Vacon 100 INDUSTRIAL - Page 207

When the parameter Motor Type has the value Induction Motor, and when this parameter is
changed, these parameters are set to their default values.
•
P3.1.4.2 Field Weakening Point Frequency
•
P3.1.4.3 Voltage at Field Weakening Point
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P3.1.4.4 U/f Midpoint Frequency
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P3.1.4.5 U/f Midpoint Voltage
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P3.1.4.6 Zero Frequency Voltage
P3.1.4.2 FIELD WEAKENING POINT FREQUENCY (ID 602)
Use this parameter to set the output frequency at which the output voltage reaches the field
weakening point voltage.
P3.1.4.3 VOLTAGE AT FIELD WEAKENING POINT (ID 603)
Use this parameter to set the voltage at the field weakening point as a percentage of the
motor nominal voltage.
Above the frequency at the field weakening point, the output voltage stays at the set
maximum value. Below the frequency at the field weakening point, the U/f curve parameters
control the output voltage. See the U/f parameters P3.1.4.1, P3.1.4.4 and P3.1.4.5.
When you set the parameters P3.1.1.1 (Motor nominal voltage) and P3.1.1.2 (Motor nominal
frequency), the parameters P3.1.4.2 and P3.1.4.3 automatically receive related values. To
have different values for P3.1.4.2 and P3.1.4.3, change these parameters only after you set
the parameters P3.1.1.1 and P3.1.1.2.
P3.1.4.4 U/F MIDPOINT FREQUENCY (ID 604)
Use this parameter to set the middle point frequency of the U/f curve.
NOTE!
This parameter gives the middle point frequency of the curve if the value of P3.1.4.1
is programmable.
P3.1.4.5 U/F MIDPOINT VOLTAGE (ID 605)
Use this parameter to set the middle point voltage of the U/f curve.
NOTE!
This parameter gives the middle point voltage of the curve if the value of P3.1.4.1 is
programmable.
P3.1.4.6 ZERO FREQUENCY VOLTAGE (ID 606)
Use this parameter to set the zero frequency voltage of the U/f curve.
The default value for the parameter is different for each unit size.
P3.1.4.7 FLYING START OPTIONS (ID 1590)
Use this parameter to set the flying start options.
The parameter Flying Start Options has a checkbox selection of values.
PARAMETER DESCRIPTIONS VACON · 207
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