7 Operation
7.4.3 Electronic Gear
7-20
(1) Electronic Gear Ratio
Set the electronic gear ratio using PnA42 and PnA44.
If the gear ratio of the servomotor and the load shaft is given as n/m where m is the rotation of the servomotor
and n is the rotation of the load shaft,
Encoder Resolution
Encoder resolution can be checked with servomotor model designation.
PnA42
Electronic Gear Ratio (Numerator)
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
1 to 1073741824
1
1
After restart
Setup
PnA44
Electronic Gear Ratio (Denominator)
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
1 to 1073741824
1
1
After restart
Setup
Position
Position
Electronic gear ratio:
=
A
B
A44
A42
=
n
m
Encoder resolution
Travel distance per load
shaft revolution (reference units)
×
Electronic gear ratio setting range: 0.001
≤
Electronic gear ratio (B/A)
≤
4000
If the electronic gear ratio is outside this range, a parameter setting error 1 (A.040) will
be output.
Symbol
Specification
Encoder Resolutions
SGMMV
-
2 17-bit
absolute
131072