Danfoss VLT AutomationDrive FC 300 Programming Manual page 55

3 Parameter descriptions
1-56 U/f Characteristic - F
Range:
Application [Application dependant]
dependent*
3
1-58 Flystart Test Pulses Current
Range:
30 %* [0 - 200 %]
1-59 Flystart Test Pulses Frequency
Range:
200 %* [0 - 500 %]
3.3.6 1-6* Load Depend. Setting
Parameters for adjusting the load-dependent motor settings.
1-60 Low Speed Load Compensation
Range:
100 %* [0 - 300 %]
Motor size
0.25 kW - 7.5 kW
54
Function:
Enter the frequency points to manually form a U/f-characteristic matching the motor.
The voltage at each point is defined in par. 1-55
This parameter is an array parameter [0-5] and is only accessible when par. 1-01
Principle U/f
is set to [0].
Function:
Control the percentage of the magnetizing current for the pulses used to detect the motor direction.
Reducing this value will reduce the generated torque. 100% means nominal motor current. The
parameter is active when par. 1-73
VVC plus .
Function:
Control the percentage of the frequency for the pulses used to detect the motor direction. Increasing
this value will reduce the generated torque. 100% means 2 times the slip frequency. The parameter
Flying Start
is active when par. 1-73
Function:
Enter the % value to compensate voltage in relation to load when the motor is running at low speed
and obtain the optimum U/f characteristic. The motor size determines the frequency range within
which this parameter is active.
Change over
< 10 Hz
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
FC 300 Programming Guide
U/f Characteristic - U
.
Flying Start
is enabled. This parameter is only available in
is enabled. This parameter is only available in VVC
Motor Control
plus
.