Product Overview

The ANB10D-420/CU2N/NDEL functions as a high-reliability expansion node for Yokogawa’s proprietary ESB (Extended Serial Backplane) bus system. This unit is specifically engineered to provide a robust physical and electrical interface for I/O modules, facilitating seamless communication between field instruments and the central control station. Designed for mission-critical Distributed Control System (DCS) architectures, this node unit supports dual-redundant power configurations to prevent system-wide outages in the event of a single power supply failure. It serves as a direct successor and replacement for the ANB10D/CU2N series, offering refined electrical stability and enhanced support for node expansion through integrated software licensing.

Hardware Parameters and Mechanical Specifications

The following technical profile details the physical and electrical constraints of the ANB10D architecture:

• Bus Support: Dual-Resistant ESB Bus interface for high-availability networking.

• Power Supply Configuration: Dual-redundant modules supporting 220 - 240 V AC input.

• Energy Consumption: 200 VA (AC) / 5.5 A (DC) typical draw.

• Physical Weight: 10 kg (unpacked).

• Chassis Dimensions: Standard 19-inch rack mounting width; approximately 132.5 mm height (3U).

• Installation Interface: Rack mount (M5 x 4 screws) featuring insulation bushings for electrical isolation.

• Connector Type: /CU2N ESB Bus connector unit pre-installed.

• Expansion Capacity: Included /NDEL software license for immediate node expansion capabilities.

• Environmental Protection: Basic type (non-explosion proof) intended for controlled industrial environments.

• Packing Size: 482 mm Width x 132 mm Height x 300 mm Depth

Industrial Utilization and Deployment

Distributed Control System Expansion

The primary application of the ANB10D-420 is the expansion of I/O capacity within a Yokogawa CENTUM VP or CS 3000 environment. By linking this node to the ESB bus, plant engineers can distribute I/O modules across multiple racks while maintaining the low-latency communication required for real-time process loops.

Fault-Tolerant Power Infrastructure

In sectors such as petrochemical refining and power generation, power failure is not an option. The dual-redundant power suffix on this unit allows for two independent power feeds, ensuring that even if one circuit breakers trips, the field data flow remains uninterrupted.

High-Speed Data Acquisition

The /CU2N connector interface provides the high-fidelity signal path necessary for high-speed data acquisition. This is critical in applications like turbine monitoring or fast-cycle batch processing, where signal integrity directly impacts safety and product quality.

Remote I/O Interfacing

Thanks to the rack-mountable design and insulation protection, this unit is frequently deployed in localized control rooms or satellite instrument houses. It allows for the centralization of process data from remote plant areas back to the main control logic solver via the ESB bus.

FAQ

Q: Can the ANB10D-420/CU2N/NDEL be used as a direct replacement for older ANB10D/CU2N units?

A: Yes, this model is designed as a functional replacement for the standard ANB10D/CU2N, offering improved reliability and the inclusion of the NDEL expansion license for modern system configurations.

Q: What is the benefit of the /NDEL suffix in this specific package?

A: The /NDEL code signifies that the unit includes the Software License for Node Expansion. This allows the DCS to recognize and integrate the new node into the existing network without requiring separate software procurement.

Q: Is this unit suitable for use in hazardous areas where explosion protection is required?

A: No, the suffix "0" in the model code indicates that this is a basic type with no explosion protection. It should only be installed in safe areas or within purged and pressurized enclosures.

Q: What type of mounting hardware is required for installation?

A: The unit is designed for standard 19-inch rack mounting. It requires four M5 screws and the included insulation bushings to ensure the unit is properly isolated from the rack frame to prevent ground loops.

Q: How does the dual-redundant power supply handle a failure?

A: The unit utilizes an internal load-sharing mechanism. If one power module fails, the second module immediately assumes the full load without any dip in voltage or interruption to the ESB bus communication.