Yokogawa ANB10D-421/CU2N/NDEL Centum VP Node Units

Configured for distributed I/O management in DCS architectures, the Yokogawa ANB10D-421/CU2N/NDEL (ANB10D Node Unit) provides direct physical/electrical execution of dual-redundant ESB bus communication and power distribution for I/O modules.

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control and DCS Instrumentation Characteristics

• 4-20 mA HART loop protocol: The unit supports transparent communication for HART-enabled field devices, allowing for remote diagnostic data collection and parameter configuration directly through the DCS environment.
• FOUNDATION Fieldbus / Profibus PA connectivity: The architecture allows for modular integration of digital fieldbus networks, ensuring compatibility with standardized process automation protocols.
• Channel-to-channel isolation: Each I/O channel path is isolated to prevent common-mode noise propagation and ground loop currents between field devices and the DCS backplane.
• Cold junction compensation (CJC): Internal high-precision sensing circuits provide active CJC for thermocouple inputs, ensuring accurate temperature measurement across varying ambient conditions.

Frequently Asked Questions

Q: Does the ANB10D-421/CU2N/NDEL support hot-swapping of I/O modules?

A: Yes. The node unit is designed to support the hot-swapping of connected I/O modules without interrupting the primary ESB bus communication or power delivery to other functional modules.

Q: What is the purpose of the /NDEL software license?

A: The /NDEL option provides the necessary software authorization for node expansion. This is mandatory for systems configured to scale beyond the initial node capacity within the DCS logic architecture.

Field Installation Guidelines

• Mounting: Install the node unit in a cabinet with adequate ventilation. Adherence to the specified -20 deg C to +60 deg C operating temperature range is mandatory to prevent thermal degradation of the internal power regulation components.
• Grounding: Bond the module chassis to the cabinet’s dedicated instrument earth bus using a low-impedance conductor. Proper shielding of the ESB bus cables is mandatory to mitigate EMI and ensure stable data transmission.
• Wiring: Terminate 24 V DC power inputs using appropriately rated cabling to handle current demand. Ensure digital and analog signal wires are segregated from high-power conduits to maintain signal integrity and prevent induced noise.