Tüv Certificate - ABB ACS580-04 Hardware Manual

238 The Safe torque off function
Term or Reference
abbreviation
SIL IEC 61508
STO IEC/EN 61800-5-2
T IEC 61508-6
1
T EN ISO 13849-1
M
λ IEC 61508-6
Diag_d
λ IEC 61508-6
Diag_s
TÜV certificate
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Description
Safety integrity level (1...3)
Safe torque off
Proof test interval. T is a parameter used to define the
1
probabilistic failure rate (PFH or PFD) for the safety function or
subsystem. Performing a proof test at a maximum interval of T
is required to keep the SIL capability valid. The same interval must
be followed to keep the PL capability (EN ISO 13849) valid.
See also section Maintenance.
Mission time: the period of time covering the intended use of the
safety function/device. After the mission time elapses, the safety
device must be replaced. Note that any T
be regarded as a guarantee or warranty.
Dangerous failure rate (per hour) of the diagnostics function of
STO
Safe failure rate (per hour) of the diagnostics function of STO
1
values given cannot
M