Nov 14, 2022 · Just about every motion control device includes a concept known as safe torque off (STO), a digital signal included in order to operate the motor. If the STO signal is enabled, …

It describes the safety requirements, including PFDavg and PFH values and application verification information, and provides information on installing, configuring, and troubleshooting …

Feb 1, 2021 · What is Safe Torque Off? Safe Torque Off, known as STO for short is a safety feature on newer VFDs that turns off power on the VFD output to prevent the motor from …

Nov 11, 2025 · One of the most widely adopted functions is Safe Torque Off (STO). It prevents a motor from generating torque during faults, emergency stops, or maintenance, helping you …

Jul 3, 2017 · Motor drive manufacturers responded by providing contactors and other components built into their drives, creating a feature called Safe Torque Off (STO). STO describes a state …

For applications without automatic restart after a safe stop, follow the instructions in 4.5.1 Restart Prevention for STO Applica-tion. For applications with automatic restart after a safe stop, …

STO (Safe Torque Off) is a mechanism that prevents the drive from restarting unexpectedly. The Safe Torque Off function safely clears the output of the drive so it is reliably torque-free. STO …

As the STO function of the drive disables the power stage to the motor, it is suitable to be used in applications where the axis comes to a stop by itself in a sufficiently short time through its load …

Nov 15, 2024 · Safe Torque Off (STO) is an essential safety feature integrated into motor drives. Its primary function is to halt the motor’s torque generation without completely cutting off the …

This is also a safe torque-off condition (the safe torque-off status bit is set to 1 without an E49 error code). The safe torque-off condition must be resolved, but because the drive is not …