{"product_id":"yokogawa-ant401-50-s1-optical-esb-bus-repeater-master-module","title":"Yokogawa ANT401-50 S1 Optical ESB Bus Repeater Master Module","description":"\u003cp\u003eConfigured for high-speed deterministic bus extension in Centum VP control systems, the \u003cstrong\u003eYokogawa ANT401-50 S1\u003c\/strong\u003e (\u003cstrong\u003eANT401\u003c\/strong\u003e Optical ESB Bus Repeater Master Module) provides direct physical\/electrical execution. It converts electrical ESB bus signals into optical signals for long-distance transmission up to 5 km without introducing phase shifts or protocol breakdowns.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe ANT401 series utilizes precise suffix codes to designate safety compliance levels, communication range, and specific hardware revisions within the Yokogawa N-IO and FIO system line:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANT401\u003c\/strong\u003e: Core base model designator for the Optical ESB Bus Repeater Master Module supporting transmission spans up to 5 km.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-5\u003c\/strong\u003e: Standard hardware type configured without explicit explosion protection ratings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0\u003c\/strong\u003e: Basic processing layer variant designated exclusively for legacy hardware maintenance loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eANT401-50 S1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\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\u003eApprox. 0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e1.00 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Centum VP baseplate slot footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C standard industrial operational environment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC system backplane current draw consumption limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eOptical ESB Bus Repeater Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Distance\u003c\/td\u003e\n\u003ctd\u003e5 km total optical loop fiber path length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Interface\u003c\/td\u003e\n\u003ctd\u003eN-IO and FIO baseplate interconnection systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003eElectrical ESB to optical pulse stream transformation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDistributed Process Control \u0026amp; Fieldbus Topologies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol and Fieldbus Routing Layer\u003c\/strong\u003e The module functions as a transparent layer-1 physical data converter. It encapsulates real-time digital sub-system telemetry, including 4-20 mA HART device parameters and fieldbus packets, into a continuous optical bitstream, preventing jitter from degrading downstream process variable values.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation and Optical Safety Controls\u003c\/strong\u003e Internal opto-isolators provide electrical isolation between the inner backplane logic and the external fiber transceiver ports. This prevents high-voltage surges generated in remote field junctions from crossing into the central node backplane, thereby protecting adjacent analog input\/output cards from destructive ground potential differences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the restrictions regarding hot-swapping the ANT401 module within an active node?\u003c\/p\u003e\n\u003cp\u003eA: The module supports live online insertion and removal (hot-swap) when installed in a redundant baseplate configuration. The companion module maintains active fiber links continuously, allowing replacement without interrupting active process control loops or triggering system shutdown commands.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module react if the fiber optic cable experiences physical attenuation beyond the specification limit?\u003c\/p\u003e\n\u003cp\u003eA: When attenuation drops below the receiver optical power threshold, the module trips a hardware diagnostic flag via the backplane. This activates a system alarm in the Yokogawa Centum VP software platform while maintaining the alternative redundant channel to ensure unbroken process control execution.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaseplate Slot Seating and Retaining Screw Torque\u003c\/strong\u003e Align the module straight with the designated slot guides on the node unit baseplate. Press the module firmly inward until the backplane connectors fully lock into place, then tighten the top and bottom retaining screws to 0.48 N-m of torque to ensure mechanical stability under low-frequency industrial vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber Optic Routing and Minimum Bend Radius Constraints\u003c\/strong\u003e Clean all fiber optic connector ferrule faces with standard lint-free solvent before insertion into the transceiver ports. Route the duplex fiber cables through dedicated wireways separate from high-power AC lines, ensuring the cable bend radius never drops below the 30 mm minimum threshold to prevent internal micro-fractures and signal degradation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47624158609598,"sku":"ANT401-50 S1","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-09_17-36-44_ca84cc09-e017-495d-a481-9064eeec5e24.png?v=1781229686","url":"https:\/\/www.autooiltech.com\/ar\/products\/yokogawa-ant401-50-s1-optical-esb-bus-repeater-master-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}