
B-63783EN-1/01 9.SPINDLE FUNCTION
- 823 -
- Control block diagram
The spindle positioning function is enabled only when the number of
pulses from the position coder is 4096, and the gear ratio between the
spindle side and position coder side
1:2
n
(n: Integer of 0 or greater)
(N:M) is as follows:
The least command increment (detection unit) for each gear ratio is set
as listed below.
Gear ratio between spindle and position coder Least command increment
(detection unit) deg
1:1 0.088 (1×360/4096)
1:2 0.176 (2×360/4096)
1:4 0.352 (4×360/4096)
1:8 0.703 (8×360/4096)
::
1:N (N×360/4096)
- Selecting a spindle positioning axis
An arbitrary axis address can be set for an axis on which the spindle is
positioned.
Spindle positioning axes are arranged from the end of controlled axes.
Parameter No. 1020.
Set the servo axis numbers of the spindle positioning axes to 0.
Parameter No. 1023.
Set the spindle motor numbers of the spindles for which spindle
positioning is performed in parameter No. 1027.
Spindle control
Spindle
amplifier
Spindle motor
Spindle
Gear ratio n:m
Error
counter
Gear ratio N:M
Position
coder