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value the load shaft
rotates 1 circle
load shaft rotates 1 circle
based on reference unit
gear ratio
Calculate the electronic gear ratio based on the formula (B/A)
Set the result as the electronic gear ratio
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.
5-3-3-3. Example of setting the electronic gear
The example for different loads:
Machine deceleration ratio: 1/1
360°
Deceleration ratio: 3/1
Deceleration ratio: 2/1
2500 4
B
2500 4
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 the position command fi
shaft
1 rotate =
unit value of load shaft rotates 1 circle
πD
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