Duplicated Node Interface Unit Yokogawa ANB10D-223/S2

Suffix Breakdown & Model Matrix

Yokogawa utilizes a structured suffix code to define the power requirements and mounting style of the ANB10D series:

Hardware Specifications

ESB Bus Signal Integrity and 4-20 mA Loop Integration

The ANB10D-223/S2 provides a stable electrical environment for high-density I/O modules within the CENTUM VP architecture. The “/S2” hardware revision specifically addresses ESB bus signal stability through enhanced impedance matching and improved resistance to long-term component aging. The unit supports standard 4-20 mA analog current loops and HART protocol communication across connected FIO modules, with channel-to-channel isolation maintained through the backplane bus architecture. The dual-redundant ESB bus connections ensure deterministic data transmission between field sensors and the central Field Control Unit (FCU) without introducing protocol conversion latencies.

Frequently Asked Questions

Q: Can individual FIO modules be hot-swapped while the ANB10D-223/S2 is online?

A: Yes. The unit supports online replacement of I/O modules and power supply units during runtime. However, the specific hot-swap behavior depends on the FIO module type inserted in each slot. Analog input modules with HART capability may require a brief re-initialization period after insertion.

Q: What is the redundancy switching mechanism if the primary ESB bus path fails?

A: The “D” (Duplexed) architecture maintains two distinct ESB bus cable connections. If the primary transmission line experiences a failure, data communication seamlessly fails over to the secondary line. The switching is handled at the hardware level with no interruption to process control execution.

Q: Are both power supply modules required to be installed for normal operation?

A: The unit is designed for dual-redundant power supply operation. While it can operate with a single power module, installing two modules is required to maintain full redundancy. Each module accepts 220-240 V AC input at 50/60 Hz.

Field Installation Guidelines

• Mount the unit in a standard 19-inch rack using 4 x M5 screws. Ensure the rack provides adequate ventilation for the 10 kg unit weight and associated thermal dissipation.
• Install two power supply modules in the designated slots for full dual-redundant operation. Verify 220-240 V AC supply wiring is properly sized for the maximum 80 VA current consumption.
• Connect two separate ESB bus cables to the primary and secondary ESB bus ports. Maintain proper cable shielding and grounding practices to preserve signal integrity.
• The insulation bushing mounting style provides isolation between the unit and the rack chassis. Verify grounding continuity through the designated ground terminal before energizing.
• Operating environment must be maintained between 0 degC and +50 degC with non-condensing humidity (5% to 95% RH).