Schneider Electric technologies
Control & Automation / Machine Safety
Safe Motion / Drive Safety (STO, SLS)
Integrated drive safety keeps the safety function where the energy is. Safe Torque Off removes torque-producing power from the motor without dropping the whole panel, and Safely Limited Speed lets an operator work at a reduced, monitored speed during setup. The result is faster restarts, less wear on contactors and fewer reasons for anyone to defeat a guard.
Key characteristics
- Safe Torque Off (STO) certified to SIL 3 / PL e
- Safely Limited Speed (SLS) and safe stop functions on capable drives
- Wired safety inputs or safety over the fieldbus
- No line contactor required for the stop function
- Diagnostics reported to the safety controller and HMI
Typical applications
Setup and maintenance access without removing power from the whole machine
Manufacturer documentation