The ABB AI581-S is a high-performance analog input module designed for the S500-S I/O system. This robust module offers four safety-rated analog input channels, ensuring accurate and reliable data acquisition in critical industrial environments. Its compact design and compliance with SIL2/SIL3 safety standards make it suitable for a wide range of applications. The AI581-S provides crucial functionality for demanding applications where safety and precision are paramount. Its 4-channel design and 14-bit resolution ensure high-accuracy signal processing. The module is built to withstand harsh industrial environments and offers seamless integration with the S500-S system.
Key Features
4 Safety Analog Inputs (SAI)
SIL2/SIL3 Certified
4...20mA Input
14-bit Resolution
24VDC Supply Voltage
2-wire Connection
Compact Design
Applications
Process Automation
Factory Automation
Robotics
Machine Safety Systems
Industrial Control Systems
Frequently Asked Questions
The AI581-S complies with SIL2 and SIL3 safety standards according to IEC 61508.
The input range for the AI581-S is 4...20mA.
The AI581-S provides a 14-bit resolution for accurate signal acquisition.
Technical Specifications
Part Number
1SAP282000R0001
Product Name
AI581-S
Category
S500 I/O Modules
Height
76 mm
Width
67.5 mm
Depth
62 mm
Weight
0.125 kg
HS Code
85389091
Country of Manufacture
Germany
Part Number
1SAP282000R0001
Product Name
AI581-S
Category
S500 I/O Modules
Height
76 mm
Width
67.5 mm
Depth
62 mm
Weight
0.125 kg
HS Code
85389091
Country of Manufacture
Germany
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...