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You can map the PFH values of all Safety Integrated components from Siemens
using the "Safety evaluation" function in the TIA selection tool: Safety evaluation
www.siemens.com/safety-evaluation-tool)
10.7.4
Usage time
Description
You may not operate converters with Safety Integrated Functions for longer than 20 years. The
20 years starts when the device is delivered. The mission time cannot be extended. This is the
case even if a service department checks the converter – or in the meantime, the converter was
decommissioned.
10.7.5
Stop functions
10.7.5.1
Safe Torque Off (STO)
Overview
Figure 10-18
The Safe Torque Off (STO) function prevents the torque-generating supply of energy to the
motor and prevents the motor from unexpectedly starting.
SINAMICS S200 PROFINET servo drive system with SIMOTICS S-1FL2
Operating Instructions, 11/2023, FW V6.3, A5E51646752B AB
Overview STO
10.7 Safety Integrated (for S200 PN only)
Functions
(http://
401
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