Grundfos DDI 222 Montage- Und Betriebsanleitung Seite 37

9.9.3 Setting the weighting
The setting options for weighting depend on the
selected current signal control. The parameters for
0-20 mA and for 4-20 mA are independent of one
another. The weighting parameters are modified and
saved according to the set operating mode.
Note
Select the current control operating mode used later
(0-20 mA / 4-20 mA) manually or via contact signal
before weighting. (Weighting of the control output for
manual control mode or contact signal control is the
same as current weighting 4-20 mA.)
Menu
Info
0-20 mA Analog
L:0.0
Flashing
0-20 mA Analog
H:20.0
Flashing
Menu
Info
Fig. 39 Setting the weighting
In the second function level, first enter the values for reference
pair L:
The display shows
• the current value for mA
min.
The default value is "L:0.0 mA" ("L:4.0 mA").
• "Analog"
• "0-20 mA" ("4-20 mA") (flashing).
Proceed as follows:
1. Use the "Up" and "Down" buttons to enter the minimum
current input mA between 0 mA (4 mA) and 20 mA
min.
(e.g. mA = 6 mA).
min.
2. Press the "Start/Stop" button.
– The current value for the mA
appears in the display (the default value is 0.000).
3. Use the "Up" and "Down" buttons to enter the desired value
for flow rate Q at mA
mA min.
Up
0-20 mA Analog
mA
6
mA
Down
Select value for
current input
mA 0-20 mA
min.
Up
0-20 mA Analog
mA
16 mA
Down
Select value for
current input mA
max.
> mA
min.
assigned flow rate Q
min. mA min.
(e.g. Q = 10 l/h).
min. mA min.
Up
0-20 mA Analog
Stop
l / h
0.000
Start
Down
Set the flow rate Q
0 - 0.999 l/h
1 - 9.9 l/h
10 - 99.9 l/h
100 - Q [l/h]
max.
Up
0-20 mA Analog
Stop
l / h
71.00
Start
Down
Set the flow rate Q
0 - 0.999 l/h
1 - 9.9 l/h
10 - 99.9 l/h
100 - Q [l/h]
max.
Now enter the values for reference pair H:
1. Press the "Start/Stop" button.
– The current value for mA
default value is "H:20.0 mA").
2. Use the "Up" and "Down" buttons to enter the maximum
current input mA > mA
max.
3. Press the "Start/Stop" button.
– The current value for the mA
appears in the display (the default value is Q
max.
4. Use the "Up" and "Down" buttons to enter the desired value
for flow rate Q
mA max.
• Press the "Menu/Info" button (confirm the setting and move on
to the next menu item), or
• press the "Start/Stop" button (confirm the setting and close the
second function level).
Stop
Start
0-20 mA Analog
l / h
10.00
mA min.
Stop
Start
0-20 mA Analog
l / h
40.00
mA max.
appears in the display (the
max.
(e.g. mA = 16 mA).
min. max.
assigned flow rate Q
max.
max.
at mA (e.g. Q = 40 l/h).
max. mA max.
mA
).
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