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Direct Drive Motor Specifications and Instruction Manual
8 Servo Adjustment
8.1 Servo Adjustment Procedure
The servo parameters must be set before the direct-drive motor can be started up. The servo parameters are input from
the NC. The input method differs according to the NC being used, so refer to each NC Instruction Manual.
When setting the initial setting parameters, perform the following settings.
Measures against the vibration
- Notch filter
- Jitter compensation
- Variable speed loop gain
Refer to the Instruction Manual of each
drive unit for details on the adjustment
method required for each setting.
CAUTION
Perform adjusting the servo in the factory configuration of the machine. When the servo is adjusted without having an
enough running-in or a cover, friction force, machine resonance frequency or resonance gain may be different, resulting in
an incorrect adjustment.
IB-1501068-C
Adjusting servo
Set current loop gain
Set speed loop gain
Vibration occurs?
Yes
No
Set position loop gain
Improve protrusion at quadrant
Improve interpolation control path
Set protective function
Adjusting servo completed
70
Set standard parameter for each motor because
setting values are determined depending on motors
used.
->「Refer to "7.4 List of standard parameters for
direct-drive motor".
Look for the maximum value not causes
machine vibration. The final setting value
should be 70 to 80% of the maximum value at
which the machine does not vibrate.
->「Refer to "8.1.1 Speed loop gain"
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