4.6 Auto-Tuning
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions 125
Start-Up Programming
& Operation
4
u Before Auto-Tuning the Drive
Check the items below before Auto-Tuning the drive.
n
Basic Auto-Tuning Preparations
• Auto-Tuning requires the user to input data from the motor nameplate or motor test report. Make sure this data is
available before Auto-Tuning the drive.
• For best performance, the drive input supply voltage must be greater than the motor rated voltage.
• To cancel Auto-Tuning, press on the digital operator.
Table 4.8 describes contact input and output terminal operation while Auto-Tuning is being executed.
Table 4.8 Contact Input and Output Operation During Auto-Tuning
WARNING! Sudden Movement Hazard. Inadvertent holding brake release may cause damage to equipment or injury to personnel.
If installed, do not release the mechanical brake during Stationary Auto-Tuning. Ensure that the mechanical brake
release circuit is not controlled by the drive multi-function digital outputs during Stationary Auto-Tuning.
Note: To run the Rotational Auto-Tuning, be sure to disconnect the motor from the machine and check to see that there is nothing
dangerous even if the motor starts to turn around. It could result in a failure of the drive. When the rotational Auto-Tuning is
performed for load-connected motor, the motor parameter could not be calculated accurately and the motor could run unusually.
n Notes on Rotational Auto-Tuning
• Decouple the load from the motor to achieve optimal performance from Rotational Auto-Tuning. Rotational
Auto-Tuning is best suited for applications requiring high performance over a wide speed range.
• If it is not possible to decouple the motor and load, reduce the load so that it is less than 30% of the rated load.
Performing Rotational Auto-Tuning with a higher load will set motor parameters incorrectly, and can cause irregular
motor rotation.
• Ensure the motor-mounted brake is fully released if installed.
• Connected machinery should be allowed to rotate the motor.
u Auto-Tuning Interruption and Fault Codes
If tuning results are abnormal or is pressed before completion, Auto-Tuning will be interrupted and a fault code
will appear on the digital operator.
Figure 4.11
Figure 4.11 Auto-Tuning Aborted Display
Tuning Mode Contact Input Function Contact Output Function
Rotational Auto-Tuning Disabled
Functions the same as during normal
operation
Stationary Auto-Tuning for
Line-to-Line Resistance
Disabled
Maintains the status at the start of
Auto-Tuning
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