Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung PDF herunterladen (Seite 28)

6 Functional safety (SIL)

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

43387-EN-131119

All parameters changed by the operator are marked automatically so

thattheycanveriedinthenextstep.

ForthevericationthePINmustbeenteredrstandacomparisonof

twocharacterstringsmustbecarriedout.Theusermustconrmthat

both character strings are identical, this is used to check the charac-

terrepresentationandthecommunicationchannels.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,

whichmustallbeconrmed.Afterthisprocessisnished,theinstru-

ment will be locked automatically and the safety function is guaran-

teed again.

Warning:

If the described process was not carried out completely or correctly

(e.g. interruption or voltage loss), the instrument remains in the

released and hence unsafe status.

Warning:

In case of a reset to basic settings, all safety-relevant parameters will

also be reset to default. Therefore all safety-relevant parameters must

be checked or readjusted.

Change parameter

Verify parameters/Lock

adjustment

Incomplete process

Instrument reset

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Vega SOLITRAC 31 4 … 20 mA_HART - four-wire With SIL qu Bedienungsanleitung Seite 28