Tuning-Less Function - YASKAWA Sigma-V Series User Manual

6 Adjustments

6.2.1 Tuning-less Function

6.2

Tuning-less Function

The tuning-less function is enabled in the factory settings. If resonance is generated or excessive vibration
occurs, refer to 6.2.2 Tuning-less Levels Setting (Fn200) Procedure and change the set value of Pn170.2 for
the rigidity level and the set value in Pn170.3 for the load level.
• The tuning-less function is enabled in the factory settings. A sound may be heard for a moment when the /
S_ON signal is turned ON for the first time after the servo drive is mounted to the machine. This sound
does not indicate any problems; it means that the automatic notch filter was set. The sound will not be
heard from the next time the /S_ON signal is turned ON. For details on the automatic notch filter, refer to
(3) Automatically Setting the Notch Filter on the next page.
• The servomotor may vibrate if the load moment of inertia exceeds the allowable load value.
If vibration occurs, set the mode to 2 in Fn200 or lower the adjustment level.
6.2.1
Tuning-less Function
The tuning-less function obtains a stable response without manual adjustment regardless of the type of
machine or changes in the load.
(1) Enabling/Disabling Tuning-less Function
The following parameter is used to enable or disable the tuning-less function.
Pn170
(2) Application Restrictions
The tuning-less function can be used in position control or speed control. This function is not available in
torque control. The following application restrictions apply to the tuning-less function.
Vibration detection level initialization
(Fn01B)
Advanced autotuning (Fn201)
Advanced autotuning by reference (Fn202)
One-parameter tuning (Fn203)
Anti-resonance control adjustment func-
tion (Fn204)
Vibration suppression function (Fn205)
EasyFFT (Fn206)
Friction compensation
6-12
Parameter
n. 0
Disables tuning-less function.
n. 1
Enables tuning-less function.
[Factory setting]
n. 0
Used as speed control.
[Factory setting]
Used as speed control and host controller used as
n. 1
position control.
Function
CAUTION
Meaning
Availability
Available
• This function can be used when the
moment of inertia is calculated.
Available
• While this function is being used, the
(Some conditions apply)
tuning-less function cannot be used. After
completion of the autotuning, it can be
used again.
Not available
Not available
Not available
Not available
While this function is being used, the tuning-
less function cannot be used. After
Available
completion of the EasyFFT, it can be used
again.
Not available
When Enabled Classification
After restart Setup
Remarks
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