8.4 Tuning-less Function
8.4.1 Application Restrictions
8-12
8.4
Tuning-less Function
The tuning-less function performs autotuning to obtain a stable response regardless of the type
of machine or changes in the load. Autotuning is started when the servo is turned ON.
8.4.1
Application Restrictions
The following application restrictions apply to the tuning-less function.
*
: Yes ×: No
CAUTION
The tuning-less function is disabled during torque control.
The Servomotor may momentarily emit a sound the first time the servo is turned ON after
the Servomotor is connected to the machine. This sound is caused by setting the automatic
notch filter. It does not indicate a problem. The sound will not be emitted from the next time
the servo is turned ON.
The Servomotor may vibrate if it exceeds the allowable load moment of inertia.
If that occurs, set the tuning-less load level to 2 (Pn170 = n.2
) or reduce the tuning-
less rigidity level (Pn170 = n.
X
).
To ensure safety, make sure that you can perform an emergency stop at any time when you
execute the tuning-less function.
Function
Executable?
*
Remarks
Vibration Detection
Level Initialization
–
Moment of Inertia
Estimation
×
Disable the tuning-less function (Pn170 = n.
0) before
you execute moment of inertia estimation.
Autotuning without
Host Reference
×
Disable the tuning-less function (Pn170 = n.
0) before
you execute autotuning without a host reference.
Autotuning with Host
Reference
×
–
Custom Tuning
×
–
Adjust Anti-Reso-
nance Control
×
–
Vibration Suppression
×
–
Easy FFT
The tuning-less function is disabled while you execute Easy
FFT and then it is enabled when Easy FFT has been com-
pleted.
Friction Compensa-
tion
×
–
Gain Selection
×
–
Mechanical Analysis
The tuning-less function is disabled while you execute
mechanical analysis and then it is enabled when mechanical
analysis has been completed.
