Danfoss VLT AutomationDrive FC 301 Programming Manual page 166

Parameter Descriptions
3.15.5 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.
3 3
14-40 VT Level
Range:
66 % [40 -
90 %]
*
14-41 AEO Minimum Magnetisation
Range:
Size [ 40 -
related 200 %]
*
14-42 Minimum AEO Frequency
Range:
Size
related Hz]
*
14-43 Motor Cosphi
Range:
Size [0.40 -
related 0.95]
*
164
Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
NOTICE
This parameter is not active when
parameter 1-10 Motor Construction is set to
[1] PM non-salient SPM.
Enter the level of motor magnetization at low
speed. Selection of a low value reduces energy
loss in the motor, but also reduces load
capability.
Function:
NOTICE
This parameter is not active when
parameter 1-10 Motor Construction is
set to [1] PM non-salient SPM.
Enter the minimum allowable magnetization
for AEO. Selection of a low value reduces
energy loss in the motor, but can also
reduce resistance to sudden load changes.
Function:
NOTICE
[5 - 40
This parameter is not active when
parameter 1-10 Motor Construction is
set to [1] PM non-salient SPM.
Enter the minimum frequency at which
the automatic energy optimisation (AEO)
is to be active.
Function:
The Cos(phi) setpoint is automatically set
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.
Danfoss A/S © 02/2016 All rights reserved.
®
VLT AutomationDrive FC 301/302
3.15.6 14-5* Environment
NOTICE
Perform a power cycle after changing any of the
parameters in group 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.
Option: Function:
[0] Off Select [0] Off if the frequency converter is fed by an
[1] On
*
Illustration 3.62 RFI Filter
14-51 DC Link Compensation
Option: Function:
[0] Off Disables DC-link compensation.
[1] On
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
enclosure 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.
The rectified AC-DC voltage in the frequency converter's
DC-link is associated with voltage ripples. These ripples
can increase in magnitude with increased load. These
ripples are undesirable because they can generate
current and torque ripples. A compensation method is
used to reduce these voltage ripples in the DC link. In
general, DC-link compensation is recommended for
most applications, but pay attention when operating in
field weakening as it can generate speed oscillations at
the motor shaft. In field weakening, it is recommended
to turn DC-link compensation off.
Enables DC-link compensation.
MG33ML02