Yokogawa ANB10D-425/CU2N Bus Node Unit

Configured for distributed I/O management in Fieldbus Control System (FCS) architectures, the Yokogawa ANB10D-425/CU2N (ANB10D Node Unit) provides direct physical/electrical execution of dual-redundant ESB bus communication and power distribution for modular FIO systems.

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-425/CU2N 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: Is this model compatible with node expansion licensing?

A: The ANB10D-425 series supports node expansion; however, verify if the specific DCS license key for your system architecture is active to enable scalability beyond the base node configuration.

Field Installation Guidelines

• Mounting: Install the node unit in a cabinet with adequate ventilation. Adherence to the specified ambient 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 220 - 240 V AC power inputs using appropriately rated cabling. Ensure digital and analog signal wires are segregated from high-power conduits to maintain signal integrity and prevent induced noise.