Lenze 9400 - Manual (Page 174)

5 Motor interface
5.5 Sensorless vector control (SLVC)
174
Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06
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5.5.3.2 Optimising the speed controller
To optimise the speed controller, the drive must be accelerated in the base speed range with slow
setpoint ramps (e.g. acceleration time = 5 s) to speed values below the rated speed and then
decelerated again.
Gain optimisation
The proportional gain Vp is selected under
C00070 :
1. Increase C00070 until the drive oscillates slightly (see picture [5-11] ).
2. Reduce C00070 until the drive runs stable again (see picture [5-12] ).
3. Reduce C00070 to approx. half the value.
Optimise the reset time
The reset time Tn is selected under
C00071 :
1. Reduce C00071 until the drive oscillates slightly.
2. Increase C00071 until the drive is stable again.
3. Increase C00071 to approx. double the value.