Samson 4747 Service manual

Translation of original instructions
EB 4747 EN
Edition September 2022
Type4747 Limit Switch

Definition 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 4747 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 4747 EN
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................8
1.2 Notes on possible personal injury ...................................................................9
1.3 Notes on possible property damage................................................................9
2 Markings on the device ...............................................................................10
2.1 Nameplate ..................................................................................................10
2.2 Article code.................................................................................................11
3 Design and principle of operation ................................................................13
3.1 Type4747-xxx01InductiveLimitSwitch.........................................................13
3.2 Type4747-xxx1xElectricLimitSwitch............................................................13
3.3 Accessories .................................................................................................15
3.4 Traveltables ................................................................................................16
3.5 Technical data .............................................................................................17
3.6 Summaryofexplosionprotectionapprovals...................................................18
3.7 Dimensionsinmm........................................................................................20
4 Measures for preparation............................................................................21
4.1 Unpacking ..................................................................................................21
4.2 Transporting ................................................................................................21
4.3 Storage.......................................................................................................21
5 Mounting ....................................................................................................21
5.1 Mounting orientation....................................................................................22
5.2 Leverandpinposition ..................................................................................22
5.3 DirectattachmenttoType3277andType3277-5Actuators............................23
5.4 AttachmentaccordingtoIEC60534-6(NAMURrib) ......................................25
5.5 AttachmenttoType3510Micro-owValve ....................................................27
5.6 AttachmentaccordingtoVDI/VDE3845torotaryactuators ...........................29
5.6.1 Lightversion ................................................................................................29
5.6.2 Heavy-duty version ......................................................................................31
6 Electrical connections...................................................................................33
6.1 ElectricalconnectionfortypeofprotectionExd..............................................33
6.2 ElectricalconnectionfortypeofprotectionExia .............................................34
6.3 EquipmentwithtypeofprotectionExt ...........................................................34
6.4 Equipmentforuseinzone2/22 ...................................................................35
6.5 Cableentry .................................................................................................35
6.6 Switchingamplier ......................................................................................35

Contents
EB 4747 EN
7 Servicing.....................................................................................................36
7.1 Servicingexplosion-protecteddevices............................................................36
7.2 Preparationforreturnshipment.....................................................................37
8 Malfunctions ...............................................................................................38
8.1 Emergency action ........................................................................................39
9 Decommissioning and removal ....................................................................39
9.1 Decommissioning.........................................................................................39
9.2 Removingthelimitswitch..............................................................................39
9.3 Disposal......................................................................................................39
10 Annex.........................................................................................................40
10.1 After-sales service........................................................................................40

EB 4747 EN 5
Safety instructions and measures
1 Safety instructions and measures
Intended use
TheSAMSONType4747LimitSwitchissuesanelectricsignalwhenthevalvetravelexceeds
or falls below an adjusted limit. The signal is suitable for switching control signals, issuing vi-
sual and audible alarms or for connection to central control or alarm systems. The device is
designedtooperateunderexactlydenedconditions(e.g.temperature).Therefore,opera-
tors must ensure that the limit switch is only used in applications where the operating condi-
tions correspond to the technical data. In case operators intend to use the limit switch in ap-
plications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4747LimitSwitch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limitswitchmustbemounted,startedupandservicedbyfullytrainedandqualiedper-
sonnel only; the accepted industry codes and practices must be observed. According to these
mounting and operating instructions, trained personnel is referred to as individuals who are
abletojudgetheworktheyareassignedtoandrecognizepossibledangersduetotheirspe-
cializedtraining,theirknowledgeandexperienceaswellastheirknowledgeoftheapplica-
ble 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.

6 EB 4747 EN
Safety instructions and measures
Personal protective equipment
No personal protective equipment is required for the direct handling of the limit switch. 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.
Furthermore, the product may no longer meet the requirements for its intended use.
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
preventhazardsthatcouldbecausedinthecontrolvalvebytheprocessmedium,theoperat-
ingpressure,thesignalpressureorbymovingparts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.
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.

EB 4747 EN 7
Safety instructions and measures
Referenced standards, directives and regulations
DeviceswithaCEmarkingfulllthefollowingrequirementsoftheDirectives:
− Type4747-0:2014/30/EU,2014/35/EU,2011/65/EU
− Types4747-110,-210,-810:2014/30/EU,2014/34/EU,2011/65/EU
DeviceswithanEACmarkingfulllthefollowingrequirementsoftheRegulations:
− Type4747:TRCU020/2011
− Types4747-113,-213,-813:TRCU012/2011withtheapplicableGOSTstandards:
− ГОСТ31610.0-2014(IEC60079-0:2011)
− ГОСТ31610.11-2014(IEC60079-11:2011)
− ГОСТIEC60079-1-2011
− ГОСТ31610.15-2012/МЭК60079-15:2005
− ГОСТIEC60079-31-2013
SeeAnnexfordeclarationsofconformityandEACcerticates.
Referenced documentation
The following documents apply in addition to these mounting and operating instructions:
− The mounting and operating instructions of the components on which the limit switch is
mounted (valve, actuator, valve accessories etc.).

8 EB 4747 EN
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limitswitchinpotentiallyexplo-
sive atmospheres may lead to ignition of the atmosphere and ultimately to death, even
with a harmless supply voltage.
ÎFormountingandelectricalinstallationinhazardousareas,observetheexplosion
protection approvals as well as the relevant electrotechnical regulations and the ac-
cidentpreventionregulationsthatapplyinthecountryofuse.EN60079-14applies
in Europe.
ÎDo not connect the electrical supply before mounting is completed.
ÎInstallation, operation or maintenance of the limit switch must only be performed by
personnelwithqualicationsaccordingtoClause4.5ofIEC60079-14whohasun-
dergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplo-
sion-protecteddevicesinhazardousareas.
ÎDonotopendeviceswithameproofenclosureswhiletheyareenergized.
Risk of fatal injury as a result of electrostatic discharge at the device.
An electric spark generated by electrostatic discharge may lead to ignition of a poten-
tiallyexplosiveatmosphereandcausefatalinjuries.
ÎInhazardousareas(withtypeofprotectionExt),mountthedeviceinsuchaway
that electrostatic charging cannot take place.

EB 4747 EN 9
Safety instructions and measures
1.2 Notes on possible personal injury
WARNING
!
Crush hazard arising from moving parts on the valve and actuator.
The 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.
ÎWhile performing any mounting or installation on the valve or actuator, disconnect
and lock the pneumatic air supply as well as the control signal.
1.3 Notes on possible property damage
NOTICE
!
An incorrect electrical power supply will damage the limit switch.
TheType4747LimitSwitchisdesignedtooperateunderexactlydenedelectricalcon-
ditions.
ÎOnly connect the limit switch to a suitable power supply after mounting is complet-
ed.
Risk of malfunction due to incorrect mounting parts/accessories or incorrect assign-
ment of lever and pin position.
ÎOnlyusemountingparts/accessorieslistedinthesemountingandoperatinginstruc-
tions to mount the limit switch.
ÎObserve the type of attachment.
ÎObserve the assignment between lever and pin position.

10 EB 4747 EN
Markings on the device
2 Markings on the device
2.1 Nameplate
SAMSON AG D-60314 Frankfurt Made in Germany
Var.-ID Serial no.
Model 4747-
SAMSON 4747
Limit switch, inductive
* See EU Type Examination Certificate for further values
WARNING-POTENTIAL ELECTROSTATIC CHARGING HAZARD*
3
2
4 5
1
6
SAMSON AG D-60314 Frankfurt Made in Germany
Var.-ID Serial no.
Model 4747-
SAMSON 4747
Reed magnetic switch
* See EU Type Examination Certificate for further values
WARNING-POTENTIAL ELECTROSTATIC CHARGING HAZARD*
3
2
4 5
1
1Typeofprotectionforexplosion-protecteddevices
2Temperaturelimitsinthetestcerticatesforexplosion-protecteddevices
3 Model number
4 CongurationID
5 Serial number
6CEmarking

EB 4747 EN 11
Markings on the device
2.2 Article code
Limit switch Type4747- x x x x x x x x x x 0xxxxx
Type of protection
Without 000
ATEX
II2GExiaIICT6Gb
II2DExiaIIICT85°CDbIP66
II2DExtbIIICT85°CDbIP66
110
EAC Ex 1ExiaIICT6/T5/T4Gb
ExtbIIICT85°CDb 113
TR CMU
1055
II2GExiaIICT6Gb
II2DExiaIIICT85°CDbIP66
II2DExtbIIICT85°CDbIP66
116
ATEX II2GExdbIICT6...T4Gb
II2DExtbIICT80°CDb 210
IECEx ExdIICT6,T5,rep.T4
ExtDA21IP66T80°C 211
CCC Ex ExdIICT4~T6Gb
ExtDA21IP66T80°C 212
NEPSI ExdIICT4~T6Gb
DIPA21Ta,T4~T6 212
EAC Ex 1ExdIICT6/T5/T4GbX
ExtbIIICT80°CDbX 213
TR CMU
1055
II2GExdbIICT6...T4Gb
II2DExtbIIICT80°CDb 216
FM
XP/I/1/ABCD/T6
DIP/II,III/EFG/T6
I/1/AExd/IIC/T6
Type4X,IP66
230
CSA
ClassI,Div1+2,GroupsA,B,C,D
ClassII,Div1+2,GroupsE,F,G
ClassIII
ClassI,Zone1,ExdIIC,T6...T4
ClassII,Zone21,ExtbIIICT85°C
Type4X,IP66
231
ATEX
II3GExicIICT6Gc
II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66
810
EAC Ex
2ExnAIICT6/T5/T4Gc
2ExicIICT6/T5/T4Gc
ExtcIIICT85°CDc
ExtbIIICT80°CDbX
813

12 EB 4747 EN
Markings on the device
Limit switch Type4747- x x x x x x x x x x 0xxxxx
TR CMU
1055
II3GExicIICT6Gc
II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66
816
Limit contact
InductiveproximitysensorNCB2-V3-N0
(–25to+80°C) 0 1
Microswitches with silver contacts
(–40to+80°C) 1 1
Microswitches with gold contacts
(–40to+80°C) 1 2
Number of contacts
11
22
Switching angle
<100°adjustable 0
Electrical connection
M20x1.5 1
½NPT 2
Degree of protection
IP66 0
Ambient temperature 1)
–25to+80°C(+65°CinT6) 0
–40to+80°C(+65°CinT6) 1
–25to+70°C(+65°CinT6) 2
Material
Aluminum 0
Stainless steel 1
Safety approval
Without 0
Special version
Without 000
1) Themaximumpermissibleambienttemperatureofthelimitswitchdependsonthepermissibleambienttemperature
of the components, type of protection and temperature class.

EB 4747 EN 13
Design and principle of operation
3 Design and principle of oper-
ation
Thelimitswitchisequippedwithamaximum
oftwoinductiveproximityswitchesortwo
electric microswitches.
For most applications the contacts are ad-
justed to issue a signal when the actuator
has reached one of its end positions. The
switching point can be adjusted to any posi-
tion within the opening angle or travel range
tosignalizeintermediatepositions.
Theshaft(4)ofthelimitswitchisconnected
to the actuator by a follower pin. The shaft
hasamaximumoftwometaltagsorcam
disks (3).
3.1 Type4747-xxx01 Inductive
Limit Switch
A NAMUR signal is required to control the
inductive contacts (see section 6.6).
The limit switch has adjustable metal tags (3)
ontheshaft(4).Whenthetag(3)isinside
themagneticeldoftheNAMURproximity
switch,theproximityswitchisattenuated
and the output has a high impedance
(switchingfunction“Contactopen”).When
thetag(3)leavesthemagneticeld,the
NAMURproximityswitchisunattenuated
and the output has a low impedance (switch-
ingfunction"Contactclosed").Thetag(3)
can be adjusted to a switching point be-
tween0and100°attheadjustmentscrew
(2).
3.2 Type4747-xxx1x Electric
Limit Switch
Thelimitswitchhasamaximumoftwoad-
justable metal cam disks (3) on the shaft (1).
The cam disk (3) activates the electric mi-
croswitch over the roller on the switch lever.
The cam disks (3) can be adjusted to a
switchingpointbetween0and100°atthe
adjustment screws (2).
Note

14 EB 4747 EN
Design and principle of operation
2
3
4
1
1 Terminal block
2 Adjustment screw
3Camdiskormetaltag
4Shaft
Fig.1: Type4747 Limit Switch

EB 4747 EN 15
Design and principle of operation
3.3 Accessories
Table1: Cable glands
Designation Order no.
M20x1.5Exdcablegland,madeofbrass,withO-ring,fornon-armoredcable(6.5to14mm
cable diameter)
8808-0200
½NPTExdcablegland,madeofbrass,withO-ring,fornon-armoredcable(6.5to14mm
cable diameter)
8808-2010
M20x1.5Exe cable gland, made of polyamide (black), with O-ring 8808-01781)
M20x1.5cablegland,madeofbrass,withO-ring 1890-48751)
M20x1.5cablegland,madeofbrass(blue),withO-ring 1890-48761)
M20x1.5cablegland,madeofpolyamide(black),withoutO-ring 8808-1011 1)
M20x1.5cablegland,madeofpolyamide(blue),withoutO-ring 8808-1012 1)
O-ring18x2 8421-0067
1) The cable gland is notsuitableforExdinstrumentation.
Table2: Mounting kits
Designation Order no.
AttachmentaccordingtoVDI/VDE3845,level2,heavy-dutyversion 1400-9974
AttachmentaccordingtoVDI/VDE3845,level1,lightversion(AA1toAA4size) 1400-7473
AttachmentaccordingtoVDI/VDE3845,level1,heavy-dutyversion(AA1toAA4size) 1400-9384
AttachmentaccordingtoVDI/VDE3845,level1,heavy-dutyversion(AA5size) 1400-9992
AttachmentforVETECS160/R,heavy-dutyversion 1400-9385
MountingkitforType3277LinearActuators(240,350,700cm²) 1400-7471
MountingkitforType3271LinearActuators(120cm²) 1400-7472
Mounting kit for SED diaphragm valves (both mounting kits are required) 1402-1093
1400-7472
MountingkitforcontrolvalveswithNAMURriborattachmenttovalveswithrod-typeyokesac-
cordingtoIEC60534-6(20to35mmroddiameter)
1400-7468
MountingkitforType3510Micro-owValvewith60or120cm²actuatorarea 1402-0479

16 EB 4747 EN
Design and principle of operation
3.4 Travel tables
The M lever is included in the scope of delivery.
S, L, XL levers for attachment according to IEC60534-6 (NAMUR rib) are available as
accessories in the mounting kits.
Direct attachment to Type3277-5 and Type3277 Actuators
Actuator area Rated travel Required le-
ver
Assigned pin posi-
tion
[cm²] [mm]
120 7.5 M 25
120/175/240/350 15 M 35
355/700/750 30 M 50
Attachment according to IEC60534-6 (NAMUR rib)
SAMSON valves with Type3271 Actu-
ator
Other control
valves
Required le-
ver
Assigned pin posi-
tion
Actuator area Rated travel Max. travel
[cm²] [mm] [mm]
60 and 120 with
Type3510Valve
7.5 17 S17
120 7.5 25 M 25
120/175/240/350 15 35 M 35
700/750 7.5 35 M 35
355/700/750 15 and 30 50 M 50
1000/1400/2800 30 70 L 70
60 100 L100
1400/2800 120 200 XL 200
Attachment according to VDI/VDE3845 to rotary actuators
Opening angle Required
lever
Assigned pin
position
0to100° M90°
Note

EB 4747 EN 17
Design and principle of operation
3.5 Technical data
Type4747-xxx0 Inductive Limit Switch
The technical data for the explosion-protected devices may be restricted by the limits specied in the test certi-
cates.
ÎRefer to test certicates in the annex.
Controlcircuit SwitchingamplieraccordingtoEN60947-5-6:2000
Inductiveproximitysensor NCB2-V3-NO
Switching element NAMURNCcontact
Contacts 1 or 2
Permissibleambienttemperature –25to+80°C
Electrical connection M20x1.5or½NPT
Degree of protection IP66
Weight Approx.0.65kg
Type4747-xxx1 Electric Limit Switch · Specications apply to silver and gold-plated contacts
Switching element Electriclimitswitch:changeovercontact/SPDT(single-pole/double-throwtype)
Permissibleload ACvoltage
250V/10A
Contacts 2
Permissibleambienttemperature1) –40to+80°C
Electrical connection M20x1.5or½NPT
Degree of protection IP66
Weight Approx.0.65kg
Materials
Enclosure and cover Aluminum,powdercoated,graybeigeRAL1019orstainlesssteel1.4409
Externalparts Stainlesssteel1.4301/1.4310/1.4409
Conformity ·

18 EB 4747 EN
Design and principle of operation
Electric data for connection to intrinsically safe current circuits (Exia)
The listed technical data may be restricted by the limits specied in the test certicates.
ÎRefer to test certicates in the annex.
LimitSwitch Type4747-11x01
Limitcontacts Inductive
Output voltage 1) Ui16V 16V
Output current 1) Ii25mA 52mA
Powerdissipation1) Pi64mW 169mW
Outer capacitance 1) Ci100nF
Outer inductance 1) Li100μH
Permissibleambienttemperature –25to+80°C –25to+80°C
1) Permissiblemaximumvalueswhenconnectedtoacertiedintrinsicallysafecircuit.
3.6 Summary of explosion protection approvals
Type Certication Type of protection/comments
4747-110 ATEX1) Number PTB12ATEX2020 II2GExiaIICT6Gb
II2DExiaIIICT85°CDbIP66
II2DExtbIIICT85°CDbIP66
Date 2013-04-26
4747-113 EAC Ex
Number RUC-DE.AA87.B.00084/19 1ExiaIICT6/T5/T4Gb
ExtbIIICT85°CDb
Date 2019-02-19
Validuntil 2024-02-19
4747-116 TR CMU
1055
Number ZETC/36/2021 II2GExiaIICT6Gb
II2DExiaIIICT85°CDbIP66
II2DExtbIIICT85°CDbIP66
Date 2021-07-26
Validuntil 2024-07-25
4747-210 ATEX1) Number KIWA16ATEX0052X II2GExdbIICT6...T4Gb
II2DExtbIICT80°CDb
Date 2018-10-18
4747-211 IECEx Number IECExPTB09.0060X ExdIICT6,T5,rep.T4
ExtDA21IP66T80°C
Date 2009-11-25
4747-212
CCC Ex
Number 2020032231503131 ExdIICT4~T6Gb
ExtDA21IP66T80°C
Date 2020-11-04
Validuntil 2025-11-03
NEPSI
Number GYJ20.1056X ExdIICT4~T6Gb
DIPA21Ta,T4~T6
Date 2020-02-12
Validuntil 2025-01-25

EB 4747 EN 19
Design and principle of operation
Type Certication Type of protection/comments
4747-213 EAC Ex
Number RUC-DE.AA87.B.00084/19 1ExdIICT6/T5/T4GbX
ExtbIIICT80°CDbX
Date 2019-02-19
Validuntil 2024-02-19
4747-216 TR CMU
1055
Number ZETC/36/2021 II2GExdbIICT6...T4Gb
II2DExtbIIICT80°CDb
Date 2021-07-26
Validuntil 2024-07-25
4747-230 FM Number 3037212 XP/I/1/ABCD/T6
DIP/II,III/EFG/T6
I/1/AExd/IIC/T6
Type4X,IP66
Date 2011-03-08
4747-231 CSA Number 70004607
ClassI,Div1+2,GroupsA,B,C,D
ClassII,Div1+2,GroupsE,F,G
ClassIII
ClassI,Zone1,ExdIIC,T6...T4
ClassII,Zone21,ExtbIIICT85°C
Type4X,IP66
Date 2016-06-02
4747-810 ATEX1) Number PTB12ATEX2020 II3GExicIICT6Gc
II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66
Date 2013-04-26
4747-813 EAC Ex
Number RUC-DE.AA87.B.00084/19 2ExnAIICT6/T5/T4Gc
2ExicIICT6/T5/T4Gc
ExtcIIICT85°CDc
ExtbIIICT80°CDbX
Date 2019-02-19
Validuntil 2024-02-19
4747-816 TR CMU
1055
Number ZETC/36/2021 II3GExicIICT6Gc
II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66
Date 2021-07-26
Validuntil 2024-07-25
1) EUtypeexaminationcerticate

20 EB 4747 EN
Design and principle of operation
3.7 Dimensions in mm
94
77
40
99
80
30