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84 Program features
The figure below is a simplified block diagram of the speed controller. The controller
output is the reference for the torque controller.
Warning indications
, will be generated if the
autotune routine does not complete successfully. See chapter
(page
) for further information.
Settings
Parameters
).
Oscillation damping
The oscillation damping function can be used to cancel out oscillations caused by
mechanics or an oscillating DC voltage. The input – a signal reflecting the oscillation
– is selected by parameter
Oscillation compensation input
. The oscillation
damping function outputs a sine wave (
) which can
be summed with the torque reference with a suitable gain (
) and phase shift (
The oscillation damping algorithm can be activated without connecting the output to
the reference chain, which makes it possible to compare the input and output of the
function and make further adjustments before applying the result.
Derivative
Proportional,
integral
Derivative
acceleration
compensation
Torque
reference
Speed
reference
Actual speed
Error
value
-
+
+
+
+
Summary of Contents for ACS880-01 Series
Page 1: ...ABB industrial drives Firmware manual ACS880 ESP control program option N5600 ...
Page 4: ......
Page 12: ...12 Table of contents ...
Page 20: ...20 Introduction to the manual ...
Page 22: ...22 Using the control panel ...
Page 28: ...28 Control locations and operating modes ...
Page 146: ...146 Application macros ...
Page 502: ...502 Parameters ...
Page 606: ...606 Fault tracing ...
Page 662: ...662 Control chain diagrams ...