Pepperl+Fuchs NCN3-F31K2 Series Manual

Pepperl+Fuchs NCN3-F31K2 Series Manual

Functional safety inductive dual sensor

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FACTORY AUTOMATION
MANUAL
Functional Safety
Inductive Dual Sensor
NCN3-F31K2(M)-N*-B*3-S
ISO9001
2

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Summary of Contents for Pepperl+Fuchs NCN3-F31K2 Series

  • Page 1 FACTORY AUTOMATION MANUAL Functional Safety Inductive Dual Sensor NCN3-F31K2(M)-N*-B*3-S ISO9001...
  • Page 2 Functional Safety NCN3-F31K2(M)-N*-B*3-S With regard to the supply of products, the current issue of the following document is applicable: The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship"...
  • Page 3: Table Of Contents

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Content Introduction ........... 4 Content of this Document.
  • Page 4: Introduction

    Additionally, the following parts may belong to the documentation, if applicable: • EU-type examination certificate • EU declaration of conformity • Attestation of conformity • Certificates • Control drawings • FMEDA report • Assessment report • Additional documents For more information about Pepperl+Fuchs products with functional safety, see www.pepperl-fuchs.com/sil.
  • Page 5: Safety Information

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Introduction Safety Information Target Group, Personnel Responsibility for planning, assembly, commissioning, operation, maintenance, and dismounting lies with the plant operator. Only appropriately trained and qualified personnel may carry out mounting, installation, commissioning, operation, maintenance, and dismounting of the product. The personnel must have read and understood the instruction manual and the further documentation.
  • Page 6: Symbols Used

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Introduction Symbols Used This document contains symbols for the identification of warning messages and of informative messages. Warning Messages You will find warning messages, whenever dangers may arise from your actions. It is mandatory that you observe these warning messages for your personal safety and in order to avoid property damage.
  • Page 7: Product Description

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Product Description Product Description Function General The device is an inductive dual sensor. Dual sensors are used, for example, to detect the final positions of valve positions in valve actuators. Inductive dual sensors consist of 2 sensor circuits arranged one above the other. Each sensor has its own coil.
  • Page 8: Marking

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Product Description Marking Pepperl+Fuchs Group Lilienthalstraße 200, 68307 Mannheim, Germany Internet: www.pepperl-fuchs.com NCN3-F31K2-N4-B13-S Up to SIL 2 NCN3-F31K2-N4-B33-S NCN3-F31K2M-N4-B13-S NCN3-F31K2M-N4-B23-S NCN3-F31K2-N5-B13-S NCN3-F31K2-N5-B33-S Standards and Directives for Functional Safe Device-specific standards and directives Functional safety IEC/EN 61508, part 1 – 2, edition 2010:...
  • Page 9: Planning

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Planning Planning System Structure 3.1.1 Low Demand Mode of Operation If there are two control loops, one for the standard operation and another one for the functional safety, then usually the demand rate for the safety loop is assumed to be less than once per year.
  • Page 10: Assumptions

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Planning Assumptions The following assumptions have been made during the FMEDA: • Failure rate based on the Siemens standard SN 29500. • Failure rates are constant, wear is not considered. • External power supply failure rates are not included. •...
  • Page 11: Safety Function And Safe State

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Planning Safety Function and Safe State Safe State The safe state of the device is the high impedance state (low current). Applications with control units or safety functions where the safe state is the low impedance state (high current) were not evaluated. Safety Function Figure 3.1 Distance values for the design of the safety function (abstract figure)
  • Page 12: Characteristic Safety Values

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Planning Characteristic Safety Values Parameter Characteristic values Assessment type and Full assessment documentation Device type Mode of operation Low Demand Mode or High Demand Mode Safety function High impedance state, depending on the position of the measuring plate in combination with a control unit according to EN 60947-5-6 (NAMUR) 107 FIT ...
  • Page 13: Useful Lifetime

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Planning Useful Lifetime Although a constant failure rate is assumed by the probabilistic estimation this only applies provided that the useful lifetime of components is not exceeded. Beyond this useful lifetime, the result of the probabilistic estimation is meaningless as the probability of failure significantly increases with time.
  • Page 14: Mounting And Installation

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Mounting and Installation Mounting and Installation Mounting and Installing the Device 1. Observe the safety instructions in the instruction manual. 2. Observe the information in the manual. 3. Observe the requirements for the safety loop. 4. Connect the device only to devices that are suitable for this safety application. 5.
  • Page 15: Operation

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Operation Operation Danger! Danger to life from missing safety function If the safety loop is put out of service, the safety function is no longer guaranteed. • Do not deactivate the device. • Do not bypass the safety function. •...
  • Page 16: Maintenance And Repair

    Functional Safety NCN3-F31K2(M)-N*-B*3-S Maintenance and Repair Maintenance and Repair Danger! Danger to life from missing safety function Changes to the device or a defect of the device can lead to device malfunction. The function of the device and the safety function is no longer guaranteed. Do not repair, modify, or manipulate the device.
  • Page 17: List Of Abbreviations

    Functional Safety NCN3-F31K2(M)-N*-B*3-S List of Abbreviations List of Abbreviations Diagnostic Coverage of dangerous faults Failure In Time in 10 FMEDA Failure Mode, Effects, and Diagnostics Analysis Probability of safe failure  Probability of dangerous detected failure  Probability of dangerous undetected failure ...
  • Page 18 Twinsburg, Ohio 44087 · USA Tel. +1 330 4253555 E-mail: sales@us.pepperl-fuchs.com Asia Pacific Headquarters Pepperl+Fuchs Pte Ltd. Company Registration No. 199003130E Singapore 139942 Tel. +65 67799091 E-mail: sales@sg.pepperl-fuchs.com www.pepperl-fuchs.com Subject to modifications DOCT-6036B Copyright PEPPERL+FUCHS • Printed in Germany 11/2019...

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