Related Manuals for Samson 4746 Series
Summary of Contents for Samson 4746 Series
- Page 1 EB 8365 EN Translation of original instructions Type 4746 Electric or Pneumatic Limit Switch Edition September 2020...
- Page 2 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.
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Page 3: Table Of Contents
Contents Safety instructions and measures ..............1-1 Notes on possible severe personal injury ............1-4 Notes on possible personal injury ..............1-4 Warnings on the device ................1-5 Markings on the device ................2-1 Nameplate ....................2-1 Article code ....................2-2 Design and principle of operation ...............3-1 3.1 Type 4746-x2 Inductive Limit Switch .............3-1 3.2... - Page 4 Emergency action ..................8-1 Servicing....................9-1 9.1 Servicing explosion-protected devices ............9-2 9.2 Maintenance and calibration ...............9-2 9.3 Periodic inspection and testing of the limit switch ...........9-2 Decommissioning ..................10-1 Removal ....................11-1 Repairs ....................12-1 12.1 Returning devices to SAMSON ..............12-1 Disposal ....................13-1 Certificates ....................14-1 14.1 Certificates ....................14-1 Annex......................15-1 15.1 After-sales service ..................15-1 EB 8365 EN...
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Page 5: Safety Instructions And Measures
In case operators intend to use the limit switch in other applications or conditions than specified, contact SAMSON. SAMSON does not assume any liability for damage resulting from the failure to use the device for its intended purpose or for damage caused by external forces or any other external factors. - Page 6 Î Observe the requirements for personal protective equipment specified in the valve docu- mentation. Î Check with the plant operator for details on further protective equipment. Revisions and other modifications Revisions, conversions or other modifications of the product are not authorized by SAMSON. They are performed at the user's own risk and may lead to safety hazards, for example. Fur- thermore, the product may no longer meet the requirements for its intended use. 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...
- Page 7 Safety instructions and measures Referenced standards and regulations Devices with a CE marking fulfill the following requirements: − Type 4746: 2011/65/EU, 2015/863/EU − Type 4746-0: 2011/65/EU, 2014/30/EU − Type 4746-12: 2011/65/EU, 2014/30/EU, 2014/34/EU − Type 4746-13: 2011/65/EU, 2014/30/EU, 2014/34/EU − Type 4746-82: 2011/65/EU, 2014/30/EU, 2014/34/EU − Type 4746-83: 2011/65/EU, 2014/30/EU, 2014/34/EU The declarations of conformity are included at the back of these mounting and operating instructions.
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Page 8: Notes On Possible Severe Personal Injury
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. Î For 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: Electrical installations design, selection and erection... -
Page 9: Warnings On The Device
There is a risk of personal injury. Î Keep all relevant markings and inscriptions on the device in a constantly legible state. Î Contact SAMSON when nameplates or labels are damaged, missing or incorrect to renew them. - Page 10 EB 8365 EN...
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Page 11: Markings On The Device
Model certified intrinsically safe circuits. Var.-ID Serial no. Model SAMSON AG D-60314 Frankfurt Made in Germany Serial no. Var.-ID SAMSON AG D-60314 Frankfurt Made in Germany 1 Degree of protection... -
Page 12: Article Code
Markings on the device 2.2 Article code Limit switch (device index .07 or higher) Type 4746- Explosion protection Without ATEX II 2G Ex ia IIC T6 Gb Ex ia IIC T6: Class I, Zone 0; Class I, II, Div. 1, Groups A, B, C, D, E, F, G; Class I, II, Div. 2, Groups A, B, C, D, E, F, G; Class I ,Zone 0 AEx ia IIC Class I, II, III, Div. - Page 13 Markings on the device Limit switch (device index .07 or higher) Type 4746- Special versions Without NEPSI Ex ia IIC T4~T6 Gb (on request) NEPSI Ex ic IIC T4~T6 Gc Ex nA IIC T4~T6 Gc (on request) 1Ex ia IIC T6...T4 Gb X 1 2/3 Compatibility with paint Without Free of substances that impair paint adhesion Limit switch (device index .06 or lower) Type 4746- Design Inductive, without explosion protection Inductive, Ex ib IIC T6 Electric Pneumatic...
- Page 14 Note When replacing devices with index .00 to .03, a mounting kit with lever must also be ordered (see the 'Installation' section). EB 8365 EN...
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Page 15: Design And Principle Of Operation
Design and principle of operation 3 Design and principle of oper- 3.2 Type 4746-x3 Electric Limit ation Switch The limit switches are attached to pneumatic In this version, the shaft (2) carries two control valves as well as to Type 4765 and switch cases (3) with adjustable cam disks Type 4763 Positioners. - Page 16 Design and principle of operation 1 1.1 Lever for valve travel Coupling pin Shaft Switch case Adjustment screw Metal tag Cam disk Inductive limit contact Proximity switch Switch lever Roller Spring 1 1.1 Electric switch Pneumatic limit switch Nozzle (in switch) Flapper plate Pneumatic microswitch Plate attached either to actuator stem or plug stem Electric limit switch 8.2 8.1 8.1 8.2...
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Page 17: Technical Data
Design and principle of operation 3.4 Technical data Table 3-1: General data Inductive Limit Switch Type 4746-x2 Type 4746-0281 Control circuit Three-wire switch, Switching amplifier according to EN 60947-5-6 operating voltage 10 to 30 V Proximity switch SC3,5-N0-YE 2) SJ3,5-SN SJ3,5-S1N SB3,5-E2 SC3,5-N0-WH Permissible ambient temperature –20 to +100 °C –20 to +100 °C –20 to +100 °C –20 to +70 °C With metal cable gland –40 to +100 °C –50 to +100 °C –40 to +100 °C... - Page 18 Design and principle of operation Materials Enclosure and cover Powder-coated aluminum Lever and shaft 1.4571 Cable gland M20x1.5, black polyamide Attachment Travel range According to IEC 60534-6 Lever I: 7.5 to 60 mm · Lever II: 60 to 180 mm Attachment to Type 4763/4765 Travel same as positioner Positioner · Conformity Observe the limits specified in the EC-type examination certificate. SJ3,5-N replaced by SC3,5-N0-YE and SC3,5-N0-WH since 2007 Table 3-2: Hysteresis (dead band) Type 4746 Lever length L Hysteresis 50 mm 0.15 (0.25 ) mm 0.6 mm 0.75 mm...
- Page 19 Design and principle of operation Type 4746-12 Type 4746-13 Limit Switch Inductive Electric SC3,5–N0-YE SJ3,5-N SC3,5-N0-WH SJ3,5-SN 4746-1200 4746-1200 4746-1201 4746-1210 Microswitch Limit contacts (old) SJ3,5-S1N SPDT 4746-1211 Temperature class- Ambient temperature range according to EC-type examination certificate (technical data speci- fied in above table additionally apply) °C ≤100 ≤75 ≤100 ≤89 ≤100 ≤89 ≤100 ≤89 –45 to +80 °C ≤80 ≤55...
- Page 20 Design and principle of operation Type Certification Type of protection Number 1607226 Ex ia IIC T6: Class I, Zone 0; Class I, II, Div. 1, Groups A, B, C, D, E, F, Date 2005-09-16 4746-3 Class I, II, Div. 2, Groups A, B, C, D, E, F, Class I ,Zone 0 AEx ia IIC Number 3020228...
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Page 21: Dimensions In Mm
Design and principle of operation 3.5 Dimensions in mm Type 4746-x2 and Type 4746-x3 Type 4746-04 Air connection for separate air supply Air connections, tapped hole G Tapped hole G NPT Intermediate piece for attachment to positioner M20 x 1.5 Output Supply 20.6 Pneumatic connections Lever length L I/L II Lever I: 149 mm Lever II: 202 mm NAMUR rib... - Page 22 EB 8365 EN...
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Page 23: Shipment And On-Site Transport
Î Observe the storage instructions. 4.2 Removing the packaging Î Avoid long storage times. from the limit switch Î Contact SAMSON in case of different storage conditions. Observe the following sequence: Î Do not remove the packaging until immediately before installation of the Note limit switch. - Page 24 Shipment and on-site transport Storage instructions − Protect the limit switch against external influences (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 the 'Design and principle of opera- tion' section).
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Page 25: Installation
Installation 5 Installation 5.2 Preparation for installation The work described in this section is only to Before mounting, make sure the following be performed by personnel appropriately conditions are met: qualified to carry out such tasks. − The limit switch is not damaged. Proceed as follows: 5.1 Installation conditions Î... -
Page 26: Mounting The Limit Switch
Installation 5.3 Mounting the limit switch 5. Attach the limit switch to the support us- ing the mounting screw (12), washer (13) and O-ring (14). Make sure that the 5.3.1 Attachment to valve pin (11) is inserted through the wire with cast yoke strap (1.3) of the lever (1). - Page 27 Installation 12 13 14 11 11.1 10.1 Attachment to valve with cast yoke (NAMUR rib) Lever Clamping plate 12 13 Screw Wire strap Shaft Plate 10.1 Screws 11.1 Nuts Screw Washer O-ring Support Clamping plate 11 11.1 10.1 Attachment to valve with rod-type yoke Fig. 5-1: Attachment to the valve EB 8365 EN...
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Page 28: Attachment To Type 3591 Valve
Installation 5.3.3 Attachment to Additional points that apply concerning mounting: Type 3591 Valve Î Perform the alignment in such a way that Î Use the supplied washers for all screw the lever (15) is parallel to the oblong connections. hole of the follower clamp (11) at half of 1. - Page 29 Installation U-bolt Clamp Screws Limit switch Thread Anti-rotation fixture Mounting bracket 10 Screws 11 Follower clamp 12 Nut and bolt 13 Pin 14 Nut 15 Lever II 16 Clamp (for lever) 17 Nut 18 Lever extension Fig. 5-2: Attachment to Type 3591 Valve EB 8365 EN...
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Page 30: Attachment On Positioners
Installation 5.3.4 Attachment on posi- Make sure that the short lever (1) slides over the pin (16) of the positioner. tioners 4. Replace the vent plug (17) in the posi- For attachment of the limit switch to the tioner housing with the screw plug in- Type 4763 or Type 4765 Positioner cluded in the accessories (order no. according to Fig. 5-3, a short lever (1) and 1400-6710). -
Page 31: Electrical Connections
Installation 5.4 Electrical connections cally safe circuits. Clause 12.2.2.7 ap- plies when running multi-core cables and wires with more than one intrinsically DANGER safe circuit. Risk of fatal injury due to the ignition of an Î Only use cables and wires which have a explosive atmosphere. radial thickness of the insulation of a Î... -
Page 32: Switching Amplifier For Type 4746-X2
Installation 5.5 Pneumatic connection for equipment with energy-limited circuits in type of protection Ex nL IIC. Type 4746-04 Cable entry Î The wires for the limit contacts must be DANGER routed through the cable gland on the Sudden loud noise when the pneumatic housing and connected to the input limit contact switches. - Page 33 Installation EB 8365 EN...
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Page 34: Mounting Accessories
Installation 5.6 Mounting accessories Table 5-2: Accessories for attachment according to IEC 60534-6 Valve Cast yoke Rod-type yoke (NAMUR rib) (18 to 32 mm rod diameter) Travel Up to 60 mm Up to 180 mm Up to 60 mm Up to 180 mm 1400-6713 1400-6714 Mounting kit order 1400-6713 1400-6714 (lever I) (lever II) (lever I) (lever II) plus 1400-5342... -
Page 35: Start-Up
Start-up 6 Start-up 6.1 Adjusting the switching point The work described in this section is only to be performed by personnel appropriately The limit switches attached to control valves qualified to carry out such tasks. are usually adjusted in such a way that a signal is issued when the final travel posi- DANGER tions are reached. - Page 36 Start-up Distance between switching points for Simplified adjustment of the inductive limit 100 mm lever: contacts: Contact SC3,5-N0-YE ≥ 2 mm, Valve CLOSED: Contact SJ3.5-SN ≥ 0.75 mm. Close the valve until the plug sits in the seat. With other lever lengths, adjust the switching Valve OPEN: point to the changed lever length. Move the valve to the desired travel position, For example, if the lever length changes from e.g. final position.
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Page 37: Type 4746-X3 And Type 4746-04
Start-up 6.1.2 Type 4746-x3 and Type 4746-04 Î For adjustment, the cam disk (4.2) must be positioned in such a way that its cam moves towards the roller (6.1, see the 'Design and principle of operation' sec- tion) in accordance with the direction of travel. 1. Move the valve to the desired switching position (e.g. final travel position "valve OPEN" or "valve CLOSED"). - Page 38 EB 8365 EN...
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Page 39: Operation
Operation 7 Operation The work described in this section is only to be performed by personnel appropriately qualified to carry out such tasks. DANGER Risk of fatal injury due to the ignition of an explosive atmosphere. Î Installation, operation or maintenance of the limit switch must only be performed by personnel who has undergone special training or instructions or who is authorized to work on explosion-... - Page 40 EB 8365 EN...
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Page 41: Malfunction
Malfunction 8 Malfunction Proceed as follows in the event of a malfunc- tion: The work described in this section is only to Î Check attachment. be performed by personnel appropriately Î Check the configuration of the mounting qualified to carry out such tasks. parts. Î Check power supply/electrical signal. DANGER Risk of fatal injury due to the ignition of an Î... - Page 42 EB 8365 EN...
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Page 43: Servicing
Note The limit switch was checked by SAMSON DANGER before it left the factory. Sudden loud noise when the pneumatic − The product warranty becomes void if limit contact switches. -
Page 44: Servicing Explosion-Protected Devices
Servicing 9.1 Servicing explosion- 9.2 Maintenance and calibra- protected devices tion If a part of the device on which the explosion Interconnection with intrinsically safe circuits protection is based needs to be serviced, the to check or calibrate the equipment inside or device must not be put back into operation outside hazardous areas is to be performed until a qualified inspector has assessed it only with intrinsically safe current/voltage... - Page 45 Action to be taken in the event of a negative result Check the markings, labels and nameplates on Contact SAMSON when nameplates or labels are the limit switch for their readability and complete- damaged, missing or incorrect to renew them.
- Page 46 EB 8365 EN...
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Page 47: Decommissioning
Decommissioning 10 Decommissioning To decommission the limit switch, proceed as follows: The work described in this section is only to 1. Disconnect and lock the air supply and be performed by personnel appropriately power supply. qualified to carry out such tasks. 2. Unscrew the limit switch cover and dis- connect the wires for the power supply. - Page 48 10-2 EB 8365 EN...
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Page 49: Removal
Removal 11 Removal The work described in this section is only to be performed by personnel appropriately qualified to carry out such tasks. DANGER Risk of fatal injury due to the ignition of an explosive atmosphere. Î For mounting and electrical installation in hazardous areas, observe the explosion protection approvals as well as the relevant electrotechnical regulations and the accident prevention regulations that... - Page 50 11-2 EB 8365 EN...
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Page 51: Repairs
Risk of damage to the limit switch due to incorrect service or repair work. Î Do not perform any repair work on your own. Î Contact SAMSON's After-sales Service for repair work. 12.1 Returning devices to SAMSON Defective limit switches can be returned to SAMSON for repair. - Page 52 12-2 EB 8365 EN...
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Page 53: Disposal
Disposal 13 Disposal We are registered with the Ger- man national register for waste electric equipment (stiftung ear) as a producer of electrical and electronic equipment, WEEE reg. no.: DE 62194439 Î Observe local, national and internation- al refuse regulations. Î Do not dispose of components, lubricants and hazardous substances together with your other household waste. - Page 54 13-2 EB 8365 EN...
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Page 55: Certificates
Certificates 14 Certificates 14.1 Certificates The following certificates are included on the next pages: − EU declarations of conformity for Type 4746, Type 4746-0, Type 4746- 12, Type 4746-13, Type 4746-82 and Type 4746-83 − EAC certificates for Type 4746 and Type 4746-0 − EC type examination certificate (ATEX) for Type 4746-1 − Statement of conformity (ATEX) for Type 4746-82 and Type 4746-83 The certificates shown were up to date at the time of publishing. The latest certificates can be found on our website: u www.samsongroup.com > Products & Applications > Product selector > Valve accessories > Type 4746 EB 8365 EN 14-1... - Page 56 BNP Paribas N° compte 0002200215245 • Banque 3000401857 Tél.: +33 (0)4 72 04 75 00 • Fax: +33 (0)4 72 04 75 75 • E-mail: samson@samson.fr • Internet: www.samson.fr IBAN FR7630004018570002200215245 • BIC (code SWIFT) BNPAFRPPVBE Société par actions simpifiée au capital de 10 000 000 € • Siège social : Vaulx-en-Velin Crédit Lyonnais...
- Page 57 EMC 2014/30/EU +A1:2011, EN 61326-1:2013 RoHS 2011/65/EU EN 50581:2012 Hersteller / Manufacturer / Fabricant: SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 D-60314 Frankfurt am Main Deutschland/Germany/Allemagne Frankfurt / Francfort, 2017-07-29 Im Namen des Herstellers/ On behalf of the Manufacturer/ Au nom du fabricant.
- Page 58 Management par la qualité totale Development Automation and Integration Technologies SAMSON AKTIENGESELLSCHAFT · Weismüllerstraße 3 · D 60314 Frankfurt am Main Revision 09 Fon: +49 69 4009-0 · Fax: +49 69 4009-1507 · E-Mail: samson@samson.de · Internet: www.samson.de 14-4 EB 8365 EN...
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- Page 70 Model 4746-12.. and 4746-13.. Limit Switches Marking: II 2 G EEx ia IIC T6 Manufacturer: SAMSON AG Address: Weismüllerstr. 3, D-60314 Frankfurt, Germany Description of the additions and modifications The model description code has been changed. The old and the new designation code numbers are shown in the table below: 4746-2…...
- Page 71 Physikalisch-Technische Bundesanstalt Braunschweig und Berlin Test Report PTB Ex ....... Addendum No. 1 to the Ex Type Examination Certificate PTB 98 ATEX 2114 Electrical data Models 4746-12..1/..2 with inductive proximity switch Inductive proximity switch Type of Protection: Intrinsic Safety EEx ia IIC (terminals 41/42 and 51/52) only for connection to a certified intrinsically safe circuit Maximum values...
- Page 72 PTB 98 ATEX 2114 Equipment: Model 4746-2 and 4746-3 Limit Switches Manufacturer: SAMSON AG Address: Weismüllerstr. 3, D-60314 Frankfurt This equipment and any acceptable variations thereof is specified in the schedule to this certificate and the documents referred to therein.
- Page 73 Physikalisch-Technische Bundesanstalt Braunschweig und Berlin Test Report PTB Ex ....... S c h e d u l e (13) (14) EC TYPE EXAMINATION CERTIFICATE No. PTB 98 ATEX 2114 (15) Description of Equipment The Model 4746-2 and 4746-3... Limit Switches serve for converting mechanical manipulated variables into electrical signals.
- Page 74 Physikalisch-Technische Bundesanstalt Braunschweig und Berlin Test Report PTB Ex ....... Maximum values: 45 V The effective internal capacitances and inductances are negligible. (16) Report PTB Ex 98-28184 (17) Special conditions for safe use Not applicable (18) Essential Health and Safety Requirements In compliance with standards Zertifizierungsstelle Explosionsschutz Braunschweig, 03.09.98...
- Page 75 PTB 02 ATEX 2012 X Equipment: Model 4746-8 . . . Limit Switch Manufacturer: SAMSON AG Mess- und Regeltechnik Address: Weismüllerstr. 3, 60314 Frankfurt am Main, Germany The equipment and any acceptable variation thereof are specified in the schedule to this certificate and the documents referred to therein.
- Page 76 Physikalisch-Technische Bundesanstalt Braunschweig und Berlin S c h e d u l e (13) Statement of Conformity PTB 02 ATEX 2012 X (14) (15) Description of Equipment The Model 4746-8 . . . Limit Switch servers for converting mechanical manipulated variables into electrical signals.
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- Page 81 Addendum Page 5 Installation Manual for apparatus approved by FM for use in hazardous locations. Electrical rating of intrinsically safe apparatus and apparatus for installation in hazardous locations. Table 1: Maximum values or V or I or P 16 V 25/52 mA 64/169 mW 60 nF...
- Page 82 Addendum Page 6 Table 4: For the Model 4746 – 32 Limit Switch with type SJ3,5… sensors the correlation between temperature classification, permissible ambient temperature ranges and maximum short- circuit current is shown in the table below: Temperature class Permissible ambient Maximum temperature range short-circuit current...
- Page 83 Addendum Page 7 HAZARDOUS SAFE LOCATION LOCATION Terminal No. electrical limit switch Model 4746-33 inductive limit switch Model 4746-32 relay or inductive limit switch transistor output Model 4746-32 electrical limit switch Model 4746-33 supply barrier evaluation barrier supply barrier evaluation barrier I.S.Ground Version: Model 4746-33 Electrical Limit Switch.
- Page 84 Addendum Page 8 Notes: For the maximum values for the individual circuits see Table 1 and 2. Cable entry M 20 x 1.5 metal conduit according to drawing No. 1050-0539 T and 1050-0540 T The installation shall be in accordance with the National Electrical Code ANSI/NFPA 70 Installation drawing Control Relay Hab –...
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Page 85: Annex
You can reach our after-sales service at aftersalesservice@samsongroup.com. Addresses of SAMSON AG and its subsid- iaries The addresses of SAMSON AG, its subsid- iaries, representatives and service facilities worldwide can be found on our website (www.samsongroup.com) or in all SAMSON product catalogs. Required specifications Please submit the following details: −... - Page 86 15-2 EB 8365 EN...
- Page 90 EB 8365 EN SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samsongroup.com · www.samsongroup.com...