{"product_id":"yokogawa-ec401-50-prosafe-rs-sil3-esb-bus-coupler-module","title":"Yokogawa EC401-50 ProSafe-RS SIL3 ESB Bus Coupler Module","description":"\u003ch2\u003eYokogawa EC401-50 ESB Bus Coupler Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for high-speed deterministic bus extension in ProSafe-RS safety instrumentation platforms, the \u003cstrong\u003eYokogawa EC401-50\u003c\/strong\u003e (\u003cstrong\u003eEC401\u003c\/strong\u003e ESB Bus Coupler Module) provides direct physical\/electrical execution. The module interfaces safety node units across redundant ESB bus lines to execute real-time inter-module communications and safety logic execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC401\u003c\/strong\u003e: Base model ESB bus coupler module designed for safety control station node units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-5\u003c\/strong\u003e: Standard module type configured without explosion protection requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0\u003c\/strong\u003e: Basic functionality configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS3\u003c\/strong\u003e: Hardware revision code indicating functional compliance with SIL3 architecture standards.\u003c\/li\u003e\n\u003c\/ul\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\u003eEC401-50 S3\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\u003e3.0 kg (Shipping Weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard FIO \/ Safety Node module size (19-inch rack node compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e10 to 90% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal (internal node bus powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNode bus allocation limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eESB Bus (Safety Bus interface)\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\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eSIL3 (IEC 61508 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Support\u003c\/td\u003e\n\u003ctd\u003eDual ESB Bus line redundancy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eSafety Control Station Node rack slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, IECEx, ATEX, SIL3 safety compliance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSIL3 Certification \u0026amp; Fail-Safe State Execution\u003c\/h3\u003e\n\u003cp\u003eThe EC401-50 S3 complies with IEC 61508 SIL3 safety integrity requirements to maintain deterministic communication across the ESB bus architecture. Internal hardware circuits incorporate continuous self-diagnostics and cyclic redundancy checks (CRC) to monitor data packet transmission between the safety CPU and remote I\/O modules. Upon detecting parity errors, hardware cable disconnects, or communication timeouts, the bus coupler forces the affected safety channels into a predefined fail-safe state execution without interrupting non-faulted parallel safety loops. Dual ESB bus line switching operates seamlessly to prevent false trips during single-path transmission faults.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the EC401-50 module support dual-redundant ESB bus line configurations?\u003c\/p\u003e\n\u003cp\u003eA: Yes, two EC401-50 modules installed in dedicated bus coupler slots of a safety control station node provide fully redundant ESB bus communication channels, ensuring continuous SIL3 execution even if one bus cable suffers a physical rupture or signal degradation.\u003c\/p\u003e\n\u003cp\u003eQ: Can an EC401-50 bus coupler module be hot-swapped during active ProSafe-RS control operations?\u003c\/p\u003e\n\u003cp\u003eA: Technicians can hot-swap a faulted EC401-50 module in a redundant ESB bus configuration while the safety node remains powered and online. The parallel redundant bus module maintains active data execution. Replacing a module in a non-redundant single-bus system will break communication to downstream I\/O units, triggering fail-safe shutdown states on those channels.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the EC401-50 S3 firmly into its designated node rack slot, tightening the top and bottom securing screws to establish a solid ground bond with the chassis frame. Route ESB bus interface cables through dedicated cable trays, maintaining strict separation from high-voltage AC lines and variable frequency drive wiring to eliminate electromagnetic noise coupling. Ensure the maximum permitted ESB bus cable lengths are not exceeded and that standard bus termination resistors are properly seated at both physical ends of the bus topology. Always verify cabinet convection airflow to ensure operating temperatures remain between 0 and 55 deg C.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43832082825306,"sku":"EC401-50 S3","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/484.1_35ee11cf-0f4a-451b-bd08-a3b01aa7435f.jpg?v=1786505613","url":"https:\/\/www.spareoil.com\/products\/yokogawa-ec401-50-prosafe-rs-sil3-esb-bus-coupler-module","provider":"SpareOil Automation","version":"1.0","type":"link"}