Danfoss VLT AutomationDrive FC 300 Programming Manual page 143

Parameter Descriptions
14-31 Current Lim Ctrl, Integration Time
Range: Function:
Size related [0.002 - 2 s] Controls the current limit control
*
integration time. Setting it to a
lower value makes it react faster. A
setting too low leads to control
instability.
14-32 Current Lim Ctrl, Filter Time
Range:
Size related [1 - 100 ms]
*
14-35 Stall Protection
Option: Function:
14-35 Stall Protection is active in Flux mode only.
[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.
3.15.4 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
zation (AEO) mode in 1-03 Torque Characteristics.
14-40 VT Level
Range: Function:
NOTE
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.
NOTE
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 related [40 - 75 Enter the minimum allowable magnet-
*
%] isation for AEO. Selection of a low
value reduces energy loss in the
motor, but can also reduce resistance
to sudden load changes.
NOTE
This parameter is not active when 1-10 Motor Construction
is set to [1] PM non salient SPM.
®
VLT AutomationDrive Programming Guide
14-42 Minimum AEO Frequency
Range:
10 Hz
NOTE
This parameter is not active when 1-10 Motor Construction
is set to [1] PM non salient SPM.
Function:
14-43 Motor Cosphi
Range:
Size
related
3.15.5 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
This parameter is only available for FC 302. 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 Select [1] On to ensure that the frequency converter
Illustration 3.60 RFI Filter
®
MG33MG02 - VLT is a registered Danfoss trademark
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
0.95 ] 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.
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.
complies with EMC standards.
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