SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Safety Recommendation
2011-09
13
Our experience has shown that the useful life time of a Pepperl+Fuchs product
can be higher
■ if there are no components with reduced life time in the safety path (like
electrolytic capacitors, relays, flash memory, opto coupler) which can produce
dangerous undetected failures and
■ if the ambient temperature is significantly below 60 °C.
Please note that the useful life time refers to the (constant) failure rate of the
device. The effective life time can be higher.
3.4 Installation and Commissioning
Installation has to consider all aspects regarding the SIL level of the loop. During
installation or replacement of the device the loop has to shut down. Devices have
to be replaced by the same type of devices.
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