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SD710 Series Servo Drive User's Manual Chapter 7 Auxiliary Functions
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(2) Operation steps
The procedure is shown below.
Steps
Panel display
Keys used
Operations
1
Press MODE/SET to select the auxiliary function. Adjust
by pressing UP or DOWN until Fn000 is displayed.
2
Adjust by pressing UP or DOWN until Fn400 is displayed.
3
Press the DATA/SHIFT key for about 1 second, then the
display will read as shown on the left, which indicates that
the current encoder over-temperature detection point
temperature is 90° C.
Note: The current encoder over-temperature is used as
the reference point for initial entry.
4
Press the MODE/SET key, then the display will be as
shown on the left to enter the encoder over-temperature
detection point temperature threshold setting state.
5
The "UP", "DOWN" and "SHIFT" keys are used to adjust
the corresponding values.
Note: The maximum value is set to 130° C. When set to 0,
the over-temperature detection function is turned off.
6
(blinking)
Press MODE/SET and the set temperature value will be
written to the Eeprom of the encoder, while "donE" flashes
for about 1 second.
7
When "donE" is displayed, the display returns to the status
shown on the left picture.
8
Press the DATA/SHIFT key for about 1 second to return to
the Fn400 display.
7.27 EasyFFT (Fn401)
The EasyFFT function transmits the periodic waveform command from the servo driver to the servo motor, allowing the
servo motor to rotate slightly several times within a certain period of time, causing the machine to vibrate. The servo driver
detects the resonant frequency based on the vibration generated by the machine, and then sets the corresponding notch
filter based on the detected resonant frequency. The notch filter can effectively remove high frequency vibrations and
noise.
If vibration is generated with a loud sound (abnormal sound) during operation, perform this function after servo OFF.
CAUTION
● When this function is executed, the servo motor will rotate slightly.
Do not touch the servo motor or
the unit during execution. Failure to do so may cause personal injury.
● This function must be used in a state where the gain is low such as the initial stage of servo
adjustment. If the Easy FFT function is executed after a higher gain is set, the machinery may vibrate
due to the mechanical characteristics and gain balance.
(1) Pre-implementation recognition matters
Before performing the A-type vibration suppression control function, be sure to check the following settings, because if
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
MODE/SET
Data/
!