Yokogawa ANB10D-421 Node Unit for CENTUM VP & ProSafe-RS

Product Overview

The Yokogawa ANB10D-421/CU2N/NDEL (ANB10D) functions as a high-availability ESB Bus Node Unit designed for the CENTUM VP and ProSafe-RS control architectures. This 100% brand new, original unit serves as the physical and logical bridge between field I/O modules and the Field Control Unit (FCU). It facilitates the bidirectional transmission of analog and contact signals while distributing stable power to all installed I/O cards. By utilizing the Enhanced System Bus (ESB), the ANB10D maintains high-speed data synchronization and fault tolerance, making it an essential component for mission-critical industrial processes that demand zero downtime.

Part Number Breakdown

The ANB10D-421/CU2N/NDEL utilizes a specific configuration string to define its power and interface options:

Technical Specifications

The ANB10D provides a ruggedized mounting environment for up to eight I/O modules and two bus couplers.

Engineering Advantages

The Yokogawa ANB10D-421/CU2N/NDEL resolves the complexities of remote signal acquisition and system availability:

• Dual-Path Communication Fault Tolerance: The node unit accommodates two EC401 or EC402 bus coupler modules in redundant slots. If one communication path fails, the system instantly switches to the secondary path, preventing data loss between the field sensors and the central processor.

• Integrated Power Distribution: The ANB10D eliminates the need for external I/O power distributors. It draws power from the dual AC/DC inputs and regulates it for all eight internal I/O slots, ensuring each module receives a stable, noise-filtered voltage for accurate signal conversion.

• Universal FCU Integration: This node unit maintains full compatibility across multiple generations of Yokogawa Field Control Units (AFV10 through AFV40). This allows engineers to expand existing CENTUM VP systems or build new ProSafe-RS safety loops using a standardized hardware platform.

• High-Density Rack Efficiency: Despite its robust 10 kg construction, the ANB10D maximizes cabinet space by housing power, communication, and 8 channels of I/O in a single rack-mountable chassis. This reduces the total enclosure footprint and simplifies inter-rack cabling.

FAQs

• What is the difference between the ANB10D and the ANB10S?

  The "D" in ANB10D signifies "Duplexed" or Dual-Redundant support for both power and communication modules. The ANB10S is the "Single" version typically used for non-critical applications where redundancy is not required.

• Can I mix different types of I/O modules in the eight available slots?

  Yes. The ANB10D supports various Yokogawa FIO modules, including analog input/output and digital contact modules. The ESB bus interface manages the data addressing for each slot independently.

• Which bus coupler should I use for slots 7 and 8?

  You must install either EC401 or EC402 modules in slots 7 and 8 to enable communication with the Field Control Unit. For full redundancy, you must occupy both slots.

• How does the unit handle power supply failure?

  The "421" configuration includes two independent power supply units. If one AC source fails or an internal power module malfunctions, the secondary unit takes over the full load immediately without affecting the operation of the I/O modules.