YASKAWA E-V-MD Series - Page 123

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