4 Appendix
4.2 Technical safety functions
78
Electronic motor starter EMS-...-SWD
12/18 MN034002ZU-DE/EN
www.eaton.com
4.2 Technical safety functions
System condition
EMS-ROS-…-SWD
EMS-DOS-…-SWD
Database for failure rates
SN 29500
SN 29500
System type
B
B
Applied standard
IEC 61508
IEC 61508
Safe shut-down
Architecture
1oo2
1oo2
Ambient air temperature
40 °C
40 °C
MTTF
d
167 years
167 years
Shutdown time
200 ms
200 ms
λ
sd
[FIT]
0
0
λ
su
[FIT]
1321
1321
λ
dd
[FIT]
685
685
λ
du
[FIT]
0.1
0.1
SFF
99 %
99 %
DC current
99 %
99 %
PFH
0.1
0.1
PFD
avg
6 months
0.5 x 10
-6
0.5 x 10
-6
36 months
3.0 x 10
-6
3.0 x 10
-6
Safety level
according to IEC 61508-1
SIL 3
SIL 3
according to ISO 13849-1
Cat. 3 PL e
Cat. 3 PL e
according to EN 954-1
Cat. 3
Cat. 3
Motor protection
Thermal overload
(according to EN 60947-4-2,
Tripping class 10 or 10A)
Architecture
1oo1
1oo1
Ambient air temperature
40 °C
40 °C
MTTF
d
192 years
192 years
λ
sd
[FIT]
0
0
λ
su
[FIT]
1061
1061
λ
dd
[FIT]
577
577
λ
du
[FIT]
18
18
SFF [%]
98
98
DC [%]
96
96
PFD
avg
6 months
0.08 x 10
-3
0.08 x 10
-3
36 months
0.47 x 10
-3
0.47 x 10
-3
Safety level
SIL 2
SIL 2