Safety Data - ABB ACS880-37LC-0390A-7 Hardware Manual

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.
SFF
Frame
SIL PL
size
(%)
R8i 3 e >99
2×R8i 3 e >99
3×R8i 3 e >99
4×R8i 3 e >99
5×R8i 3 e >99
6×R8i 3 e >99
7×R8i 3 e >99
8×R8i 3 e >99
PFH
PFD
avg
(T = 20 a)
1
(T = 2 a)
1
(1/h)
5.0E-11 4.5E-07
6.2E-11 5.5E-07
7.3E-11 6.5E-07
8.4E-11 7.6E-07
9.5E-11 8.6E-07
1.1E-10 9.6E-07
1.2E-10 1.1E-06
1.3E-10 1.2E-06
The Safe torque off function 231
PFD MTTF DC
avg D
(T = 5 a) (a) (%)
1
1.1E-06 23970 ≥90
1.3E-06 16330 ≥90
1.6E-06 12390 ≥90
1.9E-06 9980 ≥90
2.1E-06 8360 ≥90
2.4E-06 7190 ≥90
2.6E-06 6310 ≥90
2.8E-06 5620 ≥90
T
M
Cat. SC HFT CCF
(a)
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3 3 1 80 20
3AXD10000078136 G