Vega VEGAPULS 6X - First setup; Function test

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8 Functional safety (SIL)
VEGAPULS 6X • Two-wire 4 … 20 mA/HART
66190-EN-221107
TofulltherequirementsforSILconformity,werecommendcarrying
outtherstsetupviathefunction"Verify and lock (inclusive setup
assistant)". This function is available in the adjustment app as well as
PACTware/DTM (see previous chapter " Safety concept of the param-
eter adjustment, tools for adjustment and parameterisation").
8.5.2 Setup process
AparameterchangewithSILqualiedinstrumentsmustalwaysbe
carried out as follows:
•
Unlock adjustment
•
Change parameters
•
Function test, if necessary
•
Lockadjustmentandverifymodiedparameters
The process is run by the setup wizard in the adjustment app or
PACTware/DTM.
The meaning and handling of the individual steps are described in the
chapter " Security concept for parameter adjustment".
Information:
The central part of the initial setup is the function test. When running
through the setup assistant, the device decides on the basis of its
evaluation results which options of the function test are available in
the individual case.
TheVEGAPULS6Xbasicallyoersthefollowingfunctiontestop-
tions:
Option of the func-
tion test
Medium Level
Without medium Empty vessel
With medium Current level
With medium Controllingdenedlev-
els
The individual options are described in the following chapter.
8.6 Function test
8.6.1 Function test without medium - empty vessel
Here, the user must start a measurement to determine the echo qual-
ity in an empty vessel. Based on these data, the device calculates
over the entire measuring range whether an adequate output signal is
availableforeverylevelwhenllingwithmediumlater.
Operating sequence
Function test
Description