
B-65280EN/05 FANUC AC SPINDLE MOTOR αCi series 2.EXPLANATION OF OPERATION MODES
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(2) Position gain
In rigid tapping, the tapping axis and spindle are controlled to be
synchronized. So, the position gains of the tapping axis and spindle
must be set to the same value.
[Series 16i]
The position gain parameter of the tapping axis in the rigid tapping is
selected as follows according to the gear selection signal.
Standard machining [M series]: GR3O, GR2O, GR1O
Turning [T series] and machining [M series] with surface speed
constant option: GR2, GR1
Second spindle of turning [T series]: GR21(Multi-spindle control
option is needed)
Standard machining [M series]
Turning [T series] and machining [M series] with
surface speed constant
Gear signal Gear signal
GR1O GR2O GR3O
Parameter No.
1st. sp 2nd. sp
Parameter No.
5280
(*1)
GR1 GR2 GR21 T M
1 0 0 5281 5280
(*1)
0 1 0 5282 0 0 0 5281
0 0 1 5283 1 0 1 5282
0 1 5283
1 1 5284 5283
NOTE
*1 When this parameter is "0", each gear parameter
becomes valid.
When this parameter is not "0", each gear parameter
becomes invalid, and this parameter is always used.
The position gain parameter of the spindle in the rigid tapping is
selected as follows according to the gear selection signal (CTH1A/B,
CTH2A/B). (This is common T series and M series)
[1st. sp] [2nd. sp]
Gear signal Gear signal
CTH1A CTH2A
Parameter No.
CTH1B CTH2B
Parameter No.
0 0 4065 (S1) 0 0 4065 (S2)
0 1 4066 (S1) 0 1 4066 (S2)
1 0 4067 (S1) 1 0 4067 (S2)
1 1 4068 (S1) 1 1 4068 (S2)
CAUTION
Take care to input the gear selection signal GR1,
GR2, GR21, GR1O, GR2O, GR3O and CTH1A/B,
CTH2A/B according to the real gear state in order to
get the same position gain of the tapping axis and
that of the spindle, because GR1, GR2, GR21,
GR1O, GR2O, GR3O and CTH1A/B, CTH2A/B are
inputted independently.