ABB – DI581‑S – Safety Digital Input Module, 16 Channel 24 VDC (1SAP284000B0001)

The ABB DI581‑S is a high-integrity safety digital input module from the AC500-S pro series. It offers 16 safety-rated digital inputs and 8 non-safety pulse outputs, configurable for SIL 2 full operation or SIL 3 with discrepancy monitoring. Designed for PROFIsafe systems, it ensures robust diagnostics and high-speed safety integration.

Key Features:

• Model / Part No.: DI581‑S – 1SAP284000B0001  

• Safety Input Channels:

  • 16 digital inputs at 24 V DC, rated SIL 2

  • SIL 3 available for eight inputs when using discrepancy time monitoring  

• Pulse Outputs: 8 transistor pulse/test outputs for diagnostic signaling, up to 10 mA each  

• Configurable Input Filtering: Adjustable 1–500 ms for input signal processing

• Supply & Consumption:

  • Powered by 24 V DC (20.4–28.8 V), typical consumption ~180 mA

  • Built-in overload and reverse-polarity protection  

• Communication: PROFIsafe V2 over PROFINET via compatible AC500-S bus interfaces  

• Physical & Environmental:

  • Compact (67.5 × 76 × 62 mm), IP20 rated, 130 g weight  

  • Operates 0–60 °C (–40 °C to +70 °C XC variant), supports altitudes up to 2,000 m  

• Diagnostics & Protection:

  • LED indicators per input, error and power LEDs

  • Test pulse outputs support health monitoring