{"product_id":"yokogawa-sec401-11-esb-bus-coupler-module-master-interface","title":"Yokogawa SEC401-11 ESB Bus Coupler Module Master Interface","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Yokogawa SEC401-11 functions as the high-speed backbone for the CENTUM VP and CS 3000 Distributed Control Systems (DCS). Operating as an ESB bus master interface, this module establishes a high-performance communication link between the Field Control Station (FCS) and various I\/O node units. In large-scale industrial plants—such as oil refineries and power generation facilities—the SEC401-11 ensures that critical process data flows with absolute precision and minimal latency.\u003c\/p\u003e\n\u003cp\u003eThis module provides the necessary bandwidth to handle dense I\/O configurations, managing data from hundreds of field instruments simultaneously. By utilizing a 128 Mbps proprietary transmission protocol, the SEC401-11 eliminates network bottlenecks, allowing for real-time monitoring and control of complex machinery. Its robust architecture guarantees that even in the event of high system load, the link between the controller and the process remains stable and deterministic.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cp\u003eThe SEC401-11 follows a specific hardware revision logic that determines its compatibility with the system's ESB bus topology.\u003c\/p\u003e\n\u003ch3\u003eSuffix Code Breakdown\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e-1: Standard Transmission Logic\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe first digit indicates that the module is optimized for the standard ESB bus transmission protocol. This confirms that the unit supports the maximum 128 Mbps throughput required for high-density I\/O module data exchange across the rack backplane and inter-unit cabling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1: Hardware Revision and Style\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe second digit signifies the hardware revision, identifying the specific internal component layout and connector type. Version \"1\" ensures compatibility with standard ESB bus cables (such as the YCB301) and is designed for seamless integration into the FCS's processor or interface slots.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eESB Bus Master Interface\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTransmission Speed\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e128 Mbps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConnectable Units\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMax 9 units (per bus segment)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTransmission Distance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMax 10 meters\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 A (at 5 V DC)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 55 °C (32 to 131 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10% to 90% RH (Non-condensing)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e130 x 45 x 130 mm (Standard Module Size)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.24 kg (Approx. 240g)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturing Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eJapan\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003cp\u003eCorrect engineering of the ESB bus network is vital to prevent signal degradation and system timeouts.\u003c\/p\u003e\n\u003ch3\u003eCabling and Termination\u003c\/h3\u003e\n\u003cp\u003eUse only Yokogawa-certified ESB bus cables to connect the SEC401-11 to local node units. Do not exceed the 10-meter total distance limit, as this causes signal timing issues. Ensure the bus connectors are firmly seated; loose connections are the primary cause of intermittent \"Node Communication Failure\" alarms.\u003c\/p\u003e\n\u003ch3\u003eHeat Dissipation\u003c\/h3\u003e\n\u003cp\u003eMaintain vertical airflow within the cabinet. While the module consumes only 0.5 A, high-density I\/O racks generate significant heat. Ensure that cooling fans are functional and that filters remain clean to keep the operating temperature within the rated 0 to 55 °C range.\u003c\/p\u003e\n\u003ch3\u003eRedundancy Setup\u003c\/h3\u003e\n\u003cp\u003eWhen configuring for high availability, install the SEC401-11 in pairs. Verify that the redundancy cable between the processor modules is active to allow for automatic bumpless failover should one bus interface fail.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eUltra-High-Speed Throughput\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 128 Mbps data rate provides the responsiveness required for high-speed safety loops and turbine control. This high bandwidth allows the DCS to process thousands of I\/O points without increasing the system scan time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eScalable Architecture\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA single SEC401-11 module supports the connection of up to 9 node units. This scalability enables engineers to expand the I\/O capacity of a control station easily as plant requirements grow, without needing to replace the central processor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRugged Industrial Reliability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in Japan, the SEC401-11 withstands the electromagnetic interference (EMI) common in industrial substations. Its high insulation resistance and robust error-checking protocols ensure that process data remains uncorrupted even in electrically noisy environments.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDelivery and Logistics\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDelivery Time:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3-5 days after payment is finalized.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping Methods:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReliable global delivery via\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDHL, FEDEX, or UPS\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAll units are shipped in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBrand New, Factory Sealed\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition from our current stock.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the maximum number of I\/O points one SEC401-11 can manage?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: The module itself supports up to 9 node units. The actual I\/O point limit depends on the types of I\/O modules installed in those nodes and the capacity of the FCS processor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can I extend the 10-meter distance limit using a standard signal booster?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: No. The ESB bus is time-sensitive. To extend the distance beyond 10 meters, you must use an Optical ESB Bus Repeater Module (such as the SNT401\/SNT501) and fiber optic cabling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Is the SEC401-11 compatible with both CENTUM VP and CS 3000?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: Yes, this module is a standard component for both systems, provided the rack backplane and processor support the ESB bus interface protocol.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How do I troubleshoot a \"Communication Error\" on this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: First, check the status LEDs on the module faceplate. If the \"FAIL\" LED is lit, the module likely has an internal hardware fault. If \"RCV\" is not blinking, check the ESB bus cables and the terminators on the last node unit.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":45910363635885,"sku":"SEC401-11","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/SEC401-113.jpg?v=1776222183","url":"https:\/\/www.maxwellplc.com\/products\/yokogawa-sec401-11-esb-bus-coupler-module-master-interface","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}