{"product_id":"yokogawa-sec402-51-s1-centum-vp-esb-bus-coupler-module","title":"Yokogawa SEC402-51 S1 CENTUM VP ESB Bus Coupler Module","description":"\u003ch2\u003eYokogawa SEC402-51 S1 ESB Bus Coupler Modules\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-speed network communication in CENTUM VP and ProSafe-RS control platforms, the \u003cstrong\u003eYokogawa SEC402-51 S1\u003c\/strong\u003e (\u003cstrong\u003eSEC402\u003c\/strong\u003e ESB Bus Coupler Module) provides direct physical\/electrical execution. The unit links safety and process node racks over dual redundant Ethernet communication channels, executing real-time data transfers across backplane architectures. Featuring integrated hardware diagnostic indicators and 1500 VAC dielectric isolation, the module maintains continuous inter-rack communication across distributed control loops.\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\u003eSEC402-51 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\u003eUSA \/ Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.34 - 0.40 kg (2.0 kg shipping weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e32 mm x 106 mm x 130 mm\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\u003e~400 mA at 5 VDC (backplane supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP, Ethernet TCP\/IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eDual redundant Ethernet ports (RJ-45)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e100 Mbps full duplex\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\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1500 VAC between communication paths and logic for 1 minute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and DCS Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eYokogawa process control platforms depend on isolation barriers to prevent field-side voltage transients and loop interference from reaching central system processors. The SEC402-51 S1 incorporates 1500 VAC galvanic isolation between communication bus lines and internal backplane logic. Operating alongside 4-20 mA HART analog loops and digital I\/O networks, this isolation prevents ground loop current propagation and maintains signal integrity across redundant system nodes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the SEC402-51 S1 maintain bus communication if one network cable fails? A: The module incorporates dual redundant RJ-45 Ethernet ports to instantly reroute data traffic across the secondary path without interrupting control execution.\u003c\/p\u003e\n\u003cp\u003eQ: What power rail supplies operating current to the SEC402-51 S1 module? A: The module draws operating power directly from the system backplane 5 VDC rail, consuming approximately 400 mA under full load.\u003c\/p\u003e\n\u003cp\u003eQ: What diagnostic capabilities indicate active hardware communication errors? A: Integrated front-panel LED indicators and internal firmware error detection circuits continuously monitor bus traffic to report port status and link faults.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eShut down backplane rack power or verify dual-redundant partner availability prior to installing or removing the module.\u003c\/li\u003e\n\u003cli\u003eAlign the module edge connector precisely with the rack slot guides to prevent bent backplane pins during physical insertion.\u003c\/li\u003e\n\u003cli\u003eInsert CAT5e or CAT6 network cables into both RJ-45 redundant ports until locking tabs snap securely into place.\u003c\/li\u003e\n\u003cli\u003eRoute network communication cables in separate raceways away from high-voltage AC lines to prevent inductive noise interference.\u003c\/li\u003e\n\u003cli\u003eConnect cabinet protective grounding conductors directly to the main station earthing bar using short, low-impedance copper drain cables.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43787403624538,"sku":"SEC402-51 S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/723.jpg?v=1785898587","url":"https:\/\/www.spareoil.com\/es\/products\/yokogawa-sec402-51-s1-centum-vp-esb-bus-coupler-module","provider":"SpareOil Automation","version":"1.0","type":"link"}