{"product_id":"ssb401-53-yokogawa-centum-vp-esb-bus-interface-slave-module","title":"SSB401-53 Yokogawa CENTUM VP ESB Bus Interface Slave Module","description":"\u003ch2\u003eYokogawa SSB401-53 CENTUM VP ESB Bus Interface Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SSB401-53\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSSB401\u003c\/strong\u003e Optical Bus Interface Module, operates as a dedicated hardware component for deterministic fiber-optic communication within Yokogawa CENTUM VP distributed control system architectures. The unit routes high-speed data between Field Control Units (FCUs) and remote I\/O nodes over an Enhanced System Backbone (ESB) bus.\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\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\u003eSSB401-53\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa Electric Corporation\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\u003e0.40 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e130 x 120 x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 to 95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.0 W (5 VDC at 600 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eESB Bus (Enhanced System Backbone)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Type\u003c\/td\u003e\n\u003ctd\u003eOptical fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e100 Mbps full duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Redundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant bus architecture supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n\u003ctd\u003eOptical isolation between system bus and field equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConformal Coating\u003c\/td\u003e\n\u003ctd\u003eSuffix S1 (ISA Standard G3 corrosive gas resistance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Diagnostics\u003c\/td\u003e\n\u003ctd\u003eSelf-test logic, status error reporting, LED indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards Compliance\u003c\/td\u003e\n\u003ctd\u003eCE, UL, FM certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSystem Integration and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe module provides continuous optical isolation between the core system backplane and field-side fiber trunks, suppressing ground loops and high-voltage electrical surges across extended industrial topologies. In dual-redundant CENTUM VP bus configurations, the unit manages real-time channel switching to maintain full-duplex 100 Mbps data throughput without interrupting control execution. Internal diagnostic circuits evaluate optical signal intensity and frame integrity, driving front-panel status LEDs and passing fault reports directly to the DCS system diagnostic logs.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module handle communication recovery during a primary ESB bus line failure?\u003c\/p\u003e\n\u003cp\u003eA: The module automatically transfers active data traffic to the secondary optical channel within microseconds upon detecting signal degradation or link loss. The system logic records the channel transition in the CENTUM VP diagnostic buffer while maintaining continuous controller execution.\u003c\/p\u003e\n\u003cp\u003eQ: What environmental protection level does the S1 suffix code indicate for this hardware revision?\u003c\/p\u003e\n\u003cp\u003eA: The S1 suffix designates factory-applied conformal coating designed to withstand ISA Standard G3 corrosive atmospheric environments. This protective layer prevents trace oxidation and degradation caused by airborne sulfides, moisture, and chemical vapors in harsh control rooms.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions are necessary when hot-swapping the optical bus module on an active node?\u003c\/p\u003e\n\u003cp\u003eA: Maintenance personnel must verify that the redundant bus module holds active system communication before unseating the target card. Disconnect the optical fiber connectors using protective dust caps to prevent ambient particulate contamination on the optical transceivers during extraction.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the unit directly into the designated slot of the CENTUM VP rack assembly, confirming that the backplane connector seats fully before securing locking screws. Maintain strict minimum bend radius limits on all optical fiber cables to prevent signal attenuation or physical glass fracture within the conduit runs. Ensure cable shields and chassis grounding straps link directly to the main cabinet earth bar using low-impedance copper conductors.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43865964347482,"sku":"SSB401-53 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/840..jpg?v=1787104406","url":"https:\/\/www.spareoil.com\/products\/ssb401-53-yokogawa-centum-vp-esb-bus-interface-slave-module","provider":"SpareOil Automation","version":"1.0","type":"link"}