ACSetup programme
Positioning module IMD20, IMD40
Current Controller dialogue box
The setting of the PI current controller is realised via the parameters
kp
(proportional amplification)
and
ki
(integral amplification). Based upon the default values, the controller settings can be
optimised. In order to facilitate the setting process, an internally generated rectangular signal (three
impulses) is applied on the controller’s input for the test. Here, the duration and the amplitude of the
test signal can be set. The path of the actual current is recorded internally and then queried and
displayed by the ACSetup programme (see Figure). For the setting of the controller, it has to be
made sure that the target value (dotted line) is achieved and maintained.
Note: If the motor does not have to drive a large mechanical load and if the duration of the test
impulse is too long, it may be that the motor goes into saturation and that the current decreases.
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