FSPS-21 PROFIsafe Safety Functions Module Manual

This document describes ABB's FSPS-21 PROFIsafe safety functions module, which integrates seamlessly into ABB all-compatible drives (ACS380, ACS580, ACS880) to provide TÜV-certified safety functions like Safe Torque Off (STO) and Safe Stop 1 (SS1-t) up to SIL 3 / PL e. It highlights the module's ability to combine safety communication, drive control, and PC tool communication over a single Ethernet cable, reducing component costs and simplifying engineering.