{"product_id":"yokogawa-snb10d-225-safety-node-unit","title":"Yokogawa SNB10D-225 Safety Node Unit","description":"\u003cp\u003eConfigured for high-integrity safety instrumented systems (SIS), the \u003cstrong\u003eYokogawa SNB10D-225\u003c\/strong\u003e (\u003cstrong\u003eSNB10D-225\u003c\/strong\u003e Safety Node Unit) provides direct physical and electrical execution for critical process safety monitoring and emergency shutdown sequences.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe SNB10D-225 employs a modular coding architecture to define power redundancy, supply input, and bus connectivity:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e-2\u003c\/strong\u003e: Indicates a dual-redundant power supply configuration, integrated with a software license for node expansion (R3) to support larger safety loop architectures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-225\u003c\/strong\u003e: Specifies the primary operating input voltage range of 220 to 240 V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\/CU2T\u003c\/strong\u003e: Denotes the inclusion of a dedicated connector unit paired with a terminator for the ESB (Extended Safety Bus) communication architecture.\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\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-225\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\u003e5.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard rack-mount chassis\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 to 240 V AC (Dual-redundant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3, ATEX (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSIS High-Reliability Architecture\u003c\/h3\u003e\n\u003cp\u003eThe SNB10D-225 is engineered to facilitate triple modular redundancy (TMR) 2oo3 architecture when integrated into safety-critical loops, ensuring the system maintains a fail-safe state execution in the event of hardware degradation. The unit's internal circuitry provides galvanic isolation between the safety bus and field-side signals, protecting the logic processor from high-energy field faults. This design ensures that the safety node maintains operational continuity even during severe electromagnetic or thermal disturbances, adhering to strict SIS availability requirements.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the -2 suffix include the license for node expansion?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The -2 configuration integrates the software license necessary for R3 node expansion, allowing for the scaling of safety nodes within the SIS network without additional hardware modification.\u003c\/p\u003e\n\u003cp\u003eQ: Is the unit rated for use in hazardous areas?\u003c\/p\u003e\n\u003cp\u003eA: The SNB10D supports optional ATEX certification. Ensure that the specific serial unit in use has the ATEX markings before installation in a designated hazardous zone.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the rack-mount enclosure is securely fastened and bonded to a high-integrity safety ground to mitigate common-mode noise.\u003c\/li\u003e\n\u003cli\u003eConnect both power supply inputs to independent AC sources to leverage the dual-redundant power design, ensuring uninterrupted safety logic execution.\u003c\/li\u003e\n\u003cli\u003eInstall the provided \/CU2T terminator on the last node of the ESB bus segment to prevent signal reflections and bus communication errors.\u003c\/li\u003e\n\u003cli\u003eWhen performing wiring, utilize dedicated safety-rated conduits; maintain strict separation between safety signals and standard control cabling.\u003c\/li\u003e\n\u003cli\u003eVerify the operational state of the dual-redundant power supplies using the onboard diagnostic LEDs before placing the node into active service.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49243316650236,"sku":"SNB10D-225","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/SNB10D-2251.jpg?v=1782956037","url":"https:\/\/www.electronicplc.com\/products\/yokogawa-snb10d-225-safety-node-unit","provider":"Electronic PLC","version":"1.0","type":"link"}