Danfoss VLT AutomationDrive FC 301 Programming Manual page 85

VLT AutomationDrive FC 301/302
Programming Guide
Permanent magnet motors
Line-to-line back
EMF in RMS value
at 1000 RPM
speed (mech)
Illustration 32: Machine Parameter Definitions of Back EMF of PM Motors
Parameter 1-38 q-axis Inductance (Lq)
Table 91: Parameter 1-38 q-axis Inductance (Lq)
1-38 q-axis Inductance (Lq)
Default value: Size related
Conversion index: -6
Set the value of the q-axis inductance. See the motor datasheet.
Parameter 1-39 Motor Poles
Table 92: Parameter 1-39 Motor Poles
1-39 Motor Poles
Default value: Size related
Conversion index: 0
This parameter cannot be adjusted while the motor is running.
Enter the number of motor poles. The number of motor poles is always an even number as it refers to the total number of poles, not
pairs of poles.
Table 93: Pole Number for Normal Speed Ranges
Poles
2
4
6
The table shows the pole number for normal speed ranges of various motor types. Define motors designed for other frequencies
separately. The motor pole value is always an even number because it refers to the total pole number, not pairs of poles. The drive
creates the initial setting of parameter 1-39 Motor Poles based on parameter 1-23 Motor Frequency and parameter 1-25 Motor Nominal
Speed.
Parameter 1-40 Back EMF at 1000 RPM
Table 94: Parameter 1-40 Back EMF at 1000 RPM
1-40 Back EMF at 1000 RPM
Default value: Size related
Conversion index: 0
Danfoss A/S © 2022.12
Parameter type: Range, 0.001 - 1000 mH
Data type: Int32
Parameter type: Range, 2 - 255
Data type: Uint8
N O T I C E
~n @ 50 Hz
n
2700–2880
1350–1450
700–960
Parameter type: Range, 1 - 9000 V
Data type: Uint16
Parameter Descriptions
Setup: All setups
Change during operation: False
Setup: All setups
Change during operation: False
~n @ 60 Hz
n
3520–3460
1625–1730
840–1153
Setup: All setups
Change during operation: False
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