It defines four type classes (Type 1 through Type 4) that correspond to specific Performance Levels (PL) from ISO 13849-1 and Safety Integrity Levels (SIL) from IEC 62061 .
The standard is the primary international document governing the general requirements and testing procedures for Electro-Sensitive Protective Equipment (ESPE) used in industrial machinery safety. iec 61496-1 pdf
At its core, is the general standard for safety-related sensors. It covers the requirements for the design, construction, and testing of devices that detect human presence using active opto-electronic means—most commonly light curtains , laser scanners , and safety camera systems . It defines four type classes (Type 1 through
: Annex A lists optional safety features like External Device Monitoring (EDM), restart interlocks, and muting. Safety Type Classifications It covers the requirements for the design, construction,
It added Type 3 ESPE, which allows for applications up to Performance Level d .