Application Control; Application Macros; Process Pid Control - ABB +N5600 Firmware Instructions

Application control



Application macros

Application macros are predefined application parameter edits and I/O configurations.
See chapter Application macros
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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 658.
Setpoint
AI1
AI2
Process
• • •
actual
values
D2D
FBA
The control program contains two complete sets of process PID controller settings
that can be alternated whenever necessary; see parameter
selection.
Note: Process PID control is only available in external control; see section
control vs. external control
(page 131).
Process
Filter
PID
(page 24).
Program features 103
Limitation
Speed, torque or
frequency
reference chain
40.57 PID set1/set2
Local