Description

Yokogawa ANB10D-410/CU2N ESB Bus Node Units

The Yokogawa ANB10D-410/CU2N, also cataloged as the ANB10D Node Unit, operates as a dedicated hardware component for transmitting analog and digital I/O signals while supplying power to installed modules within CENTUM VP and CENTUM CS 3000 DCS platforms. Configured for dual-redundant ESB bus operation, this unit provides direct electrical execution across field I/O modules.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa ANB10D-410/CU2N
Origin	Japan
Weight	Approx. 10 kg (fully loaded)
Dimensions	482.6 × 132.5 × 320 mm (W × H × D)
OperatingTemp	0 to 50 degC
PowerConsumption	Max. 200 VA / 120 W
I/O Module Slots	8 slots for analog, digital, or communication modules
Interface Slots	2 slots for ESB Bus Interface Slave Modules
Power Supply Modules	Dual-redundant PW481, 100–120 V AC
Insulation Resistance	≥ 20 MOhm at 500 V DC
Withstanding Voltage	1500 V AC between power terminals and grounding
Mounting Type	19-inch rack, M5 screws with insulation bushes

Process Control & DCS Connectivity

The ANB10D-410/CU2N incorporates channel-to-channel isolation to prevent signal interference between analog and digital lines. It supports 4-20 mA HART loop protocol for analog modules, ensuring signal fidelity over long bus distances. Cold-junction compensation (CJC) is included for precise temperature-sensing module integration. The CU2N connector design omits a built-in terminator, allowing midline installation on the ESB bus while maintaining deterministic signal timing.

Frequently Asked Questions

Q: Does the ANB10D-410/CU2N support hot-swappable I/O modules?
A: Only certain FIO modules are hot-swappable; interface and power modules require shutdown for replacement.

Q: What is the expected switching delay when a redundant power supply fails?
A: Redundant power switching occurs within milliseconds, ensuring minimal interruption to field I/O communication.

Q: Can firmware updates be applied without removing the unit from the rack?
A: Firmware flash is supported via the ESB interface but requires all connected modules to be in a safe state during upgrade.

Field Installation Guidelines

• Mount the unit securely on a 19-inch rack using M5 screws and insulation bushes.
• Maintain proper grounding for all ESB bus shields to reduce EMI interference.
• Avoid routing high-voltage AC lines adjacent to analog I/O cabling to preserve signal integrity.
• Observe proper spacing between units to allow airflow and prevent thermal accumulation.
• Confirm CU2N units are not installed at the physical end of the ESB bus; terminate only with /CU2T units.

Specifications

• Brand: Yokogawa

Advantages

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