E6582062
6. [Advanced] How to use parameters 6-84
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2) Selecting auto-tuning setting
1: Reset motor parameters (0 after execution)
Set motor parameters <F402: Automatic torque boost>, <F412: Leakage inductance>, and
<F416: Motor no load current> to default setting values (same motor parameter values as a 4
pole general purpose motor with same capacity as the inverter).
2: Auto-tuning at run command (0 after execution)
Perform auto-tuning when the motor starts for the first time after settings are made and
automatically set <F402: Automatic torque boost> and <F412: Leakage inductance> while
considering the motor wiring.
3: Auto-tuning at TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
When the assigned input terminal is ON, make an auto-tuning and automatically set <F402:
Automatic torque boost> and <F412: Leakage inductance>.
This setting allows auto-tuning while the motor is stopped; use this function when the motor
cannot run following the auto-tuning due to some reason related to the operation of the
machinery.
However, if standby signal is OFF, this function will not be enabled.
To make an auto-tuning again, tern input terminal off once, then turn on again.
6: Auto-tuning at run command during TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
When the assigned input terminal is ON, always make an auto-tuning and automatically set
<F402: Automatic torque boost> and <F412: Leakage inductance> at startup.
7: Auto-tuning F402 only at run command during TB ON
Assign "66: Offline auto-tuning" (67 is the inversion signal) to the digital input terminal.
Always make an auto-tuning at startup when the motor starts for the first time after the
assigned input terminal is ON and set <F402: Automatic torque boost> only.
3) Cautions during offline auto-tuning
• Offline auto-tuning must be performed with the motor connected but in a completely stopped
state.
Due to residual voltage, tuning may not be properly executed immediately after running
motor is stopped.
• There would be almost no rotation of the motor during offline auto-tuning, but you must keep
in mind that voltage is still applied during this time.
• During auto-offline tuning, "Atn" will be displayed on the LCD screen.
• Offline auto-tuning takes a few seconds. If any failure is found, tripping will occur with auto-
tuning error "Etn1" or "Etn2", and motor parameters will not be set.
• Offline auto-tuning cannot be performed on special motors such as a high-speed motor or
high-slip motor. Calculate the motor parameters using "Setting method 3".
• If offline auto-tuning cannot be executed or auto-tuning error "Etn1" or "Etn2" occurs, perform
manual setting using "Setting method 4".
■ Setting method 3: Make auto-tuning of motor parameter after automatic setting.
Make auto-tuning after setting vector control/automatic torque boost/automatic energy-saving and
performing motor parameters auto calculation.
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