Samson 3738-50 Service manual

Mounting and
Operating Instructions
EB 8390-5 EN
Firmware version A 1.01 / K 1.01
Edition August 2016
Type 3738-50 Electronic Limit Switch
with optional integrated solenoid valve
for valves used in on/off applications
FOUNDATION™ eldbus communication

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 8390-5 EN

Contents
EB 8390-5 EN 3
1 Important safety instructions ..........................................................................6
2 Article code...................................................................................................7
3 Design and principle of operation ..................................................................8
3.1 Versions ........................................................................................................8
3.2 Communication using TROVIS-VIEW .............................................................10
3.3 FOUNDATION™eldbuscommunication......................................................10
3.3.1 FOUNDATION™eldbusblockmodel ..........................................................10
3.4 Safety-related information ............................................................................11
4 Technical data .............................................................................................12
4.1 Electronic limit switch ...................................................................................12
4.2 Solenoid valve .............................................................................................14
4.3 Forced venting option...................................................................................14
5 Attachment .................................................................................................15
5.1 Accessories .................................................................................................16
5.2 Attachment to linear actuators.......................................................................17
5.2.1 Preparations ................................................................................................17
5.2.2 Attachment..................................................................................................18
5.3 Attachment to rotary actuators ......................................................................20
5.3.1 Preparations ................................................................................................21
5.3.2 Attachment..................................................................................................22
6 Connections ................................................................................................26
6.1 Pneumatic connections..................................................................................26
6.2 Supply pressure ...........................................................................................27
6.3 Electrical connection.....................................................................................27
7 Operator controls and readings ...................................................................30
7.1 Rotarypushbutton........................................................................................30
7.2 SAMSON SSP interface................................................................................30
7.3 Local operation............................................................................................30
8 Start-up ......................................................................................................33
8.1 Adapting the display direction ......................................................................33
8.2 Verifying readings on display........................................................................33

4 EB 8390-5 EN
Contents
8.3 Determining the actuator type .......................................................................34
8.4 Determining the direction of action................................................................35
8.5 Adjusting the end positions...........................................................................35
8.6 Initialization ................................................................................................36
8.6.1 Start automatic initialization .........................................................................37
8.6.2 Start manual initialization.............................................................................37
8.7 Replacing an electronic limit switch................................................................39
8.8 Zero/endpositioncalibration .......................................................................39
8.9 Reset to default settings.................................................................................40
9 Operation...................................................................................................40
9.1 Lockoperation.............................................................................................40
9.1.1 LockingoperationoverFOUNDATION™eldbus...........................................40
9.1.2 Locklocaloperation .....................................................................................41
9.2 Partialstroketest(PST)..................................................................................41
9.2.1 DeningthePSTtargetrange........................................................................43
9.2.2 Startingthepartialstroketest........................................................................43
9.2.3 CongurationexamplebasedonPTOdirectionofaction ................................44
9.3 Testing the solenoid valve..............................................................................47
9.4 Fault ...........................................................................................................47
9.4.1 Status messages...........................................................................................47
9.4.2 Error messages ............................................................................................48
9.4.3 Conrmingstatusanderrormessages ...........................................................48
10 Maintenance, calibration and work on equipment ........................................48
10.1 Maintenance ...............................................................................................48
11 Servicing explosion-protected devices ..........................................................49
12 Firmware update (serial interface)................................................................49
13 Parameter list..............................................................................................50
13.1 Status messages...........................................................................................54
13.2 Error messages ............................................................................................56
14 Dimensions in mm.......................................................................................58
Assignment based on the direction of action .................................................................71

6 EB 8390-5 EN
Important safety instructions
1 Important safety instructions
For your own safety, follow these instructions concerning the mounting, start up and opera-
tion of the electronic limit switch:
−Thedevice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devicearetobeoperatedonlybypersonnelwhohas
undergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplosion-pro-
tected devices in hazardous areas.
−Anyhazardsthatcouldbecausedbymovingpartsaretobepreventedbymeansofthe
appropriate measures.
−Forusewithinhazardousareas,theSpecialConditionsmentionedintheECtypeexami-
nationcerticateanditsaddendamustbeobserved.
−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 electronic limit switch.
Note:
The device with a CE marking fullls the requirements of the Directive 2004/108/EC.


EB 8390-5 EN 7
Article code
2 Article code
Electronic Limit Switch Type 3738-50- xxxxx0 0 x1x0 0 x0
With LCD
Explosionprotection
Without 0 0 0
II2GExiaIICT6;II2DExiaIIICT80°CIP66 110
II2GExeb[ia]IICT4;II2DExtbIIICT80°CIP66 310
II3GExicIICT4;II3GExnAIIT4Gc;II3DExtcIIICT80°CIP66 810
Solenoid valve
External,bus-powered 0
Integrated,bus-powered 4
Options
Without 0
Forced venting 1
Company version
SAMSON 0
AIR TORQUE 1
Cover
Graybeige 0 0
Black 0 1
Silver gray 1 3
Special applications
Without 0
Versioncompatiblewithpaint 1
Special version
Without 0

8 EB 8390-5 EN
Design and principle of operation
3 Design and principle of oper-
ation
TheType3738-50ElectronicLimitSwitchal-
lowson/offvalvestobeactuatedbyaninte-
gratedorexternalsolenoidvalveaswellas
theirdiscreteendpositionstobereadoutby
a FOUNDATION™eldbusnetworkaccording
toIEC61158-2.
Major features of the electronic limit switch
include:
−PowersuppliedbyaFOUNDATION™eld-
busnetwork(solenoidvalvewithlowener-
gyconsumptionof6VDC)
−Simple discrete control of on/off valves
over a FOUNDATION™eldbusnetwork
−Integrateddiagnosticswithpartialstroke
testing(PST)
−Non-contact sensing of the rotation angle
byamagnetoresistivesensorsystem
−Version with integrated solenoid valve or
forexternalsolenoidvalve
Fig.1
The electronic limit switch is designed for at-
tachment to pneumatic actuators. The current
valve position is measured without contact
usingamagnet(onascrew)positionedcen-
trically on the actuator shaft. The screw with
magnetdoesnotneedtobeadjusted.The
AMR(anisotropicmagnetoresistive)sensor
located in the device together with the mea-
suringelectronics(1)candetectthedirec-
tionalchangeoftheappliedmagneticeld
and, as a result, sense the movement of the
actuator.
Thepneumaticactuatorisoperatedbyaso-
lenoidvalve(6,8)whichconvertsthesignal
issuedbytheprocesscontrolsystemintoa
binarypressuresignal.
3.1 Versions
Version with integrated solenoid valve
(Type 3738-50-xxx4x00x1x00x0)
The solenoid valve is integrated into the
housing of the electronic limit switch. The
electronic limit switch and the solenoid valve
arepoweredbytheconnectedFOUNDA-
TION™eldbustwo-wirecableaccordingto
IEC61158-2.
Theelectroniclimitswitchcanoptionallybe
ttedwithaforced venting function. This
function is activated when the solenoid valve
is de-energized after the power supply is in-
terrupted, causing the actuator to move the
control valve to its fail-safe position.
Version for external solenoid valve
(Type 3738-50-xxx0x00x1x00x0)
Theelectroniclimitswitchandtheexternal
solenoidvalvearepoweredbytheconnect-
ed FOUNDATION™eldbustwo-wirecable
accordingtoIEC61158-2.
Theelectroniclimitswitchcanoptionallybe
ttedwithaforced venting function. This
function is activated when the solenoid valve
is de-energized after the power supply is in-
terrupted, causing the actuator to move the
control valve to its fail-safe position.

EB 8390-5 EN 9
Design and principle of operation
T
SSP
interface
11 10
3FOUNDATION™
fieldbus
IEC 61158-2
2
5
8*
1
912
4
Signal for forced venting*
6
7
Electronic
limit switch
A
ctuator
1 AMR sensor with electronics
2 A/D converter
3 Microcontroller
4 Interfacemodule(IEC61158-2)
5 Actuation of forced venting
6 Solenoid valve
 (Type3738-50-xxx4x00x1x00x0)
 7 Aircapacitybooster
 (Type 3738-50-xxx4x00x1x00x0 )
 8*Externalsolenoidvalve
 (Type 3738-50-xxx0x00x1x00x0 )
9 Electrical isolation
10 Display
11 Rotarypushbutton
12 Temperature sensor
* Optional
Fig.1: Schematic diagram – Type 3738-50 Electronic Limit Switch

10 EB 8390-5 EN
Design and principle of operation
3.2 Communication using
TROVIS-VIEW
SeeTable2onpage16forordernum-
bers.
Theelectroniclimitswitchcanbecongured
withSAMSON'sTROVIS-VIEWCongura-
tion and Operator Interface. The electronic
limit switch has for this purpose a SAMSON
SSP interface to allow the RS-232 or USB
portofacomputertobeconnectedtoitover
aserialinterfaceadaptercable.
TheTROVIS-VIEWsoftwareenablestheuser
toeasilyconguretheelectroniclimitswitch
as well as view and document process pa-
rameters on a computer. See Data Sheet
uT6661.
3.3 FOUNDATION™ eldbus
communication
The electronic limit switch is controlled com-
pletelybydigitalsignaltransmissionaccord-
ing to FOUNDATION™eldbusspecication.
Dataaretransmittedoverthebususingdigi-
tal,bit-synchronousManchestercodingata
baudrateof31.25kbit/sovertwisted-pair
wiresaccordingtoIEC61158-2.
Note:
If complex functions are started in the
electronic limit switch, which require
a long calculation time or lead to a
large quantity of data being saved in
the volatile memory of the electronic
limit switch, the alert 'busy' is issued
over the DD. This alert is not an error
message and can be simply con-
rmed.
3.3.1 FOUNDATION™
eldbus block model
All the functions and data of the electronic
limitswitchareassignedtovariousblock
types in FOUNDATION™eldbus.Eachblock
typecoversadifferentrangeoftasks.Inthe
SAMSONType3738-50ElectronicLimit
Switch,thefollowingblocktypesareimple-
mented:
Resource Block (RES)
TheResourceBlock(RES)describescharac-
teristicsoftheeldbusdevice,suchasthe
devicename,manufacturernumberandse-
rialnumber.ThereisonlyoneResource
Blockinadevice.
Function Blocks (FB)
FunctionBlocksareresponsiblefortheway
aeldbusdeviceworks.Aeldbusapplica-
tioncanbeconguredbylinkingtheinput
andoutputparametersofFunctionBlocks.
The Type 3738-50 Electronic Limit Switch in-
cludesthefollowingFunctionBlocks:
5xDiscreteInputFunctionBlocks(DIFB);
executiontime:20ms
5xDiscreteOutputFunctionBlocks(DOFB);
executiontime:30ms
1xAnalogInputFunctionBlock(AIFB)
analogpositionfeedback;execution
time: 20 ms


EB 8390-5 EN 11
Design and principle of operation
Transducer Blocks (TRD)
EachAIorAOFunctionBlockhasaTrans-
ducerBlockwhichcontainsalldataandde-
vice-specicparameterstolinkthedeviceto
theprocessvalue(sensorornalcontrolele-
ment).
ThefollowingTransducerBlocks(correspond-
ingtotheFunctionBlocks)areimplemented:
5x DiscreteInputTransducerBlocks(DITRD)
5x
DiscreteOutputTransducerBlocks(DO
TRD)
1x AnalogInputTransducerBlock(AITRD)
Note:
The parameter of the individual func-
tion blocks are described in the Con-
guration Manual KH8390-5.
3.4 Safety-related information
The Type 3738-50 Electronic Limit Switch
was developed to meet the requirements stip-
ulated in IEC 61508. The safety-related data
are listed in the Manufacturer’s Declaration
HE1258.
Safety-related assumptions
Emergency venting
When the optional forced venting function is
used,aninterruptedvoltagesignal(24V)at
terminals87/88causesthebus-poweredin-
tegratedorexternalsolenoidvalvetobede-
energized, venting the mounted actuator. The
functionissuitablefortheuseinsafety-in-
strumentedsystemsaccordingtoIEC61508.

The emergency venting function is not affect-
edbythesoftwareortheselecteddevicepa-
rameters.
Requirements
−Short mean time to repair compared to
the average rate of demand
−Normalexposuretoindustrialenviron-
mentanduids
−Theuserisresponsibleforensuringthat
the device is used as intended.
Useful lifetime
AccordingtoIEC61508-2,section7.4.9.5,
ausefullifetimeof8to12yearscanbeas-
sumed.Othervaluescanbeusedbasedon
theuser’sexperience.
Notes concerning diagnostics
−Diagnostics are performed cyclically in-
sidethedevice.Criticalerrors(deviceer-
rorE9)aretransferredbyaDiscreteIn-
putFunctionBlockovertheFOUNDA-
TION™eldbusnetwork.Existingerrors
mustberemediedasdescribedinthese
Mounting and Operating Instructions. If
thisisnotpossible,theelectroniclimit
switchmustnotbeusedinsafetyloops.
−The proper functioning of the display
canbeveriedoverP3parameter.Refer
to section 8.2.
−The correct setting of all parameters must
beveriedbeforeeverystart-up.
Proof testing
Theforcedventingofthesolenoidvalve(ter-
minals87/88)needtobeactivatedforthe
proof test. The correct switching of the sole-

12 EB 8390-5 EN
Technical data
noid valve and the venting of the actuator
mustbemonitoredandconrmed.
Intended use
Thespecicationsandinformationintheda-
tasheetandintheseinstructionsmustbeob-
served.
Note concerning diagnosis of connected so-
lenoid valve and actuator
The diagnostics functions performed in the
device, e.g. actuator transit time monitoring,
aresuitablefordiagnosisofconnectedde-
vices, such as solenoid valve, pneumatic ac-
tuator and valve.
Repairs
Devices which are used in safety-instrument-
edsystemsmustberepairedbythemanu-
facturer.
4 Technical data
4.1 Electronic limit switch
Type 3738-50-xxx4x00x1x00x0 3738-50-xxx0x00x1x00x0
Version With integrated solenoid valve Forexternalsolenoidvalve
Permissiblerangeofrotation Min.:0to30°Max.:0to170°
Commu-
nication
Local SAMSON SSP interface with serial interface adapter with TROVIS-
VIEWwithdatabasemodule3738-50
Overbus FOUNDATION™eldbus
Supply
air
Supply presure 2.4to8bar Sameasspecicationsofthesole-
noid valve manufacturer
Air quality Acc. to ISO 8573-1 edition
2004
Max.particlesizeanddensity:
Class 4
Oil content: Class 3
Pressure dew point: Class 3 or
atleast10Kbelowthelowest
ambienttemperaturetobe
expected
Sameasspecicationsofthesole-
noid valve manufacturer
Air consumption In neutral position: <60 l/h
In switching position: <30 l/h
Electric power supply PoweredbyFOUNDATION™eldbus

EB 8390-5 EN 13
Technical data
Type 3738-50-xxx4x00x1x00x0 3738-50-xxx0x00x1x00x0
Version With integrated solenoid valve Forexternalsolenoidvalve
Maximumoperatingcurrent 14 mA
Permissibleambient
temperature
–25to80°C –40to80°C
Metalcableglandsmustbeusedforambienttemperaturesbelow
–20°C.
Thelimitsspeciedintheexaminationcerticateadditionallyapply.
Inuenc-
es
Temperature ±0.7%/90°angleabovethepermissibletemperaturerange
Inuenceof
vibrations 0.25 % up to 2500 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 Recommendation NE 21
Electrical connections M20x1.5cablegland(s)for6to12mmclampingrange,screw
terminalsfor0.2to2.5mm²wirecross-sections
*Without forced venting
*With forced venting
Onecablegland
Twocableglands
Twocableglands
Threecableglands
Materi-
als
Housing Die-castaluminumENAC-AlSi12(Fe)(ENAC-44300)acc.to
DINEN1706,powderpaintcoated
Housing cover PC
Covergasket PU
Indicator wheel PC
Magnet material Hard ferrite
Weight Approx.1.2kg Approx.1.0kg

14 EB 8390-5 EN
Technical data
Table1: Explosion protection certicates for Type 3738-20 Electronic Limit Switch
Type Certication Type of protection
3738-50
-110
EC type
examination
certicate
Number PTB08ATEX2039X II2GExiaIICT6;
II2DExiaIIICT80°CIP66
Date 2012-02-02
-113
Number
RU
C-DE.08.B.00114 1ExiaIICT6/T5/T4GaX;
ExtbIIICT80°CDbXDate 2013-11-15
Valid until 2018-11-14
-310
EC type
examination
certicate
Number PTB08ATEX2039X II2GExeb[ia]IICT4;
II2DExtbIIICT80°CIP66
Date 2012-02-02
-313
Number
RU
C-DE.08.B.00114 1Exe[ia]IICT4GbX;
ExtbIIICT80°CDbXDate 2013-11-15
Valid until 2018-11-14
-810
EC type
examination
certicate
Number PTB08ATEX2039X II3GExicIICT4;
II3GExnAIIT4Gc;
II3DExtcIIICT80°CIP66
Date 2012-02-02
4.2 Solenoid valve
Integrated solenoid valve (Type 3738-50-xxx4x00x1x00x0)
Version 3/2-way or 5/2-way function
Functiondeterminedbythepositionofthemoldedseal
KVS coefcient 0.32
Service life 1,000,000 switching cycles
Temperaturerange(operation) –25to+80°C
External solenoid valve (Type 3738-50-xxx0x00x1x00x0)
Readmanufacturer’sspecications!
6VDC,max.18mW
4.3 Forced venting option
Input 0to30VDCreversepolarityprotection·Staticdestructionlimit40V
Powerconsumption3.5mAat24Vwithgalvanicisolation
Signal Signal ‘1’ at Ue>5V·Signal‘0’atUe<3V

EB 8390-5 EN 15
Attachment
5 Attachment
DANGER!
−Electrostatic charging
Due to the high surface resistance
of the housing cover (RIsol.≥
109Ω), installation and mainte-
nance on the equipment must be
performed in such a way that elec-
trostatic charging cannot occur.
−Mechanical effects
In areas where damage to the
housing can be expected due to
mechanical inuences, the housing
must be protected by an additional
cover.
−Combustible dust atmospheres
The electronic limit switch complies
with the requirements for type of
protection Ex tb as the enclosure
(housing) is designed according to
EN60079-31. The housing has the
degree of protection IP66 accord-
ing to IEC60529.
WARNING!
Mount the electronic limit switch,
keeping the following sequence:
−Mount the electronic limit switch on
the actuator. Refer to section 5.2
and 5.3.
−Connect the supply air. Refer to
section 6.1 and 6.2.
−Connect the electrical power. Refer
to section 6.3.
−Perform the start-up settings. Refer
to section 8.
NOTICE
Observe the following instructions to
avoid damaging the electronic limit
switch:
−Use only the accessories listed in
Table2 to mount the electronic limit
switch.
−Observe the shaft height of the ac-
tuator on mounting the electronic
limit switch on rotary actuators.
Mounting position
Anymountingpositionmaybeused,howev-
er,theelectroniclimitswitchmustnotbein-
stalled in a suspended position.

16 EB 8390-5 EN
Attachment
5.1 Accessories
Table2: Accessories
Order no.
Attachment to linear
actuators (NAMUR
attachment)
Version with integrated solenoid valve G ¼
Version with integrated solenoid valve ¼ NPT
1402-0540
1402-0541
Versionforexternalsolenoidvalve G¼
Versionforexternalsolenoidvalve ¼NPT
1402-0542
1402-0543
Plus mounting parts for Type 3271 Actuator
Versionupto700cm²
1400-60 and 2800-120 versions
2800-30 and 2800-60 versions
–
1402-0544
1402-0545
Attachment to rotary
actuators acc. to VDI/
VDE3845, xing level 1
(2010)
Attachment(20mmshaftheight)
Attachment(30mmshaftheight)
Attachment(50mmshaftheight)
Attachment(50mmshaftheight,88mmshaftdiame-
ter),e.g.AIRTORQUETypeSC3000orPfeifferType
31b,size2000
Attachment(80mmshaftheight)
1400-9859
1400-9860
1400-9861
1402-0332
1402-0586
Mountingplatform(black) G¼
Mountingplatform(black) ¼NPT
1380-1266
1380-1268
Mounting platform with piping as required G ¼
Mounting platform with piping as required ¼ NPT
1380-1738
1380-1739
TROVIS-VIEW Conguration
and Operator Interface soft-
ware
TROVIS-VIEWwithdevicemodule3738-50(freedownloadfrom
www.samson.de)
Serialinterfaceadapter(SAMSONSSPinterfaceto
RS-232portonaPC) 1400-7700
IsolatedUSBinterfaceadapter(SAMSONSSPinterface
toUSBportonaPC) 1400-9740

EB 8390-5 EN 17
Attachment
5.2 Attachment to linear actua-
tors
The electronic limit switch is mounted to lin-
earactuatorsaccordingtoIEC60534-6
(NAMURattachment).
Required accessories: seeTable2
5.2.1 Preparations
Version with integrated solenoid valve
(Type 3738-50-xxx4x00x1x00x0) (Fig.2)
1. Insertthemoldedseal(3)intothemount-
ingunit(2)dependingonthetypeofac-
tuator(single-actingordouble-acting).
2. PushtheO-ring(3.1)ontotheairductof
themoldedseal(3).
3. Fastentheelectroniclimitswitch(1)to
themountingunit(2)usingthetwo
screws mounted on the electronic limit
switchasshowninFig.2.
4. Removetheblankingplugonthesupply
airport(SUPPLY,2.1)ofthemounting
unit(2).
Version with external solenoid valve
(Type 3738-50-xxx0x00x1x00x0)
1. Fastentheelectroniclimitswitch(1)to
themountingunit(2)usingthetwo
screws mounted on the electronic limit
switchasshowninFig.2.
Single-acting
3/2-way
Double-
acting
5/2-way
1
2
2.1
3.1 3
1 Electronic limit switch
2 Mounting unit
2.1 Supply air port
3 Molded seal
3.1 O-ring
Y1 Output signal pressure
Y2 Opposing signal pressure
Fig.2: Preparations for mounting the electronic limit switch with integrated solenoid valve

18 EB 8390-5 EN
Attachment
5.2.2 Attachment
Usethelever(5)underneaththemounting
unit(2)andthepin(6)onthelevertoadapt
the electronic limit switch to the linear actua-
tor.
Table3: Travel table
Actuator
size [cm²]
Rated
travel
[mm]
Lever Recommended
pin position
120 to 350 15 M 35
700 15/30 M 50
1400 60 L 100
2800 120 XL 200
2800 30 M 50
2800 60 L/XL 100/200
The electronic limit switch is equipped with
theleverM(pinposition35)asstandard.
LeversLandXLareincludedinthemounting
parts 1402-0544 or 1402-0545.
1. Selectlever(5)accordingtoTable3.
2. Insertthefollowerpin(6)intothepinpo-
sitionaccordingtoTable3ofthelever
(5).Fastentightusingthewashersand
nuts
(Fig.3) .
3. Placethelever(5)ontheshaftofthe
mountingunit(2)andfastenittightusing
thediskspring(5.1)andnut(5.2).
4. Mounting to actuators with 120 to
700cm² actuator areas (Fig.4 1 ):
Fastenthefollowerplate(7.1)atthemid-
dleholestothestemconnector(9)ofthe
actuatorusingthewashers(7.2)and
screws(7.3).
Mounting to Type3271 Actuators with
1400 and 2800cm² actuator areas and
with 200mm rated travel (Fig.4 2)
Fastenthefollowerplate(7.4)attheout-
erholestothestemconnector(9)ofthe
actuatorusingthescrews(7.5).
Mounting to Type3271 Actuators with
2800cm² actuator area and with 50,
100 or 200mm rated travel (Fig.4 3 )
Screwthebracket(8)tothestemconnec-
tor(9)oftheactuatorusingthescrews
(8.2).
Fastenthefollowerplate(7.1)together
withpins(8.1)locatedinthemiddle
holestothebracket(8)usingthewashers
(7.2)andscrews(7.3).
5. Fastenthemountingunit(2)totheactua-
torusingthescrew(4),ensuringthatthe
followerpin(6)comestorestintheslot
ofthefollowerplate(7.1/7.4).
6. Electronic limit switch with integrated
solenoid valve: connect supply air to
supplyairport(SUPPLY,2.1).
6
6.2
6.2
6.1
5.2
5.1
5
5 Lever
5.1 Diskspring
5.2 Nut
6 Follower pin
6.1 Washer
6.2 Nut
Fig.3: Fastening the follower pin on the lever

EB 8390-5 EN 19
Attachment
3
1 Electronic limit switch
2 Mounting unit
2.1 Supplyairport(SUPPLY)
4 Screw
5 Lever
5.1 Diskspring
5.2 Nut
6 Follower pin
6.1 Washer
6.2 Nut
7.1 Follower plate
7.2 Washer
7.3 Screws
7.4 Follower plate
7.5 Screws
8Bracket
8.1 Pin
8.2 Screws
9 Stem connector
7.3
7.2
8.1
7.1
8
8.2
7.5
7.4 7.3
7.2
7.1 9
5
5
6
6
2
4
1
2.1
6
5
2
1
Fig.4: Mounting the electronic limit switch on linear actuators

20 EB 8390-5 EN
Attachment
Required accessories: seeTable2
Versions with integrated solenoid valve
(Type 3738-50-xxx4x00x1x00x0)
Version for external solenoid valve
(Type 3738-50-xxx0x00x1x00x0)
Actuator surface
A
*C
M 6
B
30
Ø 5.5
Actuator surface
ShaftheightB [mm] 20 30 50
DistancebetweenholesA [mm] 80 80/130 130
Fig.5: Mounting to rotary actuators according to VDI/VDE3845, level 1 (2010)
5.3 Attachment to rotary actuators
TheelectroniclimitswitchismountedonrotaryactuatorsaccordingtoVDI/VDE3845,lev-
el1(2010).TheversionwithintegratedsolenoidvalvecanbedirectlymountedtoaPfeiffer
Type31bRotaryActuator.