{"product_id":"snb10d-223-cu2n-yokogawa-prosafe-rs-safety-node-unit","title":"SNB10D-223\/CU2N Yokogawa ProSafe-RS Safety Node Unit","description":"\u003ch2\u003eYokogawa SNB10D-223\/CU2N ProSafe-RS Safety Node Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SNB10D-223\/CU2N\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSNB10D\u003c\/strong\u003e Safety Node Unit, operates as a dedicated hardware component for safety I\/O expansion signal distribution and power delivery within Yokogawa ProSafe-RS 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 \/ Option Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eOption\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSNB10D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eSafety Node Unit chassis for ProSafe-RS SIS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e100 V AC to 120 V AC line voltage rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Redundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant power supply configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHardware Setup\u003c\/td\u003e\n\u003ctd\u003eMounting and internal bus compliance specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e** \/CU2N**\u003c\/td\u003e\n\u003ctd\u003eOption Code\u003c\/td\u003e\n\u003ctd\u003eSpecialized connector \/ interface option variant\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\u003eSNB10D-223\/CU2N\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\u003e0.52 kg to 8.0 kg (chassis base to fully populated rack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e18.4 cm x 15.0 cm x 3.0 cm (base unit footprint)\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 (ISA G3 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e200 VA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Line Voltage\u003c\/td\u003e\n\u003ctd\u003e100 V AC to 120 V AC (50\/60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eYokogawa ProSafe-RS Safety Instrumented System (SIS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 8 safety I\/O module slots plus dedicated power\/bus slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Architecture\u003c\/td\u003e\n\u003ctd\u003eDual-redundant ESB Bus \/ ER Bus communication interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Compliance\u003c\/td\u003e\n\u003ctd\u003eSIL3 capable in ProSafe-RS Safety Control Station configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Format\u003c\/td\u003e\n\u003ctd\u003eStandard 19-inch panel rack mounting\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 SNB10D-223\/CU2N safety node unit routes analog inputs, 4-20 mA HART loop protocol parameters, and discrete field signals across backplane isolation barriers to the central Safety Control Station (SCS). High-integrity photocoupler circuits enforce channel-to-channel isolation and field-to-system galvanic separation, preventing electrical transients from propagating across safety logic loops. Continuous diagnostic loops monitor backplane power levels, transceiver state integrity, and I\/O module health to ensure deterministic safety execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the dual-redundant power module design maintain safety execution during a single AC line drop?\u003c\/p\u003e\n\u003cp\u003eA: The chassis houses two isolated power supply units fed by independent 100-120 V AC sources. If one line or power module fails, the redundant module instantly handles the total internal backplane load without triggering false trips or dropping communication with the SCS.\u003c\/p\u003e\n\u003cp\u003eQ: Can safety I\/O modules installed within the SNB10D-223\/CU2N rack be replaced without de-energizing the safety system?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swapping supported I\/O modules within an active SNB10D chassis is permitted, provided field technicians follow proper ESD grounding protocols and verify that the SCS recognizes the module removal state beforehand.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003ePosition the SNB10D-223\/CU2N unit inside a 19-inch instrument cabinet frame. Secure the chassis using all four rack-mounting screws to resist cabinet vibration and maintain ground continuity.\u003c\/p\u003e\n\u003cp\u003eConnect both 100-120 V AC feed lines to their respective power terminal connections. Route dual ESB Bus cables in separate wiring conduits to protect redundant signal pathways from simultaneous mechanical damage, and ground all cable shield drain wires at the main cabinet earth bar.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43823063007322,"sku":"SNB10D-223\/CU2N","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/654._58a56d94-1f88-4d6c-9b88-56a524c7f3d9.jpg?v=1786414736","url":"https:\/\/www.spareoil.com\/products\/snb10d-223-cu2n-yokogawa-prosafe-rs-safety-node-unit","provider":"SpareOil Automation","version":"1.0","type":"link"}