110
LEADING IN PRODUCTION EFFICIENCY
Operating Manual
© Dürr Systems AG
ED3K_Operating_Manual_Rev02LD_03Lug2020_EN. docx
Rev.02 – 03.07.2020
In the regulation page, press the button
to open the graphic page, where are represented
the values of the set point, the current flow, and the regulator output.
You can zoom the graph by changing the parameters as described below.
8.11.4 Regulation parameters
In the regulation page, press the button
to open the page of the regulation
parameters. Log in with level 3 to modify the parameters.
Figure 65 flow regulation – Parameters 6
P
Is the proportional gain of the PI regulator. Increase the value of this factor
until you get a prompt response of the regulator, with no overshoot. Default
value 0.005. Minimum value 0, maximum 10.
I
Is the integral time. Decrease the value to reduce the residual error,
without oscillations.
Default value 200 [s]. Minimum value 0, maximum 100000.
Deadband
The regulator output is “frozen” when the flow error is contained within the
deadband.
Default value 3 [ml/min]
Output Maximum
table deviation
While spraying, the deviation of the regulator output, compared to the
value obtained from the table data calculation, can be limited inside a
band, defined in percentage. A warning message appears when the limit
of the band is reached. Unexpected output values could be due to
obstructions in the house or changed conditions of the paint.
Set this value big enough to let the output value change, if the regulation
table data are not compensated with temperature (system equipped with
Coriolis mass flow).
Set this value to zero to exclude the control, working with no output
limitation. Default value 30%.
Regulator lower
limin
Set this value at the lowest limit of the regulator output in percentage,
which let the material pass through the spray gun; this avoid the regulator
output gets stuck at such a low value doesn’t let the material pass.
Default value 20%.
