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3 Utility Function Mode
3.2.32 EasyFFT (Fn206)
Step
Display after Operation
2
3
4
5
3-92
Keys
Press the
to the Fn206 execution display.
Note: If the display is not switched and
"NO-OP" is displayed in the status
display, check to make sure that the
required operating conditions are
being met ((1) Preparation) and
take corrective action.
The cursor is on the setting of "Input."
Press the
sweep torque reference amplitude (Pn456)
Setting range: 1 to 800.
Note: When making the initial settings for
EasyFFT, do not change the setting
for the reference amplitude. Start
with the original value of 15.
Increasing reference amplitude
increases the detection accuracy, but
the vibration and noise from the
machine will increase. Increase the
amplitude value little by little.
Press the
power ON. The display "BB" and "Set-
ting" changes to "RUN" and "Ready."
Press the
(reverse run start) Key to run the
servomotor and start the frequency mea-
surement. "Measure" is displayed during
the measurement.
Within a quarter turn, the servomotor will
move forward and then in reverse several
times.
Note:
• Press the
surement. The servomotor stops moving
and the power turns OFF. The detection
of the resonance frequency is not com-
pleted.
• The actions of the servomotor are very
minute in this operation. Also at the
same time, the servomotor emits a noise.
To ensure safety, do not enter the work-
ing envelope of the motor.
(cont'd)
Operation
Key. The display changes
or
Key to set the
Key to turn the servomotor
(forward run start) Key or
Key to cancel the mea-
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