IEC 61496-3:2008

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
  4.1 Functional requirements
  4.2 Design requirements
  4.3 Environmental requirements
5 Testing
  5.1 General
  5.2 Functional tests
  5.3 Performance testing under fault conditions
  5.4 Environmental tests
6 Marking for identification and for safe use
  6.1 General
7 Accompanying documents
Annex A (normative) Optional functions of the ESPE
Annex B (normative) Catalogue of single faults affecting the
        electrical equipment of the ESPE, to be applied as
        specified in 5.3
Annex AA (informative) Examples of the use of an AOPDDR
         in different applications
Annex BB (informative) Relationship between ranging accuracy
         and probability of detection
Bibliography

It specifies additional requirements for the design, construction and testing of non-contact electro-sensitive protective equipment (ESPE) designed specifically to detect persons as part of a safety related system, employing active opto-electronic protective devices responsive to diffuse reflection (AOPDDRs) for the sensing function. Special attention is directed to requirements which ensure that an appropriate safety-related performance is achieved. An ESPE may include optional safety-related functions, the requirements for which are given both in Annex A of this part and in Annex A of IEC 61496-1. The important changes and improvements compared to the first edition of this part of the standard are:
- extension of the range of detection capability covered by this part of the standard from 50 mm to 100 mm to the range of 30 mm to 200 mm;
- clarification of requirements for the selection of multiple detection zones (Clause A.10);
- more detailed information about the use of an AOPDDR as a whole body trip device by extension of Clause A.12 and a new Clause A.13;
- improved description of the relationship between ranging accuracy and probability of detection (Annex BB).