Functional Safety Certification for Machine Vision Safety Systems: IEC 61496-2 Explained

Date
2027-04-19
Location
Online
Host
Zach L

About this event

A Hands-On Lab for Safety Consultants pursuing functional safety certification. A live 30-minute hands-on lab on IEC 61496-2 (Active Optoelectronic Protective Devices) for machine vision safety systems, built for safety consultants pursuing functional safety certification. What We'll Cover: What IEC 61496-2 (Active Optoelectronic Protective Devices) requires and how its scope applies to machine vision safety systems Mapping IEC 61496-2 clauses to the certification evidence assessors expect System-specific hazards and safety functions typical of machine vision safety systems Common findings that delay certification, and how to avoid them A practical readiness roadmap for safety consultants preparing for assessment Related topics: IEC 61496-2 · Machine Vision Safety Systems · functional safe

Topics

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About IEC 61496-2 (Active Optoelectronic Protective Devices)

This hands-on workshop builds applied knowledge and team exercises around the certification requirements of IEC 61496-2.

IEC 61496-2 is the technology part for AOPDs — light curtains and multi-beam barriers using through-beam interruption — adding optical performance, detection capability, and test requirements to the part-1 framework.

What it regulates

Detection capability definition (resolution), effective aperture angle limits, immunity to reflective surfaces and mutual interference, beam coding, and the test methods proving them.

Who must comply

Light-curtain manufacturers; integrators verifying resolution and mounting against ISO 13855 distances and reflective-surface geometry.

Key requirements of IEC 61496-2

  • Resolution classes and their verification (test pieces)
  • EAA (effective aperture angle) constraints preventing reflection bypass
  • Requirements for reduced resolution/blanking and their marking
  • Range, misalignment and dirty-lens behavior

Key concepts: IEC 61496-2

Beam coding
Modulation preventing cross-talk between adjacent curtains.
Detection capability
The smallest object reliably detected everywhere in the field — the resolution used to pick the C-addition.
Floating blanking
Deliberately tolerated moving obstructions (like material feed) with resolution consequences that must be recalculated.
Reflection bypass
A false safe condition caused by shiny surfaces redirecting beams around an object — controlled via EAA and mounting clearances.

Frequently asked questions: IEC 61496-2

What changes when blanking is enabled?

Effective resolution coarsens, so the safety distance must be recomputed with the larger C value, and the configuration must be marked and documented on the device per the standard.

Why does mounting near shiny surfaces need clearance checks?

Reflected beams can keep the OSSD on while an object blocks the direct path; part 2 defines the aperture and clearance geometry to exclude this failure.

Standard information based on the published text of IEC 61496-2 (Active Optoelectronic Protective Devices). Event content is provided by the host. For authoritative guidance, consult the official standard body.