Danfoss FC 300 Design Manual page 164

FC 300 Design Guide
The table shows the number of poles 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 number of poles, not pairs of
poles. The adjustable frequency drive creates the
initial setting of par. 1-39 based on par. 1-23 Motor
Frequency and par. 1-25 Motor Nominal Speed.
This parameter cannot be adjusted while
the motor is running.
1-4* LCP Keypad
"
Enable or disable the individual keys on
the LCP panel.
1-40 Back EMF at 1000 RPM
Range:
10 - 1000 V
Function:
Set the nominal back EMF for the motor when
running at 1000 RPM. This parameter is only
active when par. 1-10 Motor Design is set toPM
motor [1] (Permanent Magnet Motor).
This parameter is available for FC 302 only.
This parameter cannot be adjusted while
the motor is running.
1-41 Motor Angle Offset
Range:
0 - 65535 N/A
Function:
Enter the correct offset angle between the PM
motor and the index position (single-turn) of the
attached encoder or resolver. The value range of
0 – 65535 corresponds to 0 - 2 * pi (radians). To
obtain the offset angle value: After drive start-up
apply DC-hold and enter the value of par. 16-20
Motor Angle into this parameter.
This parameter is only active when par. 1-10
Motor Design is set to PM, non-salient SPM
[1] (Permanent Magnet Motor).
This parameter cannot be adjusted while
the motor is running.
1-5* Load Indep. Setting
"
Parameters for setting the load-independent
motor settings.
default setting ( ) display text
*
164
How to Program
Use this par. along with par. 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.
*
500 V
Set the required speed for normal magnetizing
current. If the speed is set lower than the motor
*
slip speed, par. 1-50 Motor Magnetization at Zero
0 N/A
Speed and par. 1-51 are of no significance.
Use this par. along with par. 1-50. See
drawing for par. 1-50.
Set the required frequency for normal magnetising
current. If the frequency is set lower than the
motor slip frequency, par. 1-50 Motor Magnetisation
at Zero Speed and par. 1-51 Min Speed Normal
Magnetising [RPM]. are inactive.
Use this par. along with par. 1-50. See
drawing for par. 1-50.
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
1-50 Motor Magnetization at Zero Speed
Range:
0 - 300 %
Function:
1-51 Min Speed Normal Magnetizing [RPM]
Range:
10 - 300 RPM
Function:
1-52 Min Speed Normal Magnetizing [Hz]
Range:
0 - 10 Hz
Function:
*
100%
*
15 RPM
*
0 Hz