Product Description
The ANB11D-225/BU2A is a specialized high-availability optical node designed for the Yokogawa CENTUM VP control system, specifically for long-distance I/O expansion. It enables the Extended Serial Backplane (ESB) bus to be extended up to 5 km via fiber optic cabling, providing a highly reliable and interference-free communication path.
By converting electrical ESB signals into optical signals, this unit ensures complete immunity to electromagnetic interference (EMI) and eliminates issues related to ground potential differences, making it ideal for large-scale and distributed industrial plants.
The unit is equipped with a dual-redundant 220–240 V AC power supply, ensuring continuous operation even if one power source fails. The BU2A connector interface supports flexible system architectures, including star and chain topologies, enabling efficient and scalable network design.
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Primary Function: Optical ESB bus node for long-distance I/O
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Transmission Medium: Fiber optic (up to 5 km)
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Power Supply: Dual-redundant (220–240 V AC)
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Connector Type: BU2A (optical interface)
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Topology Support: Star and chain configurations
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Application Focus: Remote, large-scale distributed control systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Designation | ANB11D-225/BU2A |
| Communication Interface | Dual-redundant optical ESB bus |
| Maximum Transmission Range | 5 km (via optical fiber) |
| Power Supply Redundancy | Dual-redundant (active-active) |
| Input Voltage Range | 220–240 V AC (50/60 Hz) |
| Power Consumption | 230 VA / 120 W (max load) |
| I/O Capacity | 8 slots for CENTUM VP I/O modules |
| Connector Configuration | BU2A (optical ESB connector) |
| Environmental Monitoring | Optional HKU interface |
| Mounting Standard | 19-inch rack mount (4 × M5 screws) |
| Net Weight | 10 kg |
Operational Applications
The ANB11D-225/BU2A is widely used in offshore oil platforms, mining operations, and large chemical refineries. It is designed to connect Remote Instrument Enclosures (RIEs) that are physically distant from the central control room.
Its 5 km optical reach allows engineers to centralize control while maintaining reliable, high-speed communication with distributed field assets. The system architecture supports flexible and scalable deployment, making it suitable for complex industrial environments.
Technical FAQ
Q: Does the 5 km limit apply to both single-mode and multi-mode fiber?
A: The achievable distance depends on the optical repeater modules (e.g., ANT401) and the type of fiber used. In typical CENTUM VP deployments, high-quality fiber optic infrastructure is required to achieve the full 5 km range.
Q: Can this unit be monitored for internal health?
A: Yes. The unit supports the HKU (Housekeeping Unit) interface, which enables monitoring of internal cabinet conditions such as temperature and fan status, allowing for proactive maintenance and improved system reliability.
| 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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