Yokogawa EC401-50 S3
Yokogawa EC401-50 S3
Yokogawa EC401-50 S3
Yokogawa EC401-50 S3
Yokogawa EC401-50 S3
Yokogawa EC401-50 S3
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EC401-50 S3

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The Yokogawa EC401-50 S3 is an ESB bus coupler module designed to provide communication between the Field Control Unit and Node Unit via ESB bus. It supports high-speed data transmission and flexible system expansion up to multiple connected units.
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Technical specifications for EC401-50 S3

  • Manufacturer:
    Yokogawa
  • Part Number:
    EC401-50 S3
  • Product Family:
    Centum CS-Centum VP
  • Product Type:
    ESB Bus Coupler Module
  • Function:
    ESB bus interface function
  • Number of connectable units:
    Max. 9 units (*1)
  • Transmission speed:
    128 Mbps (I/O module data transmission)
  • Transmission distance:
    Max. 10 m
  • Current consumption:
    0.5 A
  • Model:
    EC401=ESB Bus Coupler Module (for N-IO/FIO, 1-Port)
  • Suffix Codes -5:
    Standard type with no explosion protection
  • Suffix Codes 0:
    Basic type
  • Weight:
    0.2 kg
  • Estimated shipping dimensions:
    3.2x12.8x13cm
  • Tariff Code:
    8479899990
  • Country of origin:
    Japan
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Installation Compatibility Application Scenarios

Features:

  • ESB bus interface enabling communication between Field Control Unit and Node Unit
  • High-speed 128 Mbps data transmission supporting multiple connected I/O units
  • Flexible redundancy configuration supporting single and dual ESB bus architectures
The Yokogawa EC401-50 S3 is designed as an ESB bus coupler module for communication between Field Control Units and Node Units within ESB bus systems. It provides a structured interface that enables data exchange across FIO-based control architectures. The Yokogawa EC401-50 S3 is installed within designated FCU slots and operates as a key communication component in the ESB bus network. Its design supports both standard and extended system configurations.The Yokogawa EC401-50 S3 supports up to 9 connectable units including ANB and ANT series modules, allowing scalable system expansion. It operates with a fixed transmission speed of 128 Mbps for I/O data communication, ensuring synchronized data handling across connected devices. The transmission distance is limited to 10 m, maintaining defined communication boundaries. The module also maintains a stable current consumption of 0.5 A during operation.

S3 can be deployed in either non-redundant or dual-redundant ESB bus setups. Non-redundant configurations use a single module in slot 7, while redundant systems require installation in both slot 7 and slot 8. It is compatible with multiple Field Control Units including AFV and A2FV series models. Proper installation must follow defined slot and module pairing rules.

The Yokogawa EC401-50 S3 also supports integration with CP471 processor modules when used with style code S3 or later. Additional system requirements include installation within a keyed metallic cabinet to meet safety and EMC standards. It is also applicable in environments using Sequence of Events Manager (SEM) when style 2 or later is used. The module is part of Yokogawa’s structured ESB bus communication system within field control applications.

The EC401-50 S3 Yokogawa ESB Bus Coupler Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Yokogawa EC401-50 S3 ESB Bus Coupler Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Yokogawa EC401-50 S3 ESB Bus Coupler Module Specs

General

  • Manufacturer Yokogawa
  • Model EC401-50 S3
  • Condition New Original ready stock
  • Product Family EC401-51 S3,EC401-10 S2,EC401-E1 S3
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Slot Fixing: In the Field Control Unit (FCU), this module must be installed in dedicated slots 7 and 8.
  • Redundant Deployment: For ESB bus redundancy, one identical EC401 module must be installed in each of slots 7 and 8.
  • Standalone Configuration: In a non-redundant configuration, the module is installed in slot 7, while slot 8 must be fitted with an empty slot cover to meet heat dissipation and protection requirements.
  • Environmental Sealing: To comply with electromagnetic compatibility (EMC) and safety standards, the module must be installed in a lockable metal cabinet.
  • Processor Matching: S3 style is required for use with the CP471 processor module; older styles may not be compatible.
  • Event Management: This module supports SEM (Event Sequence Manager) functionality, but in a Vnet/IP environment, Style 2 or higher is required.
  • System Integration: Fully compatible with CENTUM VP series control stations, such as AFV30, AFV40, and the latest A2FV50/70 series.
  • Node Expansion: A single EC401 module supports connecting up to 9 node units (such as ANB10/11), and the transmission path can be expanded via repeater modules.
  • Remote Expansion: In large chemical plants, the EC401 connects to remote I/O nodes located outside the cabinet, enabling high-speed long-distance signal acquisition.
  • High-Reliability Control: In critical processes such as power or petrochemical industries where downtime is not permitted, dual EC401 modules are used to build a redundant communication bus, ensuring uninterrupted control in the event of a single-path failure.
  • Legacy System Upgrade: When migrating legacy systems such as CENTUM CS 3000 to CENTUM VP, the EC401 serves as a key hardware-level interface for a smooth transition to the bus architecture.
  • Intensive monitoring: In complex systems requiring the connection of numerous transmitters and actuators, the EC401 can be cascaded with multiple node units to support centralized processing of up to hundreds of I/O points.
Description
The Yokogawa EC401-50 S3 is an ESB bus coupler module that functions as an interface for connecting the Field Control Unit and Node Unit through the ESB bus. It is designed for installation in Field Control Units for FIO systems, including AFV30S, AFV30D, AFV40S, AFV40D, A2FV50S, A2FV50D, A2FV70S, and A2FV70D. The Yokogawa EC401-50 S3 serves as a key communication link within the ESB bus architecture.

The Yokogawa EC401-50 S3 supports a maximum of 9 connectable units, including ANB10S, ANB10D, ANT401, ANT411, and ANT421. It provides a transmission speed of 128 Mbps for I/O module data communication, ensuring structured and synchronized data exchange across connected units. The transmission distance is limited to a maximum of 10 m within the ESB bus configuration.

The Yokogawa EC401-50 S3 consumes 0.5 A of current during operation. It is designed as a single-port ESB bus coupler module (EC401 = ESB Bus Coupler Module for N-IO/FIO). The suffix code -5 represents the standard type without explosion protection, while suffix code 0 indicates the basic configuration type EC401-50 S3.

The Yokogawa EC401-50 S3 can be configured for either non-redundant or dual-redundant ESB bus systems. In non-redundant setups, it is installed in slot 7 of supported Field Control Units with slot 8 covered by a dummy module. For dual-redundant configurations, two modules are installed in both slot 7 and slot 8. Style code S3 or later is required for compatibility with CP471 processor modules.

The Yokogawa EC401-50 S3 is also subject to installation restrictions and system integration rules. It is used within FCU slot configurations alongside other communication modules such as ANT401, ANT411, A2EN402, and A2EN404, depending on system branching requirements. When used with Sequence of Events Manager (SEM) for Vnet/IP, style 2 or later is required. For safety and EMC compliance, installation must be within a keyed metallic cabinet.
Alternative Names
EC401-51 S3 EC401-E0 S3 EC401-E1 S3 EC401-10 S2
Technical notes
Yokogawa EC401-50 S3 is an ESB bus coupler module with ESB bus interface function, supporting up to 9 connectable units (ANB10S, ANB10D, ANT401, ANT411, ANT421), transmission speed 128 Mbps for I/O data, transmission distance max 10 m, current consumption 0.5 A, single-port configuration for N-IO/FIO, installed in FCU slots 7 (and 8 for dual-redundant ESB bus), compatible with AFV30S/AFV30D/AFV40S/AFV40D/A2FV50S/A2FV50D/A2FV70S/A2FV70D, and requiring style code S3 or later for CP471 compatibility.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How many units can be connected to EC401-50 S3?
Up to 9 units including ANB10S, ANB10D, ANT401, ANT411, and ANT421.
What determines compatibility with CP471 processors?
The module must be style code S3 or later to work with CP471.
How is the EC401-50 S3 installed in FCU slots?
It is installed in slot 7, while slot 8 is covered or paired depending on configuration.
How is redundancy configured in this system?
Dual-redundant ESB bus uses two modules installed in slots 7 and 8.