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Program features 103
Application control
Application macros
Application macros are predefined application parameter edits and I/O configurations.
See chapter
(page
Process PID control
There is a built-in process 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 reference (setpoint) is connected to the drive
instead of a speed reference. An actual value (process 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).
Process PID control operates on a 2 ms time level.
The simplified block diagram below illustrates the process PID control. For a more
detailed block diagram, see page
.
The control program contains two complete sets of process PID controller settings
that can be alternated whenever necessary; see parameter
.
Note:
Process PID control is only available in external control; see section
Process
PID
AI1
Process
actual
values
AI2
• • •
D2D
FBA
Setpoint
Speed, torque or
frequency
reference chain
Filter
Limitation
Содержание ACS880-01 Series
Страница 1: ...ABB industrial drives Firmware manual ACS880 ESP control program option N5600 ...
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Страница 12: ...12 Table of contents ...
Страница 20: ...20 Introduction to the manual ...
Страница 22: ...22 Using the control panel ...
Страница 28: ...28 Control locations and operating modes ...
Страница 145: ...Application macros 145 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 146: ...146 Application macros ...
Страница 502: ...502 Parameters ...
Страница 606: ...606 Fault tracing ...
Страница 662: ...662 Control chain diagrams ...
Страница 664: ...Contact us www abb com drives www abb com drivespartners 3AXD50000041193 Rev A EN EFFECTIVE 2017 06 30 ...