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14 mm finger-protection tier of Balluff's BLG 4A Type 4 safety light curtain, 150-1800 mm protective field heights, up to 6 m range, PLe/SIL 3.
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The BLG 4A is Balluff's economical Type 4 safety light curtain line for hazardous-area safeguarding, offered across finger-, hand- and body-protection resolution tiers on a shared M12-connector platform. This artifact represents the 14 mm resolution (finger-protection) tier at a representative 900 mm protective field height (order code BLG000J); the same tier spans 150-1800 mm in the vendor's standard height ladder. PLe (EN ISO 13849-1) / SIL CL 3 (EN/IEC 62061), ESPE Type 4 per IEC 61496-1/-2. Semiconductor OSSD outputs, M12 4-pin (emitter) / 5-pin (receiver) connectors. Balluff's BLG line has offered IO-Link connectivity (Safety over IO-Link module) since at least 2018; the backlog research note for this family additionally states IO-Link Safety was added November 2024, which could not be independently confirmed from the datasheets reached this pass (see _notes).
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