ABB – DI581‑S (1SAP284000R0001) – Safety Digital Input Module, 16 SDI, SIL 2/3

The ABB DI581‑S (1SAP284000R0001) is a safety-rated digital input module for the AC500‑S PLC system. Featuring 16 standard safety inputs (SDI) and 8 test pulse channels, it supports SIL 2 in full mode and SIL 3 with 8-input operation. Configurable input filters, single-wire connection, and on-module test pulse outputs make it ideal for functional safety applications in machinery and process control.

Key Features

• Model: DI581‑S (ABB P/N 1SAP284000R0001)  

• Safety Inputs: 16 SDI for SIL 2 or 8 SDI for SIL 3 operation  

• Test Pulse Outputs: 8 dedicated; ensures diagnostics and integrity testing  

• Supply: 24 V DC process voltage (UP), 5 W consumption; protected with 10 A fast fuse

• Configurable Input Delay: 1 … 500 ms  

• Connection: 1-/2-wire system; single cable routing reduces wiring complexity

• Isolation & Diagnostics: Galvanic separation per module; built-in self-test

• Certifications: CE, cULus, TÜV, PROFIsafe V2; meets IEC 61508 SIL2/SIL3  

• Environmental Specs:

   • Operating: 0 °C to +60 °C (standard), –40 °C to +70 °C in XC version

   • Storage/Transport: –40 °C to +85 °C

   • IP20 enclosure; suitable for cabinet mounting

• Mechanical Dimensions: 67.5 × 76 × 62 mm; weight ~130 g  

• Mounting: Snap onto 35-mm DIN rail with TU582(-XC) terminal base