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DI581-S

Key Features & Benefits
High Channel Density

32-channel isolated digital inputs

Supports both 24V DC and 48V DC field signals

Individual channel diagnostics

Industrial-Grade Reliability

-40°C to +70°C operating temperature

High EMI/RFI immunity (EN 61000-6-2)

Hot-swappable design (with carrier module)

Advanced Diagnostics

Per-channel LED status indicators

Open wire detection

Group fault reporting

Flexible Configuration

Configurable filter times (0.1ms to 20ms)

Supports both sinking and sourcing inputs

Compatible with redundant systems

Technical Specifications
Parameter Specification
Input Channels 32 (electrically isolated)
Input Voltage 24V DC (19-30V) / 48V DC (38-60V)
Input Current 3mA typical (24V)
Isolation 500V channel-to-channel
Response Time Configurable 0.1-20ms
Power Consumption 2.5W typical
Certifications UL, CE, ATEX, IECEx
Typical Applications
✔ Power plant control systems
✔ Oil & gas process automation
✔ Water treatment monitoring
✔ Discrete manufacturing
✔ Safety interlock systems

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The ABB DI581-S is a high-density digital input module designed for ABB's AC 800M and S800 I/O distributed control systems. This rugged, high-performance module provides reliable signal acquisition for industrial automation applications, particularly in demanding environments like power generation and process industries.