
B–65160E/02
2. FUNCTION EXPLANATION
FANUC AC SPINDLE MOTOR a series
89
Gear selection signal
Fst. sp Snd. sp
Parameter NO
GR1 GR2 GR21 T/TT M
(*1) 406 615
0 0 0 407 669
1 0 1 408 670
0 1 409 671
1 1 410
(*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 of T series and M series)
[Fst. sp]
Gear signal
CTH1A CTH2A
Parameter NO
0 0 6565
0 1 6566
1 0 6567
1 1 6568
[Snd. sp]
Gear signal
CTH1B CTH2B
Parameter NO
0 0 6705
0 1 6706
1 0 6707
1 1 6708
Take care to input the gear selection signals GR1, GR2, GR21,
GR1O, GR2O, GR3O, and CTH1A, CTH2A 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, CTH2A are inputted independently.
Set to 0 for parameter which is not used.