Vega VEGAFLEX 67 (-40…+150°C) 4 … 20 mA_HART four-wire Bedienungsanleitung PDF herunterladen (Seite 23)

6.4 Setup steps

After connecting VEGAFLEX 67 to power supply or after a voltage

recurrence, the instrument carries out a self-check for approx. 30

seconds:

l Internal check of the electronics

l Indication of the instrument type, the ﬁrmware as well as the

sensor TAG s (sensor designation)

l Output signal jumps brieﬂy (approx. 10 seconds) to the set fault

current

Then the corresponding current is outputted to the cable (the value

corresponds to the actual level as well as the settings already carried

out, e.g. factory setting).

In HART-Multidrop mode (several sensors on one input) the address

must be set before continuing with the parameter adjustment. You will

ﬁnd a detailed description in the operating instructions manual

"Indicating and adjustment module" or in the online help of PACTware

or DTM.

HART mode

Standard

Address 0

As VEGAFLEX 67 is a distance measuring instrument, the distance

from the sensor to the product surface is measured. To have the real

product level displayed, an allocation of the measured distance to the

percentage height must be made. To carry out this adjustment, the

distance is entered with full and empty vessel. If these values are not

known, an adjustment with the distance values, e.g. 10 % and 90 % is

also possible. Starting point for these distance speciﬁcations is always

the seal surface of the thread or ﬂange. With these settings, the real

level is calculated. Furthermore the operating range of the sensor is

limited from maximum to the required range.

The real product level during this adjustment is not important, because

the min./max. adjustment is always carried out without changing the

product level. These settings can be made ahead of time without the

instrument having to be installed.

In the main menu item "Basic adjustment", the individual submenu

items should be selected one after the other and provided with the

correct parameter values.

Start your parameter adjustment with the following menu items of the

basic adjustment:

Proceed as follows:

Switch-on phase

Address setting HART-

Multidrop

Parameter adjustment

Carry out min. adjust-

ment

VEGAFLEX 67 • 4 … 20 mA/HART - four-wire 23

6 Set up with the indicating and adjustment module PLICSCOM

31854-EN-120329

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