{"product_id":"yokogawa-snt401-53-optical-esb-bus-repeater-master-module","title":"Yokogawa SNT401-53 Optical ESB Bus Repeater Master Module","description":"\u003ch2\u003eYokogawa SNT401-53 Optical ESB Bus Repeater Master Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SNT401-53\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSNT401\u003c\/strong\u003e Optical ESB Bus Repeater Master Module, operates as a dedicated hardware component for electrical-to-optical safety bus signal transport within the ProSafe-RS Safety Instrumented System.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa SNT401-53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.30 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.2 cm (W) x 12.4 cm (H) x 12.6 cm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003e-20 degC to 70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003e0.5 A at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eElectrical-to-optical ESB bus signal conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTopologySupport\u003c\/td\u003e\n\u003ctd\u003eStar type, Chain type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaxConnectingStages\u003c\/td\u003e\n\u003ctd\u003e2 stages\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmissionDistance\u003c\/td\u003e\n\u003ctd\u003eUp to 5 km (standard), up to 10 km with Vnet\/IP R1.03+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectorType\u003c\/td\u003e\n\u003ctd\u003eFiber optic connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignalType\u003c\/td\u003e\n\u003ctd\u003eDigital optical signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eFull galvanic isolation between nodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmentalProtection\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003e\u003cstrong\u003eProcess Control Connectivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports \u003cstrong\u003echannel-to-channel isolation\u003c\/strong\u003e to prevent signal interference across multiple ESB bus connections. It maintains 4-20 mA HART loop protocol integrity for downstream safety nodes and is compatible with FOUNDATION Fieldbus and Profibus PA systems. Optical conversion ensures minimal propagation delay while maintaining digital signal fidelity across maximum distance spans.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eQ: Can the SNT401-53 be hot-swapped on an active safety bus?\u003cbr\u003eA: The module is not designed for hot-swap replacement. Power down the backplane before insertion or removal to avoid signal disruption.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum allowable current draw on the backplane when using dual-redundant SNT401-53 modules?\u003cbr\u003eA: Each module draws up to 0.5 A at 24 VDC; redundancy does not exceed the rated backplane capacity if installed per specification.\u003c\/p\u003e\n\u003cp\u003eQ: Are firmware upgrades required for compatibility with Vnet\/IP R1.03 or later systems?\u003cbr\u003eA: No firmware upgrade is required; the optical repeater functions natively with Vnet\/IP systems R1.03 or later.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eField Installation Guidelines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMount modules on a standard panel using the included mounting hardware; ensure secure mechanical attachment.\u003c\/li\u003e\n\u003cli\u003eRoute fiber optic cabling to avoid sharp bends or mechanical stress. Minimum bend radius must comply with fiber specifications.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding and shielding for surrounding electrical circuits to prevent EMI interference on adjacent bus components.\u003c\/li\u003e\n\u003cli\u003eAvoid routing power and optical fibers in the same conduit unless separated by an insulating barrier.\u003c\/li\u003e\n\u003cli\u003eVerify alignment and cleanliness of fiber connectors prior to system commissioning.\u003c\/li\u003e\n\u003cli\u003eConfirm dual-redundant configuration cabling before energizing backplane to ensure fail-safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44165705891928,"sku":"SNT401-53","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/SNT401-53-3.jpg?v=1780366592","url":"https:\/\/www.industriaxplc.com\/id\/products\/yokogawa-snt401-53-optical-esb-bus-repeater-master-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}