{"product_id":"ec401-10-yokogawa-centum-vp-esb-bus-coupler-module","title":"EC401-10 | Yokogawa CENTUM VP ESB Bus Coupler Module","description":"\u003ch2\u003e\u003cspan class=\"qwen-markdown-text\"\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eThe Yokogawa EC401-10 ESB Bus Coupler Module delivers high-speed, deterministic communication between CENTUM VP Field Control Stations and distributed I\/O racks via the Enhanced Serial Bus (ESB) architecture. It resolves the challenge of extending reliable I\/O connectivity in compact or modular control cabinets by supporting up to nine downstream I\/O units within a 10-meter range. With a dedicated 128 Mbps transmission speed optimized for process data, the EC401-10 ensures minimal latency for critical control loops in power generation, oil and gas, and chemical processing applications. Its lightweight, space-efficient design simplifies panel layout while maintaining the robustness required for continuous industrial operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"qwen-markdown-heading\"\u003e\u003cspan class=\"qwen-markdown-text\"\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable class=\"qwen-markdown-table\"\u003e\n\u003cthead class=\"qwen-markdown-table-thead\"\u003e\n\u003ctr class=\"qwen-markdown-table-thead-tr firstRow\"\u003e\n\u003cth class=\"qwen-markdown-table-thead-tr-th\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eParameter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth class=\"qwen-markdown-table-thead-tr-th\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eSpecification\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody class=\"qwen-markdown-table-tbody\"\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eProduct Type\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eESB Bus Coupler Module\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eBrand \/ Series\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eYokogawa \/ CENTUM VP Compatible\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eModel\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eEC401-10\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003ePrimary Function\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eESB Bus Interface for I\/O Module Communication\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eConnectable Units\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eMaximum 9 I\/O modules per coupler\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eTransmission Speed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003e128 Mbps (dedicated I\/O data channel)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eTransmission Distance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eMaximum 10 meters between coupler and I\/O units\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eCurrent Consumption\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003e0.5 A (for N-IO\/FIO, 1-Port configuration)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eApproximately 0.24 kg (0.53 lbs)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eExplosion Protection\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eStandard type (non-hazardous location) \/ Basic type\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eMounting\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eDIN rail or dedicated node slot (CENTUM VP compatible)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eBus Architecture\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eESB (Enhanced Serial Bus) for deterministic I\/O scanning\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"qwen-markdown-table-tbody-tr\"\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eTarget Applications\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd class=\"qwen-markdown-table-tbody-tr-td\"\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eProcess control, power plants, refinery I\/O expansion\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 class=\"qwen-markdown-heading\"\u003e\u003cspan class=\"qwen-markdown-text\"\u003eModel Code Decomposition\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eThe Yokogawa EC401-10 follows the structured naming convention used for CENTUM VP ESB bus components. The suffix provides immediate insight into the module's protection rating and functional variant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003ePart Number: EC401-10\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"qwen-markdown-list list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eEC\u003c\/span\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Series identifier for ESB Bus communication modules within Yokogawa's CENTUM architecture.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003e401\u003c\/span\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Functional code specifying the ESB Bus Coupler role for connecting I\/O racks to the Field Control Station.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003e-10\u003c\/span\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Variant suffix defining hardware configuration and certification:\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"qwen-markdown-list list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eFirst digit (1)\u003c\/span\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Explosion protection classification → \"1\" = Standard type (no explosion protection), suitable for general industrial panels.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eSecond digit (0)\u003c\/span\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Functional revision\/base type → \"0\" = Basic configuration with single-port ESB interface and standard current rating (0.5 A).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003eNote\u003c\/em\u003e\u003cspan class=\"qwen-markdown-text\"\u003e: Alternative suffixes (e.g., -00, -21) may indicate intrinsically safe variants, dual-port redundancy, or regional certifications. Always verify the full suffix against project specifications and Yokogawa's certification documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"qwen-markdown-heading\"\u003e\u003cspan class=\"qwen-markdown-text\"\u003eInstallation Recommendations and Wiring Guidelines\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eMount the EC401-10 securely on a 35mm DIN rail or within the designated CENTUM VP node slot, ensuring adequate clearance for ESB cable routing. Maintain the maximum 10-meter transmission distance between the coupler and the farthest I\/O module to guarantee signal integrity at 128 Mbps.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eUse Yokogawa-specified ESB cables with proper shielding and connector types (typically proprietary multi-conductor or twisted-pair with locking connectors). Terminate connections firmly to prevent intermittent communication faults. For systems requiring redundancy, install dual EC401-10 modules configured in hot-standby mode, with physically separated cable paths to mitigate single-point failure risks. Power the module from a regulated 24 VDC supply capable of delivering at least 0.5 A per coupler, plus margin for connected I\/O units. After installation, verify communication status via the module's LED indicators: a steady green light confirms successful ESB handshake with the FCS, while blinking amber may indicate configuration mismatches or cable faults. Perform a loopback test using CENTUM VP engineering tools before commissioning to validate end-to-end I\/O scanning performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 class=\"qwen-markdown-heading\"\u003e\u003cspan class=\"qwen-markdown-text\"\u003eFrequently Asked Questions (FAQ)\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eQ: Can the EC401-10 connect to third-party I\/O modules?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eA: No. The EC401-10 is designed exclusively for Yokogawa CENTUM VP-compatible I\/O modules using the proprietary ESB protocol. Third-party I\/O integration requires a separate protocol gateway or remote I\/O adapter that translates to standard fieldbus formats.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eQ: What is the practical limit for the number of I\/O points per EC401-10?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eA: While the coupler supports up to 9 physical I\/O units, the total point count depends on each module's density (e.g., 16-channel digital vs. 8-channel analog). Consult the CENTUM VP engineering manual to calculate scan time and bandwidth utilization for your specific configuration to ensure deterministic performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eQ: Is the EC401-10 hot-swappable?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eA: Yes, when installed in a CENTUM VP node with redundant configuration and proper system settings. However, best practice is to place the associated control station in maintenance mode via the engineering station before physical replacement to avoid transient I\/O communication alarms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eQ: Can I extend the 10-meter transmission distance?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eA: The 10-meter limit is defined by the ESB electrical specification at 128 Mbps. For longer distances, consider using fiber-optic ESB extenders (if supported by your system version) or relocating the I\/O rack closer to the Field Control Station. Do not exceed the specified distance without Yokogawa-approved extension hardware.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-strong\"\u003eQ: How does the explosion protection rating affect installation?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"qwen-markdown-text\"\u003eA: The EC401-10 with suffix \"-10\" is a standard type for non-hazardous locations. For installations in classified hazardous areas (e.g., Zone 2, Class I Div 2), select a variant with appropriate intrinsic safety or explosion-proof certification (e.g., suffix \"-21\" or \"-30\") and follow all local electrical codes for hazardous location wiring and enclosure requirements.\u003c\/span\u003e\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52522698539317,"sku":"EC401-10","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/EC401-10.jpg?v=1775031076","url":"https:\/\/www.5gplc.com\/products\/ec401-10-yokogawa-centum-vp-esb-bus-coupler-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}