



The ABB AI581-S is a highly accurate and versatile analog input module designed for use in industrial control systems. As part of the ABB control system portfolio, including 800xA and Freelance systems, the AI581-S ensures precise data acquisition from a wide range of analog sources, such as temperature, pressure, flow, and other critical parameters. With its robust construction, high-resolution capability, and wide input range, the AI581-S is ideal for industries such as process control, energy management, and industrial automation. Whether for simple monitoring or complex process control applications, the AI581-S provides reliable performance, helping optimize operational efficiency and system reliability.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | ABB AI581-S |
| Module Type | Analog Input Module |
| Number of Channels | 8 (Differential Inputs) |
| Input Range | ±10V, 0-20mA, 4-20mA |
| Resolution | 16-bit |
| Accuracy | ±0.1% of full scale |
| Input Impedance | 1 MΩ for voltage inputs, 250 Ω for current inputs |
| Operating Temperature | -20°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions | 144mm x 130mm x 30mm |
| Weight | 0.2 kg |
| Mounting Type | DIN Rail Mountable |
| Power Consumption | 2.5W |
| Communication Protocol | Modbus RTU, Profibus DP, Ethernet/IP |
Recommended Related Models
If you need additional features or greater flexibility, consider the following related ABB models:
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ABB AI832 – A higher-end model with more channels and better resolution, suitable for large-scale and demanding applications.
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ABB AI830A – A flexible alternative with more input channels, ideal for systems with extensive data acquisition requirements.
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ABB AI530 – A compact version for smaller setups, offering essential features and affordability while still ensuring precise measurements.
Popular Allen Bradley Models
For comparison, here are some similar models from Allen Bradley:
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Allen Bradley 1756-IF8 – An 8-channel analog input module designed for high-performance applications, offering flexible input ranges.
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Allen Bradley 1734-IE8 – A compact, rugged 8-channel analog input module for use in the POINT I/O system, ideal for smaller applications.