Actual signals and parameters 273
3628 TIMED FUNC 3
SRC
See parameter
See parameter
3629 TIMED FUNC 4
SRC
See parameter
See parameter
40 PROCESS PID
SET 1
Process PID (PID1) control parameter set 1. See section
on page
4001 GAIN
Defines the gain for the process PID controller. High gain
may cause speed oscillation.
1.0
0.1…100.0
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.
1 = 0.1
4002 INTEGRATION
TIME
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.
10.0 s
0.0 = NOT SEL
0.1…3600.0 s
Integration time. If parameter value is set to zero, integration
(I-part of the PID controller) is disabled.
1 = 0.1 s
All parameters
No.
Name/Value
Description
Def/FbEq
t
A = Error
B = Error value step
C = Controller output with gain = 1
D = Controller output with gain = 10
D (
= 10)
= 1)
B
A
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...