Technical Specifications Multi‑channel analog input, compatible with current and voltage signals. Back‑plane system bus interface. Auxiliary power 24 V DC, typical power consumption 4.2 W. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Channel‑to‑bus galvanic isolation.
Functional Features Accepts current and voltage analog signals from field transmitters and sensors. Executes high‑precision analog‑digital signal conversion. Transmits digital process data to DCS controller over back‑plane bus. Front‑panel LED indicates channel signal and module fault status. Built‑in hardware self‑diagnosis detects field wiring loop faults.
Application Scenarios DCS I/O spare part for process industry. Deployed in petrochemical, power and pharmaceutical plant automation system maintenance.
Performance Parameters Multi‑signal‑type compatible acquisition capability. High measurement precision. Strong anti‑interference performance under industrial field environment.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Signal conditioning and analog‑digital conversion assemblies. Back‑plane plug‑in connector and field wiring terminals.
Structural Characteristics Standard S800 rack plug‑in module. Front side equipped with field wiring terminals and status LED indicators. Rear side with back‑plane bus connector. Weight approximately 0.40 kilogram.
Working Principle Field analog signals access module through front‑end terminals. Internal conditioning circuit adjusts signal amplitude for analog‑digital conversion. Converted digital data is transmitted to DCS controller via back‑plane bus. Diagnosis circuit monitors each input channel loop status continuously.
Installation Requirements Disconnect rack auxiliary power before replacement. Insert AI830A into target rack slot and lock fixing latch. Complete field instrument signal wiring on front terminals. Ensure back‑plane connector is fully engaged. Restore power supply, configure signal type parameter and verify data acquisition accuracy.
Usage Notes Select corresponding signal type in system configuration software. Use shielded cables for field analog wiring. Avoid condensation and corrosive gas environment. Hot‑plug operation under powered condition is prohibited.
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