{"product_id":"ant401-50-cu1t-yokogawa-optical-esb-bus-repeater-master-module","title":"ANT401-50\/CU1T | Yokogawa | Optical ESB Bus Repeater Master Module","description":"\u003ch2\u003eYokogawa ANT401-50\/CU1T Optical ESB Bus Repeater Master Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for electrical-to-optical ESB bus signal conversion within CENTUM VP control architectures, the \u003cstrong\u003eYokogawa ANT401-50\/CU1T\u003c\/strong\u003e (\u003cstrong\u003eANT401-50\u003c\/strong\u003e) Optical ESB Bus Repeater Master Module provides direct physical layer transport for Extended Serial Bus communication over fiber optic media up to 5 km when paired with compatible slave repeater units such as ANT502.\u003c\/p\u003e\n\u003cp\u003eThe module performs ESB bus signal regeneration, electrical isolation, and optical transmission using dual-core fiber links. It is designed for FCU and FIO Node Unit backplane integration with fixed-slot installation architecture and supports redundant configuration for dual-path ESB communication continuity.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eANT401: Optical ESB Bus Repeater Master Module series designation\u003c\/li\u003e\n\u003cli\u003e50: 5 km transmission class configuration\u003c\/li\u003e\n\u003cli\u003eCU1T: Connector unit with built-in ESB bus termination function\u003c\/li\u003e\n\u003cli\u003e-5: Standard variant without explosion protection\u003c\/li\u003e\n\u003cli\u003e0: Basic configuration type\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\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\u003eModel \/ Brand\u003c\/td\u003e\n\u003ctd\u003eANT401-50\/CU1T \/ Yokogawa\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 (main unit), ~2.0 kg shipping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 degC to +60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC, approx. 0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eESB bus electrical-to-optical conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Transmission Distance\u003c\/td\u003e\n\u003ctd\u003eUp to 5 km (fiber optic link, paired system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Interface\u003c\/td\u003e\n\u003ctd\u003eLC connector, 2-core Tx\/Rx\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Base\u003c\/td\u003e\n\u003ctd\u003eFCU \/ FIO Node Unit slots (IO1-8 architecture)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Bus Signal Isolation and DCS Network Transport\u003c\/h3\u003e\n\u003cp\u003eThe ANT401-50\/CU1T implements ESB bus physical layer decoupling through optical conversion with inherent galvanic isolation between FCU backplane electrical domains and remote FIO node segments. In Yokogawa CENTUM VP architectures, ESB communication frames are regenerated at the master repeater stage, eliminating ground potential coupling across distributed node cabinets.\u003c\/p\u003e\n\u003cp\u003eThe optical transport path uses dual-channel fiber signaling with separate transmit and receive cores. Signal integrity is maintained through deterministic frame reconstruction at each repeater stage, ensuring stable backplane synchronization under multi-node expansion topologies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the ANT401-50\/CU1T operate in a hot-swap configuration?\u003c\/strong\u003e\u003cbr\u003eA: Hot-swap capability depends on FCU baseplate implementation. The module itself interfaces via fixed backplane slots; removal typically requires ESB bus communication isolation at system level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the electrical load on the 24 VDC supply line?\u003c\/strong\u003e\u003cbr\u003eA: The module draws approximately 0.5 A at 24 VDC under nominal operation, excluding inrush conditions during initialization.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is redundant fiber routing supported?\u003c\/strong\u003e\u003cbr\u003eA: Redundancy is supported through paired master-slave repeater configuration and dual-path ESB topology; physical fiber redundancy depends on system design.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall only in designated FCU or FIO Node Unit slots (IO1, 3, 5, 7 or paired redundant slots IO1-2, IO3-4, etc.)\u003c\/li\u003e\n\u003cli\u003eMaintain LC fiber connector cleanliness; avoid dust contamination during coupling cycles\u003c\/li\u003e\n\u003cli\u003eEnsure ESB bus termination is correctly configured using CU1T connector unit where required\u003c\/li\u003e\n\u003cli\u003eRoute fiber optic cables with minimum bend radius compliant with industrial multimode fiber standards\u003c\/li\u003e\n\u003cli\u003eMaintain separation between optical fiber routing and high-noise power cabling to avoid EMI coupling at termination points\u003c\/li\u003e\n\u003cli\u003eVerify backplane slot alignment before insertion to prevent connector pin stress\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44175747678296,"sku":"ANT401-50\/CU1T","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/ANT401-50CU1T-2.jpg?v=1780454851","url":"https:\/\/www.industriaxplc.com\/products\/ant401-50-cu1t-yokogawa-optical-esb-bus-repeater-master-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}