YASKAWA E-V-MD Series User Manual page 123

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