{"product_id":"ec402-51-s1-yokogawa-esb-bus-coupler-module-new-original-stock","title":"EC402-51-S1 Yokogawa ESB Bus Coupler Module | New \u0026 Original Stock","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa EC402-51-S1\u003c\/strong\u003e (\u003cstrong\u003eEC402\u003c\/strong\u003e) is a critical ESB (Extended Serial Bus) Bus Coupler Module designed to facilitate high-speed, reliable data communication between the Field Control Station (FCS) and remote I\/O nodes in Yokogawa distributed control architectures.\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\u003eEC402-51-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\u003e0.24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e3.2 cm x 12.8 cm x 13 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eESB Bus (Extended Serial Bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eI\/O Module Rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eIndustrial grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBus Communication and Topology\u003c\/h3\u003e\n\u003cp\u003eThe EC402-51-S1 acts as the communication bridge, ensuring that the control bus maintains synchronization and signal integrity across geographically distributed I\/O nodes. It manages the packet-based communication protocols between the controller and the remote I\/O interface, providing essential buffering and error-detection capabilities. This module is vital for maintaining deterministic control loop performance, even when the I\/O rack is located at a distance from the main controller.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the significance of the \"ESB\" designation in this module?\u003c\/p\u003e\n\u003cp\u003eA: The Extended Serial Bus (ESB) is a proprietary Yokogawa bus standard engineered for high-availability communication. The EC402 coupler converts the internal controller signals to the ESB format, allowing the system to scale and support a wider array of distributed I\/O modules without compromising speed.\u003c\/p\u003e\n\u003cp\u003eQ: Is this module hot-swappable in a running system?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the EC402 supports hot-swapping within a redundant I\/O rack configuration. However, strict adherence to site safety procedures and system-level diagnostic checks is required before removal or installation to ensure no process disruption occurs during the transition.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Placement:\u003c\/strong\u003e Insert the EC402 into the designated ESB bus coupler slot on the I\/O node baseplate. Ensure that the locking lever is fully closed to maintain the physical connection with the backplane pins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Integrity:\u003c\/strong\u003e Use only factory-specified ESB bus cables. Ensure connectors are seated firmly and the locking tabs are engaged to protect against vibration-induced contact loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Verify that the I\/O node rack is properly bonded to the cabinet’s main ground busbar. Reliable grounding is critical for the high-frequency communication signals carried across the ESB bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Upon installation, verify the module status in the engineering station or system maintenance console to ensure it is recognized by the Field Control Station (FCS).\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49203593052412,"sku":"EC402-51-S1","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/EC402-51.jpg?v=1781143633","url":"https:\/\/www.electronicplc.com\/products\/ec402-51-s1-yokogawa-esb-bus-coupler-module-new-original-stock","provider":"Electronic PLC","version":"1.0","type":"link"}