ANB10D-420/CU2N/NDEL Yokogawa ESB Bus Node Unit

Hardware Specifications

Process Control Communication and Signal Interface Features

The Yokogawa ANB10D-420/CU2N/NDEL provides an ESB Bus interface for transmitting analog I/O signals, contact I/O signals, and control data between field devices and the Field Control Unit. Moreover, the unit supports dual-redundant power supply architecture to maintain node operation during a single power source fault.

The module integrates with Yokogawa DCS platforms through the ESB Bus communication structure. Therefore, it maintains stable data exchange between distributed I/O components and the control layer.

For process instrumentation applications, the node unit supports connection architectures associated with 4-20 mA HART loop protocol, FOUNDATION Fieldbus / Profibus PA connectivity, channel-to-channel isolation, and cold junction compensation (CJC) functions when used with compatible Yokogawa I/O modules. These functions depend on the installed I/O module configuration rather than the ANB10D node hardware itself.

The ANB10D series provides a physical interface between field signal processing modules and the control network. In addition, the /NDEL option enables node expansion capability within the supported system configuration.

Frequently Asked Questions

Q: Does the ANB10D-420/CU2N/NDEL support redundant power operation?
A: Yes. The unit uses a dual-redundant power supply configuration and supports 100 – 120 V AC and 24 V DC power input according to the specified configuration.

Q: What mounting method does the ANB10D-420/CU2N/NDEL require?
A: The unit is designed for 19-inch rack mounting and uses M5 x 4 screws with an insulation bushing accessory.

Q: What is the function of the /CU2N and /NDEL options?
A: The /CU2N option provides the ESB Bus connector unit, while the /NDEL option enables Node Expansion software functionality.

Field Installation Guidelines

Install the ANB10D-420/CU2N/NDEL in a compatible 19-inch rack structure and secure the module using the specified mounting hardware. Verify that the rack provides proper mechanical support before connecting field wiring.

Connect power wiring according to the configured supply voltage requirements. Furthermore, separate power cables from signal communication cables to reduce electrical interference during operation.

Use appropriate grounding practices for rack installation and maintain proper shield termination for connected communication wiring. Confirm ESB Bus cable routing before commissioning to prevent excessive cable stress or unintended signal coupling.

Before system startup, check the connector unit installation, power supply status, and communication link condition through the Yokogawa system engineering tools.