Danfoss VLT AQUA Drive FC 202 Programming Manual page 49

Parameter Description
1-58 Flystart Test Pulses Current
Range: Function:
Reducing this value reduces the generated
torque. 100% means full nominal motor
current. In this case the default value is 30%.
[1] PM non-salient: [0-40%]
A general setting of 20% is recommended on
PM motors. Higher values can give increased
performance. However, on motors with back
EMF higher than 300VLL (rms) at nominal
speed and high winding inductance (more than
10 mH) a lower value is recommended to avoid
wrong speed estimation. The parameter is
active when parameter 1-73 Flying Start is
enabled.
NOTICE
See description of parameter 1-70 PM Start Mode for an
overview of the relation between the PM Flying Start
parameters.
1-59 Flystart Test Pulses Frequency
Range: Function:
Size [ 0 - The value range and function depends on
related 500 parameter parameter 1-10 Motor Construction:
*
%] [0] Asynchron: [0-500%]
Control the percentage of the frequency for
the pulses used to detect the motor direction.
Increasing this value reduces the generated
torque. In this mode 100% means 2 times the
slip frequency.
[1] PM non-salient: [0-10%]
This parameter defines the motor speed (in %
of nominal motor speed) below which the
Parking function (see parameter 2-06 Parking
Current and parameter 2-07 Parking Time
becomes active. This parameter is only active
when parameter 1-70 PM Start Mode is set to
[1] Parking and only after starting the motor.
3.3.7 1-6* Load Depend. Setting
1-60 Low Speed Load Compensation
Range: Function:
100 % [0 - 300 Enter the % value to compensate voltage in
*
%] relation to load when the motor is running at
low speed and obtain the optimum U/f
characteristic. The motor size determines the
frequency range within which this parameter
is active.
MG20O702
Programming Guide
1-60 Low Speed Load Compensation
Range:
NOTICE
Parameter 1-60 Low Speed Load Compensation does not
have effect when parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
U
m
Par.1-60
100%
60%
0%
Illustration 3.10 Low Speed Load Compensation
1-61 High Speed Load Compensation
Range:
100 %
*
NOTICE
Parameter 1-61 High Speed Load Compensation does not
have effect when parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
Danfoss A/S © Rev. 2014-01-21 All rights reserved.
Function:
Motor size [kW]
0.25-7.5
11-45
55-550
Changeover
Function:
[0 - 300 Enter the % value to compensate voltage in
%] relation to load when the motor is running at
high speed and obtain the optimum U/f
characteristic. The motor size determines the
frequency range within which this parameter
is active.
Motor size [kW]
0.25-7.5
11-45
55-550
Change-over [Hz]
< 10
< 5
3
< 3-4
Par.1-61
f
out
Change-over [Hz]
> 10
< 5
< 3-4
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