Block Diagrams - ABB ACS355 User Manual

150 Program features

Block diagrams

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:
Pressure boost pump
A C S 6 0 0
Drive
A C T P A R F U N C D R I V E
E N T E R
L O C R E S E T R E F
R E M
3
0 . . . 1 0 b a r
2
4 . . . 2 0 m A
3
PID control block diagram
%ref
Actual values
4014
.
. .
4021
AI1
AI2
IMOT
PID
ref
k
4001
ti
4002
4003 td
i
4004 dFiltT
4005 errVInv
PIDmax
oh1
ol1
PIDmin
...
%ref = 4010
Switch
Frequency
reference
Speed
reference
9904 = 0