Circuit examples
124
Application Guide TwinSAFE
Hence:
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Notice
Category
This structure is possible up to category 4 at the most.
CAUTION
Implement a restart lock in the machine!
The restart lock is NOT part of the safety chain and must be implemented in the
machine!
Designation for each channel
3 years ≤ MTTF
< 10 years
10 years ≤ MTTF
< 30 years
30 years ≤ MTTF
≤ 100 years
DC < 60 %
60 % ≤ DC < 90 %
90 % ≤ DC < 99 %
99 % ≤ DC
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