BS IEC 61496-2:1997

Foreword
      Introduction
1 Scope
2 Normative references
3 Definitions
4 Functional, design and environmental requirements
      4.1 Functional requirements
      4.2 Design requirements
      4.3 Environmental requirements
5 Testing
      5.1 General
      5.2 Functional tests
      5.4 Environmental tests
6 Marking for identification and safe use
      6.1 General
7 Accompanying documents
Figure 1 - Extraneous reflection
Figure 2 - AOPD misalignment
Figure 3 - Analysis and tests of AOPDs - Flow chart
Figure 4 - Test piece at 45degree
Figure 5 - Test piece at 90degree
Figure 6 - Measurement of the effective aperture angle (EAA)
Figure 7 - Measuring method for EAA (tilt)
Figure 8 - Measuring method for EAA (direction)
Figure 9 - Light interference test - Direct method
Figure 10 - Light interference test - Beam splitter method
Figure 11 - Light interference test - Mirror and masking method
Index

Deals with criteria for design, construction and test of electro-sensitive protective equipment (ESPE) for protection of machinery using active opto-electronic protective devices (AOPDs) for the sensing function. Particular attention is aimed at features that ensure that a suitable safety related performance is met. Dimensions or configurations of the detection zone and disposition relating to hazardous parts for a particular application, or hazardous state of a machine are not defined. AOPDs using radiation at wavelengths outside the 400 nm to 1500 nm range are not included. EMC emission requirements are not covered.