YASKAWA SGD7S series Product Manual page 573

Panel Display after
Step
Operation
8
(Detection result dis-
play example)
9
10
11 Turn the power supply to the SERVOPACK OFF and ON again after you finish executing Easy FFT.
13.4 Utility Function (Fn) Operations on the Panel Operator
Keys
If detection is completed normally, E_FFt will stop
flashing and the detected resonance frequency will be
displayed. If detection fails, F---- will be displayed.
To check the results, go to step 9. To monitor the reso-
nance frequency without setting the detection result,
press the DATA/SHIFT Key for approximately one sec-
ond and return to step 2.
 IMPORTANT
– If the operation ended normally but it took two sec-
onds or longer, the detection accuracy may not be suf-
ficient. Increase the reference amplitude to a value
higher than 15 to increase the detection accuracy.
Although increasing the reference amplitude will
increase the detection accuracy, the vibration and
noise in the machine will increase momentarily.
Increase the reference amplitude a little at a time and
observe the results.
Press the MODE/SET Key. The optimum notch filter
for the detected resonance frequency will automatically
be set. If the notch filter is set correctly, donE will flash
on the display, and then the display shown on the left
will appear.
If the 1st notch filter frequency is already set (Pn408 =
n.1), the 2nd notch filter frequency will be auto-
matically set (Pn40C).
MODE/SET DATA/
Press the MODE/SET Key to return to step 5.
Note: 1. If both the 1st and 2nd notch filter frequencies are
2. If the frequency detected by this function is not to be
Press the DATA/SHIFT Key for approximately one sec-
ond to return the display to Fn206.
MODE/SET DATA/
13.4.33 Easy FFT (Fn206)
Continued from previous page.
Operation
already set (Pn408 = n.11), no more notch filter
frequencies can be set.
used, set Pn408 to n.0 (Disable notch filter).
13
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