Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual page 106

For profile position mode
Adjust [Pr. PA06 Electronic gear - Numerator] and [Pr. PA07 Electronic gear - Denominator] so that the travel distance set in
the servo amplifier matches the travel distance on the machine. [Motor revolutions (Obj. 6091h: 01h)] and [Shaft revolutions
(Obj. 6091h: 02h)] can also be used for the setting.
Electronic gear
([Pr. PA06]/[Pr. PA07])
([Obj. 6091h: 01h]/[Obj. 6091h: 02h])
Travel distance
[command unit]
P : Servo motor encoder resolution [pulse/rev]
t
ΔS: Travel distance per servo motor revolution [command unit/rev]
CMX: Electronic gear - Numerator
CDV: Electronic gear - Denominator
CMX/CDV = P /ΔS
t
The following setting example shows how to calculate the electronic gear.
To calculate the electronic gear, the following specification symbols are required.
Pb: Ball screw lead [mm]
1/n: Reduction ratio
P : Servo motor encoder resolution [pulse/rev]
t
ΔS: Travel distance per servo motor revolution [mm/rev]
3 BASIC FUNCTION
104
3.9 Electronic gear function [G] [WG]
or
+
CMX
Deviation counter
CDV -
Servo motor
M
Encoder