46
6 Set up the sensor with the display and adjustment module
VEGADIF 85 • Profibus PA
53569-EN-230814
5. Save settings with
[OK]
and move with
[ESC]
and
[->]
to the max.
adjustment.
The min. adjustment for interface is thus finished.
Proceed as follows:
1. Select the menu item "
Setup
" with
[->]
and confirm with
[OK]
.
Now select with
[->]
the menu item "
Max. adjustment
" and con
-
firm with
[OK]
.
2. Edit the percentage value with
[OK]
and set the cursor to the
requested position with
[->]
.
3. Set the requested percentage value with
[+]
and save with
[OK]
.
The cursor jumps now to the height value.
4. Enter the max. height of the interface corresponding to the per
-
centage value.
The max. adjustment for interface is finished.
A linearization is necessary for all applications in which the measured
process variable does not increase linearly with the measured value.
This applies for example to the flow measured via the differential
pressure or the vessel volume measured via the level. Correspond
-
ing linearization curves are preprogrammed for such cases. They
represent the correlation between the measured value percentage
and process variable. The linearization applies to the measured value
indication and the current output.
Caution:
Note the following, if the respective sensor is used as part of an over
-
fill protection system according to WHG:
If a linearisation curve is selected, the measuring signal is no longer
necessarily linear to the filling height. This must be considered by the
user especially when setting the switching point on the limit signal
transmitter.
Since the parameter adjustment of the Function Block 1 (FB1) is very
comprehensive, it was divided into various submenu items.
In menu item "
Channel
" you determine the input signal for further
processing in AI FB 1.
Max. adjustment interface
Linearisation
AI FB1
AI FB1 - Channel