1-52 Min. Speed Normal Magnetizing [Hz]
Range: Function:
Use this parameter along with 1-50 Motor
Magnetizing at Zero Speed.
0.0 Hz* [0.0-10.0 Hz] Set frequency required for normal
magnetizing current. If frequency is set
lower than motor slip frequency, 1-50
Motor Magnetizing at Zero Speed is
inactive.
Illustration 4.2
1-55 U/f Characteristic - U
Range: Function:
This parameter is an array parameter [0-5]
and is only functional when 1-01 Motor
Control Principle is set to [0] U/f.
0.0 V* [0.0-999.9 V] Enter voltage at each frequency point to
manually form a U/f characteristic
matching motor. Frequency points are
defined in 1-56 U/f characteristics - F.
1-56 U/f Characteristic - F
Range: Function:
This parameter is an array parameter [0-5]
and is only functional when 1-01 Motor
Control Principle is set to [0] U/f.
0.0
Hz*
[0.0-1000.0
Hz]
Enter frequency points to manually form a
U/f characteristic matching motor. Voltage
at each point is defined in 1-55 U/f
Characteristic - U.
Make a U/f characteristic based on 6
definable voltages and frequencies, see
Illustration 4.3.
Simplify U/f characteristics by merging 2
or more points (voltages and frequencies),
respectively, are set equal.
Illustration 4.3 U/f Characteristics
NOTE
For 1-56 U/f characteristics - F the following applies
[0] ≦ [1] ≦ [2] ≦ [3] ≦ [4] ≦ [5]
4.2.4 1-6* Load Dependent Setting
Parameters for adjusting the load-dependent motor
settings.
1-60 Low Speed Load Compensation
Range: Function:
Use this parameter to gain optimum U/f
characteristic when running at low speed.
100 %* [0-199 %] Enter percentage in relation to load when
motor runs at low speed.
Change-over point is automatically
calculated based on motor size.
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