Low-Pass Filter - Mitsubishi Electric MELSERVO MRJ2S-B Instruction Manual

Special adjustment functions
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:
filter frequency [Hz]
Parameter
Set the operation of the low-pass filter at the second digit of parameter 25.
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.
5 - 6
×
VG2 10
= ------------------------------------------------
( ×
2π 1 GD2 0.1
+
0
Low-pass filter
0: valid (automatic adjustment)
1: invalid
)
initial value
Filter functions
S000626C