Speed References - YASKAWA MP2100 Series User Manual

7 Motion Parameters

7.3.5 Speed References

7.3.5 Speed References
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 No.
Parameter Type
Motion Fixed No. 5
Parameters
No. 34
No. 36
Motion Setting OW
Parameters
bit 0 to 3
OL
OW
7-50
Name
(Register No.)
Number of
Decimal Places
Rated Speed
Encoder Resolu-
tion
03, Speed Units
10
Speed Reference
18 Speed Override
Description
Set the number of digits below the decimal point in the input
reference unit. 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
Set the number of rotations when the motor is rotated at the
rated speed (100% speed). Confirm the motor specifications
before setting this parameter.
Set the number of pulses (the value after multiplication) per
motor rotation.
Example:
16
For a 16-bit encoder, set 2 = 65536.
Set the unit for reference speeds.
0: Reference unit/s
n
1: 10 reference unit/min (n: Number of Decimal Places)
2: 0.01%
Set the feed speed. The unit for this parameter is set in
OW 03, bits 0 to 3.
When the Number of Decimal Places is set to 3, units are as
follows for the setting of the Command 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
n
• Speed Unit Set to 1: 10 reference units/min
Pulse unit: 1 = 1000 pulses/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.
This parameter allows the positioning speed to be changed
without changing the Speed Reference setting. Set the speed
as a percentage of the Speed Reference setting.
Setting unit: 1 = 0.01%
Default
Value
3
3000
65536
1
3000
10000