NOTE
1-51 Min Speed Normal Magnetising [RPM]
will not have
effect when
= [1] PM, non salient
SPM.
1-52 Min Speed Normal Magnetising [Hz]
Range:
Function:
Size
related
*
[ 0.3 -
10.0 Hz]
Set the required frequency for normal
magnetising current. If the frequency is
set lower than the motor slip frequency,
1-50 Motor Magnetisation at Zero Speed
and
1-51 Min Speed Normal Magnetising
are inactive.
Use this ameter along with
. See
.
NOTE
1-52 Min Speed Normal Magnetising [Hz]
will not have effect
when
= [1] PM, non salient SPM.
1-58 Flystart Test Pulses Current
Range:
Function:
Size
related
*
[ 0 -
0. %]
Set the magnitude of the magnetizing current
for the pulses used to detect the motor
direction. The value range and function
depends on parameter
:
[0] Asynchron: [0-200%]
Reducing this value will reduce 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
10mH) a lower value is recommended to avoid
wrong speed estimation. The parameter is
active when
is enabled.
1-59 Flystart Test Pulses Frequency
Range:
Function:
Size
related
*
[ 0
- 0.
%]
The parameter is active when
is
enabled. The value range and function depends
on parameter
:
[0] Asynchron: [0-500%]
Control the percentage of the frequency for the
pulses used to detect the motor direction.
Increasing this value will reduce the generated
torque. In this mode 100% means 2 times the
slip frequency.
[1] PM non salient: [0-10%]
Par. 2-01 = “0%”: Sets the motor frequency
below which the active test pulses defined in
par. 1-72 will be used (above this speed a
1-59 Flystart Test Pulses Frequency
Range:
Function:
passive measurement scheme is used instead).
The maximum value in this case is 2% (of the
nominal motor frequency). For motors with
higher back EMF a lower setting can be used.
Parameter 2-01 > “0%”: Sets the motor
frequency below which a “parking” function via
DC Brake will be active. In this case no motor
speed estimation will be performed. The
maximum value in this case is 10% (of the
nominal motor frequency).
NOTE: Care should be taken not to set this
parameter too high in high inertia applications.
3.3.6 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.
Motor size [kW]
Change over [Hz]
0.25 -7.5
< 10
11-45
< 5
55 -550
< 3-4
NOTE
1-60 Low Speed Load Compensation
will not have effect
when
= [1] PM, non salient SPM.
130BA046.11
60%
0%
100%
U
m
Changeover
f
out
Par.1-60
Par.1-61
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CC.02 - VLT
®
is a registered Danfoss trademark
43
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