Siemens SIMATIC ET 200pro - Safe Torque off (STO) Safety Function; Description of Functions

Setting functions
8.8 Safe Torque Off (STO) safety function
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
153
Parameter
Description
p1351
Starting frequency, motor holding brake
(factory setting 0%)
Setting the frequency set value at the slip compensation output when starting with
motor holding brake.
When the parameter p1351 is set to > 0, slip compensation is automatically switched
on.
p1352
Starting frequency for motor holding brake
(factory setting 1351)
Setting the signal source for the frequency set value at the slip compensation output
when starting with motor holding brake.
p1475
Speed controller torque set value for motor holding brake
(factory setting 0)
Setting the signal source for the torque set value when starting with motor holding
brake.
8.8
Safe Torque Off (STO) safety function
These operating instructions describe the commissioning of the STO safety function when it
is controlled via a fail-safe digital input.
You will find a detailed description of all safety functions and control using PROFIsafe in the
Safety Integrated Function Manual, see Section Manuals for your inverter (Page 248).
8.8.1
Description of functions
How does STO function?
The converter with active STO prevents machine
components from inadvertently starting.