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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-6 Motor Parameters (Group H)
7
7-6 Motor Parameters (Group H)
This section describes the motor parameters and the related functions including the auto-tuning
function.
• Use this function to measure and automatically set the motor parameter data required for the
sensorless vector control, 0-Hz sensorless vector control, or sensor vector control.
• To use the sensorless vector control, 0-Hz sensorless vector control, or sensor vector control method
using a motor whose motor parameter data is unknown, perform offline auto-tuning to measure the
motor parameter values.
• Before using the online auto-tuning function, be sure to perform offline auto-tuning.
• This function is applicable to the 1st and 2nd control methods only. It cannot be used for the 3rd
control method.
• For the offline auto-tuning function, refer to 6-2 Sensorless Vector Control on page 6-4.
• Online auto-tuning adjusts the motor parameter values according to changes such as a temperature
rise in the motor, thus ensuring stable operation.
• This function is applicable to the 1st and 2nd control methods only. It cannot be used for the 3rd
control method.
• For the online auto tuning function, refer to 6-2 Sensorless Vector Control on page 6-4.
• Set the motor parameters according to your motor.
• To use two or more motors using a single Inverter in the constant torque characteristics, special
reduced torque characteristics, or free V/f setting control mode, calculate the total capacity of the
motors and select the closest value in the Motor Capacity setting.
• Using the automatic torque boost function with improper motor parameter settings may result in
torque reduction or motor hunting.
• For motor parameters, refer to 6-2 Sensorless Vector Control on page 6-4.
Offline Auto-Tuning Function
Online Auto-Tuning Function
Motor Parameter Selection
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