62 Standard programposi 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
A warning message,
, will be generated if the
autotune routine does not complete successfully. See chapter
(page
) for further information.
Settings
Parameters
(page
).
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.
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
Derivative
Proportional,
integral
Derivative
acceleration
compensation
Torque
reference
Speed
reference
Actual speed
Error
value
-
+
+
+
+
Содержание ACS880 ESP
Страница 1: ...ABB industrial drives Firmware manual ACS880 PCP ESP control program ...
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Страница 28: ...28 PCP ESP control start up ...
Страница 30: ...30 Using the control panel ...
Страница 94: ...94 Standard programposi features ...
Страница 100: ...100 Default control connections ...
Страница 360: ...360 Parameters ...
Страница 362: ...362 Additional parameter data Fieldbus addresses Refer to the User s Manual of the fieldbus adapter ...
Страница 436: ...436 Fault tracing ...
Страница 486: ...486 Control chain diagrams ...
Страница 492: ...492 Appendix ESP with step up transformer and sine filter ...
Страница 494: ...Contact us www abb com drives www abb com drivespartners 3AXD50000016186 Rev B EN 2015 10 27 ...