The ABB DI‑S (SAPR) is a safety-rated digital input module for the AC‑S PLC system. Featuring standard safety inputs (SDI) and test pulse channels, it supports SIL  in full mode and SIL  with -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: DI‑S (ABB P/N SAPR)
Safety Inputs: SDI for SIL  or SDI for SIL  operation
Test Pulse Outputs: dedicated; ensures diagnostics and integrity testing
Supply:  V DC process voltage (UP),  W consumption; protected with  A fast fuse
Configurable Input Delay:  …  ms
Connection: -/-wire system; single cable routing reduces wiring complexity
Isolation & Diagnostics: Galvanic separation per module; built-in self-test
Certifications: CE, cULus, TÜV, PROFIsafe V; meets IEC SIL/SIL
Environmental Specs:

• Operating:  °C to + °C (standard), – °C to + °C in XC version

• Storage/Transport: – °C to + °C

• IP enclosure; suitable for cabinet mounting
Mechanical Dimensions: . ×  ×  mm; weight ~ g
Mounting: Snap onto -mm DIN rail with TU(-XC) terminal base

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

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