Safety data
The safety data for the Safe torque off function is given below.
Note:
The safety data is calculated for redundant use, and does not apply if both STO
channels are not used.
T
M
(a)
CCF
HFT
SC
Cat.
DC
(%)
MTTF
D
(a)
PFD
avg
(T
1
= 5 a)
PFD
avg
(T
1
= 2 a)
PFH
(T
1
= 20 a)
(1/h)
SFF
(%)
PL
SIL/
SILCL
Frame size
20
80
1
3
3
≥90
23970
1.1E-06
4.5E-07
5.0E-11
>99
e
3
R8i
20
80
1
3
3
≥90
16330
1.3E-06
5.5E-07
6.2E-11
>99
e
3
2×R8i
20
80
1
3
3
≥90
12390
1.6E-06
6.5E-07
7.3E-11
>99
e
3
3×R8i
20
80
1
3
3
≥90
9980
1.9E-06
7.6E-07
8.4E-11
>99
e
3
4×R8i
20
80
1
3
3
≥90
8360
2.1E-06
8.6E-07
9.5E-11
>99
e
3
5×R8i
20
80
1
3
3
≥90
7190
2.4E-06
9.6E-07
1.1E-10
>99
e
3
6×R8i
20
80
1
3
3
≥90
6310
2.6E-06
1.1E-06
1.2E-10
>99
e
3
7×R8i
20
80
1
3
3
≥90
5620
2.8E-06
1.2E-06
1.3E-10
>99
e
3
8×R8i
3AXD10000078136 F
• The following temperature profile is used in safety value calculations:
• 670 on/off cycles per year with Δ
T
= 71.66 °C
• 1340 on/off cycles per year with Δ
T
= 61.66 °C
• 30 on/off cycles per year with Δ
T
= 10.0 °C
• 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 STO is a type B 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 response times:
• STO reaction time (shortest detectable break): 1 ms
• STO response time: 2 ms (typical), 25 ms (maximum)
• Fault detection time: Channels in different states for longer than 200 ms
• Fault reaction time: Fault detection time + 10 ms
• Indication delays:
• STO fault indication (parameter
31.22
) delay: < 500 ms
• STO warning indication (parameter
31.22
) delay: < 1000 ms
The Safe torque off function 97
Содержание ACS880-107LC
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 107LC inverter units Hardware manual ...
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Страница 38: ...4 a 8 b 16 18 PE PE 10 38 Electrical installation ...
Страница 39: ...13 12 21 Electrical installation 39 11 ...
Страница 44: ...With FDPI 02 modules OPEN TERMINATED 1 1 2 2 OPEN TERMINATED 3 44 Electrical installation ...
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Страница 115: ...Above Sides Front in mm in mm in mm 9 85 250 0 0 59 1500 Technical data 115 ...
Страница 124: ...124 ...
Страница 130: ...Inverter module cubicle with two R8i modules bottom cable exit 130 Dimensions ...
Страница 131: ...Inverter module cubicle with three R8i modules bottom cable exit Dimensions 131 ...
Страница 132: ... Units with common motor terminal cubicle H359 Cubicle width 300 mm bottom cable exit 132 Dimensions ...
Страница 133: ...Cubicle width 300 mm top cable exit Dimensions 133 ...
Страница 134: ...Cubicle width 400 mm bottom cable exit 134 Dimensions ...
Страница 135: ...Cubicle width 400 mm top cable exit Dimensions 135 ...
Страница 136: ...Cubicle width 600 mm bottom cable exit 136 Dimensions ...
Страница 137: ...Cubicle width 600 mm top cable exit Dimensions 137 ...
Страница 138: ...138 ...
