Process Pid Control - Danfoss VLT AutomationDrive FC 360 Design Manual

Product Overview

2.5.2 Process PID Control

2 2
The process PID control can be used to control application parameters that can be measured by a sensor (i.e. pressure,
temperature, flow) and affected by the connected motor through a pump, fan, or other connected devices.
Table 2.7 shows the control configurations in which the process control is possible. Refer to chapter 2.3 Control Structures to
see where the speed control is active.
1-00 Configuration Mode
[3] Process
Table 2.7 Control Configuration
NOTICE
The process control PID works under the default parameter setting, but tuning the parameters is recommended to
optimise the application control performance.
Ref.
Handling
% [unit]
Feedback
Handling
% [unit]
Illustration 2.25 Process PID Control Diagram
32
Design Guide
+
_
*(-1)
P 7-30
normal/inverse
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1-01 Motor Control Principle
U/f
Not Available
Process PID
P 7-38
Feed forward
% %
[unit] [speed]
PID
VVC +
Process
100%
0%
0%
Scale to
speed
-100%
100%
-100%
P 4-10
Motor speed
direction
To motor
control
MG06B402