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
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.