Commissioning the
7.6 Controller settings
F-TM ServoDrive
72 Equipment Manual, 02/2020, A5E47579503-AA
Speed controller and current controller
You can either set the speed and current controller manually or have the controller settings
calculated by STEP 7.
Having controller settings calculated
To have the controller settings of STEP 7 calculated, proceed as follows:
1. Click the "Calculate speed number/current controller settings" button in the area for the
controller settings.
The "Controller calculation" window opens. The window displays the appropriate
controller parameters.
2. If needed, you can re-adjust the controller settings via the "Controller behavior" and "Load
fluctuation" sliders.
– "Controller behavior": If the value is increased, the controllers react more strongly to
controller differences. At the same time, the controller tends to overshoot.
The default setting here is 80%.
– "Load fluctuation": A small value allows more oscillation in the stable state. The speed
deviations are small during a load step.
The default setting here is 20%.
Note
There is no guarantee that readjustment of the controller calculation
will always result in a
stable system.
Change the settings for "Controller behavior" and "Load fluctuation" incrementally. Always
check the settings with low speed and load profiles.
3. Apply the controller settings by clicking the "Apply" button.
The calculated controller settings can be changed manually.
Setting the controller settings manually
Enter the settings for the speed controller under "Parameters" > "Control/closed-loop control"
> "Speed controller".
● Prop. gain
● Integral action time
● Speed setpoint filter
● Speed actual value filter
Enter the settings for the current controller under "Parameters" > "Control/closed-loop
control" > "Current controller".
● Iq proportional gain
● Iq integral action time
● Id proportional gain
● Id integral action time
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