Danfoss VLT FC 100 Series Programming Manual page 48

Parameter Description
1-40 Back EMF at 1000 RPM
Range: Function:
Size related [ 10. - 9000 Set the nominal back EMF for the
*
V] motor when running at 1,000 RPM.
This parameter is only active when
1-10 Motor Construction is set to PM
motor [1] (Permanent Magnet Motor).
3.3.6 1-5* Load Indep. Setting
1-50 Motor Magnetization at Zero Speed
Range:
100 % [0 - 300 %]
*
NOTE!
1-50 Motor Magnetization at Zero Speed will not have effect
when 1-10 Motor Construction = [1] PM, non-salient SPM.
1-51 Min Speed Normal Magnetizing [RPM]
Range: Function:
Size [10 - 300 Set the required speed for normal
related RPM] magnetizing current. If the speed is set
*
lower than the motor slip speed,
1-50 Motor Magnetization at Zero Speed
and 1-51 Min Speed Normal Magnetizing
[RPM] are of no significance.
Use this parameter along with
1-50 Motor Magnetization at Zero Speed.
See Table 3.7.
NOTE!
1-51 Min Speed Normal Magnetizing [RPM] will not have
effect when 1-10 Motor Construction = [1] PM, non-salient
SPM.
1-52 Min Speed Normal Magnetizing [Hz]
Range: Function:
Size [ 0.3 - Set the required frequency for normal
related 10.0 Hz] magnetizing current. If the frequency is
*
set lower than the motor slip frequency,
1-50 Motor Magnetization at Zero Speed
and 1-51 Min Speed Normal Magnetizing
[RPM] are inactive.
Use this parameter along with
1-50 Motor Magnetization at Zero Speed.
See Table 3.7.
NOTE!
1-52 Min Speed Normal Magnetizing [Hz] will not have effect
when 1-10 Motor Construction = [1] PM, non-salient SPM.
®
VLT HVAC Drive Programming Guide
1-58 Flystart Test Pulses Current
Range:
Size
related
Function:
NOTE!
See description of 1-70 PM Start Mode for an overview of
the relation between the PM Flying Start parameters.
1-59 Flystart Test Pulses Frequency
Range:
Size
related
NOTE!
Do NOT set this parameter too high in high inertia
applications.
3.3.7 1-6* Load Depend. Setting
1-60 Low Speed Load Compensation
Range:
100 %
MG11CD22 - VLT ® is a registered Danfoss trademark
Function:
[ 0 - Set the magnitude of the magnetizing current
0. %] for the pulses used to detect the motor
*
direction. The value range and function
depends on parameter 1-10 Motor Construction:
[0] Asynchron: [0-200%]
Reducing this value will reduce the generated
torque. 100% means full nominal motor
current. In this case, the default value is 30%.
[1] PM non-salient: [0-40%]
A general setting of 20% is recommended on
PM motors. Higher values can give increased
performance. However, on motors with back
EMF higher than 300VLL (rms) at nominal
speed and high winding inductance (more
than 10mH) a lower value is recommended to
avoid wrong speed estimation. The parameter
is active when 1-73 Flying Start is enabled.
Function:
[ 0 - The parameter is active when 1-73 Flying Start
0. %] is enabled. The value range and function
*
depends on parameter 1-10 Motor Construction:
[0] Asynchron: [0‒500%]
Control the percentage of the frequency for
the pulses used to detect the motor direction.
Increasing this value will reduce the generated
torque. In this mode, 100% means 2 times the
slip frequency.
[1] PM non-salient: [0-10%]
This parameter defines the motor speed (in %
of nominal motor speed) below which the
Parking function (see 2-06 DC Brake Current
and 2-07 DC Braking Time will become active.
This parameter is only active when 1-70 PM
Start Mode is set to [1] Parking and only after
starting the motor.
[0 - 300 %]
*
3
Function:
3-21
3