ANB10D-425/CU2N Yokogawa ESB Bus Node Units

Suffix Breakdown & Model Matrix

Hardware Specifications

DCS Process Control Interface and Signal Communication

The ANB10D-425/CU2N manages ESB bus communication between Field Control Units and installed I/O modules. Moreover, the unit distributes internal power to connected I/O cards through its backplane structure. The dual-redundant power configuration maintains continuous module operation when one power source becomes unavailable.

For Yokogawa DCS architectures, this node unit supports distributed I/O expansion through ESB bus connectivity. In addition, the design supports channel communication between field interface modules and FCU processing units without requiring direct field wiring to the controller cabinet.

The unit operates within process control systems that use analog and digital I/O modules, including modules handling 4-20 mA HART loop protocol, FOUNDATION Fieldbus / Profibus PA connectivity, channel-to-channel isolation, and cold junction compensation (CJC) functions at the module level.

Frequently Asked Questions

Q: Does the ANB10D-425/CU2N support redundant power operation?
A: Yes. The unit includes a dual-redundant power supply configuration with two AC power input modules to maintain node operation during a single power module failure.

Q: How many I/O modules can the ANB10D-425/CU2N accommodate?
A: The node unit supports installation of up to 8 I/O modules within its rack-mounted structure.

Q: Is explosion protection included in this model configuration?
A: No. The suffix code “5” defines the basic version without explosion protection features.

Field Installation Guidelines

• Install the ANB10D-425/CU2N in a suitable 19-inch rack enclosure using the specified mechanical fixing points.
• Verify that the 220 – 240 V AC power supply wiring follows plant electrical installation standards before energizing the unit.
• Connect the ESB bus cable through the /CU2N connector unit and maintain proper cable routing separation from high-voltage power lines.
• Use appropriate grounding methods for rack frames and communication cable shields to reduce electromagnetic interference.
• Confirm that all installed I/O modules match the CENTUM VP or CENTUM CS 3000 R3 system configuration requirements before commissioning.
• Check power redundancy status after installation to verify correct operation of both power supply paths.