{"product_id":"yokogawa-anb11d-b25-bu2a-communication-modules","title":"Yokogawa ANB11D-B25\/BU2A Communication Modules","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa ANB11D-B25\/BU2A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eANB11D-B25\/BU2A\u003c\/strong\u003e Node Unit for dual-redundant ESB Bus with Optical Repeater, operates as a dedicated hardware component for high-speed data acquisition and remote communication extension within Yokogawa industrial automation platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix Segment\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eParameter Designation\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription \u0026amp; Configuration\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eANB11D\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eNode Unit for dual-redundant ESB Bus with optical repeater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB\u003c\/td\u003e\n\u003ctd\u003ePower Supply \/ Distance\u003c\/td\u003e\n\u003ctd\u003eDual-redundant AC power configuration supporting optical repeater link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003ePower Input Rating\u003c\/td\u003e\n\u003ctd\u003e220-240 V AC power supply input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eEnvironmental Rating\u003c\/td\u003e\n\u003ctd\u003eBasic type with no explosion protection classification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\/BU2A\u003c\/td\u003e\n\u003ctd\u003eConnector Suffix\u003c\/td\u003e\n\u003ctd\u003eConnector unit for ESB Bus with built-in terminator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eANB11D-B25\/BU2A\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\u003eGlobal Manufacturing Facility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eSystem-dependent rack enclosure format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e19-inch rack mount form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eDual-redundant AC (220-240 V AC at 50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eESB Bus (Synchronous) with integrated optical repeater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Elements\u003c\/td\u003e\n\u003ctd\u003eBU2A connector unit with built-in bus terminator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe node unit manages process signal routing through robust internal isolation architecture, protecting sensitive backplane communications from ground loops and electrical transients. FOUNDATION Fieldbus and Profibus PA connectivity frameworks operate seamlessly across the overarching DCS infrastructure, while cold junction compensation (CJC) maintains thermal equilibrium for analog termination blocks. 4-20 mA HART loop protocol compatibility ensures reliable transmission of multi-variable field instrument data without signal attenuation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the specific function of the BU2A connector unit on this node?\u003c\/p\u003e\n\u003cp\u003eA: The BU2A suffix indicates an ESB bus connector unit equipped with a built-in terminator to maintain proper line impedance and signal integrity.\u003c\/p\u003e\n\u003cp\u003eQ: Does the ANB11D-B25\/BU2A support redundant power inputs?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The hardware architecture features a dual-redundant AC power supply configuration operating at 220-240 V AC to prevent downtime during power faults.\u003c\/p\u003e\n\u003cp\u003eQ: Can this node unit be replaced while the control network is energized?\u003c\/p\u003e\n\u003cp\u003eA: Replacement procedures must comply with Yokogawa system safety guidelines, ensuring proper power isolation and bus redundancy protocols are maintained.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the 19-inch rack unit securely into the industrial cabinet using appropriate M5 mechanical fasteners and clearance spacing.\u003c\/li\u003e\n\u003cli\u003eVerify that all 220-240 V AC power feeds are locked out and tested for zero energy state prior to wiring connections.\u003c\/li\u003e\n\u003cli\u003eConnect the dual-redundant optical repeater lines and ESB bus communication cables carefully, ensuring the BU2A terminator is correctly positioned at the bus termination point.\u003c\/li\u003e\n\u003cli\u003eCheck power status indicators and verify optical link communication quality using engineering software prior to system re-energization.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":48182030368958,"sku":"ANB11D-B25\/BU2A","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-10_10-11-23_f9816b85-af6f-4b37-9203-8425622d6381.png?v=1784692748","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-anb11d-b25-bu2a-communication-modules","provider":"AutoOilTech Limited","version":"1.0","type":"link"}