The ABB AI880A (ordering number 3BSE039293R1) is an 8-channel analog input module within the S800 I/O family for the AC 800M controller. Each channel is galvanically isolated and supports both voltage and current signals, with HART pass-through for smart field devices.
Definition: an analog input module converts 0–10 V or 4–20 mA field signals into engineering-unit values for the control strategy. The AI880A is widely used in process plants for temperature, pressure and flow measurement.
Key features: 8 isolated channels, 16-bit resolution, HART on all channels, hot-swappable in redundant configurations. For wiring and calibration, consult the AI880A datasheet and the AC 800M hardware manual.