ABB AI931 Analog Input Module

Product Overview

The ABB AI931 is an advanced Analog Input Module built for process control and safety applications. It efficiently processes analog signals from field devices, converting them into digital data for precise monitoring and control. This module works seamlessly with ABB’s Distributed Control Systems (DCS) and Programmable Logic Controllers (PLCs). Designed for industrial automation, it ensures accurate measurements of critical variables such as temperature, pressure, flow, and level.

Key Features

Versatile Signal Compatibility: The ABB AI931 accepts a wide range of signal types. These include 4-20mA, voltage, thermocouples, and RTDs, making the module ideal for many applications.
Exceptional Accuracy: With a typical accuracy of ±0.1% of full scale, the AI931 guarantees reliable and precise data for efficient process control.
Galvanic Isolation: The module provides galvanic isolation between channels and power supply, reducing the risk of electrical noise and ensuring stable performance.
HART Communication Support: Some versions of the AI931 support HART communication for device configuration and diagnostics. This makes setup, maintenance, and troubleshooting easier.
Safety Certifications: The AI931 meets SIL2 and SIL3 safety standards, making it suitable for safety-critical applications, such as emergency shutdown systems and fire and gas detection systems.
User-Friendly Configuration: Configure the AI931 effortlessly using ABB’s engineering tools like Control Builder or S900 Programming Tool. This simplifies the integration and setup process.

Technical Specifications

Parameter	Specification
Model	ABB AI931
Manufacturer	ABB
Product Type	Analog Input Module
Number of Channels	Typically 4 or 8 channels
Signal Types	4-20mA, Voltage, Thermocouples, RTDs
Resolution	Typically 12-bit or 16-bit (depends on model)
Accuracy	±0.1% of full scale
Isolation	Galvanic isolation between channels and power supply
Communication	HART communication (optional)
Power Supply	24 VDC
Mounting	DIN rail
Dimensions	Compact (similar to other ABB analog modules)

Applications

Process Control: The ABB AI931 excels in process control applications across industries such as oil & gas, chemical processing, power generation, and water treatment. It accurately monitors critical process parameters, helping to optimize system performance.
Integration with ABB Systems: The AI931 integrates smoothly with ABB’s DCS and PLC systems, streamlining automation and improving overall system reliability.
Safety-Critical Applications: With SIL2 and SIL3 certification, the AI931 is ideal for safety-critical systems such as emergency shutdown systems, fire and gas detection, and turbine control, ensuring high safety standards.