Safety Integrated Basic Functions; Safe Torque Off (Sto) - Siemens Sinamics S120 Function Manual

Description of Safety Integrated functions

4.1 Safety Integrated basic functions

4.1 Safety Integrated basic functions
Not e
B as ic functions do not require an encoder
The Safety Integrated Basic Functions are functions for safely stopping the drive. You do not
require an encoder.
Not e
A pplication of t he B asic Functions
The Basic Functions are available without any restrictions in all control modes, with and
without an encoder, for synchronous, induction, and reluctance motors.
Not e
Cont rol via TM54F
If you want to control the Safety Integrated Basic Functions via TM54F, set p9601.6 = 1.
Not e
P FH v alues
The PFH values of the individual SINAMICS S120 safety components can be found at:
http://support.automation.siemens.com/WW/view/de/76254308
4.1.1

Safe Torque Off (STO)

In conjunction with a machine function or in the event of a fault, the "Safe Torque Off" (STO)
function is used to safely disconnect the torque-generating energy supply to the motor.
A restart is prevented by the two-channel pulse suppression. The switching on inhibited
prevents an automatic restart after deselection of STO.
The two-channel pulse suppression function integrated in the Motor Modules / Power
Modules is the basis for this function.
Functional features of "Safe Torque Off"
● The function is completely integrated in the drive. It can be selected via terminals, TM54F
or PROFIsafe from an external source.
● The function is drive-specific, i.e. it is available for each drive and must be individually
commissioned.
● The function must be enabled via parameter.
62
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated