Instruction manual

Special adjustment functions Filter functions

5 - 6

5.1.3 Low-pass filter

When a ballscrew or the like is used, resonance of high frequency may occur as the response

level of the servo system is increased. To prevent this, the low-pass filter is factory-set to be valid

for a torque command. The filter frequency of this low-pass filter is automatically adjusted to the

value in the following expression:

Parameter

Set the operation of the low-pass filter at the second digit of parameter 25.

S000626C

Fig. 5-6: Low-pass filter setting

NOTE In a mechanical system where rigidity is extremely high and resonance is difficult to occur,

setting the low-pass filter to be "invalid" may increase the servo system response to shorten

the settling time.

filter frequency [Hz]

VG2 10×

2π 1GD20.1×+()

------------------------------------------------=

Low-pass filter

0: valid (automatic adjustment)  initial value

1: invalid