Eaton easySafety Manual page 665

02/16 MN05013001Z EN
IEC 61508
PFD
PFH
1-channel architecture/HFT 0
EN ISO 13849-1
MTTF
d
T10
d
ES4P...
Relay output
K1 + K2 x c
K1 = 5.1 x 10
K2 = 1.5 x 10
K3 = 2.4 x 10
c = operating frequency
Transistor output
-5
5.29 x 10
1/h Relay output
K1 + K2 x c
K1 = 6.4 x 10
K2 = 2.6 x 10
K3 = 3.2 x 10
c = operating frequency
Transistor output
-10
6.57 x 10
Years Relay output
K1 + K2 x c
K1 = 1.7 x 10
K2 = 1.2 x 10
c = operating frequency
Transistor output
315
Years 10 % von MTTF
Technical data
2
+ K3 x c
-5
-6
-5
2
+ K3 x c
-10
-11
-10
1
-3
-3
d
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