Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual page 32

ctrlX SAFETY "SafeMotion"
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Safety characteristics of the safety system
Table 9: Variable description to calculate PFH for a safety zone
Variable Value
PFH See manufacturer's specifica-
selection_discrete
tion
PFH See manufacturer's specifica-
compact safety con-
tion
troller
PFH See
axis_x
component of an axis
Legend:
PFH=(1-DC)/MTTFD ®
1):
Bosch Rexroth AG
⮫ Calculating the PFH
Description
Enter the sum of the individual PFH values of the
switches or safety devices involved in the selec-
tion. No distinction is made as to which safety
functions are selected in the drive.
PFH value of the safety control.
This value depends on the parameterized safety
functions and has to be calculated for each axis
of the safety zone.
R911404905, Edition 02