GB/T 41997.2-2022 Electrical safety of machinery—Vision based electro-sensitive protectiveequipment—Part 2:Particular requirements for devices using passive reference patterns

Scope

This document specifies the design, manufacture, and testing requirements for electrically sensitive protection devices (ESPEs) that adopt the reference mode visual protection device. It describes the special requirements for sensitive functions of electrically sensitive protection devices using a passive reference mode. This document is limited to the function of ESPEs and their mechanical connection methods. Vision-based reference mode electrically sensitive protection devices (VBPDPPs) consist of a single image-sensitive device that uses a passive reference mode as a background. The detection principle is based on blocking or partially obstructing the field of view. No information about the object's thickness, shape, surface characteristics, or position is required during detection. Note: This document does not include multi-image sensor devices. This document applies to: -- Vision-based automatic ESPEs that do not require human intervention for detection; -- Vision-based automatic ESPEs that detect objects entering or existing within the detection zone; -- VBPDPPs with a detection capability of up to 200 mm. This document does not apply to: -- VBPDs that use radiation wavelengths exceeding 400 nm to 1,500 nm. This document does not address: -- The size or configuration of the detection zone and its configuration related to the dangerous components of any specific application; -- Any mechanical hazardous states; -- Requirements for complex classification or differentiation of the objects being detected; -- Electromagnetic compatibility (EMC) emission requirements.

Development Information

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Referenced Standards

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