ESB Bus Node Unit Yokogawa ANB10D-420/CU2N/NDEL

Suffix Breakdown & Model Matrix

Hardware Specifications

ESB Bus Communication & Channel Isolation

The ANB10D series supports dual-redundant ESB (Extended Serial Backplane) bus communication, maintaining deterministic data transfer rates between the node unit and connected I/O modules. Channel-to-channel isolation is implemented at the electrical interface level to suppress transient noise propagation from field wiring. The unit sustains uninterrupted operation during power module switchover without interrupting the ESB bus token passing sequence.

Frequently Asked Questions

Q: Does the ANB10D support hot-swapping of power supply modules in dual-redundant mode?

A: Yes, the dual-redundant power supply configuration allows removal and replacement of one power supply module while the second maintains full bus operation.

Q: What is the maximum current load supported on the 24 V dc auxiliary output?

A: The 24 V dc supply is rated for a maximum continuous load of 5.5 A under specified ventilation conditions.

Q: Is the NDEL software license retroactive to earlier firmware versions?

A: The NDEL license activates node expansion functions only when installed on firmware revisions supporting the feature set; refer to Yokogawa compatibility tables before upgrade.

Field Installation Guidelines

Mount the unit into a standard 19-inch rack using four M5 screws torqued to manufacturer specifications. Ensure adequate clearance above and below the module for airflow. Ground the chassis directly to the rack’s earth bus using a low-impedance conductor. Segregate ESB bus cables from high-voltage power lines to prevent electromagnetic interference. Verify all connector latching mechanisms are fully engaged prior to energizing the node unit.