Product Overview

The Yokogawa ANB10D-425/CU2T/NDEL is a high-availability node unit specifically designed for the CENTUM VP and CS 3000 Distributed Control Systems (DCS). This hardware serves as a critical junction within the Extended Serial Backplane (ESB) bus architecture, allowing for the seamless expansion of I/O modules across the control network. Engineered for maximum reliability, this specific model features a dual-redundant power supply configuration to ensure the system remains operational even in the event of a single power source failure. The inclusion of the /CU2T terminator and the /NDEL software license allows for high-speed, long-distance communication with zero signal reflection, making it a cornerstone for large-scale industrial automation plants that require uncompromising data integrity.

Engineering Specifications and Hardware Layout

The ANB10D-425/CU2T/NDEL is built to industrial standards to support mission-critical infrastructure. The technical parameters include:

• Bus Configuration: Node Unit for Dual-Redundant ESB Bus

• Power Redundancy: Integrated Dual-Redundant Power Supplies

• Voltage Requirement: 220 V to 240 V AC (50/60 Hz)

• Expansion Options: /NDEL Software License included for node expansion capabilities

• Interface Hardware: /CU2T Connector Units with built-in terminators (Part No. S9564FA)

• Safety Rating: Basic type designed for non-explosion hazardous areas

• Approximate Weight: 6.0 kg

• Standard Dimensions: 48.3 cm x 13.2 cm x 25.0 cm (Standard 19-inch rack mounting)

• Mounting: Backplane or Rack Mount compatible

Operational Use Cases and Industrial Environments

Refinery and Petrochemical Control

In large-scale processing facilities, the ANB10D facilitates the connection between the main Field Control Station (FCS) and remote I/O racks. Its dual-redundancy is vital for maintaining continuous monitoring of temperature and pressure loops where a communication blackout could lead to costly safety shutdowns.

Power Generation and Grid Management

Utilized within thermal and hydroelectric power plants, this ESB Bus Node manages high-density data traffic from turbine sensors. The built-in /CU2T terminators ensure that high-frequency signals are transmitted over the bus without interference, providing the clean data needed for millisecond-perfect governor control.

Water and Wastewater Treatment

For geographically dispersed infrastructure, the /NDEL license allows engineers to expand the number of nodes in the system easily. This makes it an ideal solution for water treatment facilities that need to add more filtration or pumping I/O modules as the plant capacity grows over time.

Pharmaceutical Manufacturing

In environments where batch integrity is paramount, the ANB10D-425 provides a stable communication backbone. The redundant AC power supply ensures that the automation sequence is never interrupted by electrical surges or local power faults, protecting expensive chemical batches from spoilage.

FAQ

Q: What is the primary function of the /CU2T option code on this node?

A: The /CU2T designates that the unit comes equipped with Connector Units that include built-in Terminators. These are essential for the physical ends of an ESB bus segment to prevent signal reflections that could cause data corruption.

Q: Can this unit be used in systems running on 110V AC?

A: No, the "2" in the suffix code (425) specifies that this unit is hardware-coded for 220 - 240 V AC. For 110V systems, a different suffix code (e.g., -415) would be required.

Q: Is the /NDEL software license a physical component?

A: The /NDEL represents a software license entitlement for Node Expansion. While it is associated with the hardware order, it grants the system the logical permission to recognize and communicate with additional nodes within the CENTUM VP environment.

Q: How does the dual-redundancy in the power supply work?

A: The unit contains two independent power modules. If one fails or loses its input source, the other immediately carries the full electrical load without any interruption to the ESB bus communication or the attached I/O modules.

Q: What is the maximum number of I/O modules this node can support?

A: Typically, an ANB10D node unit can house up to 8 I/O modules. However, the total system capacity depends on the specific Field Control Station (FCS) model you are using in your Yokogawa DCS setup.