OPM223/253
Operation
47
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-OxM2x3xx-05-06-00-xx-006.eps
Fig. 34: 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-OLM2x3xx-05-06-xx-007.eps
Abb. 35: 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
Summary of Contents for OPM223
Page 2: ......
Page 95: ...OPM223 253 Technical data 95...
Page 100: ...Appendix OPM223 253 100...
Page 103: ...OPM223 253 103...
Page 104: ...BA194e 00 07 09 71106576 Printed in Germany FM SGML 6 0 DT 71106576...
