{"product_id":"yokogawa-scp461-51-s2-safety-control-processor-module","title":"Yokogawa SCP461-51 S2 Safety Control Processor Module","description":"\u003cp\u003eConfigured for safety control program execution in ProSafe-RS safety instrumented systems, the \u003cstrong\u003eYokogawa SCP461-51 S2\u003c\/strong\u003e (\u003cstrong\u003eSCP461\u003c\/strong\u003e Safety Control Processor Module) provides direct physical\/electrical execution. It executes safety control logic stored in onboard flash memory while processing real-time signal data across dual-redundant Vnet\/IP networks.\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\u003eSCP461-51 S2\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\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003eSCP461\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\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 cm x 8 cm x 6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive Backplane Powered (System BUS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS Safety Instrumented System (SIS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgram Storage\u003c\/td\u003e\n\u003ctd\u003eNon-volatile Flash Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Storage\u003c\/td\u003e\n\u003ctd\u003eNon-volatile RAM (NVRAM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Interface\u003c\/td\u003e\n\u003ctd\u003eDual-Redundant Vnet\/IP Control Network\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Support\u003c\/td\u003e\n\u003ctd\u003eUp to 32 N-IO Nodes and 13 Secure Node Units (SNB10D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interconnect\u003c\/td\u003e\n\u003ctd\u003eN-ESB Bus \/ Optical ESB Bus via Couplers (S2EN402, SEC401)\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 SCP461-51-S2 interfaces directly with field I\/O nodes, processing digitized analog signals and HART pass-through data frames transferred over N-ESB and optical ESB buses. System architecture relies on galvanic channel-to-channel isolation across node cards to shield processor logic from high-voltage field spikes and ground loops. Real-time safety calculations execute across dual processor modules running in a synchronized redundancy configuration to preserve control loop timing and field signal pass-through.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the SCP461-51-S2 preserve control state data during an unannounced power outage?\u003c\/p\u003e\n\u003cp\u003eA: Active system operating data is written continuously to onboard NVRAM, which retains system state without battery dependence, while application logic resides in permanent Flash memory.\u003c\/p\u003e\n\u003cp\u003eQ: How is dual redundancy implemented between processor modules in a ProSafe-RS rack?\u003c\/p\u003e\n\u003cp\u003eA: Redundancy requires two identical SCP461 modules running synchronously. A dedicated tracking link synchronizes execution states so the backup module assumes control instantly if the primary unit fails.\u003c\/p\u003e\n\u003cp\u003eQ: What expansion nodes can be linked directly to the SCP461-51-S2 processor?\u003c\/p\u003e\n\u003cp\u003eA: The processor supports connection to up to 32 N-IO nodes and 13 SNB10D Secure Node Units per Safety Control Station (SCS) using N-ESB or optical ESB bus links.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the subnode backplane before inserting or seating the SCP461-51-S2 module into its primary processor slot.\u003c\/li\u003e\n\u003cli\u003eEngage the top and bottom rack retention screws hand-tight, then torque to 0.5 Nm using a flat-head torque screwdriver.\u003c\/li\u003e\n\u003cli\u003eConnect primary and secondary Vnet\/IP network cables to their designated redundant RJ45\/LC ports, ensuring strain relief clips lock firmly into position.\u003c\/li\u003e\n\u003cli\u003eVerify that bus coupler modules (such as S2EN402 or SEC401) are correctly seated and terminated with 110-ohm bus terminators where applicable.\u003c\/li\u003e\n\u003cli\u003eGround the system chassis rack to a functional earth ground point with a dedicated conductor resistant to less than 1 ohm.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53327424880949,"sku":"SCP461-51 S2","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/SCP461-51S2.png?v=1787103930","url":"https:\/\/www.5gplc.com\/products\/yokogawa-scp461-51-s2-safety-control-processor-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}