39
6 Set up with the display and adjustment module PLICSCOM
VEGAPULS 66 • 4 … 20 mA/HART - two-wire
28438-EN-170927
2. Select the menu item "
Service
" with
[->]
and confirm with
[OK]
.
Now the menu item "
False signal suppression
" is displayed.
3. Confirm "
False signal suppression - Change now
" with
[OK]
and
select in the below menu "
Create new
". Enter the actual distance
from the sensor to the product surface. All false signals in this
area are detected by the sensor and saved after confirming with
[OK]
.
Note:
Check the distance to the product surface, because if an incorrect
(too large) value is entered, the existing level will be saved as a false
signal. The level would then no longer be detectable in this area.
The menu item "
Extended setting
" offers the possibility to optimise
VEGAPULS 66 for applications in which the level changes very
quickly. To do this, select the function "
Quick level change > 1 m/min.
".
Extended setting
quick level change > 1 m/min.
Note:
Since with the function "
Quick level change > 1 m/min.
" the genera-
tion of an average value of the signal processing is considerably
reduced, false reflections by agitators or vessel installations can
cause measured value fluctuations. A false signal suppression is thus
recommended.
In the menu item "
Current output
" you determine the behaviour of the
current output during operation and in case of failure. The following
options are available:
Current output
Characteristics
4 … 20 mA
20 … 4 mA
Failure mode
2)
Hold value
20.5 mA
22 mA
< 3.6 mA
Min. current
3)
3.8 mA
4 mA
Max. current
4)
20 mA
20.5 mA
The values in bold font represent the data of the factory setting.
Service - Extended set-
ting
Service - Current output
2)
Value of the current output in case of failure, e.g. if no valid measured value is
delivered.
3)
This value is not underrun during operation.
4)
This value is not exceeded during operation.
