The Yokogawa EC401-51 ESB Bus Coupler Module is an advanced communication interface module designed to establish seamless data exchange between Field Control Units (FCUs) and Node Units through the ESB Bus within the CENTUM VP control system. Designed for N-IO/FIO platforms, this module supports reliable communication and scalability for distributed I/O environments. It ensures robust and high-speed data transfer, contributing to efficient control and monitoring in critical industrial automation systems.

The EC401-51 supports single or dual-redundant configurations, enhancing system availability and fault tolerance. It is an essential component in Yokogawa’s distributed control systems (DCS), particularly suitable for industries requiring high reliability such as oil and gas, power generation, petrochemical, and pharmaceuticals.

Technical Specifications

Applications

• Distributed Control Systems (DCS): Core component in Yokogawa CENTUM VP systems for connecting I/O nodes.

• Redundant Communication Networks: Ensures uninterrupted data transfer in dual-redundant configurations.

• Industrial Automation: Oil & gas, chemical plants, and power facilities where data reliability is crucial.

• Field Network Integration: Bridges field devices to control units through ESB Bus.

Advantages

• High-Speed Communication: Operates at 128 Mbps for rapid data exchange between modules.

• Redundancy Support: Allows dual installation to maintain system availability during faults.

• Compact & Lightweight: Easy installation with small form factor and low weight.

• Up to 9 Node Connections: Expands system capabilities without compromising performance.

• Robust Compatibility: Supports various FIO model units and integrates with CP471 processors.

• Explosion Protection Option: Ensures safety in hazardous industrial environments (with -E suffix).

• Designed for Reliability: Built for critical infrastructure with continuous operation requirements.

Frequently Asked Questions (FAQ)

Q1: What does the EC401-51 module connect?

A1: It connects the Field Control Unit (FCU) to the Node Unit over the ESB Bus.

Q2: How many units can be connected to one EC401-51?

A2: Up to 9 Node Units such as ANB10S, ANB10D, ANT401, etc.

Q3: Is the EC401-51 compatible with CP471 processor modules?

A3: Yes, provided it is style code S3 or later.

Q4: Can this module be used in a redundant configuration?

A4: Yes, it supports dual-redundant ESB Bus setups using two modules in slots 7 and 8.

Q5: What is the transmission speed of the EC401-51?

A5: 128 Mbps, suitable for high-speed industrial communication.

Q6: What is the required style version for SEM (Sequence of Events Manager)?

A6: Style 2 or later is required to support SEM.

Q7: Where should it be installed in the FCU?

A7: Slot 7 for single configuration; slots 7 and 8 for redundant configuration.

Q8: Does it support explosion-proof installations?

A8: Yes, with the -E suffix version.

Q9: What is the module’s weight and dimension?

A9: It measures 130 x 129.5 x 32.8 mm and weighs approximately 0.24 kg.

Q10: Is this module part of the CENTUM VP platform?

A10: Yes, it is specifically designed for the Yokogawa CENTUM VP integrated control system.