5.4
Parameter related to orientation control
5.4.1
Encoder orientation gear ratio setting
Set the encoder orientation gear ratio for machine end orientation control.
To perform machine end orientation control, the FR-A8TP and the plug-in option FR-A8AP must be installed.
Set "1" in Pr.862 Encoder option selection. Connect the motor-end encoder to the FR-A8TP, and connect the machine-end
encoder to the FR-A8AP.
Pr.
Pr.
group
Number of machine side
394
A540
gear teeth
Number of motor side
395
A541
gear teeth
Set the encoder orientation gear ratio.
• An accurate gear ratio (or pulley ratio) from the motor shaft to the spindle is necessary.
Set correct numbers of gear teeth in Pr.394 and Pr.395.
Pr.394 = A C E
Pr.395 = B D F
Exercise care so that the A C E and B D F settings do not exceed 32767.
If either or both of them exceed that value, make approximations.
Spindle
A
B
C
D
E
(A to F indicate the
F
numbers of gear teeth.)
54
ORIENTATION CONTROL
Initial
Name
value
1
Motor
Setting
range
0 to 32767
Set the encoder orientation gear ratio.
Description