ABB ACS150 series

162
Appendix: Process PID control
A C S 6 0 0
3
0 1 0 b
a r
4 2 0 m
A
4. 4017 ACT2 INPUT: If a second feedback is used, configure also this actual value
2 (4020 ACT2 MINIMUM and 4021 ACT2 MAXIMUM).
5. 4001 GAIN, 4002 INTEGRATION TIME, 4003 DERIVATION TIME, 4005 ERROR
VALUE INV: Configure the desired gain, integration time, derivation time and
error value inversion when needed.
6. Activate PID output: Check that 1106 REF2 SELECT is set to 19 (PID1OUT).
Pressure boost pump
The figure below shows an application example: The controller adjusts the speed of
a pressure boost pump according to the measured pressure and the set pressure
reference.
Example:
PID control block diagram
Pressure boost pump
%ref
ACS150
Actual values
4014
4001
4002
4003
ref
k
ti
td
i
PID
Frequency
0…10 bar
4…20 mA
.
.
4021
4004
dFiltT
4005
errVInv
reference
AI1
AI2
3
IMOT
PIDmax
PIDmin
...
oh1
ol1
%ref = 4010