Danfoss VLT AutomationDrive FC 300 Series, Programming Manual, Page: 35 / 211

3.3 Parameters: 1-** Load and Motor
3.3.1 1-0* General Settings
Define whether the frequency converter operates in speed
mode or torque mode; and whether the internal PID
control should be active or not.
1-00 Configuration Mode
Option: Function:
Select the application control principle to be
used when a Remote Reference (i.e. via
analog input or fieldbus) is active. A Remote
Reference can only be active when
3-13 Reference Site is set to [0] or [1].
[0]
*
Speed open
loop Enables speed control (without feedback
signal from motor) with automatic slip
compensation for almost constant speed at
varying loads.
Compensations are active but can be
disabled in the Load/Motor parameter group
1-0*. The speed control parameters are set in
parameter group 7-0*.
[1] Speed
closed loop Enables Speed closed loop control with feed-
back. Obtain full holding torque at 0 RPM.
For increased speed accuracy, provide a
feedback signal and set the speed PID
control. The speed control parameters are set
in parameter group 7-0*.
[2] Torque Enables torque closed loop control with feed-
back. Only possible with “Flux with motor
feedback” option,
1-01 Motor Control Principle .
FC 302 only.
[3] Process Enables the use of process control in the
frequency converter. The process control
parameters are set in parameter groups 7-2*
and 7-3*.
[4] Torque
open loop
Enables the use of torque open loop in VVC
+
mode ( 1-01 Motor Control Principle ). The
torque PID parameters are set in parameter
group 7-1*.
[5] Wobble Enables the wobble functionality in
30-00 Wobble Mode to 30-19 Wobble Delta
Freq. Scaled .
[6] Surface
Winder Enables the surface winder control specific
parameters in parameter group 7-2* and
7-3*.
[7] Extended
PID Speed
OL Specific parameters in parameter group 7-2*
to 7-5*.
[8] Extended
PID Speed
CL Specific parameters in parameter group 7-2*
to 7-5*.
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
1-55 U/f
Characteristic - U and 1-56 U/f Characteristic -
F .
[1] VVC+ 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 Flux Vector control without encoder
feedback, for simple installation and
robustness against sudden load changes. FC
302 only.
[3] Flux w/
motor feedb very high accuracy speed and torque
control, suitable for the most demanding
applications. FC 302 only.
The best shaft performance is normally achieved using
either of the two Flux Vector control modes
[2] Flux
sensorless and [3] Flux with encoder feedback .
NOTE
This parameter cannot be adjusted while the motor is
running.
NOTE
An overview of possible combinations of the settings in
1-00 Configuration Mode and 1-01 Motor Control Principle
can be found in 4.1.1 Conversion .
1-02 Flux Motor Feedback Source
Option: Function:
Select the interface at which to receive
feedback from the motor.
[1]
*
24V encoder A and B channel encoder, which can be
connected to the digital input terminals
32/33 only. Terminals 32/33 must be
programmed to
No operation .
[2] MCB 102 Encoder module option which can be
configured in parameter group 17-1*
FC 302 only.
[3] MCB 103 Optional resolver interface module which
can be configured in parameter group
17-5*
[4] MCO Encoder
1 X56 Encoder interface 1 of the optional
programmable motion controller MCO 305.
Parameter Descriptions
VLT
®
AutomationDrive Programmming Guide
34 MG33ME02 - VLT
®
is a registered Danfoss trademark
3 3