Operation
Liquiline System CA80CR
92
Hauser
10.5.1 Application examples
Chlorine control with feedforward control
Chlorine control with feedforward control
Utilize the advantage of the effectively wear-free control with binary outputs versus a control
system with relay. It is possible to achieve virtually continuous dosing using a dosing pump with
higher input frequency through pulse frequency modulation (PFM).
a0021466
Fig. 72: Example of chlorine control with feedforward control
1
Connection of the inductive proximity switch of the CCA250 assembly to the digital input of the DIO module for
enabling the controller
2
Connection of the signal from a flowmeter to the digital input of the DIO module using the pulse-frequency
modulation (=PFM, setting in the Liquiline firmware) for feedforward control
3
Activation of a (pulse) dosing pump via a digital output of the DIO module using the PFM
A
Dosing pump
CC
A25
0
C
A8
0
Fl
ow,
e
.g. P
roma
g53
A
BU
BK
BN
CC
A25
0
INS
47
48
91
92
C
A8
0
D
I
O
1
2
3
Di
g.
in
C
A8
0
:
D
I
O
Di
g.
in
: PFM
91
92
+
–
45
46
C
A8
0
D
I
O
Di
g.
out
: PFM
Содержание Liquiline System CA80CR
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