Yaskawa Large Capacity Sigma II Series - Manual (Page 188)

5.1 Smooth Operation
5-5
5
5.1.5 Setting the Torque Reference Filter Time Constant
If there is machine vibration which may be caused by the servodrive, try adjusting the filter
time constant in Pn401. This may stop the vibration.
The above constant is the filter time constant of the torque reference to be set in the SERVO-
PACK. The smaller the value, the faster the speed control response will be. There is, how-
ever, a certain limit depending on machine conditions.
5.1.6 Notch Filter
Vibration in the machine can sometimes be eliminated by using a notch filter for the fre-
quency at which the vibration is occurring.
This parameter can be set to enable the notch filter.
The frequency at which the machine is vibrating is set in the following parameter.
Pn401 Torque Reference Fil-
ter Time Constant Unit:
0.01 ms
Setting
Range:
0 to 65535
Factory
Setting:
100
Speed/Torque
Control,
Position Control
Pn408.0 Notch Filter Selection Factory
Setting:
0
Speed/Torque
Control,
Position Control
Pn408.0 Setting Contents
0 None
1 Notch filter used for torque reference.
Pn409 Notch Filter Frequency Unit:
Hz
Setting
Range:
50 to 2000
Factory
Setting:
2000
Speed/Torque
Control,
Position Control