Control Parameter [Type] - ProMinent DULCOMETER diaLog DACb Assembly And Operating Instruction

Fig. 86: Control type PID monodirectional, pH-increasing direction
Adjustable parameters in the [Control] menu
Make the following selection in the Control
menu:
11.1

Control parameter [Type]

You set the controller type under the menu
[Type] . You can set the [Type] as
option
[1-way] or [2-way] .
P, PI, PID controllers are continuous control‐
lers. The control variables can take any value in
the control range from -100 % ... +100 %.
Negative deviation
Positive control variable
Setpoint
Time
Time
P controller:
This controller type is used with an integrating
[Batch Neutralisation] ). If the
control path (e.g.
control deviation becomes small then the con‐
trol (actuation) of the actuator becomes smaller
(proportional relationship). If the setpoint is
nearly reached, then the control output is nearly
0 %. However the setpoint is never exactly
reached. Consequently a permanent control
deviation results. When stabilizing large
changes, excess oscillations may occur.
[Control]
Setting the
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