42 Program features
Tuning procedure for oscillation damping
Note:
Changing the speed error low-pass filter time constant or the integration time of
the speed controller can affect the tuning of the oscillation damping algorithm. It is
recommended to tune the speed controller before the oscillation damping algorithm.
(The speed controller gain can be adjusted after the tuning of this algorithm.)
Settings
(page
).
Resonance frequency elimination
The control program contains a notch filter function for removing the resonance
frequencies from the speed error signal.
Settings
(page
).
Rush control
In torque control, the motor could potentially rush if the load were suddenly lost. The
control program has a rush control function that decreases the torque reference
whenever the motor speed exceeds
or
Oscillation compensation input
• Set
• Calculate the oscillation frequency from the signal (use the Drive
composer PC tool) and set
• Set
*
• Increase
gradually so that the
algorithm starts to take effect.
oscillation amplitude decreases
oscillation amplitude increases
• Increase
and adjust
if necessary
• Increase
to
suppress the oscillation totally.
*If the phasing of a DC oscillation cannot be
determined by measuring, the value of 0
degrees is usually a suitable initial value.
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...