ABB AI801 Analog Input Module - 8-Channel

ABB AI801 Analog Input Module (3BSE020512R1)

A robust 8-channel module for the S800L system, designed to reliably read standard 0-20 mA and 4-20 mA signals from field instruments in industrial automation and process control applications.

Core Features & Benefits

• 8 Isolated Channels: Handles eight 0-20 mA or 4-20 mA signals, with the entire group isolated from ground for enhanced noise immunity and safety.
• Built-in Protection: Inputs are secured against short circuits to the power supply (up to 30 V DC) without damage, using a PTC resistor for current limiting.
• HART Communication Compatible: The input circuitry supports and withstands HART protocol signals superimposed on the 4-20 mA loop.
• High Accuracy & Resolution: 12-bit resolution with a maximum error of 0.1% ensures precise measurement and control.

Technical Specifications

• Article Number: 3BSE020512R1 AI801
• Signal Input: 0-20 mA, 4-20 mA DC, Unipolar
• Input Impedance: 230 - 275 kΩ (Current input, PTC included)
• Update Cycle: 1 ms
• Max Input Voltage: 30 V DC (Non-destructive)
• Power Consumption: 1.1 W (70 mA from +5V Modulebus, 30 mA from +24V external)
• Operating Temperature: 0 to +55 °C (For vertical mounting: max 40 °C)
• Connections: Via detachable connectors for easy installation and maintenance.
• Certifications: CE, cULus, ATEX Zone 2, and Marine (ABS, BV, DNV, LR).

Typical Applications

This module is ideal for interfacing with a wide range of 4-20 mA field devices, including:

• Pressure and Temperature Transmitters
• Flow Meters and Level Sensors
• Valve Positioners
• Other Process Control Instruments