{"product_id":"ec401-50-yokogawa-esb-bus-coupler-module-n-io-fio-connectivity","title":"EC401-50 Yokogawa ESB Bus Coupler Module | N-IO\/FIO Connectivity","description":"\u003ch3\u003e\u003cstrong\u003eEC401-50 | Yokogawa ESB Bus Coupler Module\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eYokogawa EC401-50\u003c\/span\u003e\u003c\/strong\u003e is an ESB Bus Coupler Module designed to provide an ESB bus interface for N-IO\/FIO systems. It supports high-speed I\/O data transmission at 128 Mbps and connects up to nine compatible units. With a maximum transmission distance of 10 m, the \u003cstrong\u003eEC401 series\u003c\/strong\u003e supports communication between compatible control-system components. Its compact design and approximately 0.24 kg weight simplify hardware planning for distributed control system installations. This module suits industrial automation projects that require a defined ESB communication interface. Engineers should verify system compatibility, connection topology, and cable specifications before installation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e01 | Technical Identity and Performance Profile\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComplete Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eEC401-50\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEC401\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESB Bus Coupler Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESB bus interface for N-IO\/FIO systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Connectable Units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9 compatible units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O Data Transmission Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e128 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Transmission Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExplosion Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuffix code 5 specifies a standard type without explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBasic type, identified by suffix code 0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering note:\u003c\/strong\u003e The stated 128 Mbps value refers to I\/O module data transmission. It does not establish application throughput or end-to-end controller response time.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e02 | Model Architecture and Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCode Segment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDefinition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration Meaning\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEC401\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESB Bus Coupler Module\u003c\/td\u003e\n\u003ctd\u003eProvides the ESB bus interface for compatible N-IO\/FIO configurations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-5\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard type without explosion protection\u003c\/td\u003e\n\u003ctd\u003eIdentifies the specified non-explosion-protected configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e0\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBasic type\u003c\/td\u003e\n\u003ctd\u003eIdentifies the basic configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEC401-50\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComplete model code\u003c\/td\u003e\n\u003ctd\u003eSpecifies the full model for identification and replacement checks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering rule:\u003c\/strong\u003e Verify the complete \u003cstrong\u003eEC401-50\u003c\/strong\u003e designation against the installed hardware and Yokogawa documentation. Do not select a replacement based on the EC401 prefix alone.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e03 | ESB Communication Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEC401-50\u003c\/strong\u003e provides an ESB bus interface within a compatible N-IO\/FIO arrangement. Engineers must confirm the intended connection path and supported equipment before integrating the coupler.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus interface:\u003c\/strong\u003e Provides the specified ESB communication function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O data transfer:\u003c\/strong\u003e Supports a stated transmission speed of 128 Mbps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit connectivity:\u003c\/strong\u003e Supports up to nine compatible units under the specified configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistance planning:\u003c\/strong\u003e Requires the transmission path to remain within the 10 m maximum distance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower budgeting:\u003c\/strong\u003e Requires consideration of the stated 0.5 A current consumption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe maximum unit count does not automatically guarantee compatibility with every combination of I\/O hardware. Confirm the permitted topology and unit arrangement in the relevant system manual.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e04 | Suitable Systems and Industrial Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eEngineering Purpose\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eN-IO system integration\u003c\/td\u003e\n\u003ctd\u003eProvides an ESB interface within a supported N-IO hardware arrangement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFIO control-system infrastructure\u003c\/td\u003e\n\u003ctd\u003eSupports compatible field I\/O communication architecture.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistributed process control\u003c\/td\u003e\n\u003ctd\u003eConnects supported hardware within an engineered I\/O communication path.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl-system expansion\u003c\/td\u003e\n\u003ctd\u003eSupports an expansion plan when the total unit count and topology meet system requirements.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare-module replacement\u003c\/td\u003e\n\u003ctd\u003eRestores the specified interface function when the installed configuration matches.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial system maintenance\u003c\/td\u003e\n\u003ctd\u003eProvides a replacement option for qualified maintenance and hardware restoration work.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEquipment selection:\u003c\/strong\u003e The supplied specifications identify the module for N-IO\/FIO applications. They do not list every compatible controller, base unit, or I\/O module. Confirm the exact hardware combination before purchase.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e05 | Installation Planning and Commissioning\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the model:\u003c\/strong\u003e Confirm the complete \u003cstrong\u003eEC401-50\u003c\/strong\u003e code and required non-explosion-protected configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck system compatibility:\u003c\/strong\u003e Review the target N-IO\/FIO architecture and the approved module combination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan the topology:\u003c\/strong\u003e Keep the connected-unit count within the stated maximum of nine compatible units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck transmission distance:\u003c\/strong\u003e Keep the specified communication path within the 10 m limit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReview power requirements:\u003c\/strong\u003e Account for the stated 0.5 A current consumption in the system power budget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect connections:\u003c\/strong\u003e Check connectors, cable condition, seating, and routing against the installation manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify communication:\u003c\/strong\u003e Follow the manufacturer's commissioning procedure and confirm normal system communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecord the results:\u003c\/strong\u003e Document the module code, connection layout, observed status, and commissioning outcome.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow the approved shutdown, installation, and restart procedures for the host system. The supplied information does not specify connector pinouts, mounting details, or startup sequences.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e06 | Diagnostic Approach and Field Troubleshooting\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eEC401-50\u003c\/strong\u003e provides the ESB interface function, but the supplied specifications do not define its diagnostic codes or onboard fault indicators. Engineers should use the host system's documented diagnostics to investigate communication problems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication interruption:\u003c\/strong\u003e Inspect cable condition, connector seating, and the supported connection topology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnexpected I\/O communication behavior:\u003c\/strong\u003e Confirm the connected units and configuration against the approved system design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntermittent communication:\u003c\/strong\u003e Review connection stability and inspect the communication path for physical damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration-related faults:\u003c\/strong\u003e Verify the module code, hardware combination, and system configuration records.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-related concerns:\u003c\/strong\u003e Check the applicable power supply and current budget against system requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eField example:\u003c\/strong\u003e An I\/O segment stops communicating after maintenance. The engineer first checks the coupler's seating and the ESB cable connection. Next, the engineer verifies the connected-unit count and cable distance. If the physical checks pass, the engineer reviews the host system's diagnostic records before replacing the coupler. This workflow helps separate connection faults from configuration or hardware problems. It does not assume that the coupler independently identifies every fault.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e07 | Compatibility and Engineering Selection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBefore specifying the \u003cstrong\u003eEC401-50\u003c\/strong\u003e, verify the following requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe host system explicitly supports the EC401 series and the intended N-IO\/FIO arrangement.\u003c\/li\u003e\n\u003cli\u003eThe application uses the required ESB bus interface.\u003c\/li\u003e\n\u003cli\u003eThe total number of connected units does not exceed nine compatible units.\u003c\/li\u003e\n\u003cli\u003eThe specified transmission path does not exceed 10 m.\u003c\/li\u003e\n\u003cli\u003eThe power budget accounts for the module's 0.5 A current consumption.\u003c\/li\u003e\n\u003cli\u003eThe installation does not require explosion protection from this configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eReplacement guidance:\u003c\/strong\u003e When replacing an installed coupler, compare the complete model number, interface arrangement, cable route, connected-unit count, and host-system configuration. Confirm any hardware or firmware restrictions through the applicable Yokogawa documentation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e08 | Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFrom a system-integration perspective, a bus coupler must match the communication architecture rather than merely fit the hardware rack. The \u003cstrong\u003eEC401-50\u003c\/strong\u003e combines a single-port ESB interface with a specified 128 Mbps I\/O transmission speed. During troubleshooting, engineers should check physical connections and system topology before replacing communication hardware. A cable problem, excessive transmission distance, or unsupported unit combination can produce symptoms similar to a coupler failure. For expansion projects, calculate the connected-unit count and confirm the permitted arrangement before procurement. For replacement work, retain the original model code and record the cable layout. These checks help reduce commissioning delays and avoid ordering incompatible hardware.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e09 | Environmental and Compliance Considerations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe suffix \u003cstrong\u003e-5\u003c\/strong\u003e identifies a standard configuration without explosion protection. Do not use this designation as evidence of hazardous-area approval. The supplied specifications do not state an operating temperature range, ingress-protection rating, EMC certification, or other independent approval. Confirm the required environmental and regulatory conditions using the manufacturer's documentation for the intended installation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e10 | Packaging, Shipping, and Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Yokogawa EC401-50 ESB Bus Coupler Module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessories:\u003c\/strong\u003e Confirm included cables, connectors, and mounting hardware against the quotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping methods:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch target:\u003c\/strong\u003e Typically 24–48 hours after order confirmation, subject to stock and payment verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months, subject to the seller's written warranty terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder verification:\u003c\/strong\u003e Provide the complete model code, quantity, and destination when requesting a quotation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eContact Global PLC Spare HUB to confirm stock, accessory inclusion, delivery arrangements, and warranty coverage before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e11 | Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. What should I verify before expanding an ESB-connected I\/O arrangement?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the approved topology, compatible unit types, total connected-unit count, and cable distance. Keep the configuration within the specified limit of nine compatible units and the maximum 10 m transmission distance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2. Does the 128 Mbps specification guarantee a 128 Mbps application data rate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The stated figure describes I\/O module data transmission. Actual application performance depends on the complete control-system architecture and its communication requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3. Can I use the EC401-50 in an installation that requires explosion protection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied suffix definition identifies the -5 configuration as having no explosion protection. Select hardware that meets the installation's approval requirements and verify its certification documentation before use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4. What information helps diagnose repeated ESB communication interruptions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRecord the system configuration, connected-unit count, cable length, event timing, and available controller diagnostics. Also inspect connector seating and cable condition to help distinguish physical connection problems from configuration faults.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5. How can I reduce the risk of ordering an incompatible replacement coupler?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the full nameplate model, host-system details, existing connection layout, and required quantity. Ask the supplier to verify the exact configuration against the applicable Yokogawa hardware documentation.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRequest a Quote for EC401-50\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eLooking for a \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eYokogawa EC401-50\u003c\/span\u003e\u003c\/strong\u003e for system expansion, maintenance, or replacement? Contact \u003cstrong\u003eGlobal PLC Spare HUB\u003c\/strong\u003e with your model number, application details, quantity, and delivery destination. Our team can help review configuration requirements and confirm available shipping options through FedEx, UPS, or DHL.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/EC401.png?v=1792565669\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":67706842120374,"sku":"EC401-50","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/EC401-50.jpg?v=1792565343","url":"https:\/\/www.plcsparehub.com\/products\/ec401-50-yokogawa-esb-bus-coupler-module-n-io-fio-connectivity","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}