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58 Program features
Pump control features
PID control
There is a built-in PID controller in the drive. The controller can be used to control
process variables such as pressure, flow or fluid level.
In process PID control, a process setpoint (reference) is connected to the drive
instead of a speed reference. A process actual value (feedback) is also brought back
to the drive. The process PID control adjusts the drive speed in order to keep the
measured process quantity (actual value) at the desired level (setpoint). The control
program allows switching between two different setpoints and actual values.
The simplified block diagram below illustrates the process PID control. For a more
detailed diagram, see page
.
Settings
(page
(page
(page
), and
).
0
AI
FBA
Setpoint
sources
0
AI
FBA
Setpoint 1/2
selection
0
27.12
27.13
27.14
27.15
27.16
27.18
27.19
PID
0
AI
FBA
Actual value
sources
0
AI
FBA
…
Actual value
1/2 selection
Содержание ACQ810
Страница 1: ...ABB industrial drives Firmware manual Standard pump control program for ACQ810 drives ...
Страница 4: ......
Страница 14: ...14 About the manual ...
Страница 56: ...56 Control locations ...
Страница 97: ...Application macros 97 ...
Страница 98: ...98 Application macros ...
Страница 100: ...100 Application macros ...
Страница 101: ...Application macros 101 ...
Страница 106: ...106 Application macros 75 01 Operation mode Multipump 76 01 Enable MF comm Yes ...
Страница 356: ...356 Control through the embedded fieldbus interface ...
Страница 366: ...366 Control through a fieldbus adapter ...
Страница 374: ...374 Control block diagrams ...