Safety Data - ABB ACS560 Hardware Manual

156 Safe torque off function
in a non-redundant manner, for example activating only one channel, will trigger the same
reaction.
See the drive firmware manual for the indications generated by the drive, and for details on
directing fault and warning indications to an output on the control board for external
diagnostics.
Any failures of the Safe torque off function must be reported to ABB.

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.
Frame
size
SIL
R0 3
R1 3
R2 3
R3 3
R5 3
R6 3
R7 3
R8 3
Frame size
PL
R0 e
R1 e
R2 e
R3 e
R5 e
R6 e
R7 e
R8 e
1)
A safety cycle must be calculated for 100 years.
2)
According to Table E.1 of EN ISO 13849-1.
• 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
IEC 61508 and IEC/EN 61800-5-2
SC PFH (1/h)
d
3 8.00E-09
3 8.00E-09
3 8.00E-09
3 2.68E-09
3 7.09E-10
3 1.06E-09
3 1.06E-09
3 1.4E-09
EN ISO 13849-1
CCF (%)
MTTF
d
(a)
80 2568
80 2568
80 2569
80 2938.192
80 16033.9
80 10876.08
80 10876.08
80 2490.467
HFT SFF(%)
1 98.7
1 98.7
1 98.7
1 99.8
1 99.9
1 99.8
1 99.8
1 99.7
1) 2)
Category
DC (%)
>90 3
>90 3
>90 3
>90 3
>90 3
>90 3
>90 3
>90 3
T1(2a) PFD
20 6.68E-05
20 6.68E-05
20 6.68E-05
20 2.8E-06
20 5.91,04E-05
20 8.85,04E-05
20 8.85,04E-05
20 9.04,04E-05
IEC/EN IEC 61511
62061
SILCL SIL
3 3
3 3
3 3
3 3
3 3
3 3
3 3
3 3