Overview

The ABB AI830 is a high-precision Analog Input (AI) module designed for the AC 800M controller series within the ABB System 800xA platform. It converts continuous analog signals from field instruments—such as temperature, pressure, and flow—into accurate digital data for process control. With 16-bit resolution and robust galvanic isolation, the AI830 ensures reliable, precise measurements in harsh industrial environments. Its support for both current and voltage signals makes it flexible for a wide range of sensors and transmitters, enabling accurate control of critical process loops.

Technical Data

Typical Applications

• Chemical and Petrochemical Plants:
  Monitors pressure, level, and temperature sensors to maintain reaction kinetics and safety.

• Water and Wastewater Treatment:
  Acquires flow, pH, and chlorine concentration data for process efficiency and compliance.

• Power Generation:
  Tracks steam temperature, feedwater flow, and boiler drum levels to ensure safe and reliable operation.

• Continuous Manufacturing:
  Supports tight control loops for blending, coating thickness, or material consistency.

FAQ: ABB AI830 Analog Input Module

Q1: What does the 16-bit resolution signify?
A1: It allows the module to divide the input range (e.g., 4–20 mA) into 65,536 discrete steps, enabling the detection of very small changes in process variables for high-fidelity control.

Q2: Why is galvanic isolation important?
A2: It protects the control electronics from high voltages, electrical noise, and ground loops originating in the field, improving system reliability and safety.

Q3: What happens if the AI830 detects an open circuit on a 4–20 mA loop?
A3: The module recognizes the current drop below 4 mA as a fault and sends a diagnostic alert to the controller, preventing erroneous process actions and ensuring data integrity.