4.6 Auto-Tuning
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 89
Start-Up Programming
& Operation
4
■ Notes on Rotational Auto-Tuning
• For optimal performance, Auto-Tuning should only be done with the motor uncoupled from the load for applications
requiring high performance over a wide speed range.
• If motor and load can not be uncoupled, the load should be lower 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.
■
Notes on Stationary Auto-Tuning for Terminal Resistance Only
• If the motor cable lead length has been significantly modified after Auto-Tuning has already been performed, perform
Stationary Auto-Tuning with the new cables.
• Perform when using motor cables longer than 50 m with V/f Control.
WARNING! Electrical Shock Hazard. When executing stationary Auto-Tuning for line-to-line resistance only, the motor does not rotate,
however, power is applied. Do not touch the motor until Auto-Tuning is completed. Failure to comply may result in injury from electrical
shock.
◆ Auto-Tuning Interruption and Fault Codes
If tuning results are abnormal or the STOP key is pressed before completion, Auto-Tuning will be interrupted and a fault
code will be displayed on the digital operator.
Figure 4.10
Figure 4.10 Auto-Tuning Interruption Display
◆ Performing Auto-Tuning
■ Auto-Tuning Procedure
Auto-Tuning should generally be performed in the following steps.
1. Refer to Before Auto-Tuning the Drive on page 88.
2. Determine which type of Auto-Tuning best fits the application requirements following Figure 4.11.
A – Normal Auto-Tuning Display B – Auto-Tuning Interrupted
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