Yaskawa MP2000 Series: Built-in SVB or SVB-01 Motion Module - Manual (Page 161)

5.1 Example Setting of Motion Parameters for the Machine
5.1.8 Linear Scale Pitch and Rated Speed
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5.1.8 Linear Scale Pitch and Rated Speed
When using a linear motor, set the linear scale pitch (fixed parameter No. 6), the rated speed (fixed parameter No. 34),
and the number of pulses per scale pitch (fixed parameter No. 36) according to the linear motor specifications.
( 1 ) Setting Example 1
The following table gives a setting example for these linear motor specifications.
• Linear scale pitch: 20 ( μm)
• Serial converter resolution: 8 (bit)
• Rated speed: 1.5 (m/s)
* When pulse is selected as a reference unit and the Linear Scale Pitch (fixed parameter No. 6) is set in
units of μm, set the Rated Speed (fixed parameter No. 34) in units of 0.1 m/s.
When pulse is selected as a reference unit and the Linear Scale Pitch (fixed parameter No. 6) is set in
units of nm, set the Rated Speed (fixed parameter No. 34) in units of 0.1 mm/s.
( 2 ) Setting Example 2
The following table gives a setting example for these linear motor specifications.
• Linear scale pitch: 400 (nm)
• Serial converter resolution: 9 (bit)
• Rated speed: 1.5 (m/s)
* When pulse is selected as a reference unit and the Linear Scale Pitch (fixed parameter No. 6) is set in
units of μm, set the Rated Speed (fixed parameter No. 34) in units of 0.1 m/s.
When pulse is selected as a reference unit and the Linear Scale Pitch (fixed parameter No. 6) is set in
units of nm, set the Rated Speed (fixed parameter No. 34) in units of 0.1 mm/s.
Command Unit
Linear Scale Pitch and Rated
Speed Setting Units/
Number of Digits below Decimal
Point
Settings of Linear Scale Pitch, Rated Speed,
and Number of Pulses per Scale Pitch
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 Scale Pitch: 256 (pulse) = 2
8
mm
Number of Digits below Decimal
Point : 3
Linear Scale Pitch: 20 ( μm)
Rated Speed: 15 (0.1 m/s)
Number of Pulses per Scale Pitch: 256 (pulse) = 2
8
μm
Number of Digits below Decimal
Point : 0
Linear Scale Pitch: 20 ( μm)
Rated Speed: 15000 (0.1 mm/s)
Number of Pulses per Scale Pitch: 256 (pulse) = 2
8
Command Unit
Linear Scale Pitch and Rated
Speed Setting Units/
Number of Digits below Decimal
Point
Settings of Linear Scale Pitch, Rated Speed,
and Number of Pulses per Scale Pitch
pulse
Linear scale pitch: nm
Rated speed: 0.1 mm/s
*
Linear Scale Pitch: 400 (nm)
Rated Speed: 15000 (0.1 mm/s)
Number of Pulses per Scale Pitch: 512 (pulses) = 2
9
mm
Number of Digits below Decimal
Point : 5
Linear Scale Pitch: 40 (user units)
400 (nm) = 40 (0.00001 mm)
Rated Speed: 15 (0.1 m/s)
Number of Pulses per Scale Pitch: 512 (pulse) = 2
9
μm
Number of Digits below Decimal
Point : 3
Linear Scale Pitch: 400 (user unit)
400 (nm) = 400 (0.001 μm)
Rated Speed: 15000 (0.1 mm/s)
Number of Pulses per Scale Pitch: 512 (pulse) = 2
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