Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung PDF herunterladen (Seite 56)

7 Set up with the display and adjustment module

FIBERTRAC 31 • 4 … 20 mA/HART - four-wire

43386-EN-131119

Dry run protection = the relay will deenergise (safe condition) when

the min. level is reached.

Make sure that you have selected the correct characteristics. See

menu item "Setup/Current output mode".

With this menu item you safeguard the sensor parameters against

unauthorizedorunintentionalmodications.

To avoid possible errors during parameterization in a non-safe user

environment,avericationprocedureisusedthatmakesitpossible

to detect parameterization errors reliably. For this, safety-relevant

parametersmustbeveriedbeforetheyarestoredinthedevice.In

normal operating condition, the instrument is also locked against

parameter changes through unauthorized access.

For this reason, the instrument is shipped in locked conditon. The PIN

in the delivery status is "0000".

Afterachange,allsafety-relevantparametersmustbeveried.For

this purpose, a character string comparison must be carried out. This

is used to check the character respresentation and the communica-

tion channels.

Conrmifthetwocharacterstringsareidentical.Thevericationtexts

are provided in German and with all other menu languages in English.

Inasecondstep,allmodiedsafety-relevantparametersarelisted.

Conrmthemodiedvalues.

If the described process of parameter adjustment was run through

completely and correctly, the instrument will be locked and hence

ready for operation.

Otherwise the instrument remains in the released and hence unsafe

condition.

Lock setup - adjustment

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Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung Seite 56