Process Pid Set 1 - ABB ACS350 User Manual

214
Parameters – complete descriptions
Index Name/Selection
T3+T4+B
T1+T3+T4+B
T2+T3+T4+B
T1+2+3+4+B
3627 TIMED FUNC 2 SRC
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...3600.0 s
Actual signals and parameters
Description
Booster and time periods 3 and 4
Booster and time periods 1, 3 and 4
Booster and time periods 2, 3 and 4
Booster and time periods 1, 2, 3 and 4
See parameter 3626 TIMED FUNC 1 SRC.
See parameter 3626 TIMED FUNC 1 SRC.
See parameter 3626 TIMED FUNC 1 SRC.
See parameter 3626 TIMED FUNC 1 SRC.
See parameter 3626 TIMED FUNC 1 SRC.
See parameter 3626 TIMED FUNC 1 SRC.
Process PID (PID1) control parameter set 1. See section
page 120.
Defines the gain for the process PID controller. Great 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
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.
A = Error
B = Error value step
C = Controller output with gain = 1
D = Controller output with gain = 10
t
4002
Def, FbEq
28
29
30
31
PID control on
1
1 = 0.1
60
1 = 0.1 s