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 cycle.
The safety monitoring cycle lasts a minimum of 4 ms. Increasing the current controller cycle
(p0115) also increases the safety monitoring cycle.
Data cross-check
A cyclic cross-check of the safety-related data in the two monitoring channels is carried out.
If any data is inconsistent, a stop response is triggered with any Safety function.
Overview of important parameters (see SINAMICS S120/S150 List Manual)
• r9780
• r9880
9.2.2

Supported functions

The safety functions of the SINAMICS S drive system meet the following requirements:
● Category 3 according to DIN EN ISO 13849-1
● Performance level (PL) d according to DIN EN ISO 13849-1
● Safety integrity level 2 (SIL 2) according to IEC 61508
● EN 61800-5-2
In addition, most of the safety functions of the SINAMICS S have been certified by
independent institutes. A list of currently certified components is available on request from
your local Siemens office.
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
SI monitoring cycle (Control Unit)
SI monitoring cycle (Motor Module)
Safety Integrated basic functions
9.2 General information
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