3.3 Parameters: 1-** Load and Motor
3.3.1 1-0* General Settings
Define whether the Adjustable frequency drive 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 serial communication bus) 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*.
[1]
Speed
closed loop
Enables Speed closed-loop control with
feedback. Obtain full holding torque at 0
RPM.
For increased speed accuracy, provide a
feedback signal and set the speed PID
control.
[2]
Torque
Enables torque closed-loop control with
feedback. 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
Adjustable frequency drive. 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
Flux sensorless
[2] and
Flux with encoder feedback
[3].
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.
[0]
Motor feedb. P1-02
[1]
*
24V encoder
A and B channel encoder, which can
only be connected to the digital input
terminals 32/33. 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*
Parameter Descriptions
FC 300 Programming Guide
MG33MD22 - VLT
®
is a registered Danfoss trademark
3-13
3
3
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