Liquisys M CPM223/253
Operation
Hauser
53
Constant controller
Via the current output 2, the minimum actuating variable (0 %) of the controller is output with
0/4 mA and the maximum actuating variable (100%) of the controller is output with 20 mA.
Control characteristic for direct and inverse control action
You can choose between two control characteristics in the R236 field:
• Direct control action = maximum function
• Inverse control action = minimum function
C07-CxM2x3xx-05-06-00-xx-006.eps
Fig. 42:
Control characteristic of a proportional controller with direct and inverse control action
A
Direct = max. function
B
Inverse = min. function
Timer for cleaning function
This function includes a simple cleaning option. You can set the time interval after which cleaning
should start. So you can only select a constant interval sequence.
Other cleaning functions are available for selection in conjunction with the Chemoclean function
(version with four contacts, see "Chemoclean function" section).
!
Note!
Timer and Chemoclean do not work independently of one another. While one of the two functions
is active, the other cannot be started.
X
W
X
W
– X
W
– X
W
100 %
100 %
Y
Y
A
B
C07-CLM2x3xx-05-06-xx-007.eps
Abb. 43:
Connection between cleaning time, pause time and Hold dwell period
A
B
0
1
Wiper and/or spray cleaning system
Hold function
Inactive
Active
t
1
t
2
t
3
Cleaning time (0 ... 999 s)
Pause time between two cleaning intervals
(1 ... 7200 min)
Clean Hold dwell period (0 ... 999 s)
A
B
1
0
t
1
t
2
1
0
t
3
t
t
