YASKAWA SGDV series User Manual page 177

5 Adjustments
5.3.1 Advanced Autotuning
Advanced autotuning performs the following adjustments.
• Moment of inertia ratio
• Gains (e.g., position loop gain and speed loop gain)
• Filters (torque reference filter and notch filter)
• Friction compensation
• Anti-resonance control
• Vibration suppression (Mode = 2 or 3)
Refer to 5.3.3 Related Parameters for parameters used for adjustments.
• Because advanced autotuning adjusts the SERVOPACK during automatic operation, vibration or over-
shooting may occur. To ensure safety, perform advanced autotuning in a state where the SERVOPACK
can come to an emergency stop at any time.
(1) Preparation
Check the following settings before performing advanced autotuning.
The message "NO-OP" indicating that the settings are not appropriate will be displayed, if all of the following
conditions are not met.
• The main circuit power supply must be ON.
• There must be no overtravel.
• The servomotor power must be OFF.
• The control method must not be set to torque control.
• The gain selection switch must be in manual switching mode (Pn139.0 = 0).
• Gain setting 1 must be selected.
• The test without a motor function must be disabled (Pn00C.0 = 0).
• All alarms and warning must be cleared.
• The hardwire baseblock (HWBB) must be disabled.
• The write prohibited setting parameter (Fn010) must be set to Write permitted (P.0000).
• Jcalc must be set to ON to calculate the load moment of inertia when the tuning-less function is enabled
(Pn170.0 = 1: factory setting) or the tuning-less function must be disabled (Pn170.0 = 0).
Note: If advanced autotuning is started while the SERVOPACK is in speed control, the mode will change to position con-
trol automatically to perform advanced autotuning. The mode will return to speed control after completing the
adjustment. To perform advanced autotuning in speed control, set the mode to 1 (Mode = 1).
(2) When Advanced Autotuning Cannot Be Performed
Advanced autotuning cannot be performed normally under the following conditions. Refer to 5.4 Advanced
Autotuning by Reference (Fn202) and 5.5 One-parameter Tuning (Fn203) for details.
• The machine system can work only in a single direction.
• The operating range is within 0.5 rotation.
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CAUTION