4-2 Function Mode Online Auto-Tuning Function •Online auto-tuning compensates for changes in motor parameters resulting from a motor temperature rise or other factor, thus ensuring stable operation. •This function is applicable to 1st/2nd control, not to 3rd control. Note the following before use: •Be sure to perform the offline auto-tuning before the online auto-tuning. •This function calculates online auto-tuning data during offline auto-tuning. Even with a general- purpose motor, perform offline auto-tuning once. •After the motor is stopped, online auto-tuning is performed for 5 seconds max. (For tuning R1 and R2, this function performs DC excitation once.
The tuning result is not displayed.) If the RUN command is input during this period, priority is given to the RUN command, and the online auto- tuning is aborted. (The tuning result is not reflected.) •With "DC injection braking during stop" selected, online auto-tuning starts after DC injection braking is completed. •If FOC and SON are allocated to terminals, online auto-tuning is not performed. 4 Functions Operating Procedure (1) Set motor parameter selection H002 to "02" (online auto-tuning enabled). (Set auto-tuning selection H001 to "00" (disabled).) (2) Turn on the RUN command.
(The Inverter automatically performs online auto-tuning during stop.) Secondary Resistance Compensation Function (Temperature Compensation) •This function compensates for speed fluctuations resulting from motor temperature changes, when "sensorless vector control", "0-Hz sensorless vector control", or "sensor vector control" is selected as the control method. Use thermistor PB-41E (SHIBAURA ELECTRONICS). •To use this function, set thermistor selection b098 to "02" (NTC). (With other thermistors and settings, the motor temperature cannot be detected correctly.) 4-109 Parameter No. Function name Data Default setting Unit H002/H202 Motor parameter selection 00: Standard motor parameter 01:
Auto-tuning parameter 02: Auto-tuning parameter (Online auto-tuning data enabled.) 00 Parameter No. Function name Data Default setting Unit P025 Secondary resistance compensation enable/disable selection 00: Disabled 01: Enabled 00