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Yokogawa ANB10D-425/CU2T ESB Bus Node Unit

Configured for I/O expansion and signal concentration in CENTUM VP and CENTUM CS 3000 systems, the Yokogawa ANB10D-425/CU2T (ANB10D ESB Bus Node Unit) provides direct physical connectivity for remote FIO modules via the ESB backplane.

Suffix Breakdown & Model Matrix

Code	Definition
ANB10D	Node Unit for Dual-Redundant ESB Bus
4	Dual-redundant power supply configuration
2	220 - 240 V AC power supply
5	Basic type with no explosion protection
/CU2T	Connector Unit with Terminator for ESB Bus

Hardware Specifications

Parameter	Specification
Model Brand	Yokogawa ANB10D-425/CU2T
Origin	Japan
Weight	10.0 kg
Dimensions	482.6 x 310 x 132.5 mm (W x D x H)
Operating Temp	0 to 50 degC
Humidity	5 to 90 % RH (Non-condensing)
Power Consumption	130 VA max
Input Voltage	220 to 240 V AC (180 to 264 V AC range)
I/O Slots	8 slots
Bus Interface	ESB Bus

Process I/O Signal Integrity & Backplane Isolation

The ANB10D-425/CU2T maintains channel-to-channel isolation across the ESB backplane to suppress common-mode voltage interference from field sensors. The unit supports 4-20 mA analog input/output loops and integrates with FOUNDATION Fieldbus H1 segments via compatible FIO modules. Cold junction compensation (CJC) is managed by the resident I/O cards, ensuring accurate thermocouple measurement without requiring external reference junctions. The ESB bus architecture guarantees deterministic data transfer between the node and the Field Control Station (FCS).

Frequently Asked Questions

Q: What is the maximum cable length for the ESB bus connection?

A: The ESB bus supports a maximum point-to-point distance of 10 meters using the standard YCB301 cable assembly.

Q: Is hot-swapping supported for I/O modules installed in this node?

A: Yes, the ANB10D platform supports hot-swapping of I/O modules, permitting online replacement without process interruption, provided the system firmware version supports this feature.

Q: What grounding resistance is required for proper operation?

A: The functional grounding terminal must be connected to a ground stake with a resistance of less than 100 Ohms (Class D grounding specification).

Field Installation Guidelines

Mount the unit in a 19-inch rack using the supplied /CU2T brackets. Ensure the rear panel connectors are mated correctly with the ESB terminator block. Power wiring must utilize conductors sized for the 130 VA load, with ferrules applied to the M4 power terminals. Maintain a minimum clearance of 50 mm above and below the unit for passive airflow. Connect the FG (Functional Ground) terminal to the cabinet ground bus using a dedicated green/yellow conductor. Do not mix signal ground and safety ground within the same terminal block.

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