LS ELECTRIC L7NHF Series, User Manual

Page: 237 / 409

10. Object Dictionary
10-45
(1/10) * 20 mm = 2 mm. The number of external encoder pulses is calculated as
2 mm / 4 um = 500 pulses.
Gear ratio setting
Number of external encoder pulses x (numerator / denominator) = Number of
motor encoder pulses
•
500(Number of external encoder pulses) ×
524288
(
numerator
)
500
(
denominator
)
=
524288(
Number of motor encoder pulses
)
3. Belt-pulley
structure
- Motor-side pulley diameter: 30 mm
- Rotary-side pulley diameter: 20 mm
- External encoder resolution: 20000 pulse/rev
In the case of a gear and belt-pulley system, the final gear ratio is calculated and
the gear ratio is multiplied by the number of external encoder pulses to produce
the scale.
Motor encoder
specifications
524288[pulse/rev]
Load movement
amount/revolution
The external encoder rotates at a ratio of 30 / 20 per servo motor rotation. The
number of pulses for the external encoder is calculated as 20000 x (3/2) = 30000
pulses.
Gear ratio setting
Number of external encoder pulses x (numerator / denominator) = Number of
motor encoder pulses
•
30000(Number of external encoder pulses) ×
524288 ( numerator )
30000 ( denominator )
=
524288(
Number of motor encoder pulses
)
0x2027 Load Encoder Following Error Window ALL
Variable
Type
Setting Range Initial Value Unit
Accessi
bility
PDO
Assignm
Variable
Attribute
Savin
g