YASKAWA SVC - Linear Scale Pitch and Rated Speed

5.1 Motion Parameters
5.1.8 Linear Scale Pitch and Rated Speed
5-15
5
Machine-Specic Motion Control
5.1.8 Linear Scale Pitch and Rated Speed
When a linear motor is used, set the following fixed parameters according to the specifications
of the linear motor.
• No. 6 (Linear Scale Pitch)
• No. 34 (Rated Speed)
• No. 36 (Number of Pulses per Linear Scale Pitch)
Example Settings Based on the Linear Motor Specifications
 Example Settings 1
The following table lists example settings for the following linear motor specifications.
• Linear scale pitch: 20 (μm)
• Serial converter resolution: 8 (bits)
• Rated speed: 1.5 (m/s)
If an exponential acceleration/deceleration filter is used with the SVR Function Module, you can
use the setting for the OW
3B setting parameter (Bias Speed for Indexed Deceleration/
Acceleration Filter).
If the speed goes higher than the value of OW
3B, the exponential acceleration/deceleration
filter is enabled.
Important
OW3B
Exponential acceleration/deceleration lter is disabled.
Exponential acceleration/deceleration lter is enabled.
Fixed parame-
ter No. 4
(Reference
Unit Selection)
Unit and Number of Digits
below the Decimal Point for
the Linear Scale Pitch and
Rated Speed
Example Settings
pulse
Linear scale pitch: μm
Rated speed: 0.1 m/s
Linear scale pitch: 20 (μm)
Rated speed: 15 (0.1 m/s)
Number of pulses per linear scale pitch: 256 (pulses) = 2
8
mm
Number of digits below the
decimal point: 3
Linear scale pitch: 20 (μm)
Rated speed: 15 (0.1 m/s)
Number of pulses per linear scale pitch: 256 (pulses) = 2
8
μm
Number of digits below the
decimal point: 0
Linear scale pitch: 20 (μm)
Rated speed: 15,000 (0.1 mm/s)
Number of pulses per linear scale pitch: 256 (pulses) = 2
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1. In the following case, set fixed parameter No. 34 (Rated Speed) in units of 0.1 m/s.
• When fixed parameter No. 4 (Reference Unit Selection) is set to 0 (Pulses)
• When fixed parameter No. 6 (Linear Scale Pitch) is set in μm
2. In the following case, set fixed parameter No. 34 (Rated Speed) in units of 0.1 mm/s.
• When fixed parameter No. 6 (Linear Scale Pitch) is set in nm
Important