Danfoss VLT AutomationDrive FC 301 Programming Manual page 47

Parameter Descriptions
1-47 Torque Calibration
Option: Function:
•
Parameter 1-30 Stator Resistance (Rs).
•
Parameter 1-33 Stator Leakage Reactance
(X1).
•
Parameter 1-34 Rotor Leakage Reactance
(X2).
•
Parameter 1-37 d-axis Inductance (Ld).
1-48 Inductance Sat. Point
Range: Function:
NOTICE
Size [1 -
related 500 %]
*
Run an AMA to set the value of this
parameter. Edit the value manually
only when the application requires a
value other than determined by AMA.
Select the d-axis inductance saturation point.
The frequency converter uses this value to
optimize the performance of SynRM motors.
Select the value that matches the point
where the inductance equals the mean value
of parameter 1-37 d-axis Inductance (Ld) and
parameter 1-44 d-axis Inductance Sat. (LdSat),
as percentage of nominal current.
1-49 q-Axis Inductance Saturation Point
Range: Function:
NOTICE
Size [ 0 -
related 200 %]
*
Run an AMA to set the value of this
parameter. Edit the value manually
only when the application requires a
value other than determined by AMA.
Enter the q-Axis inductance saturation point.
The frequency converter uses this value to
optimize the performance of IPM motors.
Select the value that matches the point
where the inductance equals the average
value of parameter 1-38 q-axis Inductance
(Lq) and parameter 1-45 q-axis Inductance
Sat. (LqSat), as percentage of nominal
current.
MG33MO02
Programming Guide
3.2.8 1-5* Load Indep. Setting
1-50 Motor Magnetisation at Zero Speed
This parameter is not visible on the LCP.
Range:
100 %
*
1-51 Min Speed Normal Magnetising [RPM]
This parameter is not visible on the LCP.
Range:
Size
related
*
1-52 Min Speed Normal Magnetising [Hz]
Range:
12.5
Hz
*
Danfoss A/S © 01/2018 All rights reserved.
Function:
NOTICE
[0 -
300 %]
Parameter 1-50 Motor Magnetisation at
Zero Speed has no effect when
parameter 1-10 Motor Construction = [1]
PM, non-salient SPM.
Use this parameter along with
parameter 1-51 Min Speed Normal Magnetising
[RPM] to obtain a different thermal load on the
motor when running at low speed.
Enter a value which is a percentage of the rated
magnetizing current. If the setting is too low,
the torque on the motor shaft may be reduced.
Magn. current
100%
Par.1-50
Par.1-51
Par.1-52
Illustration 3.7 Motor Magnetization
Function:
NOTICE
[10 -
300 RPM]
Parameter 1-51 Min Speed Normal
Magnetising [RPM] has no effect
when parameter 1-10 Motor
Construction=[1] PM, non-salient
SPM.
Set the required speed for normal
magnetizing current. If the speed is set
lower than the motor slip speed,
parameter 1-50 Motor Magnetisation at
Zero Speed and parameter 1-51 Min Speed
Normal Magnetising [RPM] are of no
significance.
Use this parameter along with
parameter 1-50 Motor Magnetisation at
Zero Speed. See Table 3.6.
Function:
[0 - Set the required frequency for normal
250.0 Hz] magnetizing current. If the frequency is set
lower than the motor slip frequency,
3 3
Hz
RPM
45