2) notch filter – Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - MECHATROLINK-II Communications Reference User Manual

Page 226

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5.9 Compatible Adjustment Function

5-73

5

Adjustm

e

nts

(2) Notch Filter

The notch filter can eliminate specific frequency elements generated by the vibration of sources such as reso-

nance of the shaft of a ball screw. The notch filter puts a notch in the gain curve at the specific vibration fre-
quency. The frequency characteristics near the notch can be reduced or removed with this filter. A higher Q

value produces a sharper notch and phase delay.

The notch filter can be enabled or disabled with Pn408.

Set the machine's vibration frequency as a parameter of the notch filter.

Q value = 0.7

Q value = 1.0

Notch Filter

Frequency (Hz)

-300

-200

-100

0

100

2

10

10

3

10

4

Gain

(db)

-300

-200

-100

0

100

2

10

10

3

10

4

Notch Filter

Frequency (Hz)

Gain

(db)

2

10

10

3

10

4

-400

-300

-200

-100

0

Notch Filter

Frequency (Hz)

Phase

(deg)

2

10

10

3

10

4

-400

-300

-200

-100

0

Notch Filter

Frequency (Hz)

Phase

(deg)

Parameter

Meaning

When Enabled Classification

Pn408

n.

0

[Factory setting]

Disables 1st notch filter.

Immediately

Setup

n.

1

Enables 1st notch filter.

n. 0
[Factory setting]

Disables 2nd notch filter.

n. 1

Enables 2nd notch filter.

Pn409

1st Notch Filter Frequency

Classification

Setting Range

Setting Unit

Factory Setting

When Enabled

50 to 5000

1 Hz

5000

Immediately

Tuning

Pn40A

1st Notch Filter Q Value

Classification

Setting Range

Setting Unit

Factory Setting

When Enabled

50 to 1000

0.01

70

Immediately

Tuning

Pn40B

1st Notch Filter Depth

Classification

Setting Range

Setting Unit

Factory Setting

When Enabled

0 to 1000

0.001

0

Immediately

Tuning

Pn40C

2nd Notch Filter Frequency

Classification

Setting Range

Setting Unit

Factory Setting

When Enabled

50 to 5000

1 Hz

5000

Immediately

Tuning

Speed

Position

Torque

Speed

Position

Torque

Speed

Position

Torque

Speed

Position

Torque

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