Overview

The ABB AI815 Analog Input Module is a versatile and reliable component within the S800 I/O family, engineered for demanding industrial applications. With support for both voltage and current inputs, it enables accurate signal acquisition from a wide range of field devices such as transmitters, sensors, and actuators.

Moreover, the module distributes HART-compatible power to each channel, simplifying the connection of 2-wire and 3-wire transmitters. Its robust input protection and high-resolution conversion ensure stable performance even in electrically noisy environments.

In addition, the AI815 is fully compatible with ABB’s 800xA and Freelance control systems, making it a preferred choice for scalable automation architectures. Whether used in process control, energy management, or manufacturing, this module delivers consistent and precise data for real-time decision-making.

Technical Data

Typical Applications

• Process Control Systems: Captures analog signals from pressure, temperature, and flow transmitters.

• Energy Monitoring: Interfaces with current and voltage sensors for load analysis and power quality tracking.

• Manufacturing Automation: Enables precise feedback from analog sensors in production lines.

• Water and Wastewater Management: Monitors flow rates, tank levels, and chemical dosing systems.

• Pharmaceutical and Chemical Plants: Supports high-resolution analog data acquisition for regulated environments.

For instance, in a chemical processing plant, the AI815 can read 4–20 mA signals from pH and conductivity sensors, ensuring accurate dosing and compliance. Therefore, it plays a critical role in maintaining product quality and operational safety.

FAQ

Q: Can AI815 handle both voltage and current signals simultaneously?
A: No, voltage and current signals cannot be mixed on the same module.

Q: Is the transmitter power supply built into the module?
A: Yes, it distributes HART-compatible power to each channel with supervision and current limiting.

Q: What control systems is it compatible with?
A: It integrates seamlessly with ABB’s 800xA and Freelance systems.

Q: What kind of input protection does it offer?
A: It can withstand overvoltage or undervoltage conditions of at least 11 V DC.

Q: Is it suitable for outdoor installations?
A: Yes, with proper enclosure, it operates reliably from –25°C to +70°C.