Danfoss VLT AutomationDrive FC 302 Programming Guide

Permanent magnet motors
e30bc009.11
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
Parameter type: Range, 0.001 - 1000 mH
Setup: All setups
Conversion index: -6
Data type: Int32
Change during operation: False
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
Parameter type: Range, 2 - 255
Setup: All setups
Conversion index: 0
Data type: Uint8
Change during operation: False
N O T I C E
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
~n
n
@ 50 Hz
~n
n
@ 60 Hz
2
2700–2880
3520–3460
4
1350–1450
1625–1730
6
700–960
840–1153
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
Parameter type: Range, 1 - 9000 V
Setup: All setups
Conversion index: 0
Data type: Uint16
Change during operation: False
AU275636650261en-000101 / 130R0334 | 85Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English