Lenze i750 - Safety-Related Characteristics Extended Safety

Safety-related char
acteriscs Extended Safety
The achievable risk r
educons (PL/SIL) also depend on the motor/encoder
combinaon used.
Match the values given here with the values for the motor/encoder
combinaons:
4Motor-encoder combinaons ^ 114
Safety-related characterisc values for all safety funcons except Safe Brake Control (SBC) for drive systems with
motors with resolvers and SinCos encoders
Safety-related characteriscs according to EN IEC 61508, Part 1‑7 and EN 62061
Specicaon Value Comment
Safety Integrity Level SIL 3
PFH [1/h] < 1 E−09 < 1 % of SIL 3
PFD
avg
(T)
< 1 E−04 < 10 % of SIL 3 aer T = 20 years
SFF 99 %
Proof test interval T 20 years Mission me
Safety-related characteriscs according to EN ISO 13849‑1
Specicaon Value Comment
Performance Level e
Category 4
MTTF
d
High > 250 years
Mean diagnosc coverage DC
avg
High 95 %
Characterisc safety values for all safety funcons except Safe Brake Control (SBC) for drive systems with motors
with all HIPERFACE DSL
®
encoders (OCT)
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] < 5 E−09 < 0.5 % of SIL 2
PFD
avg
(T)
< 5 E−04 < 5 % of SIL 2 aer T = 20 years
SFF > 90 %
Proof test interval T 20 years Mission me
Safety-related characteriscs according to EN ISO 13849‑1
Specicaon Value Comment
Performance Level d
Category 3
MTTF
d
High > 300 years
Mean diagnosc coverage DC
avg
Medium > 90 %
Basics of the safety-related characteriscs
Basics Value Comment
Source of failure rates SN 29500
When no values from the component manufacturers
were available.
Average max. ambient temperature 60 °C
Funconal sa
fety
Technical data
Safety-related characteriscs Extended Safety
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