User manual

Chapter 5 Parameter Introductions
voltage as the output voltage reference. The value of P9.03 is preset according to the
standard induction motor before delivery. When the energy saving gain coefficient
increases, the output voltage will increases.
P9.04 Energy saving voltage lower limit(50Hz)
Range: 0～120% 【50%】
P9.05 Energy saving voltage lower limit(5Hz)
Range: 0～25% 【12%】
Note:
◆These parameters are used to set the lower limit of output voltage. If the voltage
reference value calculated in the energy saving mode is smaller than the energy saving
voltage lower limit, the energy saving voltage limit will be treated as the output
voltage reference. To prevent the motor stalling at light loads, the energy saving
voltage lower limit must be set. Set voltage limits at 5Hz and 50Hz; the setting value is
obtained by linear interpolation if the frequency is out range of 5Hz to 50Hz. The
setting value is made by the percentage of motor rated voltage.
380V
P9.04
P9.05
5Hz 50HZ
Frequency
Lower limit
V/F curve
Fig. 5-9-2 Energy saving voltage lower limit
◆In the energy saving control mode, the optimum voltage is calculated according to
load power, and the voltage is supplied to the load. However, the set parameter may
vary because of temperature variations or using various manufacturers’ motors;
therefore, the optimum voltage may not be supplied in some cases. Automatic
fine-tuning control voltage maintains highly efficient operation.
P9.06 Time of average power
Range: 1～200*(25ms)【5】
Note:
◆Preset the time of average power calculating in energy-saving control mode. The
setting range of P9.06 is 25ms×(1～200).
P9.07 AVR function
Range: 0～2【2】
1: Enabled always
0: Disabled
2: Disabled in decelerating process
Note:
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