The ABB DI‑S is a high-integrity safety digital input module for the AC-S/S PLC platform. Featuring up to safety-rated  V DC input channels, it delivers SIL  performance calmly, and SIL  capability on channels when using discrepancy monitoring. Equipped with test pulse outputs and PROFIsafe V support, this module ensures reliable diagnostics and safe system integration.

Key Features:

Model / Part No.: DI‑S, SAPR
Input Channels:
- digital safety inputs (SIL )
- SIL -capable channels (with discrepancy monitoring)
Test Pulses: non-safety pulse outputs for diagnostics
Supply & Wiring:  V DC; -wire connection per channel, reverse-polarity protected, up to  ms input filtering
Communication Protocols: PROFIsafe via compatible PROFINET interface modules
Safety Integrity: SIL  for full input set; SIL  for configured channel groups
Physical Specs: . ×  ×  mm, ~. kg; IP protection, DIN-rail mountable
Operating Range: – °C; supports -bit input filters (– ms); electrical isolation between zones

ABB – DI581-S – Safety Digital Input Module 16-Channel 24 V DC (1SAP284000R0001)

ABB – DI581-S – Safety Digital Input Module 16-Channel 24 V DC (1SAP284000R0001)