Process Pid Set 1 - ABB ACS355 series User Manual

All parameters
No. Name/Value
3628 TIMED FUNC 3
SRC
3629 TIMED FUNC 4
SRC
40 PROCESS PID
SET 1
4001 GAIN
0.1...100.0
4002 INTEGRATION
TIME
0.0 = NOT SEL
0.1...3600.0 s
Description
See parameter 3626 TIMED FUNC 1
See parameter 3626 TIMED FUNC 1
See parameter 3626 TIMED FUNC 1
See parameter 3626 TIMED FUNC 1
Process PID (PID1) control parameter set 1. See section
PID control on page 151.
Defines the gain for the process PID controller. High gain
may cause speed oscillation.
Gain. When value is set to 0.1, the PID controller output
changes one-tenth as much as the error value. When value
is set to 100, the PID controller output changes one hundred
times as much as the error value.
Defines the integration time for the process PID1 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.
A = Error
B = Error value step
C = Controller output with gain = 1
D = Controller output with gain = 10
B
D (4001 = 10)
C (4001 = 1)
Integration time. If parameter value is set to zero, integration
(I-part of the PID controller) is disabled.
Actual signals and parameters 273
SRC.
SRC.
SRC.
SRC.
A
t
4002
Def/FbEq
1.0
1 = 0.1
10.0 s
1 = 0.1 s