33
6 Set up with the display and adjustment module PLICSCOM
VEGAPULS 61 • Profibus PA
28444-EN-141215
– Move to the menu overview
– Confirm selected menu
– Edit parameter
– Save value
•
[->]
key to select:
– Menu change
– Select list entry
– Select editing position
•
[+]
key:
– Change value of the parameter
•
[ESC]
key:
– Interrupt input
– Jump to next higher menu
The sensor is adjusted via the four keys of the display and adjust-
ment module. The LC display indicates the individual menu items. The
functions of the individual keys are shown in the above illustration.
Approx. 10 minutes after the last pressing of a key, an automatic reset
to measured value indication is triggered. Any values not confirmed
with
[OK]
will not be saved.
6.4 Setup steps
Before starting the actual parameter adjustment of a Profibus PA
sensor, the address setting must first be carried out. You will find a
detailed description in the operating instructions manual of the display
and adjustment module or in the online help of PACTware or DTM.
As VEGAPULS 61 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 al-
ways 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, be-
cause the min./max. adjustment is always carried out without chang-
ing the product level. These settings can be made ahead of time
without the instrument having to be installed.
Caution:
If there is a separation of liquids with different dielectric constant in
the vessel, e.g. from condensation, VEGAPULS 61 can detect under
certain circumstances only the medium with the higher dielectric
constant.
Keep in mind that interfaces can cause faulty measurements.
Adjustment system
Address setting
Parameter adjustment
