
B-63783EN-1/01 9.SPINDLE FUNCTION
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5875 Effective area in the servo mode using a position coder
[Input type] Parameter input
[Data type] Integerspindle
[Unit of data] detection unit
[Valid data range] 0 - 99999999
Set an effective area in the servo mode (rigid tapping, spindle positioning,
and so forth) using a position coder.
5876 Positional deviation limit during movement in the servo mode using a
position coder
[Input type] Parameter input
[Data type] Integerspindle
[Unit of data] detection unit
[Valid data range] 0 - 99999999
Set a positional deviation limit during movement in the servo mode
(rigid tapping, spindle positioning, and so forth) using a position coder.
Set a positional deviation limit as shown in the following figure:
α
××
×××
=
G
Equation
60
5.1100360S
S : Maximum spindle speed for rigid tapping
G : Position gain for the rigid tapping axis
α : Detection unit
(Calculation example)
1 : 1 : 2
In the configuration shown on the left, the positional deviation limit is
obtained as follows:
S= 3600
G= 3000
L= 360°(The spindle rotates through one for each rotation
of the spindle motor.)
α
= La / 4096
= 720°/4096
= 0.17578°
La= 720°
(The spindle must rotate through two turns to rotate the position
coder one turn = 360°×2)
60×3000×0.17578
3600×360×100×1.5
Setting =
=6144
SPINDLE
MOTOR
Spindle
Position
coder