132 Parameters
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.
Torque reference
speed control
Shows speed controller output that is
transferred to the torque controller. This
parameter is read-only.
0.0
-1600.0…
1600.0%
Limited speed controller output torque.
10 = 1
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.
Note:
ABB recommends not to change the
default value. This can impact the MPPT
efficiency.
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
%
Controlle
r output =
K
p
× e
Time
e = Error
value
Controller output
Error value
Summary of Contents for ACQ80
Page 1: ... ABB DRIVES FOR WATER ACQ80 standard program control Firmware manual ...
Page 2: ... Related documents are listed on page 13 ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 32: ...32 Startup control with I O and ID run ...
Page 34: ...34 Using the control panel ...
Page 74: ...74 Program features ...
Page 78: ...78 Control macros ...
Page 380: ...380 Fieldbus control through a fieldbus adapter ...
Page 384: ...384 Parameterization with Drive Composer ...
Page 388: ...388 Parameterization with Automation builder drive manager ...