Product Overview

The Yokogawa EC401-50 is a specialized communication interface module designed to facilitate high-speed data transmission between Field Control Units (FCU) and I/O node units. Functioning as the primary bridge for the Extended Serial Backplane (ESB) bus, this module enables the expansion of the CENTUM VP and CENTUM CS 3000 control systems by connecting the main FCU chassis to remote ANB10 or ANB11 node units.

By utilizing the EC401-50, process engineers can distribute I/O modules across multiple racks while maintaining a centralized control logic environment. The module is engineered to provide the timing and synchronization required for real-time process control, ensuring that signal latency is minimized across the ESB bus architecture. It is an essential component for large-scale industrial plants that require high-density I/O distribution across extensive control cabinet arrays.

Technical Specifications

• Manufacturer: Yokogawa

• Model Number: EC401-50

• Module Type: ESB Bus Coupler Module

• Compatibility: AFV30S, AFV30D, AFV40S, AFV40D, A2FV50S, A2FV50D

• Bus Interface: ESB Bus (Extended Serial Backplane)

• Transmission Distance: Max. 10 meters (Standard ESB cable)

• Number of Connectors: 2 (for ESB bus cable connection)

• Operating Temperature: -20°C to +70°C

• Current Consumption: Max. 0.5 A (at 5 V DC)

• Weight: 0.20 kg

• Dimensions: 31.2 mm x 125 mm x 130 mm

• Origin: Japan

Key Technical Characteristics

• Seamless Bus Extension: Allows for the vertical or horizontal expansion of Field Control Units by linking the local backplane to additional I/O nodes without degradation of signal speed.

• Galvanic Isolation Protection: Features built-in electrical isolation to protect the sensitive processor modules in the FCU from noise interference and ground loops generated within remote I/O racks.

  
  

• Deterministic Communication: Optimized for the Yokogawa FIO architecture, ensuring that all input and output data across the ESB bus is refreshed within the system's strict scan-time requirements.

• High-Availability Redundancy: Supports installation in duplexed Field Control Units. In a redundant configuration, two EC401-50 modules work in parallel to provide an uninterrupted communication path if a hardware or cable fault occurs.

  
  

• Industrial Hardening: Designed to meet ISA G3 environmental standards, making it highly resistant to corrosive chemical gases and ensuring long-term reliability in harsh petrochemical and power plant environments.

• Standardized Connectivity: Utilizes standard Yokogawa ESB bus cables (YCB301), simplifying the physical installation and reducing the potential for wiring errors during system commissioning.