, even not within the plant (e.g. during maintenance,
calibration and work on equipment), it must be ensured that the conditions for intrinsical-
ly safe circuits are observed.
ÎOnly connect intrinsically safe devices intended for use in intrinsically safe circuits to
certiedintrinsicallysafeinput-connectedunits.
ÎDo not place intrinsically safe devices back into operation that were connected to in-
trinsicallysafeinput-connectedunitswithoutcertication.
ÎDonotexceedthemaximumpermissibleelectricvaluesspeciedintheECtypeex-
aminationcerticateswheninterconnectingintrinsicallysafeelectricalequipment(Ui
or U0, lior I0, Pior P0, Cior C0and Lior L0).
1.3 Notes on possible property damage
NOTICE
!
Risk of damage to the positioner due to incorrect mounting position.
ÎDo not mount the positioner with the back of the device facing upward.
ÎDo not seal or restrict the vent opening when the device is installed on site.
Incorrect installation of the lever in positioner versions without a sliding clutch will
damage the travel sensor.
ÎHold the lever in position while removing or mounting it to prevent it from moving to
the end stops.
An incorrect electric signal will damage the positioner.
The positioner is powered over the bus line.
ÎOnly use a voltage source and never a current source.
ÎConnect the electrical wiring to the positioner according to the prescribed terminal
assignment.

1-6 EB 8384-4 EN
Safety instructions and measures
Malfunction due to initialization not yet completed.
The initialization causes the positioner to be calibrated to adapt it to the mounting situa-
tion. After initialization is completed, the positioner is ready for use.
ÎInitializethepositioneronrststart-up.
ÎRe-initialize positioner after changing the mounting position.
Risk of positioner damage due to incorrect grounding of the electric welding equip-
ment.
ÎDo not ground electric welding equipment near to the positioner.
Incorrect cleaning will damage the window.
The window is made of Makrolon®and will be damaged when cleaned with abrasive
cleaning agents or agents containing solvents.
ÎDo not rub the window dry.
ÎDo not use any cleaning agents containing chlorine or alcohol or abrasive cleaning
agents.
ÎUse a non-abrasive, soft cloth for cleaning.

EB 8384-4 EN 1-7
Safety instructions and measures
1.4 Special instructions concerning explosion protection
Explosive dust atmospheres of zone21 or zone22
ÎThefollowingappliestotypeofprotectionExiincombustibledustatmospheres:
– Ifintrinsicsafetyisimpairedbytheinuenceofdust,anenclosurecomplyingwith
Clause6.1.3ofEN60079-11withatleastdegreeofprotectionIP5Xmustbe
used.TherequirementsaccordingtoClause6.1.3applytothecableentriesand
conduit systems accordingly.
– ThedegreeofingressprotectionisveriedbyatestaccordingtoIEC60529and
EN60079-0(e.g.performedbyVDE).
ÎFor use in the presence of combustible dust in compliance with type of protection
ExtbIIIC(protectionbyenclosure),observeclause5.6.3ofEN60079-14.
Equipment for use in zone2/zone22:
ÎInequipmentoperatedaccordingtotypeofprotectionExnA(non-sparkingequip-
ment)accordingtoEN60079-15,circuitsmaybeconnected,interruptedorswitched
while energized only during installation, maintenance or repair.
ÎObserve the special conditions of use mentioned in the statement of conformity for the
rated values and the installation of the series-connected fuse for interconnection of
ExnAcircuits.
ÎPositionerswithtypeofprotectionExnAorExtccanbeusedwithacoverwithor
without window.
ÎTheTypes3730-41,3730-45and3730-48Positionersare100%identicalinde-
sign, except for the marking and the housing cover.
ÎFortypeofprotectionExnA,connecttheVCCconnectionintheprograminterface
adapterinserieswithafuseaccordingtoIEC60127,250VForTwithafuserating
of max. IN≤40mA.
ÎConnectthesignalcurrentcircuitinserieswithafuseaccordingtoIEC60127-2/VI,
250VTwithafuseratingofIN≤63mA.
ÎConnectthetransmittercurrentcircuitinserieswithafuseaccordingtoIEC60127-
2/VI,250VTwithafuseratingofIN≤40mA.
ÎInstall the fuses outside the hazardous area.

1-8 EB 8384-4 EN
Safety instructions and measures
Servicing explosion-protected devices
ÎObserve the following for servicing equipment in a section relevant for explosion pro-
tection:
– Itmustnotbeputbackintooperationuntilaqualiedinspectorhasassessedthe
equipment according to explosion protection requirements, has issued an inspec-
tioncerticateorgiventhedeviceamarkofconformity.Inspectionbyaqualied
inspector is not required if the manufacturer performed a routine test on the de-
vice before putting it back into operation. Document the passing of the routine test
by attaching a mark of conformity to the device.
– Replace explosion-protected components only with original, routine-tested compo-
nents by the manufacturer.
– Devices that have already been used outside hazardous areas and are intended
for future use inside hazardous areas must comply with the safety requirements
placed on serviced devices. They must be subjected to testing according to the
specicationsinEN60079-19.
– EN60079-19appliestoservicingexplosion-protecteddevices.
– Use the protective cable designed by SAMSON when interconnecting non-intrin-
sically safe set point calibrators with intrinsically safe equipment for repair, cali-
bration etc. to ensure that components relevant to explosion protection are not
damaged.

EB 8384-4 EN 2-1
Markings on the device
2 Markings on the device
2.1 Nameplate
Version without explosion
protection
Explosion-protected version
See technical data for
ambient temperature
U = 24 V DC
n
Solenoid valve
Floating contact
Binary input
PROFIBUS PA
Media access according to EN 61158-2
Binary input
5 to 30 V DC
EN 60947-5-6 (NAMUR)
Limit switch, inductive
3730-4
Supply
PROFIBUS Positioner
Firmware
SAMSON AG D-60314 Frankfurt
Made in Germany
Model
Var.-ID Serial no.
Diagnostics
Date
1
2
2
2
2
3
4
5
67
8
9
10
U = 24 V DC
n
Solenoid valve
Floating contact
Binary input
Binary input
5 to 30 V DC
EN 60947-5-6 (NAMUR)
Limit switch, inductive
(FISCO) Field device
Leakage detection
* See technical data and
explosion-protection
certificate for permissible
ambient temperature
and maximum values for
connection to certified
intrinsically safe circuits.
PROFIBUS PA*
Media access according to EN 61158-2
3730-4
Supply
PROFIBUS Positioner
Firmware
SAMSON AG D-60314 Frankfurt
Made in Germany
Model
Var.-ID Serial no.
Diagnostics
Date
1
2
2
2
2
2
3
4
5
67
8
9
11
10
1 Supply pressure
2 Features: Yes/No
−Binary input
5to30VDC
−Binary input
Floating contact
−Leakage detection
−Limit switch, inductive
−Solenoid valve
Nominalvoltage24VDC
3 Diagnostics level
4 Date of manufacture
5 Firmware version
6CongurationID
7 Serial number
8Model number
9 Approvals (CE, EAC, UKCA etc.)
10 Data Matrix code
(electronic nameplate)
11 Explosion protection marking

2-2 EB 8384-4 EN
Markings on the device
2.2 Article code
Positioner Type3730-4 x x x 0 x 0 x x 1 x 0 0 x 0 x x
WithLCDandautotune,PROFIBUS-PA
Explosion protection
Without 0
ATEX II2GExiaIICT6Gb;II2DExiaIIIT80°CDb 1
CSA Ex ia IIC T6, Class I, II, Div. 1, Groups A–G;
Ex nA II T6, Ex nL IIC T6;
Class I, Div. 2, Groups A–D; Class II, Div. 1, Groups E–G
3
FM 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
ATEX II2DExtbIIICT80°CDb 5
ATEX II3GExnAIICT6Gc,II3DExtcIIICT80°CDc 8
Additional equipment
Inductive limit switch Without 0
SJ2-SN (NC contact) 1 0
Solenoid valve Without 0
With,24VDC 4
External position sensor Without 0
With 0 1 0 0
Binary input Without 0
Floating contact 0 1
Diagnostics
EXPERTplus 4
Housing material
Aluminum (standard) 0
Stainlesssteel1.4581 0 1
Special applications
Without 0
Device compatible with paint 1
Exhaustairportwith¼-18NPTthread,backofpositionersealed 0 0 0 0 2
WithadditionalventholeandVDI/VDE3847adapter;withouttravelpick-offparts 6

EB 8384-4 EN 2-3
Markings on the device
Positioner Type3730-4 x x x 0 x 0 x x 1 x 0 0 x 0 x x
Withadditionalventhole 7
Special version
Without 0 0 0
CCC Ex Ex ia IIC T4 ~ T6 Gb 1 0 0 9
CCC Ex Ex ic IIC T4 ~ T6 Gc; Ex nA IIC T4 ~ T6 Gc 80 1 0
IECEx ExiaIICT6…T4Gb;ExiaIICT80°CDb 10 1 2
IECEx ExtbIIICT80°CDb 5034
IECEx ExnAIICT6…T4Gc;ExtcIIICT80°CDc 8 0 1 5
EAC Ex 1ExiaIICT6;ExtbIIICT80°CDbX,IP66 1 0 1 4
TR CMU 1055 II2GExiaIICT6...T4Gb;II2DExiaIIICT80°CDb 1 0 4 3
TR CMU 1055 II2DExtbIIICT80°CDb 5 0 4 4
TR CMU 1055 II3GExicnAIICT6Gc;II3DExtcIIICT80°CDcIP66 8 0 4 5
2.3 Firmware versions
Firmware revisions (Control R)
ControlR1.43 R1.44 to 1.46
Internal revisions
R1.52
Diagnostics All EXPERTplus diagnostic functions are available without having to ac-
tivate them in the positioner (uEB8389onEXPERTplusValveDiagnos-
tics).
Code48extended ThefollowingsubitemshavebeenaddedtoCode48:
h0: Activation/deactivation reference test
h1: Reference test completed (YES/No)
h3: Automatic reset of diagnosis after this time
h4: Remaining time until diagnosis reset
R1.53
Internal revisions

2-4 EB 8384-4 EN
Markings on the device
Firmware revisions (Communication K)
K1.01
Internal revisions
K1.10
The FEATURE_SELECT parameter allows you to set whether an active diagnostic function is to be re-
ported by a GOOD_FUNCTION_CHECK or a BAD_FUNCTION_CHECK (uKH8384-4).
K1.11
• More trigger conditions in the data logger (uKH8384-4).
• More additional functions (FEATURE_SELECT) (uKH8384-4).
• Thelimitsofthediscretevalveposition(POS_D_LIMIT_LOW,POS_D_LIMIT_UP)cannowbedened
as required (uKH8384-4).
K1.12
Resettingtheidenticationparametersresetsalltheparameterssavedinthecontroller.Theparameters
saved in the controller are, however, not reset when just the start-up parameters are reset
(uKH8384-4).
K1.13
Internal revisions
K1.15
FeatureofIDnumberadaptationaccordingtoPROFIBUSPAProle3.02added.Itallowsa
Type3785Positioner(Prole2.0andProle3.0)tobedirectlyreplacedwithaType3730-4Position-
er in the compatibility mode (uKH8384-4).
K1.16
The function to suppress extended diagnostic messages allows messages for the PROFIBUS diagnosis
protocol to be suppressed. The messages are still included in the condensed state according to their
classication.Theparametertosuppressthediagnosticmessagesexistsinthefollowingintegrations:
DD: 2.2.007
TROVIS-VIEW: >3.60.005 (device module)
DTM: 1.3.0.1
K1.17
TheversionsK1.12toK1.16donotsaveasetpointreceivedinacyclicdataexchangeasthevalid
value for the fail-safe action 'Last valid set point is used'. In the affected modules for data exchange,
the polling for a valid set point has been changed to GOOD_NON_SPECIFIC.
K2.00
Partial stroke test (PST) and full stroke test (FST) added
K2.01
Internal revisions
K2.02
Correction of cyclic communication of negative valve positions

EB 8384-4 EN 3-1
Design and principle of operation
3 Design and principle of oper-
ation
ÎSee Fig.3-1
The positioner is mounted on pneumatic con-
trol valves and used to assign the valve posi-
tion(controlledvariablex)tothecontrolsig-
nal(setpointw).Thepositionercompares
the control signal of a control system to the
travel or rotational angle of the control valve
and issues a signal pressure (output vari-
abley)forthepneumaticactuator.
The positioner mainly consists of an electric
travel sensor system, an analog i/p convert-
er with a downstream air booster and the
electronics with the microcontroller.
Whenasystemdeviationoccurs,theactua-
toriseitherventedorlledwithair.Ifneces-
sary, the signal pressure change can be
slowed down by a volume restriction. The
signal pressure supplied to the actuator can
be limited by software or on site to 1.4, 2.4
or3.7bar.
Thexedowregulatorensuresaconstant
airowtotheatmosphere,whichisusedto
ushtheinsideofthepositionerhousingand
to optimize the air booster. The i/p converter
is supplied with a constant upstream pres-
1 Control valve
2 Travel sensor
3 PD controller
4 A/D converter
5 Microcontroller
6 i/p converter
7 Air booster
8Pressure regulator
9 Flow regulator
10 Volumerestriction
11* Inductive limit switch
12* Solenoid valve
13 IEC61158-2interface
module
14 Binary input BI1
(voltage input)
15* Binary input BI2
(foroatingcontact)
16 Display
17* Actuation of solenoid valve
18 Galvanic isolation
19 D/A converter
20 Serial interface
* Option
w
x
Q
%
S
mm
GG
PD
Serial
Interface 16
15
BE2
BE1
11
2
4
13
20
17 18
19
24V DC
5
3
12
6
7
8
10
1
14
9
x
y
Fig.3-1: Block diagram

3-2 EB 8384-4 EN
Design and principle of operation
sure by the pressure regulator to compensate
foranyuctuationsinthesupplypressure.
The positioner communicates and is powered
usingIEC61158-2transmissiontechnology
conformingtoPROFIBUS-PAspecications.
As a standard feature, the positioner comes
with a binary input for DC voltage signals to
signalize process information over the PRO-
FIBUS-PA network.
The extended EXPERTplus diagnostics are in-
tegrated into the positioner. They provide in-
formation on the positioner and generate di-
agnostic and status messages, which allow
faults to be pinpointed quickly.
3.1 Mounting versions
The positioner is suitable for the following
types of attachment using the corresponding
accessories:
−Direct attachment to SAMSON
Type3277Actuator
−Attachment to actuators according to
IEC60534-6:
−AttachmentaccordingtoVDI/
VDE3847-1/-2:
−AttachmenttoType3510Micro-ow
Valve
−Attachment to rotary actuators according
toVDI/VDE3845:
3.2 Additional equipment
Solenoid valve
If the voltage supply for the solenoid valve
(12) fails, the supply pressure for the i/p
converter is vented to the atmosphere. The
positioner can no longer operate and the
control valve moves to the fail-safe position
determined by the actuator, regardless of the
set point.
The manual set point is also reset to 0 % af-
ter the solenoid valve is activated.
A different manual set point must be entered
again (Code 1).
Inductive limit switch
In this version, the rotary shaft of the posi-
tioner carries an adjustable tag which actu-
ates the built-in proximity switch.
External position sensor
In this version, only the sensor is mounted to
the control valve. The positioner is located
separately from the valve. The connection of
x and y signals to the valve is established by
cable and piping for air (only without induc-
tive limit switch).
Binary input BI1
As a standard feature, the positioner comes
with a binary input for DC voltage signals to
signalize process information over the PRO-
FIBUS-PA network.
Binary input BI2
This binary input BI2 is optional. It is an ac-
tive input which is powered by the positioner
toconnectaoatingcontact.Theswitching
stateoftheoatingcontactcanbeindicated
over the PROFIBUS-PA network.
NOTICE
!