Yokogawa ANR10D-420 ESB Bus Node Unit

The Yokogawa ANR10D-420, also cataloged as the ANR10D ESB Bus Node Unit, operates as a dedicated hardware component for high-speed I/O module expansion and deterministic backplane communication within CENTUM VP process control architectures.

Suffix Breakdown & Model Matrix

Hardware Specifications

4-20 mA HART Loop Protocol and Channel Isolation

The ESB Bus Node Unit maintains galvanically isolated internal backplane power and communication buses, isolating field-side I/O modules from central control station power variations. Integrated dual-redundant power supply units provide seamless failover execution across independent 220 to 240 VAC utility feeds. Backplane signal paths deliver low-latency transmission for analog process loops, HART communication passthrough, and high-density digital I/O channels without degradation from power transients.

Frequently Asked Questions

Q: Does the ANR10D-420 support redundant power supply feeds on separate AC circuits?

A: Yes. The unit incorporates a dual-redundant power supply configuration designed to accept two independent 220 to 240 VAC inputs, allowing continuous operation if one AC line fails.

Q: Can individual AC power supply units within the ANR10D-420 be replaced while online?

A: Yes, online hot-swapping of a failed power supply module is supported provided the remaining AC power supply module is energized and operating within standard voltage limits.

Field Installation Guidelines

1. Ensure both 220 to 240 VAC power feeds are switched off before mounting the node unit into the control cabinet rack.
2. Firmly secure the chassis ground terminal to the cabinet protective earth (PE) bar using a low-impedance grounding strap.
3. Verify that ESB bus interface cables are properly installed and locked with line terminators in place at the physical ends of the bus segment.
4. Maintain unimpeded vertical airflow above and below the node chassis to ensure proper heat dissipation across all installed I/O modules.