ABB ai581-s safety analog input module

Why Choose the ABB 1SAP282000R0001 AI581-S Safety Analogue Input Module?

The ABB 1SAP282000R0001, type designation AI581-S, is a safety-rated analogue input module designed for functional safety applications within ABB AC500-S industrial automation systems. As part of the ABB S500-S safety I/O range, it provides four safety analogue input channels for reliable acquisition of current signals from safety-related sensors and process instrumentation.

The AI581-S provides 4 safety analogue inputs supporting 4–20 mA current signals with 14-bit resolution. Its safety architecture supports four channels for applications up to SIL2 or two safety input channels for applications up to SIL3, making it suitable for safety-related process measurements where dependable analogue signal acquisition is essential.

Designed for 24 V DC systems and 2-wire field connections, the AI581-S combines functional safety capability with compact S500 construction. Measuring approximately 67.5 × 76 × 62 mm and weighing approximately 0.125 kg, it integrates efficiently into AC500-S safety PLC installations while conserving control cabinet space.

Key Advantages

• 4 safety analogue input channels for safety-related process measurements.
• Supports applications requiring SIL2 and SIL3 functional safety.
• 4–20 mA current inputs for connection to common industrial transmitters and sensors.
• 14-bit resolution provides precise analogue signal acquisition.
• Designed for integration with the ABB AC500-S and S500-S safety automation platform.
• 2-wire connection supports common industrial current-loop instrumentation.

Key Features

• ABB AI581-S S500-S safety analogue input module.
• 4 safety analogue inputs.
• 4–20 mA input signal range.
• 14-bit resolution.
• Four safety analogue channels for applications up to SIL2.
• Two safety input channels can be used for applications up to SIL3.
• 24 V DC operation.
• 2-wire field connection.
• Configurable 50 / 60 Hz noise rejection.
• Designed for ABB AC500-S functional safety systems.
• Compact S500-format construction for industrial control cabinets.

Reliable Analogue Signal Acquisition for Functional Safety

Safety analogue input modules allow safety PLC systems to monitor continuously variable process measurements while maintaining the diagnostic and integrity requirements of functional safety applications. The ABB AI581-S acquires 4–20 mA signals from compatible safety-related transmitters and converts them into process values that can be evaluated by an AC500-S safety control system.

The module's four safety analogue inputs, 14-bit resolution and configurable noise rejection make it suitable for applications involving pressure, level, flow, temperature and other process measurements. Its ability to support SIL2 or SIL3 applications according to the selected channel configuration enables engineers to integrate analogue instrumentation into demanding machine and process safety architectures.

Typical Applications

• Safety-related process measurement systems.
• ABB AC500-S safety PLC installations.
• 4–20 mA safety transmitter monitoring.
• Pressure, level, flow and temperature monitoring.
• Process automation and functional safety systems.
• Factory automation and production machinery.
• Machine safety control systems.
• Safety-related industrial monitoring applications.