Description

Yokogawa ANB10D-426/CU2N/NDEL ESB Bus Node Unit

The Yokogawa ANB10D-426/CU2N/NDEL, also cataloged as the ANB10D ESB Bus Node Unit, operates as a dedicated hardware component for distributed I/O aggregation and ESB backplane communication within CENTUM VP control platforms.

Suffix Breakdown & Model Matrix

Code Segment	Definition
ANB10D	ESB Bus Node Unit with dual-redundant communication
-4	100–120 V AC power input
2	Dual-redundant power supply and network interface
6	Standard design code
/CU2N	ISA G3 conformal coating, no explosion protection
/NDEL	No digital edge label

Hardware Specifications

Parameter	Specification
Brand	Yokogawa
Origin	Japan
Weight	6.0 kg (without I/O modules)
Dimensions	19-inch rack mount
Operating Temp	0 to 50 degC
Power Consumption	Max 200 VA
Power Supply Voltage	85–132 V AC, 50/60 Hz ±3 Hz
I/O Capacity	8 module slots
Communication	Dual ESB bus interfaces

Foundation Fieldbus Connectivity

This unit supports deterministic ESB bus communication for high-speed cyclic data exchange between field I/O modules and FIO processors. Channel-to-channel isolation minimizes noise coupling across analog input loops. Backplane signal integrity is maintained through impedance-matched transmission lines, ensuring stable 4–20 mA HART protocol operation without data collision in multi-drop configurations.

Frequently Asked Questions

Q: Can I/O modules be replaced without powering down the node?

A: Yes. The ANB10D supports hot-swapping of I/O modules while maintaining redundant power and communication paths.

Q: What happens if one power supply module fails?

A: The second power supply assumes full load instantaneously, preventing process interruption.

Q: Is conformal coating mandatory for chemical plant installations?

A: For environments with corrosive gases such as H₂S, SO₂, or Cl₂, ISA G3-coated units are required to meet equipment longevity standards.

Field Installation Guidelines

Install the node unit in a grounded 19-inch rack using secure mounting brackets. Use separate conduits for power and signal wiring to reduce electromagnetic interference. Terminate shield drains at the rack ground bar only, maintaining continuous shield coverage to the connector entry. Verify all screw terminal torques to manufacturer-specified values before energizing the system.

Specifications

• Brand: Yokogawa

Advantages

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