ABB ACSM1 - Page 173

Parameters and firmware blocks
173
28.16 PI TUNE MODE FW block: None
Activates the speed controller autotune function.
The autotune will automatically set parameters 28.02 PROPORT GAIN and 28.03 INTEGRATION
TIME, as well as 1.31 MECH TIME CONST. If the User autotune mode is chosen, also 26.06 SPD
ERR FTIME is automatically set.
The status of the autotune routine is shown by parameter 6.03 SPEED CTRL STAT.
WARNING! The motor will reach the torque and current limits during the autotune routine.
ENSURE THAT IT IS SAFE TO RUN THE MOTOR BEFORE PERFORMING THE
AUTOTUNE ROUTINE!
Notes:
• Before using the autotune function, the following parameters should be set:
• All parameters adjusted during the start-up as described in chapter Start-up (page 15)
• 22.05 ZERO SPEED LIMIT
• Speed scaling and reference ramp settings in parameter group 25
• 26.06 SPD ERR FTIME
• If the User autotune mode is desired: 28.17 TUNE BANDWIDTH and 28.18 TUNE DAMPING.
• The drive must be in local control mode and stopped before an autotune is requested.
• After requesting an autotune with this parameter, start the drive within 20 seconds.
• Wait until the autotune routine is completed (this parameter has reverted to the value (0) Done). The
routine can be aborted by stopping the drive.
• Check the values of the parameters set by the autotune function.
See also section Speed controller tuning on page 51.
(0) Done No tuning has been requested (normal operation). The parameter also
reverts to this value after an autotune is completed.
(1) Smooth Request speed controller autotune with preset settings for smooth
operation.
(2) Middle Request speed controller autotune with preset settings for medium-
tight operation.
(3) Tight Request speed controller autotune with preset settings for tight
operation.
(4) User Request speed controller autotune with the settings defined by
parameters 28.17 TUNE BANDWIDTH and 28.18 TUNE DAMPING
.
28.17 TUNE BANDWIDTH FW block: None
Speed controller bandwidth for autotune procedure, User mode (see parameter 28.16 PI TUNE
MODE).
A larger bandwidth results in more restricted speed controller settings.
0.00 … 2000.00 Hz Tune bandwidth for User autotune mode.
28.18 TUNE DAMPING FW block: None
Speed controller damping for autotune procedure, User mode (see parameter 28.16 PI TUNE
MODE).
Higher damping results in safer and smoother operation.
0.0 … 200.0 Speed controller damping for User autotune mode.