The Yokogawa EC401-11 ESB Bus Coupler Module is a high-performance communication module designed for Yokogawa’s CENTUM VP system. It serves as an interface that connects the Field Control Unit (FCU) with Node Units via the ESB bus, enabling real-time data transmission and system integration across various control architectures. This module supports both non-redundant and dual-redundant configurations and is specifically tailored for N-IO (Network-based I/O) and FIO (Field I/O) environments.

By enabling reliable communication over short distances (up to 10 meters) at high speed (128 Mbps), the EC401-11 significantly contributes to enhancing system reliability and scalability. It is also engineered for compatibility with a range of Field Control Units such as AFV30S/D, AFV40S/D, A2FV50S/D, and A2FV70S/D, ensuring integration flexibility.

Technical Specifications

Applications

• Industrial Process Control Systems – Seamlessly connects control units and remote I/O over a secure ESB network.

• Power Generation Facilities – Ensures stable and high-speed communication between distributed control elements.

• Oil & Gas Automation Systems – Enables reliable data integration for upstream and downstream applications.

• Pharmaceutical Manufacturing – Facilitates GMP-compliant data handling via dual-redundant communication.

• Chemical Processing Plants – Enhances system scalability and robustness for critical control operations.

Advantages

• High-Speed Communication: 128 Mbps transmission ensures fast and reliable data transfer.

• Flexible System Configuration: Supports up to 9 node units with dual-redundant capability.

• Compact and Lightweight: Space-saving design simplifies installation and system layout.

• Robust Compatibility: Compatible with multiple Field Control Units across the CENTUM VP platform.

• Enhanced System Reliability: Redundant bus setup ensures fail-safe operation in mission-critical environments.

• Compliant with Global Standards: Meets safety and performance requirements for industrial automation.

FAQ

Q1: What is the primary function of the EC401-11 module?

A1: It acts as a communication interface between Field Control Units and Node Units via the ESB bus.

Q2: Can the EC401-11 be used in redundant systems?

A2: Yes, it supports dual-redundant configurations using slots 7 and 8 of the control unit.

Q3: What is the transmission distance supported by the module?

A3: The maximum transmission distance is 10 meters.

Q4: How many node units can be connected to one EC401-11 module?

A4: Up to 9 node units such as ANB10S/D and ANT401/411/421.

Q5: Is this module compatible with SEM (Sequence of Events Manager)?

A5: Yes, but it requires style 2 or later versions.

Q6: What is the current consumption of the EC401-11?

A6: The module consumes 0.5 A of current.

Q7: Is the EC401-11 explosion-proof?

A7: The -E suffix model provides explosion protection.

Q8: Which field control units are compatible with this module?

A8: Compatible units include AFV30S/D, AFV40S/D, A2FV50S/D, and A2FV70S/D.

Q9: Can this module be used without redundant configuration?

A9: Yes, it can be used in non-redundant mode by installing it in slot 7.

Q10: What are the dimensions and weight of the module?

A10: The dimensions are 130 x 129.5 x 32.8 mm, and the weight is approximately 0.24 kg.