
2.EXPLANATION OF OPERATION MODES FANUC AC SPINDLE MOTOR αi series B-65280EN/05
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(3) When the velocity integral control signal is used
Speed
Synchronous
speed
Spindle 1
Phase matching
Spindle synchronous
control signal
SPSYC
Spindle synchronous
speed command signal
R12I-R01I
Spindle phase
synchronous control signal
SPPHS
Spindle synchronous speed
control completion signal
FSPSY
Spindle synchronous speed
control completion signal
FSPPH
(Note)
Chuck close command signal
Chuck close completion signal
Velocity integral control signal
INTGA
(Note)
Spindle 2
NOTE
Turn on (set to 1) the velocity integral control signal
INTGA only when the two spindles are seizing the
same workpiece. If the signal is turned on (set to 1)
in other cases, the velocity loop integral function is
disabled. So, an increased synchronous error can
result.