Technical Specifications Multi‑channel screw‑type signal terminals and auxiliary power distribution terminals. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Protection grade IP20. Fully complies with S800 I/O system mechanical and electrical specifications.
Functional Features Provides field‑side wiring interface for analog and digital signal loops. Realizes bidirectional signal transmission between field cables and inserted I/O modules. Implements back‑plane bus signal routing. Equipped with reinforced mechanical locking mechanism for I/O modules. Supports hot‑swap operation under system permitted conditions.
Application Scenarios Deployed in power plant, petrochemical and metallurgical DCS automation systems. Serves as matching base for S800 series I/O modules for new project construction and field spare‑part replacement.
Performance Parameters Maintains low and stable terminal contact resistance. Mechanical locking structure avoids loose contact caused by cabinet vibration. Signal transmission keeps stable under long‑term continuous running.
Material Composition Glass‑fiber epoxy multilayer printed circuit board. Reinforced flame‑retardant plastic housing. Copper‑alloy screw wiring terminals. Back‑plane plug‑in contact components. High‑strength plastic module locking buckle.
Structural Characteristics Standard rack‑mount base structure. Front section arranges field signal wiring terminals. Upper slot is used for inserting compatible I/O module. Rear side connects rack back‑plane bus. Weight approximately 0.42 kilogram.
Working Principle Field analog and digital signals access the screw terminals of TU831V1. Signals pass internal printed circuit board and are delivered to plugged I/O module through slot contact points. Control data from back‑plane bus is routed to I/O module via internal circuit path of the base.
Installation Requirements Fix TU831V1 base to designated DCS rack position and tighten mounting screws. Complete field signal cable wiring strictly according to engineering drawings. Ensure reliable cabinet protective grounding.
Usage Notes Prevent metal debris and conductive dust from falling into terminal area. Inspect terminal tightening torque periodically. Confirm I/O module model matches TU831V1 specification.
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