{"product_id":"yokogawa-scp451-51-s1-prosafe-rs-processor-module","title":"Yokogawa SCP451-51 S1 ProSafe-RS Processor Module","description":"\u003ch2\u003eYokogawa SCP451-51 S1 ProSafe-RS Processor Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SCP451-51 S1\u003c\/strong\u003e serves as the primary \u003cstrong\u003eSCP451-51\u003c\/strong\u003e Processor Module utilized to execute deterministic safety control cycles and real-time logic execution across ProSafe-RS Safety Instrumented Systems and CENTUM VP DCS 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 Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eOption Code\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription \/ Specification Detail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-51\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e--\u003c\/td\u003e\n\u003ctd\u003eStandard type processor module without explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eS1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e--\u003c\/td\u003e\n\u003ctd\u003eRevision variant with ISA Standard G3 harsh environment compliance\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\u003eSCP451-51 S1\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\u003e0.3 kg (net module), 0.7 kg (gross packaged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e120 mm x 25 mm x 130 mm (module base), 160 mm x 60 mm x 210 mm (shipping container)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e6.0 W (5 VDC at 1.2 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Architecture\u003c\/td\u003e\n\u003ctd\u003e32-bit RISC Processor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle Execution Time\u003c\/td\u003e\n\u003ctd\u003eDeterministic cycle time \u0026lt;= 100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Board Memory\u003c\/td\u003e\n\u003ctd\u003e32 MB Program Memory, 64 MB Data Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interfaces\u003c\/td\u003e\n\u003ctd\u003eESB\/ER Bus for I\/O modules, Vnet\/IP for network system integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy\u003c\/td\u003e\n\u003ctd\u003eDual-redundant CPU operation supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e10 to 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Compliance\u003c\/td\u003e\n\u003ctd\u003eISA-71.04 Class G3 Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation \u0026amp; 4-20 mA HART Protocol Integration\u003c\/h3\u003e\n\u003cp\u003eThe hardware architecture provides robust channel-to-channel isolation rated at 1500 VAC for 1 minute across the backplane bus, isolating internal processing logic from field signal transients. Designed to operate within process automation topologies, the module manages real-time synchronization between 4-20 mA HART loop protocol communications and high-speed Vnet\/IP control buses. Integrated cold junction compensation algorithms process field instrumentation inputs without adding latency to the internal watchdog timer or cycle execution engine.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the SCP451-51 S1 execute dual-redundant processing without interrupting control loop cycles?\u003c\/p\u003e\n\u003cp\u003eA: Dual SCP451-51 S1 modules operate in a primary and secondary redundant pair over a shared backplane. Memory register states synchronize continuously across an equalization bus. If a self-diagnostic routine or watchdog timer detects a failure on the primary unit, control passes to the secondary unit within a single scan cycle without process disturbance.\u003c\/p\u003e\n\u003cp\u003eQ: Can the SCP451-51 S1 module be installed or replaced while the backplane is energized?\u003c\/p\u003e\n\u003cp\u003eA: Hot-swap replacement is supported provided the node contains a redundant processor active in the field control unit rack. Standard electrostatic discharge protection and mechanical insertion alignment protocols must be followed to avoid transient voltage surges on the 5 VDC supply rail.\u003c\/p\u003e\n\u003cp\u003eQ: What environmental conditions does the S1 suffix variant accommodate?\u003c\/p\u003e\n\u003cp\u003eA: The S1 variant conforms to ISA Standard G3, providing conformal coating layer protection against atmospheric corrosive gases (such as hydrogen sulfide and sulfur dioxide) in harsh chemical process environments.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Connector Inspection\u003c\/strong\u003e: Before inserting the module into the Field Control Unit rack, verify that backplane pin headers and guide rails are free from debris and physical deformation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipotential Grounding\u003c\/strong\u003e: Connect the mounting rack to functional earth (FE) using copper wire with a minimum cross-sectional area of 5.5 mm2. Shielded field cables must terminate at a single point ground bar with impedance under 1 ohm to mitigate common-mode noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Line Isolation\u003c\/strong\u003e: Maintain physical separation between Vnet\/IP network communications cables, ESB\/ER bus lines, and AC power cabling. Use dedicated cable trays or conduits with a minimum spacing of 200 mm to suppress electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnused Slot Seals\u003c\/strong\u003e: Maintain protective blank covers over all empty rack slots to preserve proper cooling airflow profiles and enforce ISA G3 environmental protection standards.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43855930720346,"sku":"SCP451-51 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/40_f0ef1f6c-1d73-4e1a-a087-9c5f8b6de36c.jpg?v=1786946548","url":"https:\/\/www.spareoil.com\/products\/yokogawa-scp451-51-s1-prosafe-rs-processor-module","provider":"SpareOil Automation","version":"1.0","type":"link"}