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

Product Introduction

---

The Yokogawa ANB11D-615/BU2A Fiber Optic ESB Bus Node Unit is a high-performance fieldbus interface module designed to facilitate reliable communication between distributed control systems (DCS) and field devices over a fiber optic network. Specifically engineered for the CENTUM CS 3000/VP system environment, this bus node unit serves as a key interface for Extended Segment Bus (ESB) networks, ensuring deterministic and high-speed data transmission in complex industrial environments.

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.

---

Related Models

---

---

Popular Models from Yokogawa

---

Related Models

---

---

Popular Models from Yokogawa

---

Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.

As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.