January 2012 6.20 Commissioning 1093
Speed controller
step adjustment
In TNCopt, select the "speed-controller step adjustment" function.
The P factor and the filter parameters are transferred from the speed
controller stability measurement performed previously.
Set the I factor (IntGain) to a small value:
Value 0 for horizontal axes
Value 100 for vertical axes, e.g. Z axis
Now check the P factor of the speed controller, which you determined
previously. This factor might be too high and need to be reduced. Carry out
a measurement and continue reducing the P factor until you:
- obtain a low oscillation tendency
- there is (almost) no overshoot
- obtain a rise time of approx. 3 ms (incl. I factor)
- obtain a "smooth" step response.
Click the START button (AUTO is disabled)
Example of a P factor adjusted too high
Reduce the P factor and disable the filters you do not need (filters for a very
high P factor)
Repeat the measurement to check the P factor.
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