Safety Data - ABB ACH580-01 Hardware Manual

362 The Safe torque off function

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
U = 230 V
N
R1
3 e >99
R2
3 e >99
R3
3 e >99
R4
3 e >99
R5
3 e >99
R6
R7
3 e >99
R8
U = 400 V
N
R1
3 e >99
R2
R3
3 e >99
R4
R4
3 e >99
v2
R5
3 e >99
R6
3 e >99
R7
R8
3 e >99
R9
U = 600 V
N
R2
3 e >99
R3
3 e >99
R5
3 e >99
R7
R8
3 e >99
R9
• The following temperature profile is used in safety value calculations:
•
670 on/off cycles per year with ΔT = 71.66 °C
• 1340 on/off cycles per year with ΔT = 61.66 °C
• 30 on/off cycles per year with ΔT = 10.0 °C
PFH
PFD avg
(T = 20 a)
1
(%)
(T
1
(1/h)
2.79E-09 2.34E-05
2.79E-09 2.34E-05
2.59E-09 2.28E-05
2.59E-09 2.28E-05
3.94E-09 2.28E-05
3.92E-09 3.44E-05
2.55E-09 2.24E-05
2.62E-09 2.31E-05
2.59E-09 2.28E-05
2.59E-09 2.28E-05
3.92E-09 3.44E-05
4.22E-09 3.69E-05
2.67E-09 2.24E-05
2.61E-09 2.30E-05
2.59E-09 2.28E-05
4.25E-09 3.72E-05
PFD avg
MTTF D
(a)
= 2 a) (T = 5 a)
1
5.83E-05
2755
5.83E-05
2756
5.72E-05
2856
5.67E-05
2870
5.69E-05
2856
8.59E-05
9380
5.59E-05
2918
5.75E-05
2823
5.67E-05
2870
5.68E-05
2868
8.59E-05
9380
9.24E-05
8792
5.57E-05
2920
5.72E-05
2840
5.69E-05
2856
9.29E-05
6443
3AXD10000776787 A, 3AXD10000015777 P
DC
Cat. SC HFT CCF
(%)
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
≥90 3 3 1 80
T M
(a)
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20