English (GB)
34
Even for current input / current output assignments that are
already weighted in the second function level (see curve 3a),
subsequent weighting can be set or weighting can be shifted
here. The value for the maximum flow rate Q
select mA max.
at
mA
max.
is shifted (curve 3b).
Fig. 37 Current input and current output with direct weighting
Fig. 38 Current input and current output with subsequent weighting
9.9.2 With calibrated pump
When calibrating the pump for your application and using current
signal control and/or current output, proceed as follows:
1. Calibrate the pump.
2. Determine the maximum flow rate Q
cal
by taking a reading on
the pump: Q
cal
is the maximum adjustable flow rate after
calibration, e.g. in manual mode, or the displayed flow rate in
continuous operation (press and hold down the "Start/Stop"
button for longer than 1 second).
3. To set the current input / current output weighting, see section
9.9.3 Setting the weighting.
TM03 6676 4506
0 mA 4 mA 8 mA 12 mA 16 mA 20 mA
0
I
in
[mA]
Q [l/h]
I
in
/ I
out
0-20 mA
I
in
4-20 mA
I
out
4-20 mA, manual,
kontakt
1a
2a
1..
2..
Q
max
default (Q
kal
)
50 l/h
20 l/h
1b
2b
Q
select max.
40 l/h
10 l/h
30 l/h
I
in
/ I
out
0-20 mA
I
in
4-20 mA
I
out
4-20 mA, manual,
contact
TM03 6677 4506
0 mA 4 mA 8 mA 12 mA 16 mA 20 mA
0
I
in
[mA]
3a
3b
Q
select mA max. b
/
mA
max.
Q
select mA max. a
/
mA
max.
Q
select mA min.
/
mA
min.
Q [l/h]
50 l/h
20 l/h
40 l/h
10 l/h
30 l/h
Q
select mA max. a
/ mA
max.
Q
select mA min.
/ mA
min.
Q
select mA max. b
/ mA
max.
For unweighted assignment (curves 1a, 2a, see
fig. 34) select the following reference points:
L: mA
min.
= 0 (4) mA / Q
select mA min.
= 0 l/h
H: mA
max.
= 20 mA / Q
select mA max.
= Q
cal
.
Q
cal
is not updated automatically when the pump
is re-calibrated. This protects the user-defined
value pairs. After calibration, new weighting may
be required!
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