Description

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

Configured for deterministic data exchange in CENTUM VP distributed control networks, the Yokogawa ANB10D-420/CU2N/NDEL (ANB10D ESB Bus Node Unit) provides direct physical backplane connectivity for field I/O modules via dual-redundant Enhanced System Bus architecture.

Suffix Breakdown & Model Matrix

Code Segment	Code	Definition
Model	ANB10D	Node Unit for Dual-Redundant ESB Bus
Power Config	-4	Dual-redundant power supply
Voltage	2	220 - 240 V AC power supply
Type	0	Basic type with no explosion protection
Option 1	/CU2N	Connector Unit for ESB Bus
Option 2	/NDEL	Software License for Node Expansion

Hardware Specifications

Parameter	Specification
Brand	Yokogawa
Origin	Japan
Weight	10 kg
Dimensions	19-inch rack mount standard
Operating Temp	0 to 50 degC
Power Consumption	200 VA / 5.5 A
Input Voltage	220 - 240 V AC
Bus Interface	Dual ESB Bus (Copper)

Channel-to-Channel Isolation and Backplane Integrity

The unit utilizes channel-to-channel isolation to prevent ground loop formation between connected field devices and the main controller. The ESB bus protocol supports deterministic communication cycles essential for process control loops. The /NDEL option enables the software mapping required for expanding I/O capacity beyond the default node limit. Cold junction compensation is managed by the connected analog input modules interfacing with this node unit.

Frequently Asked Questions

Q: Does the ANB10D support hot-swapping of I/O modules?

A: Yes, the backplane supports hot-swapping of FIO modules without interrupting power to adjacent modules, provided the system software is configured for online maintenance.

Q: What is the function of the /CU2N option?

A: The /CU2N code indicates the inclusion of the ESB Bus connector unit, which houses the termination blocks and coaxial cable interfaces required for linking to the Field Control Unit (FCU).

Q: Can this unit operate with a single power supply if redundancy is not required?

A: While physically possible to run on one supply, the internal logic defaults to redundant operation. Removing one power module triggers a diagnostic alert on the CENTUM VP status monitor.

Field Installation Guidelines

Mount the unit into a standard 19-inch rack using M5 screws. Ensure proper torque application to maintain panel grounding continuity. Use the supplied insulation bushings when mounting to prevent galvanic contact with the enclosure frame. Route ESB bus cables separately from high-voltage power lines to minimize electromagnetic interference. Terminate all cable shields at the connector unit to maintain signal integrity.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems