Perimeter Guarding with Altivar 32 and Safety Light Curtain Safety Function

This document describes a safety function for perimeter guarding that uses a safety light curtain (ESPE Type 4) and a variable speed drive (Altivar 32) to achieve a controlled stop (Stop Category 1) followed by a Safe Torque Off (STO). It details the system design, safety level calculation (achieving PL d and SIL CL 2), and the required components for applications like textile, wood-working, and packaging machines.