ANB10D-425 Yokogawa Bus Node Unit

Configured for field I/O expansion in CENTUM VP control platforms, the Yokogawa ANB10D-425/CU2T (ANB10D-425 ESB Bus Node Unit) provides direct physical/electrical execution of high-speed bus communication and field device integration.

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control and DCS Characteristics

• 4-20 mA HART loop protocol: The unit maintains signal path integrity for HART-enabled instrumentation, ensuring that device diagnostic data is processed and relayed to the DCS asset management host without attenuation.
• FOUNDATION Fieldbus / Profibus PA connectivity: The ESB bus architecture supports the deterministic exchange of digital fieldbus data, allowing for seamless integration of smart instrumentation into the process control network.
• Channel-to-channel isolation: Internal circuitry provides galvanic isolation between the ESB bus interface and field-connected I/O modules, protecting the control network from transients and common-mode noise.
• Cold junction compensation (CJC): The unit utilizes precision thermal sensing on the terminal boards to execute accurate CJC calculations for thermocouple signals, maintaining measurement precision across the node.

Frequently Asked Questions

Q: Is this unit a drop-in replacement for the legacy ANB10D-125/CU2T model?

A: Yes. The ANB10D-425/CU2T is engineered as a direct replacement for the ANB10D-125/CU2T unit, maintaining full functional and physical compatibility within the existing control system architecture.

Q: Are the ESB bus terminators included with the /CU2T option?

A: Yes. The /CU2T option includes the required S9564FA (2 pieces) ESB bus terminators, which must be installed at the extremities of the ESB bus segment to prevent signal reflections.

Field Installation Guidelines

• Mounting: Secure the node unit into a standard 19-inch equipment rack. Ensure all mounting fasteners are torqued to manufacturer specifications to maintain structural integrity and minimize vibration.
• Grounding: Bond the node chassis to the cabinet protective earth (PE) bus using a dedicated low-impedance ground cable. A solid ground reference is mandatory for high-speed ESB bus electromagnetic compatibility.
• Wiring: Connect the 220 - 240 V AC power supply to the redundant input terminals, ensuring correct phasing. Separate ESB bus communication cables from high-voltage AC lines to prevent induced interference and maintain data integrity.