Samson EB 3773 Series Mounting And Operating Instructions
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Samson EB 3773 Series Mounting And Operating Instructions

Samson EB 3773 Series Mounting And Operating Instructions

Limit switch
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EB 3773 EN
Translation of original instructions
Type 3773 Limit Switch
Edition November 2021

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Summary of Contents for Samson EB 3773 Series

  • Page 1 EB 3773 EN Translation of original instructions Type 3773 Limit Switch Edition November 2021...
  • 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.

  • Page 3: Table Of Contents

    Contents Safety instructions and measures ..............1-1 Notes on possible severe personal injury ............1-3 Notes on possible personal injury ..............1-3 Notes on possible property damage .............1-4 Markings on the device ................2-1 Nameplate ....................2-1 Article code ....................2-2 Design and principle of operation ...............3-1 Technical data ....................3-3 Dimensions in mm ..................3-6 Shipment and on-site transport ..............4-1...
  • Page 4 Contents Repairs ....................12-1 12.1 Returning devices to SAMSON ..............12-1 Disposal ....................13-1 Certificates and instructions concerning explosion protection ......14-1 14.1 Certificates ....................14-1 14.2 Instructions concerning explosion protection ..........14-1 Annex......................15-1 15.1 After-sales service ..................15-1 EB 3773 EN...

  • Page 5: Safety Instructions And Measures

    In case operators intend to use the limit switch in other applications or condi- tions 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 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.

  • Page 7: 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...

  • Page 8: Notes On Possible Property Damage

    Safety instructions and measures 1.3 Notes on possible property damage NOTICE Disruption to the process Î Do 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...

  • Page 9: Markings On The Device

    0044 See technical data for ambient temperature Model 3773- Var.-ID * For further values see Addendum to EB 3773 EN Serial no. SAMSON AG , Germany Made in Germany Model 3773- Version with electric microswitches Var.-ID Serial no. SAMSON AG D-60314 Frankfurt...

  • Page 10: Article Code

    Markings on the device 2.2 Article code Limit switch Type 3773- x x x x x x x x x x 0 x x x 0 0 0 x x Explosion protection Without 0 0 0 ATEX: II 2G Ex ia IIC T4/T6 Gb 1 1 0 II 2D Ex ia IIIB T95°C Db IECEx: Ex ia IIC T4/T6 Gb 1 1 1...
  • Page 11 Markings on the device Limit switch Type 3773- x x x x x x x x x x 0 x x x 0 0 0 x x Permissible ambient temperature –25 to +80 °C (+65 °C in T6) Hardware version Index: 00 EB 3773 EN...
  • Page 12 EB 3773 EN...

  • Page 13: Design And Principle Of Operation

    Design and principle of operation 3 Design and principle of to a switching point between 0 and 100° at the adjustment screws (3). operation Terminal versions The Type 3773 Limit Switch is suitable for Depending on the ordering specifications, mounting on rotary actuators according to the limit switch has screw terminals or cage VDI/VDE 3845, level 1 and level 2. It is fit- clamp terminals.
  • Page 14 Design and principle of operation Version with inductive proximity Version with electric switches microswitches Fig. 3-2: Versions of the Type 3773 Limit Switch Legend for Fig. 3-1 and Fig. 3-2: Shaft Terminals (screw terminals in this example) Adjustment screws Proximity switch Metal tag Microswitch Cam disk EB 3773 EN...

  • Page 15: Technical Data

    Design and principle of operation 3.1 Technical data Table 3-1: Technical data of Type 3773 Limit Switch Type 3773 Limit Switch Angle of rotation 0 to 100° Electromagnetic compatibility Complying with EN 61000-6-2, EN 61000-6-3 and NAMUR Recommendation NE 21 Degree of protection IP 65 Explosion protection Type of protection II 2/3 G/D Ex ia T6 Electrical connection 1x cable gland M20x1.5 Number of contacts...
  • Page 16 Design and principle of operation Limit contact in type of protection Ex ia IIC for use in hazardous areas (Zone 1) Version Output voltage 16 V DC Output current 52 mA Power dissipation 169 mW Outer capacitance 150 nF 30 nF Outer inductance 150 µH 100 µH Temperature –40 °C ≤ Ta ≤ +45 °C The permissible ambient temperature depends on the permissible ambient temperature of the components, type of protection and temperature class.
  • Page 17 Design and principle of operation Table 3-4: Summary of explosion protection approvals Certification Type of protection/comments EU type examina- Number TÜV 18 ATEX 8323 X II 2G Ex ia IIC T4/T6 Gb tion certificate II 2D Ex ia IIIB T95°C Db Date 2019-04-13 Number IECEx TUR 19.0010X Ex ia IIC T4/T6 Gb IECEx Ex ia IIIB T95°C Db Date...

  • Page 18: Dimensions In Mm

    Design and principle of operation 3.2 Dimensions in mm EB 3773 EN...

  • Page 19: Shipment And On-Site Transport

    SAMSON and the forwarding agent Î Observe the storage instructions. (refer to delivery note). Î Avoid long storage times. Î Contact SAMSON in case of different 4.2 Removing the packaging storage conditions. from the limit switch Observe the following sequence: Note Î...
  • Page 20 Shipment and on-site transport − 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).

  • Page 21: Installation

    Installation 5 Installation Mounting orientation The limit switch may be installed in any posi- The work described in this section is only to tion. be performed by personnel appropriately qualified to carry out such tasks. 5.2 Preparation for installation 5.1 Installation conditions Before mounting, make sure the following conditions are met: Work position −...

  • Page 22: Mounting The Limit Switch

    Installation 5.3 Mounting the limit switch The Type 3773 Limit Switch is suitable for mounting on rotary actuators according to VDI/VDE 3845, level 1 and level 2. 5.3.1 Attachment according to VDI/VDE 3845, level 1 Î See Table 5-1 for required accessories Î See Fig. 5-1 1. Use the disk springs and cap screws to fasten the mounting bracket onto the in- ner holes on the actuator.

  • Page 23: Electrical Connections

    Installation 5.4 Electrical connections WARNING Incorrect electrical connection will render DANGER the explosion protection unsafe. Risk of fatal injury due to the ignition of an Î Adhere to the terminal assignment and explosive atmosphere. observe correct polarity. Î For mounting and electrical installation in Î...
  • Page 24 Installation Version with electric microswitches Version with inductive proximity switches 42 41 52 51 +41 –42 –52 Fig. 5-3: Terminal assignment of the terminals Version with cage clamp terminals Version with screw terminals Fig. 5-4: Terminal versions EB 3773 EN...

  • Page 25: Start-Up

    Start-up 6 Start-up 6.1 Adjusting the limit contacts The work described in this section is only to The Type 3773 Limit Switch is fitted with two be performed by personnel appropriately inductive proximity switches or two electric qualified to carry out such tasks. microswitches (depending on the version). For most applications the contacts are adjust- DANGER ed to issue a signal when the actuator has Risk of fatal injury due to the ignition of an...
  • Page 26 Start-up Switching point shift due to temperature changes The limit contacts and their operating ele- ments react to temperature changes. To ensure reliable switching, the switching hysteresis between the actuator's switching position and the limit contact's switching point must be larger than the switching point shift caused by the temperature change.

  • Page 27: 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 28 EB 3773 EN...

  • Page 29: 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 30 EB 3773 EN...

  • Page 31: Servicing

    Î Ensure that the device, cables and other Note plant components cannot rub against The limit switch was checked by SAMSON each other. before it left the factory. − The product warranty becomes void if ser-...

  • Page 32: Servicing Explosion-Protected Devices

    Servicing − Only use original spare parts by Replace explosion-protected components on- SAMSON, which comply with the original ly with original, routine-tested components specifications. by the manufacturer. Devices that have already been operated outside hazardous areas and are intended 9.1 Servicing explosion- for future use inside hazardous areas must protected devices comply with the safety requirements placed on serviced devices.

  • Page 33: Preparation For Return Shipment

    Proceed as follows to return devices to SAMSON: 1. Remove the limit switch (see the 'Remov- al' section). 2. Send the limit switch to your nearest SAMSON subsidiary. SAMSON subsid- iaries are listed on our website at u www.samsongroup.com > Contact. 9.4 Cleaning the housing cover NOTICE Incorrect cleaning will damage the housing cover.
  • Page 34 Action to be taken in the event of a negative re- sult 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 35: Decommissioning

    Decommissioning 10 Decommissioning To decommission the limit switch, proceed as follows: The work described in this section is only to 1. Disconnect the electrical power supply. be performed by personnel appropriately 2. Open the limit switch cover and discon- qualified to carry out such tasks. nect the wires for the power supply.
  • Page 36 10-2 EB 3773 EN...

  • Page 37: Removal

    Removal 11 Removal 2. Remove the wires for the power supply from the limit switch. The work described in this section is only to 3. To remove the limit switch, loosen the two be performed by personnel appropriately fastening screws on the device. qualified to carry out such tasks.
  • Page 38 11-2 EB 3773 EN...

  • Page 39: 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 40 12-2 EB 3773 EN...

  • Page 41: Disposal

    Disposal 13 Disposal We are registered with the German 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 42 13-2 EB 3773 EN...

  • Page 43: Certificates And Instructions Concerning Explosion Protection

    14.1 Certificates The following certificates are included on the next pages: − EU type examination certificate for Type 3773-110 − IECEx certificate for Type 3773-111 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 3773 14.2 Instructions concerning explosion protection The instructions stipulated by SAMSON for the explosion protection of the Type 3773 Limit Switch are based on the above listed certificates. EB 3773 EN 14-1...
  • Page 44 14-2 EB 3773 EN...
  • Page 45 EB 3773 EN 14-3...
  • Page 46 14-4 EB 3773 EN...
  • Page 47 EB 3773 EN 14-5...
  • Page 48 14-6 EB 3773 EN...
  • Page 49 EB 3773 EN 14-7...
  • Page 50 14-8 EB 3773 EN...
  • Page 51 EB 3773 EN 14-9...
  • Page 52 14-10 EB 3773 EN...
  • Page 53 EB 3773 EN 14-11...
  • Page 54 14-12 EB 3773 EN...
  • Page 55 EB 3773 EN 14-13...
  • Page 56 14-14 EB 3773 EN...
  • Page 57 EXPLOSION PROTECTION INSTRUCTIONS · TYPE 3773 1 Safety instructions for ATEX and IECEx The following safety instructions and safety-related notes must be included in the operating and mounting instructions as required according to Clause 30 of IEC/EN 60079-0 and the Directive 2014/34/EU.
  • Page 58 EXPLOSION PROTECTION INSTRUCTIONS · TYPE 3773 Selecting cables and wires Observe the relevant clauses of EN 60079-14 for installation of intrinsically safe circuits. Seal cable entries left unused with plugs. 1.2 Servicing explosion-protected devices If a part of the device on which the explosion protection is based needs to be serviced, the de- vice must not be put back into operation until a qualified inspector has assessed it according to explosion protection requirements, has issued an inspection certificate, or given the device a mark of conformity.
  • Page 59 EXPLOSION PROTECTION INSTRUCTIONS · TYPE 3773 2 Explosion protection data ATEX: II 2 G Ex ia IIC T6 Gb/II 2 D Ex ia IIIB T 95 °C IECEx: Ex ia IIC T6 Gb/Ex ia IIIB T 95 °C Db 2.1 Signal current circuit Inductive limit contacts Terminals +41/–42 and +51/–52 Type of protection: Ex ia IIC/IIIB...
  • Page 60 EXPLOSION PROTECTION INSTRUCTIONS · TYPE 3773 2.2 Temperatures 2.2.1 Intrinsic safety Ex ia IIC Inductive limit contacts in type of protection intrinsic safety Ex ia IIC Type designation Temperature class Type Permissible ambient temperature Ta –40 °C ≤ Ta ≤ +80 °C –40 °C ≤...
  • Page 61 The dust protection of the microswitches is ensured through intrinsic safety of Group IIC accord- ing to Clause 5.5 of EN 60079-11/IEC 60079-11. The temperature rise of the microswitches is negligible. Note The associated certificates can be found on our website (www.samson.de > Products & Applica- tions > Product selector). EX 3773 Version 2019-03-21...
  • Page 62 14-20 EB 3773 EN...

  • Page 63: 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.
  • Page 64 15-2 EB 3773 EN...
  • Page 68 EB 3773 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...

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