Danfoss FC 300

For increased speed accuracy, provide a feedback signal and set
the speed PID control.
[2] Torque Connects the encoder speed feedback signal to the encoder in-
put. Only possible with “Flux with motor feedback” option, par.
1-01
Motor control principle .
[3] Process Enables the use of process control in the frequency converter.
The process control parameters are set in par. groups 7-2* and
7-3*.
1-01 Motor Control Principle
Option: Function:
Select which motor control principle to employ.
[0] U/f special motor mode, for parallel connected motors in special
motor applications. When U/f is selected the characteristic of
the control principle can be edited in par. 1-55 and 1-56.
[1] VVCplus Voltage Vector Control principle suitable for most applications.
The main benefit of VVC
plus
operation is that it uses a robust
motor model.
[2] Flux sensorless (FC
302 only)
Flux Vector control without encoder feedback, for simple instal-
lation and robustness against sudden load changes.
[3] Flux w/ motor feed-
back(FC 302 only)
very high accuracy speed and torque control, suitable for the
most demanding applications.
The best shaft performance is normally achieved using either of the two Flux Vector control modes
Flux sensorless [2] and Flux with encoder feedback [3].
This parameter cannot be adjusted while the
motor is running.
1-02 Flux Motor Feedback Source
Option: Function:
Select the interface at which to receive feedback from the mo-
tor.
[1]
*
24 V encoder A and B channel encoder, which can be connected to the digital
input terminals 32/33 only. Terminals 32/33 must be program-
med to
No operation .
[2] MCB 102 Encoder module option which can be configured in par. group
17-1*
This parameter appears in FC 302 only.
[3] MCB 103 Optional resolver interface module which can be configured in
parameter group 17-5*
[4] MCO 305 encoder 1 Encoder interface 1 of the optional programmable motion con-
troller MCO 305.
[5] MCO 305 encoder 2 encoder interface 2 of the optional programmable motion con-
troller MCO 305.
FC 300 Programming Guide 2. How to Programme
MG.33.M2.02 - VLT
®
is a registered Danfoss trademark 43
2