Yokogawa ANB10D-125/CU2N Dual-Redundant ESB Bus Node Unit

Hardware Specifications

DCS Instrument Signal Integration and ESB Bus Communication

The ANB10D-125/CU2N manages communication between distributed I/O modules and Yokogawa FCU controllers through the ESB Bus interface. Moreover, the dual communication path design supports continuous data exchange when one ESB communication path experiences a fault condition.

The unit supplies power distribution and module management functions for installed field I/O assemblies. Therefore, it supports Yokogawa FIO architecture by combining ESB Bus connectivity, power supply modules, and I/O signal processing modules in a single node assembly.

For Yokogawa process control systems, the node structure supports analog and contact signal modules. In addition, the architecture allows integration with field devices using standard DCS I/O configurations, including analog input, analog output, contact input, and contact output modules.

The ANB10D-125/CU2N also operates within Yokogawa instrument networks that use 4-20 mA signal processing, HART-compatible field instrumentation, and distributed I/O communication structures. Channel isolation and signal conditioning depend on the installed I/O module type.

Frequently Asked Questions

Q: What communication interface does the ANB10D-125/CU2N use for FCU connection?
A: The ANB10D-125/CU2N uses the Yokogawa ESB Bus interface to connect distributed I/O nodes with compatible FCU systems.

Q: How does the dual-redundant configuration operate in this node unit?
A: The unit provides two ESB Bus communication paths and supports dual-redundant power supply arrangements for continuous node operation under single-path fault conditions.

Q: How many I/O modules can be installed in the ANB10D-125/CU2N?
A: The node unit supports installation of up to 8 compatible Yokogawa I/O modules within the node assembly.

Field Installation Guidelines

Install the ANB10D-125/CU2N inside a compatible Yokogawa control cabinet with correct mechanical fixing and grounding connections. Verify that the FCU includes the required ESB Bus Coupler Module before connecting the node unit.

Use the specified power supply modules and S9562FA connector units according to the Yokogawa installation documentation. Route ESB Bus cables separately from high-voltage power cables to reduce electrical interference.

Connect cable shields according to site grounding practices and maintain proper separation between field signal wiring and power distribution wiring. When installing I/O modules with additional insulation requirements, install the required partition components to maintain electrical spacing.