YASKAWA E-V-MD Series - Tuning-Less Function

8 Adjustments
8.2.1 Tuning-less Function
8-14
8.2 Tuning-less Function
The tuning-less function is enabled in the factory settings. If resonance is generated or excessive vibration
occurs, refer to 8.2.2 Tuning-less Levels Setting Procedure and change the set value of Pn170.2 for the rigidity
level and the set value in Pn170.3 for the load level.
8.2.1 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.
(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.
∗ Operate using SigmaWin+.
CAUTION
• The tuning-less function is enabled in the factory settings. A sound may be heard for a moment when the
SV_ON command is received 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 SV_ON command is received. For details on the automatic notch filter, refer
to (3) Automatically Setting the Notch Filter on the next page.
• If vibration occurs, set the load level to tuning-less load level 2 in parameter Pn170 or lower the rigidity
level.
Parameter Meaning When Enabled
Classification
Pn170
n.0 Disables tuning-less function.
After restart Setup
n.1
[Factory setting]
Enables tuning-less function.
n.0
[Factory setting]
Used as speed control.
n.1
Used as speed control and host controller used as
position control.
Function Availability Remarks
Vibration detection level
initialization
Available –
Advanced autotuning Not available
Disable the tuning-less function by setting Pn170.0 to 0
before executing advanced autotuning.
Advanced autotuning by reference Not available –
One-parameter tuning Not available –
Anti-resonance control
adjustment function
Not available –
Vibration suppression function Not available –
EasyFFT Available
While this function is being used, the tuning-less function
cannot be used. After completion of the EasyFET, it can
be set again.
Friction compensation Not available –
Gain switching Not available –
Offline moment of inertia
calculation
Not available
Disable the tuning-less function by setting Pn170.0 to 0
before executing this function.
Mechanical analysis Available
While this function is being used, the tuning-less function
cannot be used. After completion of the analysis, it can be
used again.