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ABB NROI01 is an ABB Harmony Rack remote I/O termination unit used to provide the field and link connection for compatible remote I/O communication hardware.
NROI01 forms part of the cabinet termination path between the controller-side remote I/O module and the installed remote I/O link and associated cable system.
ABB NROI01 requires exact verification of the remote I/O module, media type, cable assembly, network topology and link settings before replacement; NROI and NTRL configurations are not assumed interchangeable.
ABB NROI01 is selected by its complete article identity and the receiving-system interfaces. Confirm remote I/O module, link media, module cable, terminal plan and grounding before installation.
NROI01 is documented for the controller-side remote I/O link. The unit terminates the remote i/o connection between the controller side and distributed hardware.
Apply NROI01 only with the NROI01 field-termination arrangement; confirm remote I/O module, link media, module cable, terminal plan and grounding.
Record the installed arrangement before service, then verify link continuity, termination, communications and remote I/O status after replacement.
NROI01 is documented as a remote I/O termination unit at the controller-side remote I/O link. The unit terminates the remote i/o connection between the controller side and distributed hardware. Source: ABB Harmony Rack I/O documentation.
Before installing NROI01, confirm remote I/O module, link media, module cable, terminal plan and grounding. After installation, verify link continuity, termination, communications and remote I/O status before releasing the equipment.