Siemens SINAMICS S150 - Control of STO and SS1 for SINAMICS S120 Cabinet Modules

Controlling the safety functions
5.3 Control of "STO" and "SS1" via terminals on the Control Unit and the Motor/Power Module
Safety Integrated
76 Function Manual, 08/2023, A5E03264275A
5.3.6 Control of "STO" and "SS1" for SINAMICS S120 Cabinet Modules
Description
The safety functions contained in the standard ("Safe Torque Off" and "Safe Stop 1") can also
be used without option K82.
Note
Refer to the circuit diagrams enclosed for the interconnections of your device.
Note
The Safety functions must be activated prior to use via parameter assignment. An acceptance
test must be performed and an acceptance log must be created.
The following Safety Integrated Basic Functions (terms and definitions according to
IEC 61800-5-2) can be controlled:
• Safe Torque Off (STO)
• Safe Stop 1 (SS1) (time-controlled)
Note
The integrated safety functions, starting from the Safety Integrated (SI) input terminals of the
SINAMICS components (Control Unit, Motor Module), satisfy the requirements according to
IEC
61800-5-2, IEC 60204-1, ISO 13849-1 Category 3 for Performance Level (PL) d and
IEC 61508 SIL 2.
In addition, most of the SINAMICS safety functions have been certified by independent
institutes. A list of currently certified components is available on request from your local
Siemens office or local sales office.
Recommended application
This variant is used when:
• Activation will be executed optically isolated with a voltage of 24 VDC.
• Working with control lines that are shorter than 30 m.
• Devices are deployed in plants with low spatial elongation (observe the drop in voltage at
24 VDC!).