CAUTION!
Use Easy FFT when the servo gain is low, such as in the initial stage of
servo tuning. If you execute Easy FFT after you increase the gain, the
machine may vibrate depending on the machine characteristics or gain
balance.
Frequency
waveform
reference
Response
SERVOPACK
Servomotor
Travel Distance
T
ravel Dis
tance
Fig. 316: Easy FFT - Frequency Waveform Reference
Easy FFT is built into the SERVOPACK for compatibility with previous products. Normally
use autotuning without a host reference for tuning.
Check the following settings before you execute Easy FFT.
n The parameters must not be write prohibited.
n The main circuit power supply must be ON.
n The test without a motor function must be disabled (Pn00C = n.0).
n There must be no alarms.
n There must be no hard wire base block (HWBB).
n The servo must be OFF.
n There must be no overtravel.
n An external reference must not be input.
Use the following procedure for Easy FFT.
1.
Click the Servo Drive Button in the workspace of the Main Window of the Sig-
maWin+.
2. Select Easy FFT in the Menu Dialog Box.
ð
The Easy FFT Dialog Box will be displayed.
Click the Cancel Button to cancel Easy FFT. You will return to the main window.
Preparations
Operating Procedure
Sigma-7 Series SERVOPACKs
Tuning
Diagnostic Tools > Easy FFT
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 427
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