5.4 Position Control
5-37
5
Op
er
at
io
n
(1) Electronic Gear Ratio
Set the electronic gear ratio using Pn20E and Pn210.
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.
Pn20E
Electronic Gear Ratio (Numerator)
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
1 to 1073741824
1
4
After restart
Setup
Pn210
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
Pn210
Pn20E
=
n
m
Encoder resolution
Travel distance per load
shaft revolution (reference units)
×
Rotation
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.
SGMVV
Symbol
Specification
Encoder Resolutions
3
20-bit absolute
1048576
D
20-bit incremental
1048576
