APPLICATIONS
2.2.5 Electronic Gear cont.
— 2-26 —
6) Set the electronic gear ratio in the parameters below.
Reduce the electronic gear ratio
B
A
to their lowest terms so that both A and B are an
integer smaller than 65535, then set A and B in the following parameters.
B
A
Cn-24
RATB Electronic gear ratio (numerator)
Cn-25
RATA Electronic gear ratio (denominator)
Cn-24
RATB
Electronic Gear Ratio
Numerator
Unit:
None
Setting
Range: 1
to 65535
Factory
Setting: 4
For Position Control
Cn-25
RATA
Electronic Gear Ratio
Denominator
Unit:
None
Setting
Range: 1
to 65535
Factory
Setting: 1
For Position Control
These parameters are for position control only.
Set the electronic gear ratio according to machine
specifications.
Electronic gear ratio
B
A
=
Cn-24
Cn-25
B =
[(Number of encoder pulses) x 4] x [Motor shaft rotating speed]
A =
[Reference unit (load travel distance per revolution of load shaft)] x [Load shaft ro-
tating speed]
The parameter settings must meet the following condition:
0.01
≦
B
A
≦
100
The electronic gear settings are now complete.
2
Input
reference
pulse
Servopack
Servomotor
Electronic
gear
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