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Product Introduction
The ABB DI581-S 1SAP284000R0001 is a robust Safety Digital Input Module designed for the AC500-S Safety PLC system. This module is part of ABB’s well-known range of high-reliability programmable logic controllers designed specifically for safety-critical applications. It provides digital input capabilities for safety-related systems, ensuring compliance with SIL 3 (Safety Integrity Level) requirements as per IEC 61508 and ISO 13849-1 standards.
The DI581-S module supports up to 8 digital input channels and is engineered with a compact footprint, making it suitable for modular and scalable control solutions. It is ideal for integration in machinery automation, process safety systems, and functional safety solutions across a variety of industrial sectors such as manufacturing, oil & gas, and power generation.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | DI581-S |
| Order Code | 1SAP284000R0001 |
| Product Type | Safety Digital Input Module |
| Number of Input Channels | 8 (Single-channel) or 4 (Dual-channel) |
| Input Type | Digital, PNP |
| Nominal Input Voltage | 24 V DC |
| Voltage Range | 14.4 to 30 V DC |
| Input Delay | Configurable (0.5 ms to 100 ms) |
| Safety Category | SIL 3, PL e, Cat. 4 |
| Diagnostics | Channel-level diagnostics |
| Interface | Module Bus (for AC500-S) |
| LED Indicators | Per channel status, diagnostics |
| Protection | Reverse polarity and short-circuit protection |
| Power Consumption | 1.2 W |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Mounting Type | DIN rail |
| Enclosure Rating | IP20 |
| Dimensions (W x H x D) | 62 × 76 × 67.5 mm |
| Weight | 0.122 kg |
| Compliance Standards | IEC 61131, IEC 61508, ISO 13849-1 |
| Certifications | CE, TÜV, cULus |
Applications
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Machine Safety Systems: Ensures that dangerous parts of machines are shut down safely.
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Emergency Stop Circuits: Critical in applications where emergency intervention may be needed.
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Process Industry: Applied in petrochemical and chemical processing plants for safety monitoring.
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Power Plants: Used to detect hazardous conditions and initiate protective actions.
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Factory Automation: Enhances safety in assembly lines and robotic cells.
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Oil & Gas Sector: Ideal for offshore and refinery safety systems.
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Material Handling Systems: Prevents accidents in conveyor systems or cranes.
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Packaging Machinery: Ensures safe operation in high-speed packaging lines.
Advantages
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Certified Safety: Meets stringent safety standards (SIL 3, PL e).
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Compact Design: Saves space in control cabinets.
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Fast Diagnostics: Enables quick fault identification and resolution.
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Flexible Configuration: Supports both single and dual-channel operation.
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Rugged Build: Suitable for harsh industrial environments.
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Seamless Integration: Works natively with AC500-S safety PLCs.
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Energy Efficient: Low power consumption contributes to overall system efficiency.
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LED Indicators: Immediate visual feedback for maintenance and operations.
Latest Product News Titles
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ABB Launches Enhanced Safety Modules for AC500-S Series
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DI581-S Gains TÜV Certification for SIL3 Applications
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Improved Diagnostic Features in ABB DI581-S for Faster Response
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ABB Safety Modules Set New Standard for Modular Safety Systems
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ABB Expands AC500-S Portfolio with Advanced Digital Input Modules
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New Firmware Update Increases Functionality of DI581-S Modules
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ABB Highlights Industrial Safety at Hannover Messe 2025
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ABB’s Safety Automation Solutions Drive Industry 4.0 Adoption
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Safety Meets Performance in ABB’s Latest Module Launch
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ABB Reports Rising Adoption of AC500-S in Critical Infrastructure Projects
Frequently Asked Questions (FAQ)
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What is the primary function of the DI581-S module?
The DI581-S is a safety digital input module designed to monitor safety-related digital signals for use in safety PLC systems. -
How many channels does the DI581-S support?
It supports 8 digital input channels, which can also be configured for dual-channel operation (4x dual). -
Is the DI581-S compliant with SIL 3 safety requirements?
Yes, it is certified for SIL 3 according to IEC 61508 and PL e, Cat. 4 according to ISO 13849-1. -
Which PLC system is compatible with the DI581-S?
It is designed for use with ABB’s AC500-S safety PLC system. -
Can the module detect faults in wiring or connected devices?
Yes, it has built-in diagnostics to detect short circuits, wire breaks, and other faults. -
Does the DI581-S require external power supply?
It operates on 24V DC supplied through the system’s power distribution. -
What type of input signal does the DI581-S support?
It accepts PNP-type digital signals (24V DC). -
Is the DI581-S suitable for harsh industrial environments?
Yes, it is designed for industrial use with wide temperature and humidity tolerances. -
How is the DI581-S mounted?
The module is DIN rail mountable. -
Are firmware updates available for the DI581-S?
Yes, ABB provides firmware updates for enhanced features and diagnostics.
Related Models from the Same Series
| Model Number | Description | Inputs/Outputs | SIL Level |
|---|---|---|---|
| DI581 | Standard Digital Input Module | 8 DI | No |
| DO581-S | Safety Digital Output Module | 4 DO | SIL 3 |
| AI581 | Analog Input Module | 8 AI | No |
| DI582-S | Extended Safety Input Module | 16 DI | SIL 3 |
| DO582-S | Extended Safety Output Module | 8 DO | SIL 3 |
| AC500-S PM592-S | Safety CPU for AC500-S Series | 4 DO | SIL 3 |
| TB521-S | Safety Terminal Base | 16 DI | SIL 3 |
| AX561 | AC500-S Communication Adapter | 8 DO | SIL 3 |
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