ABB AI581-S 1SAP282000R0001 Safety Analog Input Modules

The ABB AI581-S (part number 1SAP282000R0001) is a Safety Analog Input Module designed for integration into ABB’s AC500-S Safety PLC platform. This module is engineered for SIL 3 (IEC 61508) and PL e (ISO 13849-1) compliant systems, offering high-integrity monitoring of analog process signals such as 0–20 mA or 4–20 mA loops. It is ideal for critical safety-related applications where secure, redundant, and reliable input acquisition is required.

The AI581-S module features 2 individually monitored analog channels, each capable of diagnosing signal integrity, wire break detection, and out-of-range conditions. It is fully compatible with the AC500 PLC family’s PROFINET/PROFIsafe communication architecture and can be deployed in a broad range of functional safety automation environments.

Key Features

• 2-channel analog input for 0–20 mA and 4–20 mA signals

• Designed for SIL3 / PL e safety functions

• Short-circuit and wire-break detection

• HART transparency (read-through) supported

• Supports diagnostic data via PROFIsafe

• Fault-tolerant design with cyclic redundancy check (CRC)

• LED indicators for channel and fault status

• Compatible with AC500-S safety CPU via safety network

• Certified to IEC 61508, ISO 13849-1, IEC 62061

Technical Specifications

Product Advantages

• Functional Safety Compliance: Certified to the highest industrial safety standards (SIL3/PL e).

• Dual-channel Design: Independent signal acquisition for critical redundancy and safety control.

• Reliable Diagnostics: Built-in monitoring for signal loss, short circuits, and performance degradation.

• Flexible Signal Compatibility: Handles standard current-loop signals used in industrial sensors.

• Transparent HART Communication: Enables access to smart sensor data without compromising safety.

• Seamless Integration: Part of the ABB AC500-S ecosystem with PROFIsafe communication.

• Compact Design: Slim 35 mm housing fits densely populated safety systems.

• LED Feedback: Quick and visual confirmation of input and fault states.

Industry Applications

• Emergency shutdown systems (ESD)

• Burner management and fuel control systems

• Chemical and petrochemical safety monitoring

• Pharmaceutical manufacturing and cleanroom environments

• Power generation and turbine protection

• Water/wastewater treatment with critical process control

• Mining and heavy machinery interlock systems

• Oil & gas production, including offshore safety modules

Frequently Asked Questions (FAQ)

1. Q: What types of input signals are supported by AI581-S?

   A: It supports 0–20 mA and 4–20 mA analog current signals.

2. Q: Is the AI581-S suitable for SIL3 applications?

   A: Yes, it is certified for SIL3 according to IEC 61508 and PL e per ISO 13849-1.

3. Q: How many channels are available?

   A: It has two independent analog input channels.

4. Q: Can the AI581-S detect wiring faults?

   A: Yes, it includes wire-break, short-circuit, and out-of-range diagnostics.

5. Q: Does it support HART communication?

   A: Yes, HART data can be read transparently for diagnostic purposes (non-safety critical).

6. Q: How is the module powered?

   A: Power is supplied via the AC500 system bus; no separate power input is required.

7. Q: What type of mounting does the module support?

   A: It is DIN-rail mounted (35 mm rail standard).

8. Q: Can I use this module in hazardous environments?

   A: Yes, it holds ATEX and IECEx certifications for use in explosive atmospheres.

9. Q: Is it compatible with non-safety AC500 modules?

   A: The AI581-S must be used in safety-certified configurations with AC500-S CPUs.

10. Q: What is the module’s width?

    A: It is 67.5 mm wide, making it suitable for high-density panel installation.