10 force reference filter, 10 force reference filter -26, 1) force reference filter – Yaskawa SGDH Linear Sigma Series User Manual

Page 348: Important

10 Adjustments

10.4.10 Force Reference Filter

10-26

10.4.10 Force Reference Filter

As shown in the following diagram, the force reference filter contains one force reference filter and two notch
filters arrayed in series, and each filter operates independently. The notch filters can be enabled and disabled
using the parameters.

Software version earlier than 32 does not have the parameters for the First Stage Notch Filter Q Value
(Pn40A) and the Second Stage Notch Filter (Pn40B and Pn40C).

(1) Force Reference Filter

If you suspect that machine vibration is being caused by the servodrive, try adjusting the force reference filter
time constant. This may stop the vibration. The lower the value, the better the speed control response, but there is
a lower limit that depends on the machine conditions.

Force reference

after filtering

Force reference

befor filtering

First

stage

notch

filter

Pn409

Pn40A

Force

reference

filter

Pn401

Force related

function switch

Pn408

Second

stage

notch

filter

Pn40B

Pn40C

Notch filter

1st-order delay filter

IMPORTANT

Pn401

Force Reference Filter Time Constant

Setting Range

Setting Unit

Factory Setting

Setting Validation

0 to 65,535

(0.00 to 655.35 ms)

0.01 ms

100

(1.00 ms)

Immediately

Speed

Position

Force