Samson TROVIS 3730-3 Service manual

Translation of original instructions
EB 8384-3 EN
Firmware version 1.61
EB 8384-3 EN (1300-1612)
Old design
New design
Type3730-3 Electropneumatic Positioner
with HART®communication
Edition August 2017
EB + CD

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.
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
Department (aftersalesser[email protected]).
The mounting and operating instructions for the devices are included in
the scope of delivery. The latest documentation is available on our website
at www.samson.de > Service & Support > Downloads > Documentation.
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
2 EB 8384-3 EN

Contents
EB 8384-3 EN 3
1 Safety instructions and measures ...................................................................7
1.1 Notes on possible severe personal injury .......................................................11
1.2 Notes on possible personal injury .................................................................11
1.3 Notes on possible property damage..............................................................12
2 Markings on the device ...............................................................................13
2.1 Nameplate..................................................................................................13
2.2 Article code.................................................................................................14
2.3 Firmware versions........................................................................................15
3 Design and principle of operation ................................................................17
3.1 Mounting versions........................................................................................18
3.2 Additional equipment...................................................................................18
3.3 Communication ...........................................................................................20
3.4 CongurationusingtheTROVIS-VIEWsoftware .............................................20
3.5 Device overview and operating controls.........................................................20
3.6 Accessories .................................................................................................21
3.6.1 Travel tables ................................................................................................26
3.7 Technical data .............................................................................................27
3.8 Dimensions in mm........................................................................................33
3.9 FixinglevelsaccordingtoVDI/VDE3845(September2010) ..........................37
4 Measures for preparation............................................................................39
4.1 Unpacking ..................................................................................................39
4.2 Transporting ................................................................................................39
4.3 Storage.......................................................................................................39
5 Mounting and start-up.................................................................................41
5.1 Mounting position........................................................................................41
5.2 Lever and pin position..................................................................................41
5.3 Direct attachment.........................................................................................44
5.3.1 Type3277-5Actuator ..................................................................................44
5.3.2 Type3277Actuator .....................................................................................46
5.4 AttachmentaccordingtoIEC60534-6...........................................................48
5.5 AttachmentaccordingtoVDI/VDE3847-1....................................................50

Contents
4 EB 8384-3 EN
5.6 AttachmentaccordingtoVDI/VDE3847-2....................................................54
5.6.1 Versionforsingle-actingactuator ..................................................................56
5.6.2 Versionfordouble-actingactuator.................................................................58
5.7 AttachmenttoType3510Micro-owValve ....................................................62
5.8 Attachment to rotary actuators ......................................................................62
5.8.1 Heavy-duty version ......................................................................................64
5.9 Reversingamplierfordouble-actingactuators ..............................................68
5.9.1 Reversingamplier(1079-1118or1079-1119) ............................................68
5.10 Attachment of external position sensor...........................................................70
5.10.1 Mounting the position sensor with direct attachment........................................71
5.10.2 MountingthepositionsensorwithattachmentaccordingtoIEC60534-6 .........73
5.10.3 MountingthepositionsensortoType3510Micro-owValve...........................74
5.10.4 Mounting on rotary actuators........................................................................75
5.11 Mounting the leakage sensor ........................................................................76
5.12 Retrottinganinductivelimitswitch ...............................................................77
5.13 Attaching positioners with stainless steel housings...........................................78
5.14 Air purging function for single-acting actuators..............................................78
5.15 Pneumatic connections..................................................................................81
5.15.1 Connecting the supply air.............................................................................81
5.15.2 Signal pressure gauges ................................................................................82
5.15.3 Supply pressure ...........................................................................................82
5.15.4 Signal pressure (output)................................................................................83
5.16 Electrical connections ...................................................................................83
5.16.1 Connecting the electrical power ....................................................................85
5.16.2 SwitchingamplieraccordingtoEN60947-5-6 ............................................86
5.16.3 Establishing communication..........................................................................86
6 Operation...................................................................................................89
6.1 Serial interface ............................................................................................91
6.2 HART®communication .................................................................................92
6.2.1 Dynamic HART®variables ............................................................................92
7 Operating the positioner..............................................................................95
7.1 Determining the fail-safe position ..................................................................96
7.2 Adjusting the volume restriction Q.................................................................96
7.3 Adapting the display direction ......................................................................97

Contents
EB 8384-3 EN 5
7.4 Limiting the signal pressure...........................................................................98
7.5 Checking the operating range of the positioner ..............................................98
7.6 Initialize the positioner ...............................................................................100
7.6.1 MAX – Initialization based on maximum range............................................102
7.6.2 NOM – Initialization based on nominal range .............................................103
7.6.3 MAN – Initialization based on a manually selected range.............................105
7.6.4 SUb – Substitute calibration........................................................................106
7.7 Zero calibration.........................................................................................111
7.8 Adjusting inductive limit switch....................................................................112
7.9 Reset to default settings...............................................................................114
7.10 Enabling and selecting parameters..............................................................115
7.11 Operating modes.......................................................................................116
7.11.1 Automatic and manual modes ....................................................................116
7.11.2 Fail-safe position (SAFE).............................................................................117
8 Servicing...................................................................................................119
8.1 Firmware update........................................................................................119
8.2 Preparation for return shipment...................................................................120
9 Malfunctions .............................................................................................121
9.0.1 Conrmingerrormessages.........................................................................122
9.1 Emergency action ......................................................................................122
10 Decommissioning and removal ..................................................................123
10.1 Decommissioning.......................................................................................123
10.2 Removing the positioner .............................................................................123
10.3 Disposal....................................................................................................123
11 Appendix..................................................................................................125
11.1 After-sales service......................................................................................125
11.2 Certicates ................................................................................................125
11.3 Code list....................................................................................................126
11.4 Error codes................................................................................................136
11.4 Selecting the characteristic..........................................................................144
 Certicates ................................................................................................146

6 EB 8384-3 EN
The functions of the EXPERTplus Valve Diagnostics are described in the Operating
Instructions uEB8389. EB8389 is included on the enclosed CD-ROM and is available
on our website.
Note

EB 8384-3 EN 7
Safety instructions and measures
1 Safety instructions and measures
Intended use
SAMSON'sType3730-3Positionerismountedonpneumaticcontrolvalvesandisusedtoas-
sign the valve position to the control signal. The device is designed to operate under exactly
denedconditions(e.g.operatingpressure,temperature).Therefore,operatorsmustensure
that the positioner is only used in applications where the operating conditions correspond to
the technical data. In case operators intend to use the positioner in other applications or con-
ditionsthan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3730-3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speciedbySAMSON
Qualications of operating personnel
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 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 are to 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.

8 EB 8384-3 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. They 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 level, it must be restricted using a suitable supply pressure reducing station.
Explosion protection
−Explosive dust atmospheres of zone21 or zone22
The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indegreeofprotectionIP5Xmustbeused.
TherequirementsaccordingtoClause6.1.3applytothecableglands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).
For 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.

EB 8384-3 EN 9
Safety instructions and measures
−Servicing explosion-protected devices
If a part of the device on which the explosion protection is based needs to be serviced,
thedevicemustnotbeputbackintooperationuntilaqualiedinspectorhasassessedit
accordingtoexplosionprotectionrequirements,hasissuedaninspection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 device before putting it back into op-
eration. 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 components by
the manufacturer.
Devices that have already been used outside hazardous areas and are intended for fu-
ture use inside hazardous areas must comply with the safety requirements placed on ser-
viced devices. Before being operated inside hazardous areas, test the devices according
tothespecicationsforservicingexplosion-protecteddevices.
EN60079-17appliestoservicingexplosion-protecteddevices.
−Maintenance, calibration and work on equipment
The protective cable designed by SAMSON must be used when interconnecting non-in-
trinsically safe set point calibrators with intrinsically safe equipment for repair, calibra-
tion, etc. to ensure that components relevant to explosion protection are not damaged.
Observethemaximumpermissiblevaluesspeciedinthecerticatesforintrinsicallysafe
circuits.
Responsibilities of the operator
The operator is responsible for proper operation and compliance with the safety regulations.
Operators are obliged to provide these mounting and operating instructions to the operating
personnel and to instruct them in proper operation. Furthermore, the operator must ensure
that operating personnel or third persons are not exposed to any danger.
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.

10 EB 8384-3 EN
Safety instructions and measures
Referenced standards and regulations
ThedevicewithaCEmarkingfulllstherequirementsoftheDirectives2014/30/EUand
2011/65/EUaswellas2014/34/EUdependingontheversion.Thedeclarationsofconfor-
mity are included at the end of these instructions.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
−Operating instructions for valve diagnostics: uEB 8389
−The mounting and operating instructions of the components on which the positioner is
mounted (valve, actuator, valve accessories, etc.).

EB 8384-3 EN 11
Safety instructions and measures
1.1 Notes on possible severe personal injury
DANGER
!
Risk of fatal injury due to the formation of an explosive atmosphere.
Incorrect installation, operation or maintenance of the positioner in potentially explosive
atmospheres may lead to ignition of the atmosphere and cause 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 performed by per-
sonnel who has undergone special training or instructions or who is authorized to
work on explosion-protected devices in hazardous areas.
1.2 Notes on possible personal injury
WARNING
!
Risk of personal injury due to moving parts on the valve.
During initialization of the positioner and during operation, the actuator stem moves
throughitsentiretravelrange.Injurytohandsorngersispossibleiftheyareinserted
into the valve.
ÎDuringinitialization,donotinserthandsorngersintothevalveyokeanddonot
touch any moving valve parts.

12 EB 8384-3 EN
Safety instructions and measures
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.
Risk of malfunction due to incorrect sequence during start-up.
The positioner can only work properly if the mounting and start-up are performed in the
prescribed sequence.
ÎPerformmountingandstart-upasdescribedinsection5.
An incorrect electric signal will damage the positioner.
A current source must be used to provide the electrical power for the positioner.
ÎOnly use a current source and never a voltage source.
Incorrect assignment of the terminals will damage the positioner and will lead to mal-
function.
For the positioner to function properly, the prescribed terminal assignment must be ob-
served.
ÎConnect the electrical wiring to the positioner according to the prescribed terminal
assignment.
Malfunction due to initialization not yet completed.
The initialization causes the positioner to be adapted to the mounting situation. After ini-
tialization is completed, the positioner is ready to use.
ÎInitializethepositionerontherststart-up.
ÎRe-initialize positioner after changing the mounting position.
Risk of positioner damage due to incorrect grounding of the electric welding
equipment.
ÎDo not ground electric welding equipment near to the positioner.

EB 8384-3 EN 13
Markings on the device
2 Markings on the device
2.1 Nameplate
1 Supply pressure
2 Type of protection for explosion-protected devices
3 Input signal
4 Features: Yes/No
−Fault indicator
−Position indicator
−Analog input signal x
−Binary input
−Leakage detection
−Limit switch, inductive
−Limit switches, software
−Solenoid valve
Explosion-protected version Version without explosion protection
SAMSON 3730 - 3
HART® capable Positioner
Supply
Input
Diagnostics EXPERTplus
Firmware
Model 3730 - 3
Var.-ID Serial no.
SAMSON AG D-60314 Frankfurt Made in Germany
* See technical data and explosion-protection
certificate for permissible ambient temperature
and maximum values for connection to
certified intrinsically safe circuits.
1
SAMSON 3730 - 3
HART
®
capable Positioner
Supply
Input
Diagnostics EXPERTplus
Firmware
Model 3730 - 3
Var.-ID Serial no.
SAMSON AG D-60314 Frankfurt Made in Germany
See technical data for ambient temperature
1
3
2
5
5
6
6
7
7
8
8
99
2
44
5Firmwareversion(seesection2.3)
6 Model no.
7CongurationID
8 Serial number
9 Compliance

14 EB 8384-3 EN
Markings on the device
2.2 Article code
Positioner Type3730-3 x x x x x x x x 0 x 0 0 x 0 x x
Withdisplayandautotune,HART®communication,4to20mAsetpoint,two
software limit switches, one fault alarm contact
Explosion protection
Without 0
ATEX II 2 G Ex ia IIC Gb; II 2 D Ex ia IIIC T80°C Db 1
CSA ExiaIICT6;ClassI,Zone0;ClassI,GroupsA,B,C,D;
Class II, Groups E, F, G;
Class I, Zone 2; Class I, Div.2, Groups A, B, C, D;
Class II, Div.2, Groups E, F, G
3
FM 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, III. Div. 2, Groups F, G
ATEX II 2 D Ex tb IIIC T80°C Db 5
ATEX II 3G Ex nA II T6 Gc, II 3D Ex tc IIIC T80°C Db 8
Option (additional equipment)
Inductive limit switch
Without 0
SJ2-SN (NC contact) 1
Solenoid valve
Without 0
With,24VDC 4
Position transmitter
Without 0
With 1000
External position sensor
Without 0
With 0 1 0
Prepared connection 0 2
Analog input x 0 0 0 3 0 0
Leakage sensor
Without 0
With 0010
Binary input
Without 0
With 0002
Diagnostics
EXPERTplus 4
Housing material
Aluminum (standard) 0
Stainless steel 1.4408 0 1

EB 8384-3 EN 15
Markings on the device
Positioner Type3730-3 x x x x x x x x 0 x 0 0 x 0 x x
Special application
Without 0
Device completely free of paint-impairing substances 1
Exhaust air with ¼ NPT connection, back of housing sealed 2
AttachmentaccordingtoVDI/VDE3847includinginterface 6
AttachmentaccordingtoVDI/VDE3847preparedforinterface 7
Special version
Without 0 0
IECEx Ex ia IIC T6...T4 Gb; Ex ia IIIC T80°C Db 1 1 2
Ex tb IIIC T80°C Db 5 3 4
Ex nA IIC T6 Gc, Ex tc IIIC T80°C Dc 8 1 3
EAC Ex On request 1 1 4
8 2 0
2.3 Firmware versions
Firmware revisions
Old New
1.01 1.10
The HART®protocol as per HART®specicationrevision5issupportedbydefault.The
HART®protocolcanbechangedtorevision6inTROVIS-VIEW.
The following status messages have been added:
• Code76–Noemergencymode
• Code77–Programloaderror
Reading indicates the number of zero calibrations performed since the last initialization.
Forinitializationof"AIRTOCLOSE"actuators,thedirectionofaction(Code7)isauto-
maticallysettoincreasing/decreasing.
Code3,theactivationperiodoftheenabledcongurationfunctionhasbeenextendedto
120s.
1.10 1.20
Electronics changed, no new functions added.
1.20 1.30
New EXPERTplus diagnostics functions (Code 48) added.
Positioner in EXPERTplus version with extended diagnostics features.
An initialization procedure in progress can be canceled by pressing the rotary pushbut-
ton.
The position transmitter (Code 37) and solenoid valve(Code45)optionsareautomati-
cally detected.

16 EB 8384-3 EN
Markings on the device
Firmware revisions
Old New
1.30 1.40
All EXPERTplus functions can be used over HART®communicationinthisrmwarever-
sion and higher.
The fault alarm contact is triggered by the condensed state of the positioner.
It is always active with 'Maintenance alarm' condensed state.
• WhenCode32=YES:alsoactivewith'Functioncheck'condensedstate
• WhenCode33=YES:alsoactivewith'Maintenancerequired/Maintenancede-
manded' condensed state
The "Function check" condensed state is additionally set for Test A1, A2, fault alarm out-
put and position transmitter.
Themin./max.valuesofthetemperaturemonitoringcanbereset.
1.40 1.41
Internal revisions
1.41 1.42
Internal revisions
1.42 1.51
All EXPERTplus diagnostic functions are available without having to activate them in the
positioner (uEB8389onEXPERTplusValveDiagnostics).
Optional binary input with following actions:
• Transmit switching state
• Activate local write protection
• Switch between automatic and manual modes
• VariousdiagnosticfunctionsuEB8389(EXPERTplusvalvediagnostics)
Thepressurelimit(Code16)isnolongerautomaticallysetduringinitialization.
1.51 1.54
Internal revisions
1.54 1.55
Analog input x option to connect commercially available position sensors with a 4 to
20mAsignal
Code4:thesettingfor300mm has been added to the pin position
1.55 1.56
Internal revisions
1.56 1.61
Additional function: the step response test can be started by a rising edge at the binary
input (uEB8389onEXPERTplusvalvediagnostics).

EB 8384-3 EN 17
Design and principle of operation
3 Design and principle of oper-
ation
ÎRefertoFig.1
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(setpointw).The
electric signal from a controlling system is
compared to the travel or the rotational angle
of the control valve and a signal pressure
(output variable y) is produced for the actua-
tor.
The positioner consists of a travel sensor sys-
tem (2) proportional to resistance, an analog
i/pconverterwithadownstreamaircapacity
booster (7) and the electronics with microcon-
troller (5).
Thepositioneristtedwiththreebinarycon-
tacts as standard: A fault alarm output indi-
cates a fault to the control room and two con-
gurablesoftwarelimitswitchesareusedto
indicate the end positions of the valve.
1 Control valve
2 Travel sensor
3 PD controller
4A/Dconverter
5 Microcontroller
6i/pconverter
7 Air capacity booster
8 Pressure regulator
9 Flow regulator
10 Volumerestriction
11* Inductive limit switch
12* Solenoid valve
13* Analog position transmitter
14 Software limit switch, alarm
1/2
15 Fault alarm output, alarm 3
16 Display
17* Actuation of solenoid valve
18* Electrical insulation
19 D/Aconverter
20 Communication interface
21 HART®connection
22 Binary input BE*
* Option
w
x
Q
%
S
mm
GG
PD
Serial
Interface 16
13
22
15
A2
A3
BE
A1
11
2
4
21 FSK
20
19
5
3
12
6
7
810 1
14
14
w
x
y
24 V DC
9
17 18
Fig.1: Block diagram

18 EB 8384-3 EN
Design and principle of operation
The valve position is transmitted as a either
an angle of rotation or travel to the pick-up
lever and to the travel sensor (2) and supplied
toananalogPDcontroller.AnA/Dconverter
(4) transmits the position of the valve to the
microcontroller (5). The PD controller com-
paresthisactualpositiontothe4to20mA
DC control signal (reference variable) after it
hasbeenconvertedbytheA/Dconverter(4).
In case of a set point deviation, the activation
ofthei/pconverter(6)ischangedsothatthe
actuator of the control valve (1) is pressurized
or vented accordingly over the downstream
booster (7). As a result, the closure member
of the valve (e.g. plug) is moved to the posi-
tion determined by the set point.
The supply air is supplied to the booster (7)
and the pressure regulator (8). An intermedi-
ate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 supplied
by the booster can be limited by software.
The volume restriction Q (10) is used to opti-
mize the positioner.
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(seesection3.6):
−Direct attachment to SAMSON
Type3277 Actuator
ÎSeesection5.3.
−Attachment to actuators according to
IEC60534-6:
ÎSeesection5.4.
−Attachment according to VDI/
VDE3847-1/-2:
ÎSeesection5.5andsection5.6.
−Attachment to Type3510 Micro-ow
Valve
ÎSeesection5.7.
−Attachment to rotary actuators accord-
ing to VDI/VDE3845:
ÎSeesection5.8.
3.2 Additional equipment
Solenoid valve
If the operating voltage for the solenoid
valve (12) fails, the signal pressure for the
booster is vented to the atmosphere. As a re-
sult, the actuator is vented and the valve
moves to its fail-safe position.
The manual set point is automatically reset to
0% after the solenoid valve is activated.
A different manual set point must be entered
again (Code 1).
Position transmitter
The position transmitter (13) is a two-wire
transmitter and issues the travel sensor signal
NOTICE
!

EB 8384-3 EN 19
Design and principle of operation
asa4to20mAsignalprocessedbythemi-
crocontroller.
Since this signal is issued independent of the
positioner’s input signal (minimum current
3.8mA),themomentarytravel/angleofro-
tation is controlled in real-time. Additionally,
the position transmitter allows positioner
faults to be indicated over a signal current of
<2.4mAor>21.6mA.
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. The option-
al inductive switch (11) is connected to A1,
while the remaining software limit switch is
connected to A2.
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).
Analog input x
The analog input x option allows commer-
cially available external linear or angle posi-
tionsensorsthatusea4to20mAsignalto
be connected to the positioner. The analog
input x is protected against reverse polarity
andoverloadupto24VAC/DC.Theposi-
tioner switches to open-loop operation (no
closed-loop operation) as soon as the input
signalfallsbelow2.5mA.
Leakage sensor
By upgrading the positioner with a leakage
sensor, it is possible to detect seat leakage
when the valve is in the closed position.
Binary input
Positionerscanbeoptionallyttedwithabi-
nary input. The following actions can be trig-
gered by changing the edge state:
−Transmit switching state [default]
The switching state of the binary input is
logged.
−Set on-site operation write protection
Whilethebinaryinputisactive,noset-
tings can be changed at the positioner.
EnablingcongurationoverCode3is
not active.
−Switch between AUTO/MAN
The positioner changes from the auto-
matic mode (AUTO) to the manual
mode (MAN) or vice versa.
This function is not performed if the posi-
tioner is in the fail-safe position mode
(SAFE).
−VariousdiagnosticfunctionsuEB8389
(EXPERTplus valve diagnostics)
−The optional binary input can only be con-
gured using the TROVIS-VIEW software
and using the DD parameters (uEB8389
on EXPERTplus valve diagnostics).
−The default switching state is with an open
switch.
Note

20 EB 8384-3 EN
Design and principle of operation
3.3 Communication
The positioner is equipped with an interface
for HART®protocol (Highway Addressable
Remote Transducer) for communication
purposes. Data are transmitted in a
superimposedfrequency(FSK=Frequency
Shift Keying) on the existing signal loop for
the4to20mAsetpoint.
Either a HART®capable handheld communi-
cator or a computer with FSK modem can be
used to establish communication and oper-
ate the positioner.
The HART®device revision as well as the in-
dicating and operating modules supported
by the Type3730-3 Positioner can be found
on the SAMSON website (uwww.samson.
de > SERVICE & SUPPORT > Downloads >
Device integration > 3730-3 > 'Device Revi-
sion' to 'Firmware' assignment).
3.4 Conguration using the
TROVIS-VIEW software
Thepositionercanbeconguredwith
SAMSON'sTROVIS-VIEWSoftware.
The positioner has for this purpose a serial
interface to allow the RS-232 or USB port of
a computer to be connected to it using an
adapter cable.
TheTROVIS-VIEWsoftwareenablestheuser
toeasilycongurethepositioneraswellas
view process parameters online.
TROVIS-VIEW provides a uniform user
interface that allows users to congure and
parameterize various SAMSON devices
using device-specic database modules. The
device module 3730-3 can be downloaded
free of charge from our website at uwww.
samson.de > SERVICE & SUPPORT >
Downloads > TROVIS-VIEW.
Further information on TROVIS-VIEW (e.g.
system requirements) is available on our
website and in the Data Sheet uT6661.
3.5 Device overview and oper-
ating controls
ÎSeesection6.
Note
Note