Description

Yokogawa ANB10D-425/CU2N ESB Bus Node Unit

The Yokogawa ANB10D-425/CU2N, also cataloged as the ANB10D Node Unit for Dual-Redundant ESB Bus, operates as a dedicated hardware component for deterministic I/O expansion and process data communication within CENTUM VP and CENTUM CS 3000 platforms.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa ANB10D-425/CU2N
Origin	Japan
Weight	10 kg
Dimensions	19-inch rack, 5U height
OperatingTemp	0 to 60 degC
PowerConsumption	Maximum 230 VA / 120 W
IOModuleCapacity	Up to 8 single-slot FIO modules
InterfaceBus	Copper ESB via /CU2N connector
Redundancy	Dual-redundant power supply (PW482), dual-redundant SB401 ESB Interface
InputVoltage	198–264 V AC
RatedVoltage	220–240 V AC
Frequency	50/60 Hz (47–63 Hz acceptable)

Process Control Integration Features

The node supports channel-to-channel isolation to prevent signal interference between I/O modules. It also incorporates cold junction compensation (CJC) for temperature-sensitive inputs, ensuring accurate analog readings over varying environmental conditions. Communication over the ESB bus is deterministic, providing synchronized and timed execution of I/O events.

Frequently Asked Questions

Q: Does the ANB10D-425/CU2N support hot-swap of I/O modules?
A: Only non-redundant FIO modules can be replaced while the system is powered; dual-redundant modules require system power down for safe insertion/removal.

Q: What is the maximum distance supported for copper ESB bus connections?
A: Standard copper ESB wiring supports up to 100 meters between the node and the FCU under typical signal conditions.

Q: Can the node handle voltage fluctuations beyond the specified input range?
A: Operation outside 198–264 V AC is not recommended; sustained overvoltage or undervoltage can trigger power supply fault indications.

Field Installation Guidelines

• Mount in a standard 19-inch rack using M5 screws with insulation bushes to prevent ground loops.
• Maintain minimum 50 mm clearance around ventilation openings to ensure adequate airflow.
• Connect dual-redundant power inputs to separate branches to preserve redundancy.
• Ensure ESB bus cables are shielded and grounded at a single point to avoid noise induction.
• Avoid routing high-current power cables parallel to ESB communication lines to reduce crosstalk.
• When installing near temperature-sensitive modules, verify cold junction compensation paths are unobstructed.

Specifications

• Brand: Yokogawa

Advantages

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