Lust CDA32.006 - Voltage Frequency Control (VFC)

CDA3000 Operation Manual
4-7
4 Commissioning
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Different control methods have special advantages depending on the
application. Three modes of control are available.
For our example please set FOR(2).
In this window you
select the terminal
assignment required
for control of your
application.
As a check, the
terminal diagram and
specimen
applications are
illustrated.
For our example
please set ROT_2.
Meaning Application
VFC
Voltage Frequency Control
(factory setting)
• Pump, fan and extruder applications
• Traction and lifting drive with low dynamics
• Multi-motor operation
SFC
Sensorless Flux Control
• Only for asynchronous
motors
• Dynamic traction, lifting and rotational
drives
• Drives with dynamic load surges
FOR
Field Oriented Regulation
• Encoder is necessary
• only for asynchronous
motors
• Dynamic traction and rotational drives
• Speed control with encoder feedback
Table 4.2 Choice of control method
1. Preset solution...
2. Control method...