Yokogawa ANB11D-615/BU2A Fiber optic ESB bus node unit

By leveraging fiber optic technology, the ANB11D-615/BU2A eliminates electrical noise interference, enabling operation in harsh industrial conditions, including areas with high electromagnetic interference (EMI) or long-distance data transmission requirements. This product is widely adopted in power generation, chemical processing, and large-scale manufacturing facilities.

Technical Specifications

Product Applications

The ANB11D-615/BU2A Fiber Optic ESB Bus Node Unit is widely applied in industrial automation and process control. Its key applications include:

• Distributed Control Systems (DCS): Acts as an interface between field devices and the central control system.

• Process Monitoring: Enables high-speed and interference-free data acquisition from sensors and actuators.

• Power Plants: Supports remote monitoring and control of turbines, generators, and auxiliary equipment.

• Chemical and Petrochemical Industries: Ensures reliable communication in hazardous and EMI-prone environments.

• Large Manufacturing Facilities: Integrates multiple ESB segments over long distances with fiber optic cabling.

• High-Reliability Systems: Provides redundancy and fault detection in critical industrial processes.

Product Advantages

1. High Noise Immunity – Fiber optic communication eliminates susceptibility to electromagnetic and radio frequency interference.

2. Long-Distance Communication – Supports single-mode fiber transmission up to 10 km, ideal for large plants or remote segments.

3. Deterministic Data Transfer – Ensures predictable and reliable communication, essential for process-critical systems.

4. Compact and Lightweight Design – The small form factor allows flexible installation in control cabinets or panels.

5. Energy Efficient – Low power consumption reduces system energy demands.

6. Flexible Mounting Options – Can be mounted on DIN rails or panels, providing installation versatility.

7. Diagnostic Features – LED indicators for power, communication status, and fault enable quick visual verification.

8. Seamless Integration – Fully compatible with Yokogawa CENTUM ESB network systems for plug-and-play deployment.

FAQ

Q1: What type of fiber optic cables are compatible with this unit?

A1: The ANB11D-615/BU2A supports both single-mode and multi-mode fiber optic cables, allowing flexibility in installation distance and infrastructure.

Q2: Can this bus node unit handle redundant ESB network configurations?

A2: Yes, it supports network redundancy, allowing seamless switching between primary and secondary fiber optic paths to ensure continuous operation.

Q3: What is the maximum data transmission speed of this unit?

A3: The maximum communication speed supported is 125 Mbps, which meets the requirements for high-speed fieldbus operations.

Q4: How is the unit powered, and what are the voltage tolerances?

A4: The unit is powered by 24 VDC, with a tolerance of ±10%, providing stable operation within industrial power supply variations.

Q5: Does it support diagnostic monitoring of the ESB network?

A5: Yes, LED indicators provide real-time diagnostics for communication status, power presence, and fault conditions.

Q6: What environmental conditions can the unit withstand?

A6: The unit operates reliably within 0°C to 55°C and 5% to 95% relative humidity, non-condensing. Storage temperatures can range from -20°C to 70°C.

Q7: Is this unit compatible with other Yokogawa ESB devices?

A7: Yes, it is fully compatible with all Yokogawa ESB network modules, allowing seamless integration into existing systems.

Q8: How long can the unit transmit data over fiber optic cables?

A8: The maximum transmission distance is up to 10 km for single-mode fiber and 2 km for multi-mode fiber.

Q9: Can the unit be mounted in tight control panels?

A9: Yes, its compact dimensions (482.6 × 221.5 × 205 mm) and DIN rail/panel mounting flexibility make it suitable for confined spaces.

Q10: How is the unit connected to field devices?

A10: Field devices connect through the ESB network via fiber optic cables, with automatic recognition and data mapping handled by the DCS.