Product Description
The ANB11D-B25/BU2A is a high-performance modular I/O interface designed as a critical communication bridge within the Yokogawa CENTUM VP distributed control system (DCS). It enables seamless integration of field instrumentation with central control logic, delivering a scalable and reliable platform for real-time data acquisition and process control.
By utilizing the ANB11D-B25/BU2A, system engineers can efficiently expand I/O capacity while maintaining precise and responsive process monitoring.
Designed for high-availability environments, the unit supports a dual-redundant power supply architecture to minimize downtime risks. The inclusion of the BU2A connector unit provides the ESB bus interface with integrated termination, simplifying system wiring and improving signal integrity.
Its rugged hardware design ensures reliable operation under harsh industrial conditions, including electromagnetic interference and temperature fluctuations, supporting long-term operational stability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | ANB11D-B25/BU2A |
| Product Category | Node Unit for dual-redundant ESB Bus |
| Optical Interface | Integrated optical repeater |
| Power Supply Architecture | Dual-redundant AC (220–240 V AC) |
| Frequency Compatibility | 50/60 Hz |
| Connector Type | BU2A (ESB Bus connector with built-in terminator) |
| Communication Protocol | ESB Bus (Synchronous) |
| Slot Capacity | Supports standard Yokogawa I/O modules |
| Environmental Rating | Basic type (no explosion protection) |
| Operating Temperature | -20°C to 70°C (G3-compliant variants) |
| Mounting Format | 19-inch rack mount (M5 screws) |
Application Scenarios
The ANB11D-B25/BU2A is widely deployed in industries requiring high-reliability process control and distributed system architectures, including:
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Chemical processing plants
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Power generation facilities
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Offshore oil and gas platforms
It is particularly effective in applications where I/O modules are located remotely from the Field Control Unit (FCU). With its integrated optical repeater, the unit enables long-distance communication without signal degradation, ensuring stable and accurate data transmission.
FAQ
What is the function of the BU2A connector in this assembly?
The BU2A serves as the physical ESB bus interface and includes a built-in terminator. This termination is essential for preventing signal reflection at the end of the bus segment, ensuring stable and reliable data communication within the DCS network.
Can this unit be hot-swapped in a live system?
Although Yokogawa systems support high-availability maintenance strategies, it is recommended to follow standard CENTUM VP procedures and isolate power before replacing the node unit to ensure operational safety and protect connected I/O modules.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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