The ABB AI815 (3BSE052604R1) is an 8-channel analog input module designed for the S800 I/O system. This module is engineered to support HART (Highway Addressable Remote Transducer) pass-through communication, allowing for advanced diagnostics and configuration of field devices. It provides flexible input options, supporting current (0...20 mA, 4...20 mA) or voltage (0...5 V, 1...5 V) signals, though these signal types cannot be mixed on a single module.

Features

• 8-channel analog input capacity with 12-bit resolution.
• Supports HART pass-through communication for intelligent field device management.
• Integrated current-limited transmitter supply for 2-wire or 3-wire field devices.
• Groupwise isolation from ground to mitigate electrical noise and ground loops.
• Robust input protection capable of withstanding overvoltage or undervoltage of at least 11 V DC.

Applications

• Oil & Gas: Monitoring of wellheads and pipeline pumping stations.
• Power Generation: Boiler control and steam turbine auxiliary systems.
• Chemical & Pharmaceutical: Precision monitoring of reaction vessels and batch control.
• Water & Wastewater: Pumping station management and aeration system control.

Technical Specifications

Installation Guidelines

• Ensure the system is powered down before inserting or removing the module from the Module Termination Unit (MTU).
• Compatible with TU810, TU812, TU814, TU830, TU833, TU835, and TU838 MTUs.
• Maintain proper grounding practices to ensure the effectiveness of the module's galvanic isolation.
• Use shielded cabling for analog signals to minimize EMI in industrial environments.
• Verify that external power supplies used for HART transmitters are HART-compatible.

FAQ

What is the primary function of the ABB AI815?

The AI815 is an S800 I/O analog input module used to interface field sensors with ABB control systems, supporting both standard analog signals and HART communication.

Can I mix voltage and current signals on this module?

No, the module must be configured for either voltage or current inputs; mixing signal types on the same module is not supported.

Does this module provide power to field transmitters?

Yes, it features a current-limited transmitter supply per channel, which simplifies the connection of 2-wire or 3-wire HART-compatible transmitters.