Lamtec F200K2 IR-1 Safety Manual
Also see for F200K Series: ManualQuick reference
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Contents
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102 General Safety Instructions2.7 Life timeThe 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 operatingconditions, because electronic components are assumed to have a constant failure rateλ through this period. After that period the failure rates of the components will increasesignificantly 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 timeimmediately. The extensive diagnosis of safety related components remains still active. DINEN 61508-2:2011 Note N3 gives the hint, that appropriate measures taken by themanufacturer and plant operator can extend the useful lifetime.The burner control is designed for 250.000 switching cycles with nominal switch loads. Fornormal operation this is equal to 10 years of operation 5 . For industrial use with reduced loadsand a lower ambient temperature more switching cycles are possible.Nevertheless, when the device stays in operation after the end of the life time, LAMTEC doesnot guarantees the proper function and all calculated safety values become invalid.5 Base on the switching cycles and the corresponding lifetime are EN 13611, DIN EN 298 and an overview from theEuropean Control Manufacturers Association (Afecor, www.afecor.org) |
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