ABB ACS560 Firmware Manual page 234

234 Parameters
No. Name/Value
25.33 Speed controller
autotune
Off
On
25.34 Speed controller
autotune mode
Smooth
Normal
Tight
25.37 Mechanical time
constant
0.00...1000.00 s
25.38 Autotune torque
step
0.00...100.00%
25.39 Autotune speed
step
Description
Activates (or selects a source that activates) the speed
controller autotune function. See section
autotune (page 385).
The autotune will automatically set parameters
proportional gain, 25.03 Speed integration time
Mechanical time constant.
The prerequisites for performing the autotune routine are:
• the motor identification run (ID run) has been successfully
completed
• the speed and torque limits (parameter group
have been set
• speed feedback filtering (parameter group 90 Feedback
selection), speed error filtering
conditioning) and zero speed
been set, and
• the drive has been started and is running in speed control
mode.
WARNING: The motor and machinery will run against
the torque and speed limits during the autotune
routine. MAKE SURE IT IS SAFE TO ACTIVATE THE
AUTOTUNE FUNCTION!
The autotune routine can be aborted by stopping the drive.
0?1 = Activate speed controller autotune
Note: The value does not revert to 0 automatically
0
1
Defines a control preset for the speed controller autotune
function. The setting affects the way the torque reference will
respond to a speed reference step.
Slow but robust response.
Medium setting.
Fast response. May produce too high a gain value for some
applications.
Mechanical time constant of the drive and the machinery as
determined by the speed controller autotune function. The
value can be adjusted manually.
Mechanical time constant.
Defines an added torque value used by the autotune function.
This value is scaled to motor nominal torque.
Note that the torque used by the autotune function can also
be limited by the torque limits (in parameter group
and nominal motor torque.
Autotune torque step.
Defines a speed value added to the initial speed for the
autotune routine. The initial speed (speed used when
autotune is activated) plus the value of this parameter is the
calculated maximum speed used by the autotune routine. The
maximum speed can also be limited by the speed limits (in
parameter group 30 Limits) and nominal motor speed.
The value is scaled to motor nominal speed.
Note: The motor will exceed the calculated maximum speed
slightly at the end of each acceleration stage.
Speed controller
25.02 Speed
and 25.37
30 Limits)
(24 Speed reference
(21 Start/stop mode) have
30 Limits)
Def/FbEq16
Off
0
1
Normal
0
1
2
0.00
100 = 1 s
10.00
100 = 1%
10.00