{"product_id":"yokogawa-snb10d-243-cu2n-prosafe-rs-safety-node-unit","title":"Yokogawa SNB10D-243\/CU2N ProSafe-RS Safety Node Unit","description":"\u003ch2\u003eYokogawa SNB10D-243\/CU2N Safety Node Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SNB10D-243\/CU2N\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSNB10D\u003c\/strong\u003e Safety Node Unit, operates as a dedicated hardware component for safety node backplane extension and I\/O module housing within ProSafe-RS Safety Instrumented System networks.\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\u003eModel \/ Suffix Code\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\u003e\u003cstrong\u003eSNB10D\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSafety Node Unit (Rack Mountable Type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual-redundant power supply with software license for node expansion (R3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-4\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 VDC power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-3\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating, temperature range -20 to 70 deg C, no explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\/CU2N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConnector Unit for ESB Bus (Part number S9342FA)\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-243\/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\u003e5.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e19-inch rack-mount standard\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 Consumption\u003c\/td\u003e\n\u003ctd\u003eDual 24 VDC bus feeds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eISA Standard G3 conformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS Safety Instrumented System (SIS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eExtended Serial Backplane (ESB) Bus via CU2N (S9342FA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003e19-inch rack mount with four M5 screws\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 \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe Yokogawa SNB10D-243\/CU2N provides the power distribution backplane and high-speed ESB bus interconnection for safety I\/O modules processing 4-20 mA HART analog signals. Integrated channel-to-channel isolation networks prevent field ground loops and voltage surges from compromising node logic processor functions. The dual-redundant 24 VDC power bus interface ensures continuous power feed delivery to loop-powered transmitters, maintaining safety loop integrity during single power rail outages across downstream instrument channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is chassis grounding isolation maintained during 19-inch rack installation?\u003c\/p\u003e\n\u003cp\u003eA: Installation requires the inclusion of the factory-supplied insulation bushes placed under the four M5 mounting screws to isolate the unit chassis from cabinet frame ground loops.\u003c\/p\u003e\n\u003cp\u003eQ: Can an individual 24 VDC power module feed be hot-swapped during live process operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the dual-redundant power supply architecture permits live removal and replacement of a failed power module without dropping backplane power to operational I\/O cards.\u003c\/p\u003e\n\u003cp\u003eQ: What interface hardware establishes connection between this node unit and the main Safety Control Station?\u003c\/p\u003e\n\u003cp\u003eA: The option code \/CU2N installs an S9342FA ESB Bus Connector Unit onto the node frame to interface with the primary safety control network cabling.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eField technicians must follow standard rack-mounting and electrical grounding isolation procedures:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eInsert the four included insulation bushes into the mounting holes on the front panel of the 19-inch rack chassis frame.\u003c\/li\u003e\n\u003cli\u003ePosition the SNB10D-243\/CU2N inside the cabinet rail and secure it using four M5 screws inserted directly through the insulation bushes.\u003c\/li\u003e\n\u003cli\u003eWire the dual 24 VDC supply lines to their designated power terminal blocks using properly crimped ring terminals.\u003c\/li\u003e\n\u003cli\u003eConnect the ESB bus interface cables securely to the CU2N connector unit and engage the mechanical locking screws.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43901468541018,"sku":"SNB10D-243\/C2UN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/410._fed679d6-2a71-4d0a-80a0-bc11a70dfcfe.jpg?v=1787623417","url":"https:\/\/www.spareoil.com\/products\/yokogawa-snb10d-243-cu2n-prosafe-rs-safety-node-unit","provider":"SpareOil Automation","version":"1.0","type":"link"}