
B-64120EN/01 4.DESCRIPTION OF PARAMETERS
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Calculation example
Spindle
Motor
Spindle
Position
coder
1 : 1 : 2
P.C
S = 3600
G = 3000
L = 360 degrees (One spindle rotation per spindle motor rotation)
a = La/4096
= 720 degrees/4096
= 0.17578 degrees
La = 720 degrees
(One position coder rotation requires two spindle rotations (= 360
degrees
×
2)).
4096 = Detection pulse per position coder rotation
Setting value =
= 6144
3600
×
360
×
100
×
1.5
60
×
3000
×
0.17578
Fig.4.23 (c) Connection Among Spindle Motor, Spindle and Position Coder
NOTE
1 The detection unit is a = La/2048 when the position
coder built-in spindle motor uses a position coder
of 512 pulses per revolution.
2 When rigid tapping is performed using the second
spindle
• When the SPR parameter (bit 1 of parameter
No.5204) is set to 0, the setting of parameter
No.5311 is applied to the second spindle, as
well as to the first spindle.
• When the SPR parameter (bit 1 of parameter
No.5204) is set to 1, the setting of parameter
No.5351 is applied to the second spindle,
respectively.
5312
Positional deviation limit imposed while the tapping axis is stopped in rigid
tapping
[Data type] Word
[Unit of data] Detection unit
[Valid data range] 1 to 32767
This parameter is used to set a positional deviation limit imposed
while the tapping axis is stopped in rigid tapping.