
11.SPINDLE SPEED FUNCTION B-63943EN-1/02
- 1536 -
NOTE
14 For a serial spindle, carefully check the gear count selection statuses of clutch/gear
signals (CTH1, CTH2) and gear selection signals (GR30, GR20, GR10 (type
M)/GR1, GR2(type T). The spindle speed fluctuation detection function does not
normally work if the gear count statuses of the two types of signals are different.
CNC system
Lathe system、
Machinin
center s
stem
Machining center system
Serial spindle
side
GR2 GR1 Selected
gear
GR30 GR20 GR10 Selected
gear
CTH1 CTH2
0 0 1st stage 0 0 1 1st stage 0 0
0 1 2nd stage 0 1 0 2nd stage 0 1
1 0 3rd stage 1 0 0 3rd stage 1 0
1 1 4th stage 4th stage 1 1
Reference item
Manual name Item name
Path spindle control
Spindle speed control
Spindle output control by the PMC
CONNECTION MANUAL
(FUNCTION)
(B-63943EN-1)
Multi-spindle
FANUC SERVO MOTOR αi series MAINTENANCE MANUAL
(B-65285EN)
FANUC SERVO AMPLIFIER αi series DESCRIPTIONS
(B-65282EN)
FANUC AC SPINDLE MOTOR αi series PARAMETER MANUAL
(B-65280EN)