LinMot C1150-DS-XC-0S, Руководство по установке

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Installation Guide C1100
Page 18 of 29 0185-1062-E_6V12_IG_Drives_C1100 NTI AG / LinMot
DC (Diagnostic Coverage) is high (99%) assuming that the state of the feedback contacts is checked after each
change of the state of the control contacts.
MTTF
d
mainly depends on the number of operations of the safety relays.
Example calculation of MTTF
d
:
Assuming that the safety function is requested every 20s on a machine running 24h per day and 7 days per
week.
B
10
= 10'000'000
B
10d
= 20'000'000 (according EN ISO 13849-1:2008 table C.1)
n
op
= (24h/Tag*365.25Tage/Jahr*3600s/h) / 20s = 1'577'880 operations per year
MTTF
d
= B10d / (0.1 x n
op
) = 126.75 years
(This has to be limited to 100years according the standard for further calculations)
= high (100 years)