62 Program features
The prerequisites for performing the autotune routine are:
• The ID run has been successfully completed
• Speed, torque, current and acceleration limits (parameter groups
) are set
• Speed feedback filtering, speed error filtering and zero speed are set (parameter
groups
and
• The drive is stopped.
The results of the autotune routine are automatically transferred into parameters
•
(proportional gain of the speed controller)
•
(integration time of the speed controller)
•
(mechanical time constant of the machinery).
The figure below shows speed responses at a speed reference step (typically
1…20%).
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
Summary of Contents for ACS850 series
Page 1: ...ACS850 Firmware Manual ACS850 Standard Control Program ...
Page 4: ......
Page 56: ...56 Control locations and operating modes ...
Page 262: ...262 Parameters ...
Page 310: ...310 Fault tracing ...
Page 348: ...348 Control through a fieldbus adapter ...
Page 358: ...358 Drive to drive link ...