{"product_id":"ec402-51-yokogawa-dual-channel-interface-esb-bus-coupler-module","title":"EC402-51 Yokogawa Dual-Channel Interface ESB Bus Coupler Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Yokogawa EC402-51 serves as a fundamental communication bridge within the CENTUM VP and CENTUM CS 3000 integrated control systems. While often confused with standalone controllers, this specific model is a dedicated ESB (Extended Serial Backplane) Bus Coupler Module. Its primary role is to facilitate high-speed, transparent data transfer between the Field Control Unit (FCU) and various local or remote node units. By providing a dual-redundant link, the EC402-51 ensures that process data from I\/O modules is transmitted to the processor with maximum integrity and minimal latency, maintaining the \"always-on\" requirement of modern industrial facilities.\u003c\/p\u003e\n\u003ch3\u003eCritical Engineering Parameters\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Data\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\u003eModel Designation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEC402-51\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInterface Protocol\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eESB Bus (Extended Serial Backplane)\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\u003eDual Redundancy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSupported (Dual-bus configuration)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMaximum Distance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUp to 10 meters (using standard ESB bus cables)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Input\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5 V DC (Internal System Power)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Draw\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 A maximum\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 mm x 130 mm x 45 mm (Standard FIO Form Factor)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Mass\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMounting Style\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBaseplate Slot Mount\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eStrategic Field Implementations\u003c\/h3\u003e\n\u003cp\u003eThis bus coupler is an essential component for distributed I\/O architectures where reliability is non-negotiable. Its implementation is critical in the following areas:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Expansion:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLinking additional I\/O nodes to an existing Field Control Unit to increase the total tag count of a DCS.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRedundant Control Strategies:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilizing dual EC402-51 modules to create a fault-tolerant communication backbone, ensuring that a single cable or module failure does not halt the production line.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCabinet Internal Routing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eManaging high-speed data flow between the main processor and the I\/O racks within a centralized control room environment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData Intensive Loops:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupporting high-density analog and digital modules that require frequent updates and high bandwidth to maintain loop stability in fast-acting processes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the EC402-51 a standalone PID controller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the EC402-51 is an ESB Bus Coupler Module. It functions as a communication interface between control units and I\/O modules rather than performing independent control logic or temperature regulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this module support redundant configurations?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, it is designed for high-availability systems. Two EC402-51 modules can be installed in a single Field Control Unit to provide fully redundant ESB bus communication paths.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What type of cabling is required for the EC402-51?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: It requires specialized Yokogawa ESB Bus cables (such as the YCB301). These cables are designed to handle the high-speed 128 Mbps data rates required by the backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this module be hot-swapped during operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, provided the system is configured for redundancy. If a dual-bus setup is in place, one module can be replaced while the other maintains active communication, preventing system downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the EC402-51 handle signal distance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: This module is intended for local bus expansion. It supports cable lengths up to 10 meters. For distances exceeding this, fiber optic repeaters or different coupler models would be necessary.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":45891101589677,"sku":"EC402-51","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/yokogawa_ec402-51_1.jpg?v=1775554230","url":"https:\/\/www.maxwellplc.com\/products\/ec402-51-yokogawa-dual-channel-interface-esb-bus-coupler-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}