Yokogawa ANB10D-420/CU2N Bus Node Unit

Configured for field I/O expansion in CENTUM VP control platforms, the Yokogawa ANB10D-420/CU2N (ANB10D-420 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: Does the unit support redundant AC power inputs?

A: Yes. The suffix code "4" indicates a dual-redundant power supply configuration, allowing for continuous operation upon the loss of a single power feed.

Q: Is the /CU2N connector unit sufficient for all ESB bus configurations?

A: The /CU2N option provides the standard ESB bus connectivity. Ensure that bus terminators are installed as per the specific network topology requirements to prevent signal reflections.

Field Installation Guidelines

• Mounting: Secure the node unit into a standard 19-inch equipment rack using the four M5 screws provided. Ensure the insulation base is installed according to the accessory guidelines to maintain required dielectric clearances.
• 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 power supply to the redundant input terminals, ensuring proper phasing. Separate ESB bus communication cables from high-voltage AC lines to prevent induced interference and maintain data integrity.