6.5
Example of Setting Motion Parameters for the Machine
6-63
6.5.5 Speed Reference
There are two methods of setting the speed reference for the feed speed or other speeds. One method
involves using reference units and the other method involves setting the percentage (%) of the rated
speed.
The following table shows the parameters relating to speed references.
Parameter Type
Parameter No.
(Register No.)
Name Description
Default
Value
Motion Fixed
Parameters
No. 5
Number of
Decimal Places
Set the number of digits below the decimal point in the
reference unit being input. The minimum reference unit is
determined by this parameter and the Command Unit (fixed
parameter 4).
Example:
Command Unit = mm, Number of Decimal Places = 3
　
1 reference unit = 0.001 mm
3
No. 34
Rated Speed
Set the number of rotations when the motor is rotated at the
rated speed (100% speed). Confirm the motor specifications
before setting this parameter.
3000
No. 36
Encoder
Resolution
Set the number of pulses (the value after multiplication) per
motor rotation.
Example:
For a 16-bit encoder, set 2
16
= 65536.
65536
Motion Setting
Parameters
OW

03
Bit 0 to 3
Speed Units
Set the unit for reference speeds.
　　
0: Reference unit/s
　　
1: 10
n
reference units/min (n: Number of Decimal
Places)
　　
2: 0.01%
　　
3: 0.0001%
1
OL

10
Speed
Reference
Set the feed speed. The unit for this parameter is set in
OW

03, bits 0 to 3.
Example:
When the Number of Decimal Places is set to 3, units are as
follows for the setting of the Speed Unit:
• Speed Unit Set to 0: Reference units/s
　
Pulse unit: 1 = 1 pulse/s
　
mm unit: 1 = 0.001 mm/s
　
Deg unit: 1 = 0.001 deg/s
　
Inch unit: 1 = 0.001 inch/s
• Speed Unit Set to 1: 10
n
reference units/min
　
Pulse unit: 1 = 1000 pulse/min
　
mm unit: 1 = 1 mm/min
　
Deg unit: 1 = 1 deg/min
　
Inch unit: 1 = 1 inch/min
• Speed Unit Set to 2: 0.01%
Set as a percentage of the rated speed (1 = 0.01%)
unrelated to the reference unit setting.
3000
OW

18
Speed Override
Setting an output ratio (%) for the setting allows the
positioning speed to be changed without changing the Speed
Reference setting.
　
Setting unit: 1 = 0.01%
10000
R
R
R
R
R
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