IEC 60079-27:2008

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
  3.1 Terms and definitions
  3.2 Abbreviations
4 Apparatus requirements
  4.1 General
  4.2 FISCO power supplies
      4.2.1 General
      4.2.2 Additional requirements of "ia" and "ib" FISCO
            power supplies
      4.2.3 Additional requirements of "ic" FISCO power supplies
  4.3 FISCO field devices
      4.3.1 General
      4.3.2 Additional requirements of "ia" and "ib" FISCO field
            devices
      4.3.3 Additional requirement of "ic" FISCO field devices
  4.4 Terminator
  4.5 Simple apparatus
  4.6 Marking
  4.7 Examples of marking
5 System requirements
  5.1 General
  5.2 Additional requirements of "ic" FISCO systems
Annex A (informative) Typical system
Bibliography

This part of IEC 60079 contains the details of apparatus, systems and installation practice for use with the Fieldbus Intrinsically Safe Concept (FISCO). It is based on the concepts of Manchester encoded, bus powered systems designed in accordance with IEC 61158-2 which is the physical layer standard for Fieldbus installations. The significant change with respect to the first edition is that this standard replaces the FNICO requirements with the requirements of an "ic" FISCO system.