Siemens SINAMICS S120 Function Manual page 566

Safety Integrated basic functions
9.2 General information
The following Safety Integrated functions (SI functions) are available:
● Safety Integrated Basic Functions
Hardware
Power/Motor Modules booksize format
Power/Motor Modules chassis format
Power Modules blocksize
564
The following functions are part of the standard scope of the drive and can be used
without any additional license:
– Safe Torque Off (STO)
STO is a safety function that prevents the drive from restarting unexpectedly, in
accordance with EN 60204-1:2006 Section 5.4.
– Safe Stop 1 (SS1, time controlled)
Safe Stop 1 is based on the "Safe Torque Off" function. This means that a Category 1
stop in accordance with EN 60204-1:2006 can be implemented.
– Safe Brake Control (SBC)
The SBC function permits the safe control of a holding brake. Special requirements:
Constraint
–
Order number xxx3 or higher
A Safe Brake Relay is also required
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions