Yokogawa ANB10D-425-CU2T S2 CENTUM VP Base ESB Bus Node Unit

Configured for high-availability signal interfacing in CENTUM VP systems, the Yokogawa ANB10D-425-CU2T S2 (ANB10D-425-CU2T S2 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

• FOUNDATION Fieldbus / Profibus PA Connectivity: The node unit serves as a high-speed backbone interface, maintaining deterministic data throughput for fieldbus segments integrated into the CENTUM VP control hierarchy.
• Channel-to-Channel Isolation: The backplane is engineered with high-density isolation to prevent signal coupling between discrete contact inputs and sensitive analog loops, ensuring process variable accuracy.
• Cold Junction Compensation (CJC): The unit supports I/O module sets that utilize CJC logic. The internal mechanical design ensures the temperature stability required for accurate cold junction reference measurements in thermocouple-based temperature monitoring applications.

Frequently Asked Questions (FAQ)

Q: Can the power supply input be changed after installation?

A: No. The power supply configuration is hardware-specific to the model suffix. Ensure the supply voltage matches the unit's rated 220–240 VAC before installation.

Q: Does the dual-redundant power supply architecture allow for load sharing?

A: Yes. The dual-redundant power modules are designed for active-active operation, providing continuous power distribution to the backplane even if one power unit is removed or fails.

Field Installation Guidelines

• Mechanical Mounting: Mount the 10 kg unit into a standard 19-inch cabinet rack. Use the appropriate M5 hardware and ensure the chassis is firmly secured to the rack frame to prevent vibration-induced signal noise.
• Grounding: Connect the frame ground terminal to a low-impedance plant earth ground. This is critical for the module's electromagnetic compatibility (EMC) and to prevent circulating currents on the ESB bus.
• Power Connectivity: Connect the dual power supply inputs to independent electrical circuits. Verify the source voltage is within the 220–240 VAC range to protect internal circuitry.
• Bus Cabling: Terminate ESB bus cables using the provided CU2T connector unit. Ensure cables are strain-relieved and routed through dedicated signal ducts, separated from high-voltage AC lines.
• Validation: Upon power-up, check the front panel indicators to verify power supply status and bus synchronization with the FCU. Perform a loop check to confirm I/O status consistency.