Baumuller BM5-O-SAF-002, Operation Manual, Page: 57 / 182

Safety Functions
Operation Manual Safety Module for b maXX 5000 BM5-O-SAF-002/3
Document no.: 5.11016.03
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of 180
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10.3 Safe Torque Off (STO)
NOTE!
The Safety Modules SAF-002 and SAF-003 support the safety function STO.
10.3.1 Description
The safety function "Safe Torque Off (STO)" (as per EN 61800-5-2) is used for the safe
switch-off of the drive at the safe pulse inhibit. In case of an error or at request the Safety
Module assures, that the controller’s voltage supply is switched off safe in the driver stage
and that the pulse inhibit is therefore activated. The generation of a rotating field for motor
control is prevented thereby. This switch-off function does not disconnect the energy
supply from the motor.
Safe torque off (STO):
m
The control of the power output stage is safely interrupted at the safety function. The
motor’s rotating field is safely interrupted. The drive coasts uncontrolled until it stops at
activation of this safety function.
m
The safety function complies with the stop category 0 as per EN 60204-1.
Figure 16: Safety function STO