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
24293
7.08E-05
2.83E-05
3.23E-09
98.8
e
3
R1i
R2i
R3i
R4i
20
80
1
3
3
≥90
16946
6.27E-05
2.51E-05
3.36E-09
96.7
e
3
R5i
20
80
1
3
3
≥90
6538
8.47E-05
3.39E-05
3.87E-09
99.0
e
3
R6i
R7i
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
20
80
1
3
3
≥90
5060
3.1E-06
1.3E-06
1.4E-10
>99
e
3
9×R8i
20
80
1
3
3
≥90
4610
3.3E-06
1.4E-06
1.5E-10
>99
e
3
10×R8i
3AXD10000041323 F, 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 A (frames R1i…R7i) or type B (frame R8i and multiples) 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.
The Safe torque off function 197
Summary of Contents for ACS880-107
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 107 inverter units Hardware manual ...
Page 2: ......
Page 4: ......
Page 10: ...10 ...
Page 64: ...2 4 5 6 7 8 11 10 3 a b a b b 1 5 a 64 Electrical installation ...
Page 69: ...Electrical installation 109 5 6 4 3 Electrical installation 69 11 ...
Page 70: ...7 a b d c 110 Electrical installation 7 8 8 8 9 9 70 Electrical installation ...
Page 75: ...2 11 b PE 10 7 5 6 8 a 360 grounding detail Electrical installation 75 11 ...
Page 89: ...With FDPI 02 modules OPEN TERMIN ATED 1 1 2 2 OPEN TERMINATED 3 Electrical installation 89 11 ...
Page 90: ...90 ...
Page 96: ...96 ...
Page 110: ...4 5 6 7 8 6 10 10 110 Maintenance ...
Page 118: ...2 3 7 9 a a c c c 6 8 b b d d 11 e e 118 Maintenance ...
Page 121: ...7 a b d c 110 Electrical installation 7 8 8 8 9 9 Maintenance 121 ...
Page 130: ...130 ...
Page 154: ...154 ...
Page 155: ...Circuit diagrams Refer to the circuit diagrams delivered with the unit 9 Circuit diagrams 155 ...
Page 156: ...156 ...
Page 159: ... Dimension drawing 400 mm wide cubicle R1i R4i 400 mm R6i R7i Dimensions and weights 159 ...
Page 161: ... Dimension drawing R8i without C128 or H353 bottom cable exit Dimensions and weights 161 ...
Page 162: ... Dimension drawing R8i without C128 or H353 top cable exit 162 Dimensions and weights ...
Page 163: ... Dimension drawing 2 R8i without C128 or H353 bottom cable exit Dimensions and weights 163 ...
Page 164: ... Dimension drawing 2 R8i without C128 or H353 top cable exit 164 Dimensions and weights ...
Page 165: ... Dimension drawing 3 R8i without C128 or H353 bottom cable exit Dimensions and weights 165 ...
Page 166: ... Dimension drawing 3 R8i without C128 or H353 top cable exit 166 Dimensions and weights ...
Page 167: ... Dimension drawing drive control unit DCU 300 mm Dimensions and weights 167 ...
Page 169: ...Inverter module cubicle with one R8i module top cable exit Dimensions and weights 169 ...
Page 182: ...182 ...
Page 200: ...200 ...
