AI845 ABB Analog Input Module

ABB AI845 Product Introduction and Technical Specifications
Brand: ABB
Model: AI845, part number 3BSE023675R1
Full Product Name: 8-channel HART Analog Input Module
Series: S800 Distributed I/O System
Country of Origin: Sweden
HS Code Reference: 85389091 (For customs reference only; confirm classification with local customs authority before declaration)
Overall dimension: 119 mm × 45 mm × 102 mm
Net weight: Approximately 0.23 kg

Electrical Specifications
Module operating supply voltage: 24 V DC nominal, operating range 18 V DC to 30 V DC
Supported input signals: 0/4–20 mA DC current, 0/1–5 V DC voltage
Input resistance for voltage channel: greater than 10 MΩ
Input resistance for current channel: 250 Ω
Resolution: 12-bit
Measurement accuracy: ±0.1% of full scale
Power consumption: Maximum 3.5 W
Rated isolation voltage: 50 V
Operating temperature range: 0 °C to +60 °C
Storage temperature range: -40 °C to +85 °C
Main Characteristics
Supports HART pass-through communication for intelligent transmitter management;
Eight single-ended input channels, configurable per channel for voltage or current signals with TU844 / TU845 base;
Supports redundant module pairing for high-reliability continuous process control;
Built-in current-limited power supply for field transmitters;
Comprehensive channel and hardware self-diagnosis with fault reporting;
Hot-swappable design allowing module replacement without shutting down the I/O station;
LED indicators for module power, running status and channel alarms;
Communicates with controllers via ModuleBus or PROFIBUS DP;
Meets industrial EMC standards with strong anti-interference performance;
Compatible with multiple types of S800 termination units including TU810, TU844 and TU845;
Widely applied in power plants, petrochemical, chemical, water treatment and other process automation projects.