Danfoss VLT Decentral Drive FCD 302 Design Manual page 57

Application Examples
1-00 Configu-
ration Mode
[3] Process
Table 4.19 Process PID Control Settings
4 4
Ref.
Handling
Feedback
Handling
Illustration 4.9 Process PID Control Diagram
56
VLT
1-01 Motor Control Principle
U/f plus Flux
VVC
Sensorle
ss
N.A. Process Process
& Speed
+
% [unit]
_
*(-1)
% [unit]
P 7-30
normal/inverse
MG04H102 - VLT
®
Decentral Drive FCD 302
NOTE
Flux w/
The Process Control PID will work under the default
enc. feedb
parameter setting, but tuning the parameters is highly
recommended to optimise the application control
Process &
performance. The two Flux motor control principles are
Speed
specially dependant on proper Speed Control PID tuning
(prior to tuning the Process Control PID) to yield their full
potential.
Process PID
P 7-38
100%
Feed forward
% %
[unit] [speed]
PID
-100%
100%
-100%
®
is a registered Danfoss trademark
0%
0%
Scale to
speed
P 4-10
Motor speed
direction
To motor
control