ABB MAG-SM, Инструкционный бюллетень

Страница: 30 / 60

24
Electromagnetic Flowmeter Converter
Submenu/Parameter Entry Type Comments
from table/numeric
! Note:
For trouble free operation the function “Detector Empty Pipe”
should only be used for fluid conductivities above 20
S/cm and
meter sizes 3/8” [DN 10] and up. Not available for MAG-CS.
off = Empty pipe detector turned off
on = When the metering tube empties, a message is
displayed and the alarm contact is activated when the
alarm is set to “on”
off = No alarm output signal for “Empty Pipe” detection.
on = Alarm output signal activated for “Empty Pipe”.
Iout at empty pipe: output set to 0 %, Max or 3.6 mA.
Independent of the settings in the parameter “Alarm e.pipe”. Iout
is always set to its alarm value and an error message is always
displayed.
Set threshold value.
The converter displays the adjustment value in the 2nd line.The
pipeline must be filled. Set the adjustment potentiometer R813 to
+100 (pot located on the DEP module).
Empty pipeline, note new adjustment value, set calculated
threshold sensitivity value.
Exit the submenu
The forward totalizer can be reset by pressing the ENTER-key. If
the overflow counter > 0, Overflow
F Reset is displayed.
Note: If the totalizer function “Difference Totalizer” has been
selected, Difference Totalizer Reset is displayed.
Preset totalizer, difference totalizer
2nd display line = present value (e.g. after a converter exchange).
Overflow counter max. 250, 1 Overflow = totalizer value
>9,999,999 units (display is reset and overflow counter
incremented by 1).
Overflow Calculation Example
Overflow 012
12 x
10,000,000 Units
= 120,000,000 Units
+ 23,455 Present totalizer value
= 120,023,455 Units
See forward totalizer
See forward totalizer
Submenu
Detector e.pipe
µ
Ad
j . value Adj. value empty
2
-----------------------------------------------------------------------------------------------
ENTER
Detector e.pipe
on
Alarm e.pipe
on
Iout at e.pipe
0 %
Threshold
070
Adjust
Detector e.pipe
Adjust
+100
Submenu
Totalizer C/CE
ENTER
Totalizer
→
F
reset
→
Totalizer
→
F
23455 m3
Overflow
→
F
012
Totalizer
←
R
reset
Totalizer
←
R
625.000 m3