Lenze 8600 series - Setting of the Controller Parameters

--.
l Calculate the required act. value gain according to the following
equation:
Required gain = active gain
measured Speed
desired Speed
l Enter the calculated value after selecting the suitable act. value
input (C025) under C027.
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4.5 Setting of the controller Parameters
With the setting of the Controller Parameters, you adapt the Pl
Controller to the drive. This adjustment is necessary after the auto-
adjustment as well as after the manual adjustment. Proceed as
follows:
l Increase the gain of the Pl controller under Code CO70 until the
drrve stark to oscillate.
l Then reduce this value by 10%.
l If there should be no oscillation with a gain of 10, reduce the
adjustment time under CO71, until the drive stark to oscillate.
l Then reduce the gain by 10%.
l If ,the System already oscillates with the factory setting, increase
the adjustment time, until the drive runs smoothly.
Code Name Parameter (Factory setting is printed in bold) Acceptance
CO70 Gain of
1 .oo 0.01
(0.01) 1 .OO ON-LINE
PI controller 1 .o
lO.11
10.0
10
Ul
300
CO71 Adjustment 0.10 s 0.01 s (0.01) 1 .OO s ON-LINE
time of 1.0 s
Oll
10.0s
Pl controlller
10s
(11
100s
lmze
79