Application document for functional safety STO, SS1 (ISO 13849-1)
Compact User Manual, 09/2016, A5E34871844AM
63
The safety function is split up into three partial systems:
Detect → Evaluate → Respond
As the Respond partial system comprises the E-Stop channel of the SINAMICS DCM and
the power switching device, this is again split up.
The assignment to the partial systems is color-coded in the following block diagram:
Orange = "Detect"
Green = "Evaluate"
Blue = "Respond" channel 1
Red = "Respond" channel 2
Gray = Feedback signals
List of abbreviations for the calculations:
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