ABB ACS880-07 Hardware Manual page 221

Frame
SIL
U = 525...690 V
1
R6 to R9 3
R10, R11 3
Frame
PL
U = 380...500 V
1
R6 e
R7 e
R8 e
R9 e
R10 e
R11 e
U = 525...690 V
1
R6 to R9 e
R10, R11 e
* according to Table E.1 in EN/ISO 13849-1
•
This temperature profile is used in safety value calculations:
•
670 on/off cycles per year with
•
1340 on/off cycles per year with
•
30 on/off cycles per year with
•
32 °C board temperature at 2.0% of time
•
60 °C board temperature at 1.5% of time
•
85 °C board temperature at 2.3% of time.
•
The safety data is calculated for redundant use, and does not apply if both channels
are not used.
•
The STO is a type A safety component as defined in IEC 61508-2.
•
Relevant failure modes:
•
The STO trips spuriously (safe failure)
•
The STO does not activate when requested
A fault exclusion on the failure mode "short circuit on printed circuit board" has been
made (EN 13849-2, table D.5). The analysis is based on an assumption that one
failure occurs at one time. No accumulated failures have been analyzed.
•
STO reaction time (shortest detectable break): 1 ms
•
STO response time: 2 ms (typical), 5 ms (maximum)
•
Fault detection time: Channels in different states for longer than 200 ms
•
Fault reaction time: Fault detection time + 10 ms
•
STO fault indication (parameter 31.22) delay: < 500 ms
•
STO warning indication (parameter 31.22) delay: < 1000 ms
SC PFH
d
(1/h)
3 3.84E-09 (3.84 FIT)
3 3.91E-09 (3.91 FIT)
EN/ISO 13849-1
CCF MTTF
d
(%)
(Years)
80 3847
80 3847
80 1374
80 1374
80 18774
80 18774
80 1374
80 18774
T = 71.66 °C
T = 61.66 °C
T = 10.0 °C
Safe torque off function 221
IEC 61508
HFT SFF
(%)
1 95.04
1 99.63
DC* Cat.
(%)
> 90 3
> 90 3
> 90 3
> 90 3
> 90 3
> 90 3
> 90 3
> 90 3
Lifetime PFD
(Years) (T1 = 2 a)
20 1.56E-4
20 3.43E-5
IEC 62061 IEC 61511
SILCL SIL
3 3
3 3
3 3
3 3
3 3
3 3
3 3
3 3