Supported Functions - Siemens SINAMICS S120 Function Manual

Switch-off signal paths
Two independent switch-off signal paths are available. All switch-off signal paths are low
active, thereby ensuring that the system is always switched to a safe state if a component
fails or in the event of an open circuit.
If a fault is discovered in the switch-off signal paths, the "Safe Torque Off" function is
activated and a system restart inhibited.
Monitoring cycle
The safety-relevant drive functions are executed cyclically in the monitoring clock cycle.
The safety monitoring clock cycle lasts a minimum of 4 ms. Increasing the basic DRIVE-
CLiQ sampling time (r0110) also increases the safety monitoring clock cycle.
Data cross-check
A cyclic cross-check of the safety-related data in the two monitoring channels is carried out.
If any data are inconsistent, a stop response is triggered with any Safety function.
Overview of parameters (see SINAMICS S120/S150 List Manual)
● r9780 SI monitoring clock cycle (Control Unit)
● r9880 SI monitoring clock cycle (Motor Module)
Comparison of function names
Table 9- 1
old
Abbreviation
SH
SGA
SGE
9.1.2

Supported functions

The functions mentioned here comply with IEC 61508, performance level d (PL d) to ISO
13849-1 (formerly EN 954-1), and IEC 61800-5-2.
The following Safety Integrated (SI) functions are available:
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Comparison of safety function names old <-> new
Name
Safe standstill
Safety-related output
Safety-related input
Safety Integrated basic functions
9.1 General information
new according to IEC 61800-5-2
New abbreviation New name
STO Safe Torque Off
F-DO Failsafe Digital Output
F-DI Failsafe Digital Input
359