Instruction manual

58
 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 Yaskawa standard motor
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 manufacturer is driven, the required torque characteristics or
speed control characteristics may not be maintained because the con-
stants are not suitable. Set the following constants so that they match the
required motor constants.
* Setting depends on Inverter capacity. (Refer to pages 207 and 208.)
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
Resistance
0.001 Ω
(less than 10 Ω)
0.01 Ω
(10 Ω or more)
0.000 to
65.50 Ω
*
n036 Motor Rated Current 0.1 A 0% to 150%
of Inverter
rated current
*
n110 Motor No-load Current 1% 0% to 99%
(100% =
motor rated
current)
*