Technical Specifications Multi‑channel signal screw terminals. Auxiliary power loop terminal. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Module surface IP20. Matches ABB S800 I/O series mechanical and electrical specification.
Functional Features Provides field signal wiring terminal interface. Realizes signal transfer between field side and I/O module. Supports back‑plane bus signal routing. Built‑in module mechanical locking structure. Supports module hot‑swap under system permitted condition.
Application Scenarios Used as matching terminal base for S800 series I/O modules in chemical, power and metallurgy DCS system. Applied for project construction and spare‑part replacement.
Performance Parameters Terminal contact maintains stable signal transmission. Mechanical locking structure fixes I/O module reliably. Signal loop possesses low contact resistance.
Material Composition Glass‑fiber epoxy printed circuit board. Reinforced plastic housing. Screw‑type copper alloy wiring terminals. Back‑plane plug‑in contact pieces. Plastic module locking buckle.
Structural Characteristics Rack‑mount base unit structure. Front‑side fitted with signal wiring terminals. Upper position is plug‑in slot for I/O module. Rear side connects rack back‑plane bus.
Working Principle Field signal enters from screw terminals of TB806 base. Signal passes internal circuit board and transfers to plugged I/O module through slot contact. Back‑plane bus signal is transmitted to I/O module via base internal path.
Installation Requirements Mount TB806 base onto designated DCS rack slot and fasten fixing screws. Complete field signal cable wiring strictly according to engineering drawing. Ensure cabinet protective grounding. Insert corresponding I/O module into base slot and lock buckle.
Usage Notes Prevent foreign conductive object from falling into terminal area. Periodically check terminal tightening torque. Confirm module model matches base requirement. Avoid dust and corrosive gas accumulation.
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