ANB10D-427/CU2T | Yokogawa CENTUM VP ESB Bus Node Unit

Product Overview

The Yokogawa ANB10D-427/CU2T serves as a high-availability I/O expansion node for the CENTUM VP Distributed Control System (DCS). This unit facilitates the interface between the Field Control Station (FCS) and various FIO modules via a dual-redundant Extended Serial Backplane (ESB) bus. By providing a synchronized communication path and redundant power architecture, it ensures that field data remains accessible even during hardware or cable faults. We supply this unit as 100% Brand New and Original, meeting the strict reliability requirements of modern process industries.

Part Number Breakdown: ANB10D-427/CU2T

Yokogawa defines the technical configuration of this node unit through a specific alphanumeric suffix logic:

Technical Specifications

The ANB10D-427/CU2T integrates robust electrical and mechanical parameters to manage high-density I/O configurations:

• Bus Interface: Dual-redundant ESB Bus (Requires two ESB cables for full redundancy)

• Power Input: 220 V to 240 V AC, 50/60 Hz

• Redundancy: Supports dual-redundant power modules and dual-path bus communication

• Expansion Capacity: Accommodates Yokogawa FIO (Field Input/Output) modules

• Termination: Integrated /CU2T Connector Unit with internal electrical terminator

• Net Weight: 10 kg

• Mounting: 19-inch rack-mountable (Occupies 5U of rack space)

Engineering Advantages

The ANB10D-427/CU2T addresses critical plant floor challenges through superior hardware engineering:

• Eliminate Signal Reflections: The integrated /CU2T option provides a built-in terminator within the connector unit. This eliminates the need for external terminating resistors at the end of the ESB bus chain, ensuring high-speed signal integrity and preventing data corruption caused by electrical echoes.

• Hot-Swappable Power Redundancy: The -4 suffix indicates dual-redundant power supplies. This allows maintenance teams to replace a faulty power module while the unit remains live. The healthy module assumes the full load instantly, maintaining I/O visibility without interrupting the process.

• Enhanced Bus Reliability: By supporting a dual-redundant ESB bus, the unit maintains 100% communication even if one physical bus cable is severed or a connector fails. This dual-path architecture provides the deterministic data flow required for safety-critical control loops.

• Industrial-Grade Filtering: Engineered for 220-240V AC environments, the internal circuitry filters electromagnetic interference (EMI) and handles the voltage transients typical of heavy industrial grids, protecting sensitive FIO modules from electrical damage.

FAQs

• When should I use the /CU2T option instead of /CU2N?

  Use the /CU2T (Terminator) for the node located at the physical end of the ESB bus chain to ensure proper electrical termination. For nodes in the middle of a daisy chain, use the /CU2N (Non-terminator) version.

• Is the ANB10D-427 compatible with older CENTUM CS 3000 systems?

  Yes, this unit maintains backward compatibility with legacy CENTUM systems. However, its "7" revision code optimizes it for CENTUM VP R6.01 and later, providing improved thermal management and updated component longevity.

• What mounting hardware is required for the 10 kg chassis?

  The unit fits standard 19-inch racks. We recommend using the provided M5 screws and insulation bushes. The insulation bushes are critical to prevent ground loops between the chassis and the rack frame, which can interfere with analog signal accuracy.

• Does the unit include the FIO modules?

  No. The ANB10D-427/CU2T is the base node unit. You must order specific I/O modules (Analog, Digital, etc.) and the CP461/CP471 processor modules separately to complete your control station configuration.