Lamtec F200K2 IR-1, Руководство по безопасности

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2 General Safety Instructions
2.7 Life time
The mission time or life time of the device is 10 years.
In accordance with the DIN EN 61508 the life time is 8 to 12 years under normal operating
conditions, because electronic components are assumed to have a constant failure rate
λ
through this period. After that period the failure rates of the components will increase
significantly with time (see "bathtub curve" for electronic components).
The life time of 10 years does not mean, that the device will become unsafe after this time
immediately. The extensive diagnosis of safety related components remains still active. DIN
EN 61508-2:2011 Note N3 gives the hint, that appropriate measures taken by the
manufacturer and plant operator can extend the useful lifetime.
The burner control is designed for 250.000 switching cycles with nominal switch loads. For
normal operation this is equal to 10 years of operation
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. For industrial use with reduced loads
and a lower ambient temperature more switching cycles are possible.
Nevertheless, when the device stays in operation after the end of the life time, LAMTEC does
not guarantees the proper function and all calculated safety values become invalid.
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Base on the switching cycles and the corresponding lifetime are EN 13611, DIN EN 298 and an overview from the
European Control Manufacturers Association (Afecor, www.afecor.org)