ABB ACS580-01 drives, Hardware Manual

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206 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.
• The following temperature profile is used in safety value calculations:
• 670 on/off cycles per year with T = 71.66 °C
• 1340 on/off cycles per year with T = 61.66 °C
• 30 on/off cycles per year with 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.
Frame
size
IEC 61508 and IEC/EN 61800-5-2
SIL PFH
d
(1/h)
HFT SFF
(%)
T1
(a) PFD
R0 3 2.68E-09 1 99.8 20 2.23E-05
R1 3 2.68E-09 1 99.8 20 2.23E-05
R2 3 2.68E-09 1 99.8 20 2.23E-05
R3 3 2.68E-09 1 99.8 20 2.23E-05
R4 3 2.69E-09 1 99.8 20 2.23E-05
R5 3 7.09E-10 1 99.9 20 6.19E-06
R6 3 1.06E-09 1 99.8 20 9.26E-06
R7 3 1.06E-09 1 99.8 20 9.26E-06
R8 3 1.40E-09 1 99.7 20 1.09E-05
R9 3 1.40E-09 1 99.7 20 1.09E-05
Frame
size
EN ISO 13849-1 IEC/EN
62061
IEC 61511
PL CCF
(%)
MTTF
d
1
(a)
DC
2
(%)
Category SILCL SIL
R0 e 80 2938 >90 3 3 3
R1 e 80 2938 >90 3 3 3
R2 e 80 2938 >90 3 3 3
R3 e 80 2934 >90 3 3 3
R4 e 80 2934 >90 3 3 3
R5 e 80 16034 >90 3 3 3
R6 e 80 10876 >90 3 3 3
R7 e 80 10876 >90 3 3 3
R8 e 80 2490 >90 3 3 3
R9 e 80 2490 >90 3 3 3
1
100 years must be used for calculation of a safety loop. 3AXD00000586715.xls G
2
According to standard EN ISO 13849-1 table E.1