
4.ADJUSTMENT FANUC AC SPINDLE MOTOR αi series B-65280EN/05
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(6) Observing data
The table below shows the setting method for observing measurement
data on the spindle check board and descriptions of observation data.
At the time of measurement (adjustment), observe data listed in the
table by using measuring devices such as the spindle check board and
an oscilloscope. Fig. 4.2.6 shows an example of data observation at
the time of measurement.
Channel Setting address Settings Descriptions
d-05 (data number) 167 FNCFRQ : Frequency of disturbance torque command
d-06 (shift amount) 0 or 1
d-07 (shift direction) 0
CH1
d-08 (offset) 1
±128 Hz/±5 V with shift amount 0
±256 Hz/±5 V with shift amount 1
d-09 (data number) 168 TFUNCG : Ratio of amplitude of TQCMDB to amplitude of DTQCMD (gain)
d-10 (Shift amount) 6 or 7
d-11 (shift direction) 0
CH2
d-12 (offset) 1
±200 %/±5 V with shift amount 6
±400 %/±5 V with shift amount 7
Fig. 4.2.6 Example for observing disturbance input function data
625mV
1sec
2.5V
CH1:FNCFRQ
(167.0.0.1, 64Hz/div)
CH2:TFUNCG
(168.7.0.1, 50%/div)
Resonance point :
600Hz
Resonance
* The data shows that strong resonance is present at about 600 Hz.