![ABB ACS850 series Manual Download Page 177](http://html.mh-extra.com/html/abb/acs850-series/acs850-series_manual_2316177.webp)
Parameters 177
23.02
Integration time
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. Too short an integration time makes the control
unstable.
If parameter value is set to zero, the I-part of the controller is
disabled.
Anti-windup stops the integrator if the controller output is
limited. See
The figure below shows the speed controller output after an
error step when the error remains constant.
Note:
This parameter is automatically set by the speed
controller autotune function. See parameter
0.00 … 600.00 s
Integration time for speed controller.
100 = 1 s
No.
Name/Value
Description
FbEq
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
Summary of Contents for ACS850 series
Page 1: ...ACS850 Firmware Manual ACS850 Standard Control Program ...
Page 4: ......
Page 56: ...56 Control locations and operating modes ...
Page 262: ...262 Parameters ...
Page 310: ...310 Fault tracing ...
Page 348: ...348 Control through a fieldbus adapter ...
Page 358: ...358 Drive to drive link ...