6.3 Parameters: 1-** Load and Motor
6.3.1 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. All parameters from
1-01 Motor Control Principle (included) to 1-81 Min Speed for
Function at Stop [RPM] (included) are read only. Only
1-13 Compressor Selection remains accessible for
compressor selection.
1-00 Configuration Mode
Option: Function:
Select the application control principle to be
used when a Remote Reference (via analog
input) 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) to the input signal over the
compressor speed range.
[3] Process Enables the use of process control in the
frequency converter. The process control
parameters are set in parameter groups 7-2*
Process PID Feedback and 7-3* Process PID
Control.
NOTE
This parameter cannot be adjusted while the motor is
running.
1-13 Compressor Selection
Range: Function:
The default setting of most of the parameters
in the frequency converter (e.g. motor data,
limits, ramps etc.) depends upon the
compressor and system refrigerant selected for
the frequency converter.
The frequency converter selects the default
compressor based upon the power size and
voltage range for the frequency converter.
Under normal circumstances this should not
be changed. During test/repair situations a
different compressor can be selected – or if
the system is not using the default refrigerant.
NOTE
If the compressor selection is changed,
then all dependent parameters reset to
default and any user settings will be lost.
Size
dependent.
[] Select the compressor/refrigerant combination
for the system.
Parameter Descriptions
Operating Instructions VLT
®
CDS302 and CDS303
52 MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor
6
6
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