9 Adjustments
9.3.1 Advanced Autotuning by Reference
9-20
9.3
Advanced Autotuning by Reference
Adjustments with advanced autotuning by reference are described below.
9.3.1
Advanced Autotuning by Reference
Advanced autotuning by reference is used to automatically achieve optimum tuning of the SERVOPACK in
response to the user reference inputs from the host controller.
Advanced autotuning by reference is performed generally to fine-tune the SERVOPACK after advanced auto-
tuning of the SERVOPACK has been performed.
If the moment of inertia ratio is correctly set to Pn103, advanced autotuning by reference can be performed
without performing advanced autotuning.
Advanced autotuning by reference performs the following adjustments.
• Gains (e.g., position loop gain and speed loop gain)
• Filters (torque reference filter and notch filter)
• Anti-resonance control
Refer to
9.3.2 Related Parameters
for parameters used for adjustments.
Advanced autotuning by reference starts adjustments based on the set speed loop gain
(Pn100). Therefore, precise adjustments cannot be made if there is vibration when start-
ing adjustments. In this case, make adjustments after lowering the speed loop gain
(Pn100) until vibration is eliminated.
CAUTION
• Because advanced autotuning by reference adjusts the SERVOPACK during automatic operation, vibra-
tion or overshooting may occur. To ensure safety, perform advanced autotuning by reference in a state
where the SERVOPACK can come to an emergency stop at any time.
• Be sure to set a suitable value for the moment of inertia ratio (Pn103) using advanced autotuning before
executing the advanced autotuning by reference. If the setting greatly differs from the actual moment of
inertia ratio, normal control of the machine may not be possible, and vibration may result.
Movement
Speed
Host controller
Reference
Response
Reference
Travel distance
