YASKAWA JEPMC-MP2300-Y Series

6.5
Example of Setting Motion Parameters for the Machine
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6.5 Example of Setting Motion Parameters for the Machine
Set the following seven motion parameters to enable motion control that suits the machine’s specifi-
cations.
• Reference unit
• Electronic gear
• Axis Type
• Position Reference
• Speed Reference
• Acceleration/Deceleration Settings
• Acceleration/Deceleration Filter Settings
The following tables provide details of setting examples for the above items.
6.5.1 Reference Unit
Pulses, millimeters, degrees, or inches can be used as the reference unit for motion control. The refer-
ence unit is specified in Command Unit (motion fixed parameter 4).
The minimum reference unit that can be specified is determined by the setting of Number of Decimal
Places (motion fixed parameter 5).
6.5.2 Electronic Gear
In contrast to the reference unit input to the Machine Controller, the moving unit in the mechanical
system is called the “output unit.” The electronic gear converts position or speed units from reference
units to output units for the mechanical system without going through an actual mechanism, such as a
gear.
When the axis at the motor has rotated m times and the mechanical configuration allows the axis at
the load to rotate n times, this electronic gear function can be used to make the reference unit equal to
the output unit.
The electronic gear function is enabled when the following settings are made:
• Fixed Parameter 6: Command Unit per Revolution
• Fixed Parameter 8: Gear Ratio [MOTOR]
• Fixed Parameter 9: Gear Ratio [LOAD]

The electronic gear is disabled when pulse is specified as the Command Unit.
The following setting example uses ball screw and rotating table workpieces.
Motion Fixed Parameter 5:
Number of Decimal
Places
Motion Fixed Parameter 4: Command Unit (Reference Unit)
0: pulse 1: mm 2: deg 3: inch
0: 0 digits 1 pulse 1 mm 1 deg 1 inch
1: 1 digits 1 pulse 0.1 mm 0.1 deg 0.1 inch
2: 2 digits 1 pulse 0.01 mm 0.01 deg 0.01 inch
3: 3 digits 1 pulse 0.001 mm 0.001 deg 0.001 inch
4: 4 digits 1 pulse 0.0001 mm 0.0001 deg 0.0001 inch
5: 5 digits 1 pulse 0.00001 mm 0.00001 deg 0.0001 inch
R
R
Minimum
reference
unit
R
R
R