Actual signals and parameters
183
23.02
INTEGRATION TIME
Defines an integration time for the speed controller. The integration time
defines the rate at which the controller output changes when the error value is
constant. The shorter the integration time, the faster the continuous error value
is corrected. Too short an integration time makes the control unstable.
The figure below shows the speed controller output after an error step when
the error remains constant.
0.01 … 999.97 s
Integration time
10 …
999970
23.03
DERIVATION TIME
Defines the derivation time for the speed controller. Derivative action boosts
the controller output if the error value changes. The longer the derivation time,
the more the speed controller output is boosted during the change. If the
derivation time is set to zero, the controller works as a PI controller, otherwise
as a PID controller.
The derivation makes the control more responsive for disturbances.
Note:
Changing this parameter is recommended only if a pulse encoder is
used.
The figure below shows the speed controller output after an error step when
the error remains constant.
0.0 … 9999.8 ms
Derivation time value.
1 = 1 ms
Index
Name/Selection
Description
FbEq
T
I
Controller Output
t
%
Gain = K
p
= 1
T
I
= Integration time > 0
T
D
= Derivation time = 0
K
p
· e
e = Error value
K
p
· e
T
I
K
p
· e
Error Value
Controller Output
t
%
Gain = K
p
= 1
T
I
= Integration time > 0
T
D
= Derivation time > 0
T
s
= Sample time period = 1 ms
Δ
e = Error value change between
two samples
e = Error value
K
p
·
T
·
Δ
e
T
s
K
p
· e
Содержание ACS 800 Series
Страница 1: ...ACS800 Firmware Manual Crane Control Program N697 ...
Страница 4: ......
Страница 26: ...Start up and control through the I O interface 26 ...
Страница 36: ...Quick start up guide 36 ...
Страница 52: ...Control panel 52 ...
Страница 105: ...Program features 105 Figure Control diagram for Shaft synchronisation executed in 20 ms ...
Страница 126: ...Program features 126 The figures below show speed limits according to different load conditions ...
Страница 128: ...Program features 128 ...
Страница 150: ...Application macros control location EXT1 EXT2 150 ...
Страница 228: ...Actual signals and parameters 228 ...
Страница 299: ...Adaptive Programming examples for crane control 299 ...
Страница 305: ...Adaptive Programming examples for crane control 305 ...
Страница 312: ...Adaptive Programming examples for crane control 312 The following figures show the previous example enlarged ...
Страница 314: ...Adaptive Programming examples for crane control 314 The following figures show the previous example enlarged ...
Страница 318: ...Analogue Extension Module 318 ...
Страница 332: ...Additional data actual signals and parameters 332 ...
Страница 333: ...DriveWindow 333 DriveWindow DriveWindow connected to the ACS800 RMIO RDCO board and channel CH3 ...
Страница 334: ...DriveWindow 334 ...
Страница 335: ...Control block diagrams 335 Control block diagrams ...
Страница 336: ...Control block diagrams 336 ...
Страница 337: ...Control block diagrams 337 ...
Страница 338: ...Control block diagrams 338 ...
Страница 340: ...www abb com drives www abb com drivespartners Contact us 3AFE68775230 Rev E EN 2012 09 25 ...