Danfoss VLT AutomationDrive FC 302 Programming Manual page 151

Parameter Descriptions
14-35 Stall Protection
Option: Function:
[0] Disabled Disables stall protection in field-weakening flux
mode and might cause the motor to be lost.
[1] Enabled Enables stall protection in field-weakening flux
*
mode.
14-36 Fieldweakening Function
Select the field weakening function mode in Flux mode.
Range: Function:
0 [Auto] In this mode, the frequency converter calculates the
*
optimal torque output.
Measured DC-link voltage determines the phase-to-
phase motor voltage. Magnetising reference is
based on the actual voltage and utilises the
information about the model of the motor.
1 [1/x] The frequency converter reduces torque output.
The frequency converter sets the magnetising
reference inversely proportional to the speed using
a static curve that represents the relationship
between DC-link voltage and the speed.
3.15.6 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
sation (AEO) mode in parameter 1-03 Torque Characteristics.
14-40 VT Level
Range: Function:
NOTICE
66 % [40 - 90
*
%]
This parameter cannot be adjusted
while the motor is running.
Enter the level of motor magnetisation at low
speed. Selection of a low value reduces
energy loss in the motor, but also reduces
load capability.
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non salient SPM.
14-41 AEO Minimum Magnetisation
Range: Function:
Size [40 - 75 Enter the minimum allowable magneti-
related %] sation for AEO. Selection of a low value
*
reduces energy loss in the motor, but
can also reduce resistance to sudden
load changes.
®
VLT AutomationDrive FC 301/302 Programming Guide
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non salient SPM.
14-42 Minimum AEO Frequency
Range:
10 Hz
*
NOTICE
This parameter is not active when 1-10 Motor
Construction is set to [1] PM non salient SPM.
14-43 Motor Cosphi
Range:
Size
related
*
3.15.7 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
This parameter is available for FC 302 only. It is not relevant to
FC 301 due to different design and shorter motor cables.
Option: Function:
[0] Off Select [0] Off if the frequency converter is fed by an
[1] On
MG33MI02 - Rev. 2013-11-20
Function:
[5 - 40 Hz] Enter the minimum frequency at which the
Automatic Energy Optimisation (AEO) is to
be active.
Function:
[0.40 - The Cos(phi) setpoint is automatically set
0.95 ] for optimum AEO performance. This
parameter should normally not be
altered. However in some situations it
may be necessary to enter a new value
to fine-tune.
isolated mains source (IT mains).
If a filter is used, select [0] Off during charging to
prevent a high leakage current making the RCD switch.
In this mode, the internal RFI filter capacitors between
chassis and the mains RFI filter circuit are cut-out to
reduce the ground capacity currents.
Select [1] On to ensure that the frequency converter
complies with EMC standards.
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