Parameters 169
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.
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.
The integrator has anti-windup control for operation at a
torque or current limit.
The figure below shows the speed controller output after an
error step when the error remains constant.
2.50 s;
5.00 s
(
95.21
b1/b2)
Note:
This parameter is automatically set by the speed
controller autotune function. See section
(page
).
0.00 … 1000.00 s
Integration time for speed controller.
10 = 1 s
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
Summary of Contents for ACS860
Page 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Page 4: ......
Page 10: ...10 Table of contents ...
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 54: ...54 Program features ...
Page 78: ...78 Program features ...
Page 90: ...90 Application macros ...
Page 342: ...342 Additional parameter data ...
Page 380: ...380 Fault tracing ...
Page 381: ...Fault tracing 381 ...
Page 382: ...382 Fault tracing ...
Page 436: ...436 Control chain diagrams ...