Description

Product Overview

The Yokogawa EC402-50 S1 serves as a high-performance communication bridge within the CENTUM VP Distributed Control System (DCS) architecture. This ESB (Extended Serial Backplane) Bus Coupler Module facilitates seamless data exchange between a Field Control Unit (FCU) and various remote Node Units. By installing this module into the processor unit’s slots, engineers can extend the control network to incorporate additional I/O modules across the plant floor.

Core Functions and Capabilities

The primary purpose of the EC402-50 S1 is to provide a physical and logical interface for the ESB bus. It converts the internal processor signals into bus-compatible data streams, allowing the FCU to manage distributed hardware components efficiently. Consequently, this module is essential for system expansion, as it allows for the connection of multiple ESB Bus Node Units (such as the ANB10S/D or ANB11S/D) to a single controller.

High Availability and Redundancy

For mission-critical industrial processes, the EC402-50 S1 supports dual-redundant configurations. When two modules are utilized in a redundant pair, the system maintains continuous communication even if one module or cable path encounters a fault. This architecture significantly reduces the risk of unplanned downtime in sectors like oil and gas, power generation, and chemical processing.

Technical Specifications

• Manufacturer: Yokogawa Electric Corporation
• Model Identification: EC402-50 S1
• Module Classification: ESB Bus Coupler (Single or Dual Redundant)
• Compatible Control Units: AFV30S, AFV30D, AFV40S, AFV40D, A2FV50, A2FV70
• Interface Ports: 2 Ports per module for ESB Bus connection
• Maximum Transmission Distance: Up to 10 meters per bus segment
• Current Consumption: 0.5 A at 5 V DC
• Physical Weight: Approximately 0.24 kg
• Dimensions: 32 mm x 128 mm x 130 mm
• Operating Environment: Industrial-grade interference shielding and robust signal integrity

Installation and Integration

The module features a hot-swappable design that allows for simplified maintenance without disrupting the entire control loop. Because the EC402-50 S1 is engineered for high-density environments, it maintains low heat dissipation while providing high-speed data throughput. Furthermore, the integrated diagnostic LEDs provide immediate visual feedback regarding the status of the bus link and the health of the module hardware.