GENERAL

• The ESB Bus Coupler Module is a communication module to connect the Field Control Unit and the Node Unit for ESB Bus via the ESB bus.
• This module can be installed in the Field Control Unit for FIO (AFV30S, AFV30D, AFV40S, AFV40D, A2FV50S, A2FV50D, A2FV70S, A2FV70D).
• By installing two modules in the Field Control Unit for FIO, dual redundant ESB bus can be configured.

STANDARD SPECIFICATIONS

• 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

Overview

• Part Number: EC401-50-S3
• Function: Acts as a bus coupler between the Enhanced Serial Backplane (ESB) and field devices or I/O modules.
• Key Role: Facilitates communication between the Field Control Station (FCS) and I/O modules (e.g., analog/digital input/output, safety systems).

Key Features

1. Enhanced Serial Backplane (ESB) Compatibility
   • Supports high-speed communication (up to 153.6 kbps) between the FCS and I/O modules.
   • Enables deterministic data transfer for real-time process control.
2. Redundancy Support
   • Optional redundant configuration for critical applications (e.g., dual ESB couplers).
   • Seamless switchover during failures to ensure uninterrupted operation.
3. Flexible I/O Integration
   • Connects to Yokogawa’s Enhanced Series I/O modules (e.g., AEN202, AAI143, ADV151).
   • Supports hot-swapping of I/O modules for maintenance without downtime.
4. Diagnostics and Monitoring
   • Built-in diagnostics for module health, communication errors, and field wiring faults.
   • Status indicators (LEDs) for quick troubleshooting.
5. Robust Design
   • Operates in harsh industrial environments (-20°C to +70°C).
   • Conforms to IEC 61131-2 standards for shock/vibration resistance.

Technical Specifications

• Power Supply: 24 VDC (typical for Yokogawa systems).
• Communication Protocol: Yokogawa’s proprietary ESB protocol (optimized for high reliability).
• Connectors:
  • ESB port: For connection to the FCS or upstream coupler.
  • Field-side ports: For I/O modules or field devices.
• Certifications: Compliant with global industrial standards (e.g., CE, ATEX for hazardous areas if applicable).

Applications

• Integration with CENTUM VP DCS for oil & gas, petrochemical, and power generation plants.
• Safety instrumented systems (SIS) requiring redundant communication paths.
• Batch processes and continuous control systems with modular I/O requirements.

Integration Notes

• Compatibility: Works with Yokogawa’s Enhanced Series I/O modules (e.g., EC401-50-S3 pairs with AEN202 Ethernet interface modules).
• Configuration: Use Yokogawa’s Engineering Windows (EWS) or PRM (Plant Resource Manager) for setup and diagnostics.
• Redundancy: For mission-critical systems, pair with a redundant ESB coupler (EC401-50-S3R).

SKU: YOKO-EC40150S3