Page 794 - Motor_protection_and_control_Manual_motor_starters_ contactors

HF0.6, HF2.4, HF9 electronic compact starters

Technical data

Safety related data
Type HF-DOLE/ROLE
Standards IEC/EN 60947-1, IEC/EN 60947-4-2, IEC/EN 61508, IS0 13849
Safe shut down for ambient temperature 40°C … 60°C
Safety integrity level acc. to IEC 61508-1 SIL 3
Performance level Up to e
Mean time to failure (MTTF) acc. to IEC60050-191-12-07 DOLE: 43 years
ROLE: 39.3 years
Mean time to dangerous failure, motor protection 447 years
Mean time to dangerous failure, safe shutdown DOLE: 518 years
ROLE: 517 years
Failure in time Safe, detectabled λ sd DOLE: 543 FIT
ROLE: 664 FIT
Safe, undetectable λ su DOLE: 852 FIT
ROLE: 968 FIT
218 FIT
Dangerous, detectable λ dd
DOLE: 2.4 FIT
Dangerous, undetectable λ du
ROLE: 2.67 FIT
Safe failure fraction (SFF) DOLE: 99.85%
ROLE: 99.86%
Diagnostic coverage (DC) DOLE: 98.91%
ROLE: 98.79%
Probability of dangerous failure per hour (PFH) DOLE: 2.4
ROLE: 2.67
Motor overload protection for ambient temperature 40°C … 60°C
Safety integrity level acc. to IEC 61508-1 SIL 3
Performance level Up to e
Mean time to failure (MTTF) acc. to IEC60050-191-12-07 DOLE: 43 years
ROLE: 39.3 years
Mean time to dangerous failure, safe shutdown DOLE: 518 years
ROLE: 517 years
Failure in time Safe, detectabled DOLE: 517 FIT
ROLE: 637 FIT
Safe, undetectable DOLE: 809 FIT
10 Dangerous, detectable ROLE: 870 FIT
239 FIT
Dangerous, undetectable 17 FIT
Safe failure fraction (SFF) DOLE: 98.92%
ROLE: 99.03%
Diagnostic coverage DOLE: 98.91w
ROLE: 98.79%

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