Samson 4747 Service manual

Translation of original instructions
EB 4747 EN
Edition January 2019
Type4747 Limit Switch

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 4747 EN

Contents
EB 4747 EN 3
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................8
1.3 Notes on possible property damage................................................................8
2 Markings on the device .................................................................................9
2.1 Nameplate ....................................................................................................9
2.2 Article code.................................................................................................10
3 Design and principle of operation ................................................................12
3.1 Type4747-xxx01InductiveLimitSwitch.........................................................12
3.2 Type4747-xxx1xElectricLimitSwitch............................................................12
3.3 Accessories .................................................................................................14
3.4 Traveltables ................................................................................................15
3.5 Technical data .............................................................................................16
3.6 Summaryofexplosionprotectionapprovals...................................................18
3.7 Dimensions in mm........................................................................................19
4 Measures for preparation............................................................................20
4.1 Unpacking ..................................................................................................20
4.2 Transporting ................................................................................................20
4.3 Storage.......................................................................................................20
5 Mounting ....................................................................................................20
5.1 Mounting position........................................................................................21
5.2 Leverandpinposition ..................................................................................21
5.3 DirectattachmenttoType3277andType3277-5Actuators............................22
5.4 AttachmentaccordingtoIEC60534-6(NAMURrib) ......................................24
5.5 AttachmenttoType3510Micro-owValve ....................................................26
5.6 AttachmentaccordingtoVDI/VDE3845torotaryactuators ...........................28
5.6.1 Lightversion ................................................................................................28
5.6.2 Heavy-duty version ......................................................................................30

Contents
4 EB 4747 EN
6 Electrical connections...................................................................................32
6.1 ElectricalconnectionfortypeofprotectionExd..............................................32
6.2 ElectricalconnectionfortypeofprotectionExia .............................................33
6.3 EquipmentwithtypeofprotectionExt ...........................................................34
6.4 Equipmentforuseinzone2/22 ...................................................................34
6.5 Cableentry .................................................................................................34
6.6 Switchingamplier ......................................................................................35
7 Operation...................................................................................................36
7.1 Adjusting the switching point ........................................................................36
8 Servicing.....................................................................................................37
8.1 Servicingexplosion-protecteddevices............................................................37
8.2 Preparation for return shipment.....................................................................38
9 Malfunctions ...............................................................................................39
9.1 Emergency action ........................................................................................40
10 Decommissioning and removal ....................................................................40
10.1 Decommissioning.........................................................................................40
10.2 Removingthelimitswitch..............................................................................40
10.3 Disposal......................................................................................................40
11 Appendix....................................................................................................41
11.1 After-sales service........................................................................................41

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
visual 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,operators
must ensure that the limit switch is only used in applications where the operating conditions
correspond to the technical data. In case operators intend to use the limit switch in other
applicationsorconditions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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speciedbySAMSON
Qualications of operating personnel
Thelimitswitchmustbemounted,startedupandservicedbyfullytrainedandqualied
personnel only; the accepted industry codes and practices are to 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specializedtraining,theirknowledgeandexperience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.

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
operating pressure, the signal pressure or by moving parts 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, it must be restricted using a suitable supply pressure reducing station.
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.
Referenced standards and regulations
DeviceswithaCEmarkingfullltherequirementsoftheDirectives2014/30/EUand
2014/34/EUforexplosion-protectedapplications.ThisEUdeclarationofconformityisin-
cludedintheAppendixoftheseinstructions.

EB 4747 EN 7
Safety instructions and measures
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.).
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 cause 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 supply voltage before mounting is completed.
ÎInstallation, operation or maintenance of the limit switch must only 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whentheelectricalpowersupplyis
connected.
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death.
ÎInhazardousareas(withtypeofprotectionExt),mountthedeviceinsuchaway
that electrostatic charging cannot take place.

8 EB 4747 EN
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 stems), 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.

EB 4747 EN 9
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theexplosion-protecteddevices
3 Model no.
4 CongurationID
5 Serial number
6CEmarking

10 EB 4747 EN
Safety instructions and measures
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tbIIICT85°CDbIP66 110
EAC 1ExiaIICT6/T5/T4Gb
ExtbIIICT85°CDb 113
ATEX II2GExdIICT6/T5/T4
II2DExtDA21IP66T80°C 210
IECEx ExdIICT6,T5,rep.T4
ExtDA21IP66T80°C 211
NEPSI ExdIICT4~T6Gb
DIPA21Ta,T4~T6 212
EAC 1ExdIICT6/T5/T4GbX
ExtbIIICT80°CDbX 213
STCC II2GExdIICT6
II2DExtbIIICT80°C 216
FM AExdIICT6 230
ATEX II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66 810
EAC 2ExnAIICT6/T5/T4Gc
ExtcIIICT85°CDc 813
Limit contact
InductiveproximitysensorNCB2-V3-N0
(–25to+80°C) 0 1
InductiveproximitysensorNBB3-V3-Z5
(–25to+70°C) 1 0
Microswitches with silver contacts
(–40to+80°C) 1 1
Microswitches with gold contacts
(–40to+80°C) 1 2

EB 4747 EN 11
Safety instructions and measures
Limit Switch Type4747 - x x x x x x x x x x 0xxxxx
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
SIL 1
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.

12 EB 4747 EN
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 adjusted to issue a signal
when the actuator has reached one of its
end positions. The switching point can be
adjusted to any position within the opening
angleortravelrangetosignalizeintermedi-
ate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 Induc-
tive 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
(switchingfunction"Contactclosed").The
tag (3) can be adjusted to a switching point
between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

EB 4747 EN 13
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

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

EB 4747 EN 15
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 ac-
cessories in the mounting kits.
Direct attachment to Type3277-5 and Type3277 Actuators
Actuator area Rated travel Required
lever
Assigned pin
position
[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
Actuator
Other control
valves
Required
lever
Assigned pin
position
Actuator area Rated travel Max. travel
[cm²] [mm] [mm]
60 and 120 with
Type3510Valve
7.5 17 S 17
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 L70
60 100 L100
1400/2800 120 200 XL 200
Attachment according to VDI/VDE3845 to rotary actuators
Opening angle Required le-
ver
Assigned pin posi-
tion
0to100° M90°
Note

16 EB 4747 EN
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 appendix.
Controlcircuit Switchingamplieraccordingto
EN60947-5-6:2000
5to60VDC
(Pmax≤4W)
Inductiveproximitysensor NCB2-V3-NO NBB3-V3-Z5
Switching element NAMURNCcontact NCcontact
Contacts 1 or 2
Permissible ambient temperature –25to+80°C –25to+70°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 DCvoltage
250V/10A 125V/0.5A
24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
Compliance ·

EB 4747 EN 17
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 appendix.
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.

18 EB 4747 EN
Design and principle of operation
3.6 Summary of explosion protection approvals
Type Certication Type of protection/comments
4747-xxx01 SIL Number P+F02/4-13R008 Certicationforsafety-instrumented
systemsaccordingtoIEC61508
Date 2002-12-09
4747-110 ATEX Number PTB12ATEX2020 II2GExiaIICT6Gb
II2DExtbIIICT85°CDbIP66
Date 2013-04-26
4747-113 EAC Number RUC-DE.08.B.00117 1ExiaIICT6/T5/T4Gb
ExtbIIICT85°CDb
Date 2013-11-15
4747-210 ATEX Number PTB09ATEX1113X II2GExdIICT6/T5/T4,
II2DExtDA21IP66T80°C
Date 2009-11-20
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 NEPSI Number GYJ14.1065X ExdIICT4~T6Gb
DIPA21Ta,T4~T6
Date 2014-02-24
4747-213 EAC Number RUC-DE.08.B.00117 1ExdIICT6/T5/T4GbX
ExtbIIICT85°CDbX
Date 2013-11-15
4747-216 STCC Number ZETC/25/2018 II2GExdIICT6,T5,T4
II2DExtDA21IP66T80°C
Date 2018-04-27
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
4747-810 ATEX
Number PTB12ATEX2020 II3GExnAcIIT6Gc
II3DExtcIIICT85°CDcIP66
Date 2013-04-26
4747-813 EAC Number RUC-DE.08.B.00117 2ExnAIICT6/T5/T4Gc
ExtcIIICT85°CDc
Date 2013-11-15

EB 4747 EN 19
Design and principle of operation
3.7 Dimensions in mm
94
77
40
99
80
30

20 EB 4747 EN
Measures for preparation
4 Measures for preparation
After receiving the shipment, proceed as fol-
lows:
1. Checkthescopeofdelivery.Compare
the shipment received with the delivery
note.
2. Checktheshipmentfortransportation
damage.Reportanytransportationdam-
age.
4.1 Unpacking
Do not remove the packaging if the limit
switch is to be transported to another loca-
tion or kept in storage.
Beforemountingthelimitswitch,proceedas
follows:
1. Removethepackagingfromthelimit
switch.
2. Dispose of the packaging in accordance
with the valid regulations.
4.2 Transporting
−Protectthelimitswitchagainstexternal
inuences(e.g.impact).
−Protect the limit switch against moisture
and dirt.
−Observe transport temperature depend-
ing on the permissible ambient tempera-
ture(seetechnicaldatainsection3.5).
4.3 Storage
Risk of damage to the limit switch due to im-
proper storage.
Observe storage instructions. Contact
SAMSON, if need be.
Storage instructions
−Protectthelimitswitchagainstexternal
inuences(e.g.impact,shocks,vibra-
tion).
−Do not damage the corrosion protection
(coating).
−Protect the limit switch against moisture
and dirt. In damp spaces, prevent con-
densation. If necessary, use a drying
agent or heating.
−Observe storage temperature depending
on the permissible ambient temperature
(seetechnicaldatainsection3.5).
5 Mounting
The limit switch is suitable for the following
types of attachment:
−Direct attachment to SAMSON
Type3277Actuator
−Attachment to actuators according to
IEC60534-6(NAMURrib)
−AttachmenttoType3510Micro-ow
Valve
−AttachmentaccordingtoVDI/VDE3845
to rotary actuators
Note
NOTICE
!