Electronic Gear Function [B]; Setting Method - Mitsubishi Electric MELSERVO-J5 User Manual

3.11

Electronic gear function [B]

Electronic gear function is a function that multiplies the electronic gear ratio to the position command, and sets the ratio of the
rotation amount/travel distance of the servo motor to the rotation amount/travel distance of the command unit as desired. For
the position feedback, the inverse number of the electronic gear ratio is multiplied.
Position command
Electronic gear
[Command unit]
Position feedback
Electronic gear
[Command unit] reverse conversion
• Set the electronic gear within the range of conditions. If a value out of the range is set, [AL. 037 Parameter
error] occurs.
Precautions
• To prevent unexpected operation, set the electronic gear correctly.
• If an excessive command pulse frequency is input from the controller in the position mode, [AL. 031 Overspeed] or [AL. 035
Command frequency error] may occur, depending on the value of the electronic gear ratio.

Setting method

Adjust [Pr. PA06 Electronic gear numerator] and [Pr. PA07 Electronic gear denominator] so that the travel distance set in the
controller matches the travel distance on the machine. For details, refer to each controller manual.
Setting with servo parameters
Servo Symbol
parameter
PA06 CMX
PA07 CDV
+
Deviation counter
conversion
-
Name
Electronic gear numerator
Electronic gear denominator
Servo motor
M
Encoder
Outline
Set the electronic gear numerator.
Initial value: 1
Set the electronic gear denominator.
Initial value: 1
3.11 Electronic gear function [B]
3 BASIC FUNCTION
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