ProMinent DULCO flex Control - Page 48

I [mA]
I 1
I 2
F1
F2
Fmax
0 20
P1
P2
B0088
Fig. 30: Speed-current diagram for "Linear curve"
Plot a diagram similar to the one above – with values for
(I1, F1) and (I2, F2) – so that you can set the pump as
desired!
The smallest processable difference between I1 and I2
is 4 mA (ll I1-I2 ll ≥4 mA).
In the ‘Error message’ menu item, you can activate error processing for
these types of processing.
‘Lower side band’
Using this type of processing, you can control a metering pump using the
current signal as shown in the diagram below.
However, you can also control two metering pumps for different feed
chemicals via a current signal (e.g. one acid pump and one alkali pump
using the signal of a pH sensor). To do this, connect the pumps electrically
in series.
In the
‘Error message’ menu item, you can activate error processing for
these types of processing.
I [mA]
I 1 I 2
F2
F1
0 20
a) b)
P1
P2
Fmax
B0089
I [mA]
I 1
I 2
F1
0 20
P1
P2
F2
Fmax
Fig. 31: Speed-current diagram for a) Lower side band, b) Upper side band
‘Upper side band’
Error processing
Error processing
Set up / ‘Menu’
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