Description

Yokogawa ANB10D-410/CU2T ESB Bus Node Units

The Yokogawa ANB10D-410/CU2T, also cataloged as the ANB10D Node Unit, operates as a dedicated hardware component for dual-redundant ESB bus interfacing within CENTUM VP / CENTUM CS 3000 Distributed Control Systems. It provides direct physical and electrical connectivity between Field Control Stations (FCS) or Safety Control Stations (SCS) and the ESB bus network.

HardwareSpecifications

Parameter	Specification
ModelBrand	Yokogawa ANB10D-410/CU2T
Origin	Japan
Weight	7–8 kg (fully loaded with dual power supplies, excluding I/O modules)
Dimensions	482.6 × 132.5 × 320 mm (Width × Height × Depth)
OperatingTemp	0 to 50 degC
PowerConsumption	Max. 200 VA (depending on installed I/O modules)
Number of I/O Slots	8 (plus 2 reserved ESB interface slots)
Power Supply	Dual-redundant PW482 modules, 220–240 V AC, 50/60 Hz
Withstanding Voltage	1500 V AC between power terminals and ground
Insulation Resistance	≥ 20 MΩ at 500 V DC
Mounting	19-inch rack (ANSI/EIA-310-D compliant)
Connector	CU2T unit with built-in ESB terminating resistors

Process Control Connectivity Features

• Supports 4-20 mA HART loop protocol for analog modules.
• Provides channel-to-channel isolation to prevent cross-interference in data signals.
• Supports cold junction compensation (CJC) for thermocouple inputs, ensuring accurate temperature measurement under varying ambient conditions.
• Compatible with FOUNDATION Fieldbus and PROFIBUS PA networks when paired with respective interface modules.

Frequently Asked Questions

Q: Can the power supply modules be replaced without shutting down the Node Unit?
A: Yes. The dual-redundant power supplies are hot-swappable, allowing maintenance or replacement while the system remains operational.

Q: Are the ESB interface slots pre-terminated or do they require external resistors?
A: The CU2T connector unit includes built-in terminating resistors, eliminating the need for external ESB line termination.

Q: What is the maximum allowable ambient temperature for safe operation?
A: The unit is rated for operation up to 50 degC. Exceeding this may affect module performance or longevity.

Field Installation Guidelines

• Mount the Node Unit in a standard 19-inch rack with sufficient airflow for heat dissipation.
• Ensure proper grounding of the chassis to minimize electrical noise and maintain channel-to-channel isolation.
• Route ESB bus cables according to separation guidelines from high-power lines to prevent EMI.
• Verify polarity and voltage of AC power before connecting dual-redundant power modules.
• Confirm termination of ESB lines using CU2T built-in resistors; do not add external terminators.
• Avoid stacking heavy modules above the Node Unit to prevent mechanical stress on the rack.

Specifications

• Brand: Yokogawa

Advantages

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