Basler DECS-100, Инструкция по эксплуатации

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DECS-100 BESTCOMS for Windows
®
OS 5-18
Figure 5-19. PID Window
is changed or selected, the PID button changes from gray to yellow and the button can be clicked to view the
PID window. After the PID numbers are modified, calculated, and updated, the PID window is closed by
clicking the Update Setting Screen button. The modified PID values are then shown on the Control Gain
screen.
PID Calculation Based on Input Values
The available range for the exciter time constant depends on the value entered for the generator time
constant. (The default value for the exciter time constant is the generator time constant divided by 6.) The
generator time constant value selected must be in the range of 1.00 to 15.00 seconds and in 0.05 increments.
When the generator time constant value is 1.00, the available exciter time constant range is 0.03 to 0.50 in
0.01 second increments. When the generator time constant value is 15.00, the available exciter time constant
range is 0.30 to 3.00 in 0.01 second increments.
For example, when T'do is set at 2.0 seconds, Texc is 0.33. After specifying the input values, a set of PID
parameters (output data) is generated automatically. If T'do is set at 5.00 seconds, then Texc is 0.83
seconds. The calculated KP is 155.47, KI is 138.72, KD is 48, and Kg is 1.
PID parameters can be directly removed from, added to, or modified in the PID List Data. PID parameters
may also be saved into a file (pidlist.dat).
Adding to the PID List
PID parameters can be added to a list and recalled for operation and comparison. To add to the list, type a
name for the generator (or other appropriate information) in the generator information box. Select the
generator time constant. Observe the PID gain parameters in the Field Output Data fields. If these gain
parameters are appropriate, click the Add to PID List button. Check for the new parameters by pulling down
the PID List (click the down arrow). The new gain and time constant parameters should be displayed.
Removing a PID List Record
PID parameters can also be removed from the list. To remove a list (record), pull down the PID List and
select the record or list so that the gain and time constant parameters are displayed. Click the Remove
Record button and the listed record is deleted.
CAUTION
Improper PID numbers will result in poor system performance or system damage.