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Safety functions integrated in the drive
4
4.1
Overview of Safety Integrated Functions
In comparison to standard drive functions, safety functions have an especially low error rate.
Performance level (PL) and safety integrity level (SIL) of the corresponding standards are a
measure of the error rate.
As a consequence, the safety functions are suitable for use in safety-related applications to
minimize risk. An application is safety-related if the risk analysis of the machine or the system
indicates a special hazard potential in the application.
Safety Integrated ("drive-integrated") means that the safety functions are integrated in the
converter and can be executed without requiring additional external components.
You make the settings for these Safety Integrated Functions via the web server. Take the
instruction in the following section into account:
Safety settings in the Web server (Page 135)
Overview of Safety Integrated Functions
The Safety Integrated Functions comply with:
● Safety Integrity Level (SIL) 2 according to DIN EN 61508
● Category 3 according to DIN EN ISO 13849‑1
● Performance level (PL) d according to DIN EN ISO 13849-1
The Safety Integrated Functions correspond to the functions according to EN 61800‑5‑2.
Basic Functions
These functions are part of the standard scope of the converter and can be used without
requiring an additional license. The Basic Functions consist of the following Safety Integrated
Functions:
● Safe Torque Off (STO)
● Safe Brake Control (SBC)
● Safe Stop 1, time-controlled (SS1)
SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA
57
Summary of Contents for SIMOTICS S-1FK2
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