Mitsubishi Electric MELSERVO-J5 Series User Manual page 112

Ac servo system
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• When setting "2" (degree) in [Pr. PT01.2 Unit for position data]
Set the number of gear teeth on machine side with [Pr. PA06 Electronic gear numerator] and the number of gear teeth on
servo motor side with [Pr. PA07 Electronic gear denominator]. [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
CMX: Number of gear teeth on machine side
CDV: Number of gear teeth on servo motor side
Ex.
If the number of gear teeth on machine side is 25 and the number of gear teeth on servo motor side is 11, set [Pr. PA06] to 25
and [Pr. PA07] to 11.
Z
Servo motor
2
Z
1
P
(servo motor resolution): 67108864 pulses/rev
t
Z
: Number of gear teeth on servo motor side
1
Z
: Number of gear teeth on machine side
2
Z
: Z
= 11: 25
1
2
3 BASIC FUNCTION
110
3.9 Electronic gear function [G] [WG]
or
+
CMX
Pt
CDV
360000
-
Machine
Servo motor
Deviation counter
M
Encoder
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