Calculate the moving
value the load shaft
rotates 1 circle
Calculate the actual unit value the load shaft rotates 1 circle
based on reference unit
Calculate the electronic
gear ratio
Calculate the electronic gear ratio based on the formula (B/A)
Set the result as the electronic gear ratio
1. Formula:
Suppose the machine deceleration ratio of motor shaft and load shaft is m/n, calculate the electronic
gear ratio as the below formula:
(when servo motor shaft rotates m circles, load shaft rotates n circles)
If it exceeds the setting range, please reducible the molecular and denominator in the setting range. The
reducible will not affect the using.
2. Reference unit doesn’t mean the precision
Refine the reference unit based on machine precision can improve the servo positioning precision. For
example: in the application of screw, the machine precision can up to 0.01mm, so the reference unit
0.01mm is more accurate than 0.1mm.
2. Example of setting the electronic gear
The example for different loads:
Machine deceleration ratio: 1/1
1-circle rotate angle:
360°
1 reference unit: 0.001mm
P2-02 10000 5
P2-03 6000 3
==
P2-02 30000 25
P2-03 3600 3
==
P2-02 20000 200
P2-03 15700 157
==
5-3-4. Position command filter
The servo can filter the command pulse at certain frequency.
Filter mode selection: select the filter as the following parameters
Select 1-time delay feature or moving average filter.
First-order inertia filter
Select the position command filter
unit value of load shaft rotates 1 circle
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