Technical Specifications Multi‑channel screw‑type signal terminals, auxiliary power loop terminals. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Protection grade IP20. Matches S800 I/O system mechanical dimension and electrical requirements.
Functional Features Supports field signal access for analog input, analog output and digital I/O modules. Transmits process signals between field cables and plug‑in I/O modules. Realizes back‑plane bus signal routing. Built‑in module mechanical locking structure. Supports hot‑swap under system allowed conditions.
Application Scenarios Applied in petrochemical, power, water‑treatment DCS control systems. Used for new cabinet assembly, site renovation and spare‑part replacement of S800 I/O stations.
Performance Parameters Stable contact performance for long‑term cabinet operation. Low contact resistance on signal loops. Locking structure resists mechanical vibration impact.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Reinforced flame‑retardant plastic housing. Copper‑alloy screw wiring terminals. Back‑plane plug‑in contact pieces. Plastic locking buckle assembly.
Structural Characteristics Standard rack‑mount base unit. Front face arranges field signal wiring terminals. Upper position is I/O module plug‑in slot. Rear side connects rack back‑plane bus. Weight approximately 0.40 kilogram.
Working Principle Field process signals connect to TU840 screw terminals. Signals go through internal circuit board and transfer to inserted I/O module via slot contacts. Controller data from back‑plane bus is transmitted to I/O module through base internal circuit.
Installation Requirements Mount TU840 onto target rack slot and fasten fixing screws. Complete field signal wiring following engineering schematic. Ensure cabinet protective grounding. Insert corresponding I/O module and lock buckle. Verify channel communication status after system power‑on.
Usage Notes Avoid conductive foreign objects falling into terminal region. Check terminal tightening torque in regular maintenance. Verify I/O module compatibility before installation. Keep cabinet internal environment free of corrosive gas.
There are no reviews yet.