![background image](http://html1.mh-extra.com/html/abb/acs880-x04/acs880-x04_firmware-manual_3389539046.webp)
46 Program features
Autotune modes
Autotuning can be performed in three different ways depending on the setting of
parameter
Speed controller autotune mode
. The selections
and
define how the drive torque reference should react to a speed reference
step after tuning. The selection
will produce a slow but robust response;
will produce a fast response 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)
•
(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
Содержание ACS880-x04
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Страница 4: ......
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 111: ...Application macros 111 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 112: ...112 Application macros ...
Страница 496: ...496 Additional parameter data ...
Страница 544: ...544 Fault tracing ...
Страница 602: ...602 Control chain diagrams ...