6 Programming Features
59
Using Vector Control Mode
Set the Control Mode Selection (n002) to use vector control mode.
n002 = 0: V/f control mode (factory setting)
1: Vector control mode
Precautions for Voltage Vector Control Application
Vector control requires motor constants. The factory settings constants
have been set at the factory prior to shipment. Therefore, when a motor
designed for an Inverter is used or when a motor from any other manu-
facturer is driven, the required torque characteristics or speed control
characteristics may not be maintained because the constants are not suit-
able. Set the following constants so that they match the required motor
constants.
* Setting depends on Inverter capacity. (Refer to pages 245 and 246.)
Adjustment of the Torque Compensation Gain (n103) and the Torque
Compensation Time Constant (n104) is normally not required.
Adjust the torque compensation time constant under the following con-
ditions:
• Increase the setting if the motor generates vibration.
• Reduce the setting if response is slow.
Adjust the Slip Compensation Gain (n111) while driving the load so
that the target speed is reached. Increase or decrease the setting in incre-
ments of 0.1.
Con-
stant
No.
Name Unit Setting
Range
Factory
Setting
n106
Motor Rated Slip
0.1 Hz 0.0 to
20.0 Hz
*
n107
Motor Line-to-
neutral Resis-
tance
0.001 Ω
(less than 10 Ω)
0.01 Ω
(10 Ω or more)
0.000 to
65.50 Ω
*
n036
Motor Rated Cur-
rent
0.1 A 0% to 150%
of Inverter
rated current
*
n110
Motor No-load
Current
1% 0% to 99%
(100% =
motor rated
current)
*
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