Control Possibilities; Safe Torque Off (Sto); Safe Stop 1 (Ss1) - Siemens Sinamics S120 Function Manual

Overview of Safety Integrated functions
3.2 Safety Integrated Extended Functions
3.2.2

Control possibilities

The following options are available for controlling Safety Integrated Extended Functions:
● PROFIsafe
● TM54F
● Onboard F-DI (CU310-2)
● Permanent selection (Safety Integrated functions without selection)
3.2.3

Safe Torque Off (STO)

For the control options and the functionality for "Safe Torque Off" (STO), see Section "Safe
Torque Off (STO) (Page 62)".
3.2.4

Safe Stop 1 (SS1)

Definition according to EN 61800-5-2:
"The function SS1 brakes the motor, moni-
tors the magnitude of the motor decelera-
tion within specified limits, and after a delay
time or violation of a speed threshold, initi-
ates the STO function."
Ex ample of how the function can be used
Example
After an Emergency Stop button has been
pressed, the drive must be braked as quickly as
possible and brought into the STO state.
A central Emergency Stop button ensures that
several drives are braked as quickly as possible
and brought into the STO state.
40
Po ssible solution
Wire the Emergency Stop button with a fail-
•
safe input.
Select SS1 via the fail-safe input.
•
SS1 brakes the drive and then brings it into
•
the STO state.
Evaluating an emergency stop pushbutton in
•
a central control.
Select SS1 via PROFIsafe.
•
SS1 brakes the drives and then brings them
•
into the STO state.
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated