ABB ACS280 Firmware Manual page 159

No. Name/Value
24
24 Speed reference conditioning
24.01 Used speed reference
-30000.00... 30000.00
rpm
24.02 Used speed feedback
-30000.00... 30000.00
rpm
24.03 Speed error filtered
-30000.0... 30000.0
rpm
24.04 Speed error inverted
-30000.0... 30000.0
rpm
24.11 Speed correction
-10000.00... 10000.00
rpm
24.12 Speed error filter time
0...10000 ms
Description
Speed error calculation; speed error window control
configuration; speed error step.
See the control chain diagram on page
Displays the ramped and corrected speed reference
(before speed error calculation). See the control chain
418
diagram on page .
This parameter is read-only.
Speed reference used for speed error calculation.
Displays the speed feedback used for speed error
calculation. See the control chain diagram on page
418
.
This parameter is read-only.
Speed feedback used for speed error calculation.
Displays the filtered speed error. See the control
chain diagram on page
This parameter is read-only.
Filtered speed error.
Displays the inverted (unfiltered) speed error. See the
control chain diagram on page
This parameter is read-only.
Inverted speed error.
Defines a speed reference correction, ie. a value
added to the existing reference between ramping and
limitation. This is useful to trim the speed if
necessary, for example to adjust draw between
sections of a paper machine.
See the control chain diagram on page
Speed reference correction.
Defines the time constant of the speed error low-pass
filter.
If the used speed reference changes rapidly, the
possible interferences in the speed measurement can
be filtered with the speed error filter. Reducing the
ripple with this filter may cause speed controller
tuning problems. A long filter time constant and fast
acceleration time contradict one another. A very long
filter time results in unstable control.
Speed error filtering time constant. 0 = filtering
disabled.
418
.
418
.
418
.
418
.
Parameters 159
Default
FbEq 16
-
See par.
46.01
-
See par.
46.01
-
See par.
46.01
-
See par.
46.01
0.00 rpm
See par.
46.01
0 ms
1 = 1 ms