
3. α SERIES PARAMETER ADJUSTMENT B-65150E/04
− 62 −
(4) Details of adjustment
<1> Current loop period setting and current loop gain setting
According to the settings of "1) Level-up HRV control" in Table
3.4.1, set the parameters for current control. Set the same period
for the two axes controlled by the same DSP.
With these settings, processing is performed using a current loop
period of 125 µs and a position loop period of 1 ms. The response
of the current loop is improved by a factor of 1.6. In this state,
check the activating sound. If, compared with the past, the
activating sound during a stop increases, change the current loop
gain as follows:
• No. 2040 (Series 16), No. 1852 (Series 15) = 0.6 times the
modified value
• No. 2041 (Series 16), No. 1853 (Series 15) = 0.6 times the
modified value
• No. 2042 (Series 16), No. 1854 (Series 15) = 0
<2> Vibration suppression filter adjustment
As shown in Fig. 3.4.1 (d), the vibration suppression filter is a
filter that attenuates a particular frequency component included in
a torque command. If a strong resonance exceeding 200 Hz is
present in the mechanical system, the vibration suppression filter
is useful for setting a high velocity gain by suppressing resonance.
So, when using level-up HRV control, adjust the vibration
suppression filter before "<3> Velocity loop gain setting." If the
resonance frequency is 200 Hz or less, do not use a vibration
suppression filter.
For resonance frequency measurement using servo adjustment
software, see "(5) Method of resonance frequency measurement
using servo adjustment software."
Fig. 3.4.1 (d) Vibration suppression filter
NOTE
Set the same period for two axes controlled by the
same DSP.
Vibration suppression
filter
Torque command
Level-up HRV
control