3
Safety concept
Drive safety functions
Manual – MOVISAFE
®
CS..A Safety Card
18
3.7.1
STO – Safe Torque Off
If the STO function is activated, the drive inverter no longer supplies power to the mo-
tor. As a result, the drive cannot generate torque. This drive safety function corres-
ponds to a non-controlled stop according to EN 60204-1, stop category 0.
t
V
t1
9007201225613323
= Drive safety function trips
v
= Speed
t
= Time
t
1
= Point of time when STO is triggered.
INFORMATION
The motor coasts to a halt or is stopped mechanically.
Controlled standstill is preferred, if possible.
24842532/EN – 04/2018
