GE AF-60 LP Programming Manual page 19

*
0.0 Hz [0.0 - 10.0 Hz]
4
1-55 U/f Characteristic - U
Range:
*
0.0 V [0.0 - 999.9 V]
1-56 U/f Characteristic - F
Range:
*
0.0 Hz [0.0 - 1000.0 Hz]
Illustration 4.1: Fig. 1 U/f characteristics
NB!
For par. 1-56 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:
*
100 % [0-199 %]
18
Set frequency required for normal magnetizing current. If frequency is set lower than motor slip frequency, par. 1-50,
Motor Magnetizing at Zero Speed is inactive.
Function:
This parameter is an array parameter [0-5] and is only functional when par. 1-01, Motor Control Principle is set to U/
f [0].
Enter voltage at each frequency point to manually form a U/f characteristic matching motor. Frequency points are
defined in par. 1-56, U/f characteristics - F.
Function:
This parameter is an array parameter [0-5] and is only functional when par. 1-01, Motor Control Principle is set to U/f
[0].
Enter frequency points to manually form a U/f characteristic matching motor. Voltage at each point is defined in par.
1-55, U/f Characteristic - U.
Make a U/f characteristic based on 6 definable voltages and frequencies, see below figure.
Simplify U/f characteristics by merging 2 or more points (voltages and frequencies), respectively, are set equal.
Function:
Use this parameter to gain optimum U/f characteristic when running at low speed.
Enter percentage in relation to load when motor runs at low speed.
AF-60 LP™ Micro Drive Programming Guide