Control Parameter [Setpoint]; Control Parameter [Xp]; Control Parameter [Ti] - ProMinent DULCOMETER diaLog DACb Assembly And Operating Instructions Manual

13.3

Control parameter [Setpoint]

13.4

Control parameter [xp]

Fig. 91: The smaller the xp value, the more "forcefully" the control reacts.
13.5

Control parameter [Ti]

The setpoint specifies the target value for control. The controller
attempts to maintain the deviation between the setpoint and the
actual value (measured value) as close to
The xp value is the controller amplification factor. The xp value
relates to the measuring range end of a controller and is entered
as an absolute value. For pH for example xp=1.5.
For measured variables such as chlorine, the sensor measuring
range is selected. The sensor measuring range corresponds to the
measuring range end.
For pH, the measuring range end is 15.45. Here the default xp
value is 1.54 (corresponds to ± 1.54 pH). The xp value states that
for a deviation of ± 1.54 from the setpoint, the control variable
equals ± 100%. The smaller the xp value, the more
control reacts, however the control also moves slightly into the
over-control range.
[Ti] is the integral time of the I-controller (integral con‐
The time
troller) in seconds. The time
control deviation from the control variable. The smaller the time
[Ti] , the greater the effect on the control variable. An infinitely long
[Ti] results in a pure proportional control.
time
Setting the
'0' as possible.
'forcefully' the
Setpoint
A1473
[Ti] defines the time integration of the
[Control]
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