Technical Safety Functions - Eaton Ems Handbuch

5 Appendix

5.2 Technical safety functions

5.2 Technical safety functions
System conditions
Database for failure rates
System type
Applied standard
Beta factor
MTTF (at ambient air temperature 40 °C)
Safe switch off
(only for EMS-...-S-... devices)
Ambient Temperature
MTTFd
Shutdown time
λ [FIT]
sd
λ [FIT]
su
λ [FIT]
dd
λ [FIT]
du
SFF
DCS
DC current
PFH
Safety level
according to IEC 61508-1
according to ISO 13849-1
according to EN 954-1
Motor protection
Thermal overload (according
EN 60947-4-2 trip classes 10 or 10A)
Ambient temperature
MTTFd
λ [FIT]
sd
λ [FIT]
su
λ [FIT]
dd
λ [FIT]
du
SFF
DC
Safety level
according IEC 61508-1
56
￫
For additional temperatures, the safety data can be requested
from the manufacturer.
Elektronischer Motorstarter EMS/Electronic Motor Starter EMS 04/14 MN03407009Z-DE/EN www.eaton.com
Unit EMS-...-ROS-...
SN 29500
Type B, made up of sub-systems
IEC 61508
% 1
a 35.7
°C 40
a 420
ms 40 (EMS-...-2.4-...)
80 (EMS-...-9-...)
49
1818
269
2.7
% 99.8
% 2.6
% 99
-9
1/h 2.7 x 10
SIL 3
Cat. 3 PL e
Cat. 3
°C 40
a 316
0
1731
314
47.2
% 97.7
% 86.9
SIL 2
EMS-...-DOS-...
SN 29500
Type B, made up of sub-systems
IEC 61508
1
35.7
40
421
40 (EMS-...-2.4-...)
80 (EMS-...-9-...)
47
1582
269
2.4
99.8
2.9
99
-9
2.4 x 10
SIL 3
Cat. 3 PL e
Cat. 3
40
316
0
1550
314
47.2
97.9
86.9
SIL 2