Parameters 133
Defines the integration time of the speed
controller.
The integration time defines the rate at which
the controller output changes when the error
value is constant and the proportional gain of the
speed controller is 1. The shorter the integration
time, the faster the continuous error value is
corrected. This time constant must be set to the
same order of magnitude as the time constant
(time to respond) of the actual mechanical
system being controlled, otherwise instability
will result.
Setting the integration time to zero disables the
I-part of the controller. This is useful to do when
tuning the proportional gain; adjust the
proportional gain first, then return the
integration time.
Anti-windup (the integrator just integrates up to
100%) stops the integrator if the controller
output is limited.
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.
0.50
0.00…1000.00 s Integration time for speed controller.
10 = 1
No.
Name/Value
Description
Def/
FbEq16
K
p
× e
K
p
× e
%
e = Error value
Time
Gain = K
p
= 1
T
I
= Integration time > 0
T
D
= Derivation time = 0
Controller output
T
I
Содержание ACQ80
Страница 1: ... ABB DRIVES FOR WATER ACQ80 standard program control Firmware manual ...
Страница 2: ... Related documents are listed on page 13 ...
Страница 4: ......
Страница 10: ...10 Table of contents ...
Страница 32: ...32 Startup control with I O and ID run ...
Страница 34: ...34 Using the control panel ...
Страница 74: ...74 Program features ...
Страница 78: ...78 Control macros ...
Страница 380: ...380 Fieldbus control through a fieldbus adapter ...
Страница 384: ...384 Parameterization with Drive Composer ...
Страница 388: ...388 Parameterization with Automation builder drive manager ...