Yokogawa ANT401-50/CU1T Optical ESB Bus Repeater Master Module

The Yokogawa ANT401-50/CU1T Optical ESB Bus Repeater Master Module is a high-performance communication device designed for large-scale distributed control systems (DCS). Serving as the master unit in an Optical ESB (Enhanced System Bus) repeater network, it provides high-speed, deterministic data transmission between central control systems and remote field nodes across extended distances.

Utilizing advanced fiber-optic technology, the ANT401-50/CU1T ensures immunity to electromagnetic interference (EMI), high signal integrity, and extended transmission range. It is widely deployed in mission-critical industrial applications such as power generation, petrochemical, oil & gas, and automated manufacturing systems. With robust redundancy support, integrated diagnostics, and a durable industrial design, this module ensures reliable, continuous operation in demanding environments.

Product Specifications

Product Applications

The ANT401-50/CU1T module is ideal for industrial systems that require high-speed, long-distance, and interference-free communication. Typical applications include:

• Power Generation: Maintains real-time, deterministic communication between central control and remote turbine or generator nodes.

• Oil & Gas Industry: Ensures reliable communication in refineries, offshore platforms, and pipeline monitoring.

• Petrochemical Plants: Supports high-speed data transfer in EMI-heavy environments.

• Pharmaceutical & Food Processing: Guarantees accurate and compliant data exchange for batch processes.

• Large Manufacturing Plants: Integrates distributed control and automation systems across extensive facility areas.

Product Advantages

• High-Speed Optical Transmission: Delivers fast, deterministic data transfer over long distances.

• EMI Immunity: Fiber-optic technology eliminates interference for reliable performance.

• Redundant Communication Paths: Enhances system availability and fault tolerance.

• Extended Transmission Distance: Capable of transmitting data several kilometers without signal degradation.

• Rugged Industrial Design: Compact, durable, and suitable for harsh plant environments.

• Integrated Diagnostics: LED indicators and built-in monitoring simplify troubleshooting and maintenance.

FAQ

1. What fiber types are compatible with the ANT401-50/CU1T?

   Supports both single-mode and multimode fibers depending on required transmission distance.

2. Does this module support redundant communication paths?

   Yes, dual redundant optical paths are available for high system availability.

3. What is the maximum optical transmission distance?

   Typically up to 15 km using single-mode fiber, depending on network configuration.

4. How many nodes can be connected to the ESB network using this master module?

   Supports up to 64 nodes per network segment.

5. Is it compatible with Yokogawa CENTUM VP systems?

   Yes, fully compatible with CENTUM VP and other Yokogawa DCS systems.

6. What diagnostic features are included?

   LED indicators for power, communication, link, and fault; built-in self-check functions.

7. Can this module be hot-swapped?

   Yes, replacement is possible without shutting down the entire system if configured properly.

8. How does it handle transmission errors?

   Utilizes CRC error detection and automatic retransmission for data integrity.

9. What is the nominal power supply and consumption?

   Operates on 24 V DC (±10%) with approx. 10 W power consumption.

10. How is synchronization maintained between multiple nodes?

    Time-synchronized data exchange ensures deterministic communication across the ESB network.