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3
ADJUSTMENT METHOD
3.1
Quick tuning
To use quick tuning, set [Pr. PA08.0 Gain adjustment mode selection] to "5". When the SON is on, the servo amplifier adjusts
the gain. The characteristic of quick tuning is shown as follows:
• Effective when to reduce the overshoot rather than to shorten the settling time because of the ability to reduce the
overshoot regardless of the machine type or the load size
• Adjustment available without the positioning operation
Restrictions on quick tuning
Quick tuning is not available in the following situations:
• During one-touch tuning
• In torque control
• When using adaptive filter II
Precautions on quick tuning
• Do not use quick tuning in a tandem system.
• Some noise due to the applied vibration torque may occur during quick tuning, but the noise is not an abnormality.
• When the load to motor inertia ratio is more than 100 times, quick tuning cannot adjust the gain appropriately. Adjust the
gain by using an alternative method such as auto tuning.
• When quick tuning is enabled (performed), the time until the servo amplifier actually becomes in the servo-on state after
turning on the servo-on command gets 300 ms longer at a maximum.
• When the torque limit value is less than 30 % of the rated torque, the torque required for quick tuning cannot be generated,
and quick tuning may fail. Set the torque limit value to exceed 30 % of the rated torque for quick tuning.
• If the travel distance in quick tuning exceeds the set value in [Pr. PA34 Quick tuning - Permissible travel distance], the
quick tuning will be stopped.
• [Pr. PB11 Speed differential compensation] will be changed to the initial value if quick tuning is used.
• When friction is 30 % or more of the rated torque, quick tuning may fail. In this case, adjust the gain with one-touch tuning
or auto tuning.
3 ADJUSTMENT METHOD
12
3.1 Quick tuning
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