YASKAWA E-V Series User Manual page 279

Display after
Step
Operation
4
5
Run ready status
6
Display blinks
7
Servomotor
small movement
8
Detection result
example
IMPORTANT
If the operation ended normally but it took two second or more, the detection accuracy may not be good. Set the
reference amplitude little higher than 15 in step 4 and re-execute the operation. More accurate resonance may be fre-
quency detected.
Though increasing reference amplitude increases the detection accuracy, the vibration and noise occurring in the
machine will increase momentarily. Increase an amplitude value little by little, observing the result.
9
10
Display blinks
Pn408=n. 1
11 Pn409=1375 (Hz)
Keys
Press the UP or DOWN Key to set a reference amplitude.
Reference amplitude setting: 1 to 800
Note:
• At the initial execution of Fn206, do not change the refer-
ence amplitude setting, but starts from the initial value
15. Though increasing reference amplitude increases the
detection accuracy, the vibration and noise occurring on
MODE/SET DATA/
the machine will increase momentarily. Increase an
amplitude value little by little, observing the result.
• The setting value of the reference amplitude setting is
stored in Pn456.
Press the DATA/SHIFT Key for approximately one second
to enter the run ready status.
MODE/SET DATA/
Press the MODE/SET Key to enter Servo ON status (the
motor power ON)
Note:
Press the MODE/SET Key to turn the servo OFF. "F" is
MODE/SET DATA/
displayed to indicate the run ready status.
In the Servo ON status (the servomotor power ON), press
the UP Key (forward) or the DOWN Key (reverse). The
servomotor performs a few to-and-from movements within
10 mm in automatic operation. The motor performs such
movements for approximately 1 to 45 seconds. During this
operation, the display shown on the left blinks.
Note:
MODE/SET DATA/
• Do not enter the machine's working area, because the ser-
vomotor moves. Some noise may result.
• Press the MODE/SET Key to stop the servomotor. No
detection is executed. "F." is displayed to indicate the run
ready status (step 5).
At normal completion of the detection, "E_FFt" stops blink-
ing and the detected resonant frequency is displayed. When
failing to detect, "F----" is displayed.
To end the vibration monitor, press the DATA/SHIFT Key
for less than one second. To set the detected value, pro-
ceed to step 11.
MODE/SET DATA/
Press the DATA/SHIFT Key for approximately one second.
The servo turns OFF (the servomotor power OFF) and the
utility function mode display appears.
MODE/SET DATA/
After the detection completes normally, press the MODE/
SET Key. The optimum notch filter for the detected fre-
quency is automatically set. When the notch filter is set
correctly (Pn408, Pn409), the display "donE" blinks.
When the 1st notch filter frequency was already set
(Pn408=n
(Pn40C). When the 2nd notch filter frequency
MODE/SET DATA/
(Pn408=n. 1
notch filter is unable. If the detected frequency is not
used, set the Pn408=n.
7.18 EasyFFT (Fn206)
Operation
1), sets 2nd notch filter frequency
) was also set, the frequency setting of
0
7
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