Samson 4747 Mounting And Operating Instructions
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Samson 4747 Mounting And Operating Instructions

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

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  • Page 1 EB 4747 EN Translation of original instructions Type 4747 Limit Switch Edition January 2019...
  • Page 2 Î For the safe and proper use of these instructions, read them carefully and keep them for later reference. Î If you have any questions about these instructions, contact SAMSON‘s After-sales Service Department (aftersalesservice@samson.de). The mounting and operating instructions for the devices are included in the scope of delivery.

  • Page 3: Table Of Contents

    Measures for preparation ................20 4.1 Unpacking ....................20 4.2 Transporting ....................20 4.3 Storage .......................20 Mounting ....................20 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-flow 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 EB 4747 EN...
  • Page 4 Adjusting the switching point ................36 Servicing.....................37 8.1 Servicing explosion-protected devices ............37 Preparation for return shipment ..............38 Malfunctions ....................39 Emergency action ..................40 Decommissioning and removal ..............40 10.1 Decommissioning ..................40 10.2 Removing the limit switch ................40 10.3 Disposal ......................40 Appendix ....................41 11.1 After-sales service ..................41 EB 4747 EN...

  • 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 de- vice for its intended purpose or for damage caused by external forces or any other external factors.
  • Page 6 Operating personnel must read and understand these mounting and operating instructions as well as the specified 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 fulfill 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...

  • Page 7: Notes On Possible Severe Personal Injury

    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. Î In hazardous areas (with type of protection Ex t), mount the device in such a way that electrostatic charging cannot take place. EB 4747 EN...

  • Page 8: Notes On Possible Personal Injury

    Risk of malfunction due to incorrect mounting parts/accessories or incorrect assign- ment of lever and pin position. Î Only use mounting parts/accessories listed in these mounting and operating instruc- tions to mount the limit switch. Î Observe the type of attachment. Î Observe the assignment between lever and pin position. EB 4747 EN...

  • Page 9: Markings On The Device

    WARNING-POTENTIAL ELECTROSTATIC CHARGING HAZARD* * See EU Type Examination Certificate for further values Model 4747- Var.-ID Serial no. SAMSON AG D-60314 Frankfurt Made in Germany SAMSON 4747 Reed magnetic switch WARNING-POTENTIAL ELECTROSTATIC CHARGING HAZARD* * See EU Type Examination Certificate for further values Model 4747- Var.-ID...

  • Page 10: Article Code

    Safety instructions and measures 2.2 Article code Limit Switch Type 4747 - x x x x x x x x x x 0 x x x x x Type of protection Without 0 0 0 II 2G Ex ia IIC T6 Gb ATEX 1 1 0 II 2D Ex tb IIIC T85°C Db IP 66 1Ex ia IIC T6/T5/T4 Gb...
  • Page 11 Safety instructions and measures Limit Switch Type 4747 - x x x x x x x x x x 0 x x x x x Number of contacts Switching angle < 100° adjustable Electrical connection M20x1.5 ½ NPT Degree of protection IP 66 Ambient temperature –25 to +80 °C (+65°C in T6)

  • Page 12: Design And Principle Of Operation

    Design and principle of operation 3 Design and principle of oper- 3.2 Type 4747-xxx1x Electric ation Limit Switch The limit switch is equipped with a maximum The limit switch has a maximum of two ad- of two inductive proximity switches or two justable metal cam disks (3) on the shaft (1). electric microswitches. For most applications The cam disk (3) activates the electric mi- the contacts are adjusted to issue a signal croswitch over the roller on the switch lever.
  • Page 13 Design and principle of operation Terminal block Adjustment screw Cam disk or metal tag Shaft Fig. 1: Type 4747 Limit Switch EB 4747 EN...

  • Page 14: Accessories

    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 Mounting kit for SED diaphragm valves (both mounting kits are required) 1400-7472 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-flow Valve with 60 or 120 cm² actuator area EB 4747 EN...

  • Page 15: Travel Tables

    Direct attachment to Type 3277-5 and Type 3277 Actuators Actuator area Rated travel Required Assigned pin lever position [cm²] [mm] 120/175/240/350 355/700/750 Attachment according to IEC 60534-6 (NAMUR rib) SAMSON valves with Type 3271 Other control Required Assigned pin Actuator valves lever position Actuator area Rated travel Max. travel [cm²]...

  • Page 16: Technical Data

    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 · Specifications 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 Permissible ambient temperature –40 to +80 °C...
  • Page 17 The listed technical data may be restricted by the limits specified in the test certificates. Î Refer to test certificates in the appendix. Limit switch Type 4747-11x01 Limit contacts Inductive Output voltage 16 V 16 V Output current 25 mA 52 mA Power dissipation 64 mW 169 mW Outer capacitance 100 nF Outer inductance 100 μH Permissible ambient temperature –25 to +80 °C –25 to +80 °C Permissible maximum values when connected to a certified intrinsically safe circuit. EB 4747 EN...

  • Page 18: Summary Of Explosion Protection Approvals

    RU C-DE.08.B.00117 1Ex d IIC T6/T5/T4 Gb X 4747-213 Ex tb IIIC T85°C Db X Date 2013-11-15 Number ZETC/25/2018 II 2G Ex d IIC T6, T5, T4 4747-216 STCC II 2D Ex tD A21 IP66 T80°C Date 2018-04-27 Number 3037212 XP/I/1/ABCD/T6 4747-230 DIP/II,III/EFG/T6 Date 2011-03-08 I/1/AEx d/IIC/T6 Type 4X, IP66 Number PTB 12 ATEX 2020 II 3G Ex nAc II T6 Gc 4747-810 ATEX II 3D Ex tc IIIC T85°C Dc IP66 Date 2013-04-26 Number RU C-DE.08.B.00117 2Ex nA IIC T6/T5/T4 Gc 4747-813 Ex tc IIIC T85°C Dc Date 2013-11-15 EB 4747 EN...

  • Page 19: Dimensions In Mm

    Design and principle of operation 3.7 Dimensions in mm EB 4747 EN...

  • Page 20: Measures For Preparation

    5 Mounting 4.2 Transporting The limit switch is suitable for the following types of attachment: − Protect the limit switch against external − Direct attachment to SAMSON influences (e.g. impact). Type 3277 Actuator − Protect the limit switch against moisture − Attachment to actuators according to and dirt.

  • Page 21: Mounting Position

    The travel that can be implemented at the valve is additionally restricted by the re- quired compression of the actuator springs. If a pin position other than position 35 with the standard M lever is required or a differ- ent lever size is required, proceed as follows (see Fig. 2): EB 4747 EN...

  • Page 22: Direct Attachment To Type 3277 And Type 3277-5 Actuators

    6. Mount cover (6) on the other side. Make sure that the vent plug faces downward (in cases where this is not possible, mount it in the horizontal position) when the control valve is installed to allow any condensed water that collects to drain off. EB 4747 EN...
  • Page 23 Mounting M lever Mounting plate Fastening screw Fastening screw Follower clamp Fastening screw Cover Vent plug Fig. 3: Mounting onto Type 3277 Actuator and Type 3277-5 Actuators EB 4747 EN...

  • Page 24: Attachment According To Iec 60534-6 (Namur Rib)

    5. Place the bracket with limit switch on the NAMUR rib of the valve in such a man- ner that the follower pin (7) rests in the slot of the follower plate (4). 6. Align the middle of the bracket to the 50 % marking on the travel indicator scale and fasten it using its screw (1) on- to the valve. EB 4747 EN...
  • Page 25 Mounting XL lever L lever Fastening screw Bracket M lever Bolt Follower plate XL lever L lever Follower pin (with XL lever: 1992-1825) Disk spring 10 Tab washer Fig. 4: Attachment according to IEC 60534-6 (NAMUR) EB 4747 EN...

  • Page 26: Attachment To Type 3510 Micro-Flow Valve

    4. Position the bracket (3) with the limit switch on the valve yoke and screw tight, making sure the follower pin (2) slides in- to the groove of the follower clamp (1). EB 4747 EN...
  • Page 27 Mounting Follower clamp Follower pin Bracket Disk spring Lever Tab washer Fig. 5: Attachment to Type 3510 Micro-flow Valve EB 4747 EN...

  • Page 28: Attachment According To Vdi/Vde 3845 To Rotary Actuators

    6. Fasten the limit switch onto the mounting plate (6). 7. Place the limit switch together with the mounting plate on the top bracket (5) and screw it tight. Taking the actuator's EB 4747 EN...
  • Page 29 Mounting 1 Lever 2 Follower clamp 3 Coupling wheel 4 Bottom pair of brackets 5 Top pair of brackets 6 Mounting plate Fig. 6: Attachment to rotary actuators according to VDI/VDE 3845 (light version) EB 4747 EN...

  • Page 30: Heavy-Duty Version

    5. Fasten coupling wheel (5) on the slotted actuator shaft or adapter (6) using screw (3) and disk spring (4). 6. Unscrew the standard follower pin from the limit switch's M lever (1). Attach the follower pin (Ø5 mm) included in the mounting kit to pin position 90°. EB 4747 EN...
  • Page 31 Mounting Lever Mounting plate Screw Disk spring Coupling wheel Adapter Enclosure Spacer Fig. 7: Attachment to rotary actuators according to VDI/VDE 3845 (heavy-duty version) EB 4747 EN...

  • Page 32: Electrical Connections

    Electrical connections 6 Electrical connections NOTICE The Type 4747 Limit Switch is designed to DANGER operate under exactly defined electrical con- Risk of fatal injury due to the formation of ditions. an explosive atmosphere. Only connect the limit switch to a suitable Incorrect installation, operation or power supply after mounting is completed.

  • Page 33: Electrical Connection For Type Of Protection Ex Ia

    The radial thickness of the insulation of a conductor for common insulating materials (e.g. polyethylene) must not be smaller than 0.2 mm. The diameter of an individual wire in a fine-stranded conductor must not be smaller than 0.1 mm. Protect the conductor ends against splicing, e.g. by using wire-end ferrules. Fit equipment used in ambient tem- peratures below –20 °C with metal cable glands. EB 4747 EN...

  • Page 34: Equipment With Type Of Protection Ex T

    6.4 Equipment for use in zone Electric microswitches 2/22 Fig. 8: Wiring plans In equipment operated according to type of protection Ex nA II (non-sparking equipment) according to EN 60079-15:2003, circuits may be connected, interrupted or switched while energized only during installation, maintenance or repair. Equipment connected to energy-limited cir- cuits with type of protection Ex nL (ener- EB 4747 EN...

  • Page 35: Switching Amplifier

    Electrical connections 6.6 Switching amplifier The operation of the Type 4747-xxx01 Limit Switch with inductive NAMUR limit contacts requires switching amplifiers to be connected in the output circuit. To ensure the operating reliability of the limit switch, the amplifiers should comply with the limits of the output circuits conforming to EN 60947-5-6. Observe the relevant regulations for installa- tion in hazardous areas. EB 4747 EN...

  • Page 36: Operation

    Turns of the adjustment screw x =  x =  4. Move the valve away from the switching position and check whether the output signal changes. 5. Move the valve back to the switching po- sition and check the switching point. EB 4747 EN...

  • Page 37: Servicing

    Î Retain testing and servicing documents as well as certificates issued by the man- ufacturer or inspector together with other Note safety-relevant documents for the device The limit switch was checked by SAMSON or plant. before it left the factory. Replace explosion-protected components on- − The product warranty becomes void if ser- ly with original, routine-tested components vice or repair work not described in these by the manufacturer.

  • Page 38: Preparation For Return Shipment

    See associated valve documentation. 2. Fill in the Declaration on Contamination. The declaration form can be download- ed from our website at u www.samson.de > Service & Support > After Sales Service. 3. Remove the limit switch. 4. Send the limit switch to your nearest SAMSON subsidiary. SAMSON subsid- iaries are listed on our website at u www.samson.de (About SAMSON >...

  • Page 39: Malfunctions

    9 Malfunctions Table 3 shows further troubleshooting. Table 3: Troubleshooting Description of fault Measures The limit switch does not issue an electrical Î Check the electrical connection. signal Î Check attachment. Actuator does not move. Î Check the attachment for possible blockage. Î Check the configuration of the mounting parts. The limit switch does not function Î Contact SAMSON's After-sales Service department. EB 4747 EN...

  • Page 40: Emergency Action

    Do not mount or service the limit switch and hazardous substances together with while the process is running and only after your other household waste. isolating the plant by closing the shut-off valves. On request, we can appoint a service pro- vider to dismantle and recycle the product. EB 4747 EN...

  • Page 41: Appendix

    You can reach the After-sales Service De- partment at aftersalesservice@samson. 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.samson.de) or in all SAMSON prod- uct catalogs.
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  • Page 49 EU Konformitätserklärung / EU Declaration of Conformity Für das folgende Produkt / For the following product Grenzsignalgeber / Limit Switch Typ / Type 4747 wird die Konformität mit den nachfolgenden EU-Richtlinien bestätigt / signifies compliance with the following EU Directives:...
  • Page 50 EU Konformitätserklärung / EU Declaration of Conformity Für das folgende Produkt / For the following product Grenzsignalgeber / Limit Switch Typ / Type 4747-110 entsprechend der EG-Baumusterprüfbescheingung PTB 12 ATEX 2020 ausgestellt von der/ according to the EU Type Examination PTB 12 ATEX 2020 issued by...
  • Page 51 Für das folgende Produkt / For the following product Grenzsignalgeber / Limit Switch Typ / Type 4747-210 entsprechend der EG-Baumusterprüfbescheingung PTB 09 ATEX 1113 X ausgestellt von der/ according to the EU Type Examination PTB 09 ATEX 1113 X issued by...
  • Page 52 EU Konformitätserklärung / EU Declaration of Conformity Für das folgende Produkt / For the following product Grenzsignalgeber / Limit Switch Typ / Type 4747-810 entsprechend der EG-Baumusterprüfbescheingung PTB 12 ATEX 2020 ausgestellt von der/ according to the EU Type Examination PTB 12 ATEX 2020 issued by...
  • Page 53 EB 4747 EN...
  • Page 56 EB 4747 EN SAMSON AKTIENGESELLSCHAFT Weismüllerstraße 3 · 60314 Frankfurt am Main, Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 samson@samson.de · www.samson.de...

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