Specifies sensing functions, normal operation, and critical response time limits.
The standard is divided into several critical areas to ensure high reliability in industrial environments: Requirements & Features iec 61496-1 pdf
It does not specify the exact dimensions of detection zones or what constitutes a "hazardous state" for a specific machine; those details are covered by application-specific standards like ISO 12100. Key Technical Requirements Specifies sensing functions
Covers electrical supply, fault detection, Output Signal Switching Devices (OSSDs) , and measures against common-cause failures. Output Signal Switching Devices (OSSDs)