164 Parameters
Displays the inverted (unfiltered) speed error. See the control
chain diagram on page
This parameter is read-only.
-
-30000.0…
30000.0 rpm
Inverted speed error.
See par.
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
0.00 rpm
-10000.00…
10000.00 rpm
Speed reference correction.
See par.
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.
0 ms
0…10000 ms
Speed error filtering time constant. 0 = filtering disabled.
1 = 1 ms
25
Speed controller settings.
See the control chain diagram on page
Torque reference
speed control
Displays the speed controller output that is transferred to the
torque controller. See the control chain diagram on page
This parameter is read-only.
-
-1600.0…1600.0%
Limited speed controller output torque.
See par.
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.
10.00
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
Summary of Contents for ACQ580
Page 1: ...ABB drives for water Firmware manual ACQ580 pump control program ...
Page 4: ... 2017 ABB Oy All Rights Reserved 3AXD50000035867 Rev C EN EFFECTIVE 2017 06 21 ...
Page 30: ...26 Start up control with I O and ID run ...
Page 40: ...36 Default configuration ...
Page 304: ...300 Parameters ...
Page 340: ...336 Additional parameter data ...