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Within the Bailey Infi 90 product line, ABB TSITU01 serves as a TSI Termination Unit.
From a maintenance perspective, this type of unit concentrates field connections at a defined termination point before signals reach the related control-system electronics. Correct pairing with the associated I/O hardware is essential. The product should be matched to the documented control-system position.
In an Infi 90 installation, modules are assigned distinct control, signal, communication, and support responsibilities. Preserving the exact product identity helps maintain the configuration documented for the affected control node. The original equipment schedule should guide compatibility review.
In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. Configuration records should be reconciled with the exact installed assembly.
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