Supported Functions - Siemens SINAMICS S120 Function Manual

General information about SINAMICS Safety Integrated

1.2 Supported functions

● IEC 61508
● IEC 61800-5-2
Note
In conjunction with certified components, the safety functions of the SINAMICS S120 drive
system fulfill the following requirements:
• Category 3 to EN 954-1.
• Safety integrity level 2 (SIL 2) to IEC 61508.
A list of certified components is available on request from your local Siemens office.
1.2 Supported functions
Supported functions:
The functions mentioned here are in compliance with IEC 61800-5-2.
The following Safety Integrated (SI) functions are available:
● Safety Integrated basic functions
16
Functional safety of electrical/electronic/programmable electronic safety-related systems
This standard defines safety integrity levels (SIL) which not only describe a certain
degree of integrity with regard to failsafe software but also defined, quantitative error
probability ranges with regard to the hardware.
Adjustable-speed electrical power drive systems
Part 5-2: Safety requirements - Functional
These functions are part of the standard scope of the drive.
– Safe torque off (STO)
STO is a safety function that prevents the drive from restarting unexpectedly, in
accordance with EN 60204-1, Section 5.4.
Note
When a drive object that has Safety Integrated functions released is switched to
"Parking" mode, the Safety Integrated software responds by activating STOP without
generating a separate message.
– 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 can be implemented.
– Safe Brake Control (SBC)
The SBC function permits the safe control of a holding brake.
Function Manual, (FHS) , 07/2007 Edition, 6SL3097-2AR00-0BP0
Safety Integrated