Safe Stop 1 for Variable Speed Drives Design Guide

This document describes a safety-related stop function (Safe Stop 1) for variable speed drives, initiated by a moveable guard or emergency stop, achieving controlled braking followed by power cut-off via a safe torque off (STO) function. It details the design, redundant components, and compliance with performance level PL d and SIL 2 standards, including the safety module, guard switch, and drive integration.