{"product_id":"yokogawa-s2en402-s0001-interface-modules","title":"Yokogawa S2EN402-S0001 Interface Modules","description":"\u003cp\u003eConfigured for high-speed protocol processing and network interface routing between the Safety Control Unit (SCU) and distributed N-IO nodes, the \u003cstrong\u003eYokogawa S2EN402-S0001\u003c\/strong\u003e (\u003cstrong\u003eS2EN402-S0001\u003c\/strong\u003e N-ESB Bus Coupler Module) provides direct physical\/electrical execution. The module serves as a 2-port communication gateway within ProSafe-RS Safety Instrumented Systems (SIS) to transmit safety-critical control signals over the native N-ESB network infrastructure.\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\u003eS2EN402-S0001\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eN-ESB Bus Coupler Module (2-Port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Platform\u003c\/td\u003e\n\u003ctd\u003eProSafe-RS Safety Instrumented System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan (JP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.22 kg (0.49 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e144 mm x 100 mm x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Profile\u003c\/td\u003e\n\u003ctd\u003eDIN rail mountable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e2 x RJ-45 (ISO\/IEC 8802-3 \/ ISO\/IEC 8877 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003e100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Cable\u003c\/td\u003e\n\u003ctd\u003eUnshielded Twisted-Pair (UTP) Enhanced Category 5 or superior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Distance\u003c\/td\u003e\n\u003ctd\u003e100 m (Between SCU and N-IO node, or between sequential N-IO nodes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eSupplied via system backplane distribution lines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eYokogawa Process Control and DCS Optimization\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop and Field Network Interactivity:\u003c\/strong\u003e While the S2EN402-S0001 drives digital serial frames across the N-ESB backbone, it natively bridges control messages bound for analog I\/O structures. The network interface decouples the high-speed Ethernet-based backplane parameters from localized 4-20 mA HART loops, maintaining continuous communication passthrough without distorting analog validation values.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-to-Channel Isolation Control:\u003c\/strong\u003e The two physical RJ-45 port interfaces are fitted with high-frequency galvanic isolation barriers. This layout isolates common-mode voltage spikes, external ground loops, and transient surges from bridging across separate network nodes, preventing localized line faults from degrading main processor bus logic.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the installation slot requirements for configuring dual-redundant operation with this module?\u003c\/p\u003e\n\u003cp\u003eA: To establish an active dual-redundant link, a pair of S2EN402-S0001 modules must be paired together. The base units must be seated into an odd-numbered slot and the adjacent even-numbered slot immediately to its right (spanning slots 1 to 8 on the base plate), routing data independently over N-ESB bus 1 and bus 2.\u003c\/p\u003e\n\u003cp\u003eQ: Can the network cables be safely extracted or inserted while the system backplane power is active?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the RJ-45 physical ports support hot-plugging of the Category 5 UTP lines during runtime. In a dual-redundant setup, the paired backup module absorbs the total transmission load instantaneously, maintaining uninterrupted safety communication to the downstream N-IO blocks.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47894679847102,"sku":"S2EN402-S0001","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-05-14_09-48-24_079f3af4-9814-4117-bc0d-7e894cdb8d0b.png?v=1782727383","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-s2en402-s0001-interface-modules","provider":"AutoOilTech Limited","version":"1.0","type":"link"}