Yokogawa ANB10D-425-CU2N ESB Bus Node Unit

Configured for high-availability signal interfacing in CENTUM VP distributed control systems, the Yokogawa ANB10D-425-CU2N (ANB10D-425-CU2N Node Unit) provides direct physical/electrical execution of ESB bus communication between field I/O and the Field Control Unit (FCU).

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control and DCS Connectivity

• 4-20 mA HART Loop Protocol: The unit maintains transparency for HART-enabled instrumentation, facilitating the transmission of process variables and secondary diagnostic data from connected field devices to the host controller within the CENTUM VP architecture.
• FOUNDATION Fieldbus / Profibus PA Connectivity: The architecture facilitates high-speed, deterministic data throughput, allowing the seamless integration of Fieldbus and Profibus PA segments through the internal backplane without introducing communication jitter.
• Channel-to-Channel Isolation: High-density isolation circuitry on the backplane prevents potential signal coupling or cross-talk between discrete and analog channels, ensuring the integrity of field signals during transit to the FCU.
• Cold Junction Compensation (CJC): The node supports I/O modules utilizing CJC, with a mechanical design that ensures the required thermal stability for accurate cold junction reference measurements in thermocouple-based temperature monitoring applications.

Frequently Asked Questions (FAQ)

Q: Are the dual power supply modules hot-swappable?

A: Yes. The unit supports active-active power redundancy, allowing for the replacement of a single power supply module during system operation without disrupting I/O communication.

Q: Is this model suitable for explosive atmospheres?

A: No. The suffix code 5 indicates a basic type design without explosion-proof certification; ensure the installation environment is non-hazardous.

Field Installation Guidelines

• Mechanical Mounting: Install the unit into a 19-inch cabinet rack using standard M5 fasteners. Ensure the chassis is bonded to the cabinet earth ground to prevent EMI/RFI-induced signal degradation.
• ESB Bus Cabling: Use the -CU2N connector for ESB bus input and output. Ensure that all cables are routed through segregated signal ducts to prevent inductive noise pickup from high-voltage power wiring.
• Power Connectivity: Connect the dual power inputs to independent 220–240 VAC circuits. This redundancy ensures that a single circuit breaker or power source failure does not result in a loss of the node's I/O data.
• Grounding: Connect the frame ground terminal to a low-impedance plant ground bus. Proper grounding is critical for maintaining the specified deterministic timing performance of the ESB bus.
• Validation: Confirm link synchronization between the node and the FCU via the CENTUM VP system management terminal. Perform a visual inspection of the node status LEDs to ensure both power channels are active.