{"product_id":"snb10d-425-cu2t-yokogawa-prosafe-safety-node-unit","title":"SNB10D-425\/CU2T Yokogawa ProSafe Safety Node Unit","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa SNB10D-425\/CU2T\u003c\/strong\u003e is a mission-critical hardware component within the ProSafe-RS Safety Instrumented System (SIS). Engineered for high-availability safety functions, this node unit provides the deterministic processing required for emergency shutdown (ESD) and fire and gas (F\u0026amp;G) applications in hazardous industrial environments.\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\u003eSNB10D-425\/CU2T\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\u003eType\u003c\/td\u003e\n\u003ctd\u003eSafety Node Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e48.2 cm x 22.1 cm x 20.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e220-240 V AC (Dual-Redundant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Safety and Integration\u003c\/h3\u003e\n\u003cp\u003eThe SNB10D-425 supports dual-redundant power supplies, ensuring that power distribution failure does not compromise the safety integrity level (SIL) of the node. The unit is optimized for high-density I\/O handling, utilizing the ESB (Extended Safety Bus) bus architecture—facilitated by the included CU2N connector unit—to communicate with remote safety controllers. Its ruggedized design, compliant with ISA G3 standards, allows for reliable operation in corrosive and thermally challenging atmospheres typical of chemical and oil and gas processing plants.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the -425 suffix provide hazardous location (explosion-proof) protection?\u003c\/p\u003e\n\u003cp\u003eA: No. While this unit is rated for extended temperature ranges (-20 to 70 °C) and G3 corrosive environments, it is not certified for explosion-proof (Ex) zones. It must be installed within a suitable enclosure or a safe zone area.\u003c\/p\u003e\n\u003cp\u003eQ: Can the node expansion license be upgraded after the initial deployment?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The software license managed through the power supply unit can be expanded, provided the node hardware version and firmware support the additional safety loop capacity.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: The unit is designed for 19-inch rack mounting. Ensure that all four rack-mounting points are utilized to secure the 5.9 kg mass against seismic activity or high-vibration industrial conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Grounding\u003c\/strong\u003e: Connect the frame ground to a dedicated safety instrumentation ground bus. Proper grounding is critical for maintaining the common-mode rejection required for the safety loop's integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Connectivity\u003c\/strong\u003e: Use high-quality shielded cabling for the ESB bus connected to the CU2N connector unit (S9342FA). Ensure that cable routes are separated from high-voltage motor or actuator power cables to prevent electromagnetic interference (EMI) on the safety bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management\u003c\/strong\u003e: While rated for -20 to 70 °C, ensure that the cabinet housing the node has sufficient active cooling. Excessive localized heat can cause premature aging of the internal power supply capacitors, potentially impacting the reliability of the dual-redundant power system.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49165295091964,"sku":"SNB10D-445\/CU2T","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/SNB10D-445CU2T1.jpg?v=1780624894","url":"https:\/\/www.electronicplc.com\/ar\/products\/snb10d-425-cu2t-yokogawa-prosafe-safety-node-unit","provider":"Electronic PLC","version":"1.0","type":"link"}