Danfoss VLT DriveMotor FCP 106 Programming Manual page 45

Parameters
Permanent magnet motors
Line to Line Back
Emf in RMS Value
at 1000 rpm
Speed (mech)
Illustration 4.3 Machine parameter definitions of Back EMF of
permanent magnet motors
1-39 Motor Poles
Range: Function:
NOTICE
4 [2 - 100 ]
*
This parameter cannot be adjusted while
the motor is running.
Enter the number of motor poles.
The motor pole value is always an even number,
because it refers to the total number of poles,
not pairs of poles.
1-40 Back EMF at 1000 RPM
Range: Function:
Size related [ 10 - 9000 V] Line-Line RMS back EMF voltage at
*
1000 RPM
1-50 Motor Magnetisation at Zero Speed
Range: Function:
100 [ 0 - Use this parameter along with
% 300.0 parameter 1-52 Min Speed Normal Magnetising
*
%] [Hz] to obtain a different thermal load on the
motor when running at low speed.
Enter a value which is a percentage of the rated
magnetising current. If the setting is too low, the
torque on the motor shaft may be reduced.
Magn. current
90%
Par.1-50
Illustration 4.4 Motor Magnetisation
1-52 Min Speed Normal Magnetising [Hz]
Range: Function:
0 Hz [ 0 - 10.0 Set the required frequency for normal
*
Hz] magnetising current.
Use this parameter along with
parameter 1-50 Motor Magnetisation at Zero
Speed. See Illustration 4.4.
®
VLT DriveMotor FCP 106 and FCM 106 Programming Guide
Par.1-52 Hz
MG03N102 - Rev. 2013-12-02
1-55 U/f Characteristic - U
Range: Function:
Size related [0 - 999 Enter voltage at each frequency point
*
V] to manually form a U/f characteristic
matching motor. Frequency points are
defined in parameter 1-56 U/f Charac-
teristic - F.
1-56 U/f Characteristic - F
Range: Function:
Size [ 0 - Enter frequency points to manually form a U/f
related 400.0 characteristic matching motor. Voltage at each
*
Hz] point is defined in parameter 1-55 U/f Charac-
teristic - U.
Make a U/f characteristic based on 6 definable
voltages and frequencies, see Illustration 4.5.
Simplify U/f characteristics by merging 2 or
more points (voltages and frequencies),
respectively, are set equal.
Motor Voltage
Par 1-55 [x]
1-55[5]
1-55[4]
1-55[3]
1-55[2]
1-55[1]
1-55[0]
1-56
[0]
Illustration 4.5 U/f Characteristic
1-62 Slip Compensation
Range: Function:
0 % [ -400 - Enter the % value for slip compensation to
*
399.0 %] compensate for tolerances in the value of
n . Slip compensation is calculated
M,N
automatically, i.e. on the basis of the rated
motor speed n
1-63 Slip Compensation Time Constant
Range: Function:
0.1 s [ 0.05 - 5.00 Enter the slip compensation reaction speed.
*
s] A high value results in slow reaction, and a
low value results in quick reaction. If low-
frequency resonance problems arise, use a
longer time setting.
1-64 Resonance Dampening
Range: Function:
100 % [ 0 - 500 Enter the resonance dampening value. Set
*
%] 1-64 Resonance Dampening and 1-65
Resonance Dampening Time Constant to help
eliminate high-frequency resonance
problems. To reduce resonance oscillation,
1-56
1-56 1-56 1-56 1-56
[5]
[1]
[2] [3] [4]
Output Frequency
Par 1-56 [x]
.
M,N
43
4 4