Pepperl+Fuchs SIL KFD0-RSH-1, Руководство по безопасности

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Safety Manual SIL KFD0-RSH-1(-Y2), KFD2-SL-4
Proof Test
4 Proof Test
4.1 Proof Test Procedure
According to IEC 61508-2 a recurring proof test shall be undertaken to reveal
potential dangerous failures that are otherwise not detected by diagnostic test.
The functionality of the subsystem must be verified at periodic intervals
depending on the applied PFD
avg
in accordance with the data provided in this
manual. see chapter 2.4.
It is under the responsibility of the operator to define the type of proof test and the
interval time period.
The ancillary equipment required:

KFD0-RSH-1(-Y2)
• A digital multimeter (without special accuracy) will be used as ohmmeter
(mid range recommended) to check the relay outputs. Closed contacts
are shown with 0

(low impedance), open contacts are shown with OL
(overload/high impedance).
• Power supply set at nominal voltage of 24 V DC

KFD2-SL-4
• A digital multimeter (without special accuracy) will be used as voltmeter
to check switching of the transistor output. It needs a measuring range of
at least 24 V DC.
• Power supply set at nominal voltage of 24 V DC
• A load resistor of 1 k

±
10 % is necessary.
Safety Manual SIL KFD0-RSH-1(-Y2), KFD2-SL-4