Hardware Manual

Safe Torque off function 239
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 unit for
external diagnostics.
Any failures of the Safe torque off function must be reported to ABB.
Safety data (SIL, PL)
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
channels are not used.
Frame IEC 61508 and EN/IEC 61800-5-2
SIL/
SILCL
SC PL SFF
(%)
PFH
(T1 = 20 a)
(1/h)
PFD
(T1 = 2 a)
MTTF
d
(a)
DC*
(%)
Cat. HFT CCF
(%)
Life-
time
(a)
U
N
= 230 V
R1 3 3 e 99.67 2.33E-09
(2.33 FIT)
4.58E-7 7321 >
90 3 1 80 20
R2 3 3 e 99.67 2.33E-09
(2.33 FIT)
4.58E-7 7321 >
90 3 1 80 20
R3 3 3 e 99.68 2.33E-09
(2.33 FIT)
3.69E-7 9093 >
90 3 1 80 20
R4 3 3 e 99.66 2.43E-09
(2.43 FIT)
5.85E-7 5731 >
90 3 1 80 20
R5 3 3 e 99.66 2.43E-09
(2.43 FIT)
5.85E-7 5731 >
90 3 1 80 20
R6 3 3 e 99.65 2.44E-09
(2.44 FIT)
8.70E-7 3847 >
90 3 1 80 20
R7 3 3 e 99.65 2.44E-09
(2.44 FIT)
8.70E-7 3847 >
90 3 1 80 20
R8 3 3 e 99.65 2.44E-09
(2.44 FIT)
8.70E-7 3847 >
90 3 1 80 20
U
N
= 400 V, U
N
= 500 V
R1 3 3 e 99.67 2.33E-09
(2.33 FIT)
4.58E-7 7321 >
90 3 1 80 20
R2 3 3 e 99.67 2.33E-09
(2.33 FIT)
4.58E-7 7321 >
90 3 1 80 20
R3 3 3 e 99.68 2.33E-09
(2.33 FIT)
3.69E-7 9093 >
90 3 1 80 20
R4 3 3 e 99.66 2.43E-09
(2.43 FIT)
5.85E-7 5731 >
90 3 1 80 20
R5 3 3 e 99.66 2.43E-09
(2.43 FIT)
5.85E-7 5731 >
90 3 1 80 20
R6 3 3 e 99.65 2.44E-09
(2.44 FIT)
8.70E-7 3847 >
90 3 1 80 20