Lenze i750 - Page 156

Safety-related char
acterisc values for the Safe Brake Control (SBC) safety funcon independent of the
parameterized motor encoder system
Safety-related characteriscs according to EN IEC 61508, Part 1‑7 and EN 62061
Specicaon Value Comment
Safety Integrity Level SIL 2
PFH [1/h] < 1 E−08 < 1 % of SIL 2
PFD
a
vg
(T)
< 1 E−03 < 10 % of SIL 2 aer T = 20 years
SFF 99 %
Proof test interval T 20 years Mission me
Safety-related char
acteriscs according to EN ISO 13849‑1
Specicaon Value Comment
Performance Level d
Category 2
MTTF
d
High > 230 years
Mean diagnosc c
overage DC
avg
High 95 %
Basics of the safety-related char
acteriscs
Basics Value Comment
Source of failure rates SN 29500
When no values from the component manufacturers
w
ere available.
Average max. ambient temperature 60 °C
Funconal sa
fety
Technical data
Safety-related characteriscs Extended Safety
156