ABB ACS560, Firmware Manual

Page: 230 / 514

230 Parameters
24 Speed reference
conditioning Speed error calculation; speed error window control
configuration; speed error step.
See the control chain diagram on page
492 .
24.01 Used speed
reference Displays the ramped and corrected speed reference (before
speed error calculation). See the control chain diagram on
page
492 .
This parameter is read-only.
-
-30000.00…
30000.00 rpm Speed reference used for speed error calculation. See par.
46.01
24.02 Used speed
feedback Displays the speed feedback used for speed error calculation.
See the control chain diagram on page
492 .
This parameter is read-only.
-
-30000.00…
30000.00 rpm Speed feedback used for speed error calculation. See par.
46.01
24.03 Speed error filtered Displays the filtered speed error. See the control chain
diagram on page
492 .
This parameter is read-only.
-
-30000.0…
30000.0 rpm Filtered speed error. See par.
46.01
25
25 Speed control Speed controller settings.
See the control chain diagrams on pages
493 and 494 .
25.01 Torque reference
speed control Displays the speed controller output that is transferred to the
torque controller. See the control chain diagram on page
493 .
This parameter is read-only.
0.0
-1600.0…1600.0% Limited speed controller output torque. See par.
46.03
25.02 Speed proportional
gain Defines the proportional gain (K
p
) of the speed controller. Too
high a gain may cause speed oscillation. The figure below
shows the speed controller output after an error step when
the error remains constant.
5.00
If gain is set to 1, a 10% change in error value (reference -
actual value) causes the speed controller output to change by
10%, ie. the output value is input × gain.
0.00…250.00 Proportional gain for speed controller. 100 = 1
No. Name/Value Description Def/FbEq16
Gain = K
p
= 1
T
I
= Integration time = 0
T
D
= Derivation time = 0
%
Controller
output = K
p
× e
Time
e = Error value
Controller output
Error value