Technical data
6.6 Safety Integrated
Power Module PM240P-2
68 Hardware Installation Manual, 06/2020, A5E37800827C AD
6.6 Safety Integrated
Standards STO fulfils the requirements of the following standards:
• SIL 3 according to IEC61508, part 1 to 3 (2010)
• PL e according to IEC61800-5-2 (2016)
• Category 3 according to ISO13849 part 1 (2015)
The function STO corresponds to stop category 0 according to
IEC60204 (2005)
Response time 20 ms
The response time of the Safe Torque Off function is the time between
selecting the function and the function becoming active.
Probability of failures
• Probability of failures per hour: PFH, PFH
D
= 50×10
-9
1/h
PFH according to IEC 61800-5-2, PFH
D
according to IEC 62061
• Mean probability of failure for a low demand rate of the safety func-
tion according to IEC 61508: PFD = 50×10
-5
Mission time 20 years
You may not operate converters with integrated safety functions for
longer than the mission time. The mission time starts when the device is
delivered. The mission time cannot be extended. This is the case even if
a service department checks the converter – or in the meantime, the
converter was decommissioned.
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