Danfoss VLT DriveMotor FCP 106 Programming Manual page 93

Parameters
to 33 are not active until the frequency converter is no
longer near the current limit.
By using a digital input set to [2] Coast inverse or [3] Coast
and reset inv., the motor does not use the ramp down
time, since the frequency converter is coasted.
14-30 Current Lim Ctrl, Proportional Gain
Range: Function:
100 % [0 - 500 %] Enter the proportional gain value for the
*
current limit controller. Selection of a high
value makes the controller react faster. Too
high a setting leads to controller
instability.
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: Function:
Size related [1 - 100 ms] Sets a time constant for the current
*
limit controller low-pass filter.
4.11.5 14-4* Energy Optimization
Parameters for adjusting the energy optimization level in
both variable torque (VT) and automatic energy optimi-
zation (AEO) mode.
Automatic energy optimization is only active if
parameter 1-03 Torque Characteristics, is set for [3] Auto
Energy Optim.
14-40 VT Level
Range: Function:
NOTICE
90 % [40 -
*
90 %]
This parameter cannot be adjusted
while the motor runs.
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.
14-41 AEO Minimum Magnetisation
Range: Function:
66 % [40 - Enter the minimum allowable magnetization
*
75 %] for AEO. Selection of a low value reduces
energy loss in the motor, but can also
reduce resistance to sudden load changes.
MG03N202
Programming Guide
14-44 d-axis current optimization for IPM
Range:
100
%
*
4.11.6 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-51 DC-Link Voltage Compensation
Option: Function:
[0] Off The overmodulation for output voltage is off to avoid
[1] On
*
14-55 Output Filter
Select whether an output filter is present.
Option:
[0]
*
[1]
[3]
4.11.7 14-6* Auto Derate
This group contains parameters for automatic derating of
the output current of the frequency converter.
14-61 Function at Inverter Overload
Is used if there is steady overload beyond the thermal limits
(110% for 60 s).
Option:
[0] Trip
*
[1] Derate Reduces pump speed to decrease the load on the
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Function:
[0 - This parameter is available only when
200 %] parameter 1-10 Motor Construction is set to [2]
PM, salient IPM, non-Sat.
Normally VVC + PM control automatically
optimizes d-axis demagnetizing current based on
d-axis and q-axis settings. When
parameter 1-10 Motor Construction is set to [2]
PM, salient IPM, non-Sat, use this parameter to
compensate the saturation effect at high load.
Usually, decreasing this value improves the
efficiency. However, 0% means no optimization
and the d-axis current is zero (not
recommended).
torque ripple on the motor shaft.
Enables the overmodulation for output voltage to
obtain an output voltage up to 15% greater than the
mains voltage.
No Filter
Sine-Wave Filter
Sine-Wave Filter with Feedback
Function:
The frequency converter trips and issues an alarm.
power section, allowing this to cool down.
4 4
Function:
91