Samson EB 3773 Series Manuel de service
Translation of original instructions
EB 3773 EN
Edition November 2021
Type3773 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. 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
(aftersalesservice@samsongroup.com).
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.
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 3773 EN
Contents
EB 3773 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-3
1.2 Notes on possible personal injury ................................................................1-3
1.3 Notes on possible property damage.............................................................1-4
2 Markings on the device ..............................................................................2-1
2.1 Nameplate .................................................................................................2-1
2.2 Article code................................................................................................2-2
3 Design and principle of operation ...............................................................3-1
3.1 Technical data ............................................................................................3-3
3.2 Dimensions in mm.......................................................................................3-6
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the limit switch ...............................................4-1
4.3 Transporting the limit switch.........................................................................4-1
4.4 Storing the limit switch.................................................................................4-1
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-1
5.3 Mounting the limit switch .............................................................................5-2
5.3.1 AttachmentaccordingtoVDI/VDE3845,level1...........................................5-2
5.3.2 AttachmentaccordingtoVDI/VDE3845,level2...........................................5-2
5.4 Electrical connections ..................................................................................5-3
6 Start-up .....................................................................................................6-1
6.1 Adjusting the limit contacts ..........................................................................6-1
7 Operation..................................................................................................7-1
8 Malfunction................................................................................................8-1
8.1 Emergencyaction .......................................................................................8-1
9 Servicing....................................................................................................9-1
9.1 Servicing explosion-protected devices...........................................................9-2
9.2 Maintenance, calibration and work on equipment .........................................9-2
9.3 Preparation for return shipment....................................................................9-3
9.4 Cleaning the housing cover..........................................................................9-3
9.5 Periodic inspection and testing of the limit switch ...........................................9-3
10 Decommissioning .....................................................................................10-1
11 Removal ..................................................................................................11-1
Contents
EB 3773 EN
12 Repairs ....................................................................................................12-1
12.1 Returning devices to SAMSON ..................................................................12-1
13 Disposal...................................................................................................13-1
14 Certicates and instructions concerning explosion protection......................14-1
14.1 Certicates ...............................................................................................14-1
14.2 Instructions concerning explosion protection................................................14-1
15 Annex......................................................................................................15-1
15.1 After-sales service.....................................................................................15-1
EB 3773 EN 1-1
Safety instructions and measures
1 Safety instructions and measures
Intended use
TheSAMSONType3773LimitSwitchismountedonpneumaticrotaryactuatorsaccording
toVDI/VDE3845.Itissuesanelectricsignalwhenthevalvetravelexceedsorfallsbelowan
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 oper-
ateunderexactlydenedconditions(e.g.temperature).Therefore,operatorsmustensurethat
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 condi-
tionsthanspecied,contactSAMSON.
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.
ÎRefertothetechnicaldataforlimitsandeldsofapplicationaswellaspossibleuses.
Reasonably foreseeable misuse
TheType3773LimitSwitchisnot suitable for the following applications:
−Useoutsidethelimitsdenedduringsizingandbythetechnicaldata
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
Qualications of operating personnel
Thelimitswitchmustbemounted,startedupandservicedbyfullytrainedandqualiedper-
sonnel only; the accepted industry codes and practices must be observed. According to these
mounting and operating instructions, trained personnel refers to individuals who are able to
judgetheworktheyareassignedtoandrecognizepossiblehazardsduetotheirspecialized
training, their knowledge and experience as well as their knowledge of the applicable stan-
dards.
Explosion-protected versions of this device must be operated only by personnel who has un-
dergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplosion-protected
devicesinhazardousareas.
1-2 EB 3773 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.
ÎObservetherequirementsforpersonalprotectiveequipmentspeciedinthevalvedocu-
mentation.
ÎCheck with the plant operator for details on further protective equipment.
Revisions and other modications
Revisions,conversionsorothermodicationsoftheproductarenotauthorizedbySAMSON.
Theyareperformedattheuser'sownriskandmayleadtosafetyhazards,forexample.Fur-
thermore, 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
preventhazardsthatcouldbecausedinthecontrolvalvebytheprocessmedium,theoperat-
ing pressure, the signal pressure or by moving parts by taking appropriate precautions. Plant
operatorsandoperatingpersonnelmustobserveallhazardstatements,warningandcaution
notes in these mounting and operating instructions, especially for installation, start-up and
service work.
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
wellasthespeciedhazardstatements,warningandcautionnotes.Furthermore,theoperat-
ing personnel must be familiar with the applicable health, safety and accident prevention
regulations and comply with them.
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.).
EB 3773 EN 1-3
Safety instructions and measures
1.1 Notes on possible severe personal injury
DANGER
!
Risk of fatal injury due to the ignition of an explosive atmosphere.
Incorrect installation, operation or maintenance of the limit switch in potentially explo-
sive atmospheres may lead to ignition of the atmosphere and ultimately to death.
ÎFormountingandelectricalinstallationinhazardousareas,observetheexplosion
protection approvals as well as the relevant electrotechnical regulations and the ac-
cidentpreventionregulationsthatapplyinthecountryofuse.EN60079-14applies
in Europe: Electrical installations design, selection and erection
ÎInstallation, operation or maintenance of the limit switch must only be performed by
personnelwhohasundergonespecialtrainingorinstructionsorwhoisauthorized
toworkonexplosion-protecteddevicesinhazardousareas.
Risk of fatal injury as a result of electrostatic discharge at the housing.
The housing of the limit switch is made of polycarbonate and may become electrostatical-
ly charged when handled incorrectly. An electric spark generated by electrostatic dis-
charge may lead to ignition of a potentially explosive atmosphere and cause death.
ÎClean a device installed in dust atmospheres regularly.
ÎOnly use a damp cloth or wipes to clean the housing surface.
1.2 Notes on possible personal injury
WARNING
!
Incorrect electrical connection will render the explosion protection unsafe.
ÎAdhere to the terminal assignment and observe correct polarity.
ÎDo not undo the enameled screws.
ÎDonotexceedthemaximumpermissiblevalues(Ui,li,Pi,Ci,Li)speciedintheEU
typeexaminationcerticateswheninterconnectingintrinsicallysafeelectricalequip-
ment.
1-4 EB 3773 EN
Safety instructions and measures
1.3 Notes on possible property damage
NOTICE
!
Disruption to the process
ÎDo not mount or service the limit switch while the process is running and only after
isolating the plant by closing the shut-off valves.
EB 3773 EN 2-1
Markings on the device
2 Markings on the device
2.1 Nameplate
Model 3773-
Var.-ID Serial no.
SAMSON AG D-60314 Frankfurt Made in Germany
0044
* For further values see Addendum to EB 3773 EN
3773
Limit switch,
5
2
7
8
4
9
6
1 Degree of protection
2Limitcontactversion(mechanical/inductive)
3 Permissible contact load
4 Model number
5CongurationID
6 Serial number1)
7Type of protection for explosion-protected devices
8 MaximumvaluesoftheEUTypeExaminationCerticate
9Temperaturelimitsinthetestcerticatesforexplosion-protecteddevices
1) Thersttwoguresoftheserialnumberinreverseorderindicatetheyearofmanufactureofthelimitswitch
(example:serialnumber81xxxxxÎYearofmanufacture=2018).
Explosion-protected versionVersion without explosion protection
Model 3773-
Var.-ID
Serial no.
SAMSON AG , Germany Made in Germany
See technical data for ambient temperature
3773
Limit switch, inductive
5
4
1
6
Version with inductive proximity switches
Model 3773-
Var.-ID
Serial no.
SAMSON AG , Germany Made in Germany
See technical data for ambient temperature
3773
Limit switch, mechanical
5
4
13
6
Version with electric microswitches
2-2 EB 3773 EN
Markings on the device
2.2 Article code
Limit switch Type3773- x x x x x x x x x x 0xxx000x x
Explosion protection
Without 0 0 0
ATEX: II2GExiaIICT4/T6Gb
II 2D Ex ia IIIB T95°C Db 110
IECEx: Ex ia IIC T4/T6 Gb
Ex ia IIIB T95°C Db 111
Limitcontact
InductiveSC3,5-N0-WH(–40to+80°C) 0 2
InductiveSJ3,5-SN(–40to+80°C) 0 5
InductiveSJ3,5-S1N(–40to+80°C) 0 6
MicroswitchXGK19-88-S20
withsilvercontact(–40to+80°C) 2 0
MicroswitchXGK12-81-S20
withgoldcontact(–40to+80°C) 2 1
Number of contacts
Two contacts 2
Switching angle
<100° 0
Terminals
Screw terminals 1
Cage clamp terminals 2
Electrical threaded connections
M20x1.5 1
Degree of protection
IP65 0
Housing material
Black plastic (polyarylamide PA MXD6 – GF50) 0
Cover
Blue plastic (polycarbonate (PC) Makrolon®) 0
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