
56 Program features
but possibly too high gain values for some applications. The figure below shows
speed responses at a speed reference step (typically 1…20%).
Autotune results
At the end of a successful autotune routine, its results are automatically transferred
into parameters
•
(proportional gain of the speed controller)
•
(integration time of the speed controller)
•
(derivation time of acceleration(/deceleration) compensation)
•
(mechanical time constant of the motor and machine).
Nevertheless, it is still possible to manually adjust the controller gain, integration time
and derivation time.
A: Undercompensated
B: Normally tuned (autotuning)
C: Normally tuned (manually). Better dynamic performance than with B
D: Overcompensated speed controller
%
t
n
C
B
D
n
N
A
ACS180 FW.book Page 56 Tuesday, March 9, 2021 2:25 PM