Grundfos DDI 150-4, Installation And Operating Instructions Manual

Page: 37 / 632

English (GB)
37
9.9.3 Setting the weighting
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
min.
between 0 mA (4 mA) and 20 mA
(e.g. mA
min.
= 6 mA).
2. Press the "Start/Stop" button.
– The current value for the mA
min.
assigned flow rate Q
mA min.
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
mA min.
at mA
min.
(e.g. Q
mA min.
= 10 l/h).
Now enter the values for reference pair H:
1. Press the "Start/Stop" button.
– The current value for mA
max.
appears in the display (the
default value is "H:20.0 mA").
2. Use the "Up" and "Down" buttons to enter the maximum
current input mA
max.
> mA
min.
(e.g. mA
max.
= 16 mA).
3. Press the "Start/Stop" button.
– The current value for the mA
max.
assigned flow rate Q
mA
max.
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.
at mA
max.
(e.g. Q
mA max.
= 40 l/h).
• 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).
Note
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.
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.)
T
M
03
66
82
45
0
6
Analog
L:0.0 mA
Down
Up
Stop
Start
Analog
6
mA
Analog
0.000
l / h
0-20 mA
Down
Up
Analog
10.00
l / h
0-20 mA
Stop
Start
0-20 mA
Menu
Info
Menu
Info
0-20 mA
Analog
H:20.0 mA
Down
Up
Stop
Start
Analog
16 mA
Analog
71.00
l / h
0-20 mA
Down
Up
Analog
40.00
l / h
0-20 mA 0-20 mA
0-20 mA
Stop
Start
Flashing
Flashing
Select value for
current input
mA
min.
0-20 mA
Select value for
current input mA
max.
> mA
min.
Set the flow rate Q
mA min.
0 - 0.999 l/h
1 - 9.9 l/h
10 - 99.9 l/h
100 - Q
max.
[l/h]
Set the flow rate Q
mA max.
0 - 0.999 l/h
1 - 9.9 l/h
10 - 99.9 l/h
100 - Q
max.
[l/h]