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6-10
6-4 Electronic Gear Function
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
6
Applied Functions
6-4 Electronic Gear Function
Outline of Operation
The motor can be rotated for the number of pulses obtained by multiplying the position command
values by the electronic gear ratio.
This function supports position and full closing control.
In speed or torque control, the number of encoder pulses from the motor is divided by the
electronic gear and converted to the command unit for feedback.
Parameters Requiring Settings
*1. Switching among Electronic Gear Ratio Numerators 2 to 4 (Pn500 to Pn502) is performed using the electronic gear
switching input (GESEL1/GESEL2).
The settings of GESEL1 and GESEL2 are as follows.
Parameter
number
Parameter name
Explanation
Reference
Pn008
Electronic Gear Integer
Setting
Set the number of command pulses corresponding to 1
motor rotation.
Pn009
Electronic Gear Ratio
Numerator 1
Set the numerator of the electronic gear ratio.
If the set value is 0, the encoder resolution is automatically
set as the numerator.
• 131,072 for a 17-bit absolute encoder
• 1,048,576 for a 20-bit incremental encoder
Pn010
Electronic Gear Ratio
Denominator
Set the denominator of the electronic gear ratio.
Pn500
Electronic Gear Ratio
Numerator 2
*1
Set the numerator of the electronic gear ratio 2.
Pn501
Electronic Gear Ratio
Numerator 3
*1
Set the numerator of the electronic gear ratio 3.
Pn502
Electronic Gear Ratio
Numerator 4
*1
Set the numerator of the electronic gear ratio 4.
GESEL1
GESEL2
Applicable parameters
OFF
OFF
Electronic Gear Ratio Numerator 1
(Pn009)
ON
OFF
Electronic Gear Ratio Numerator 2
(Pn500)
OFF
ON
Electronic Gear Ratio Numerator 3
(Pn501)
ON
ON
Electronic Gear Ratio Numerator 4
(Pn502)