
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 2.EXPLANATION OF OPERATION MODES
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NOTE
If the mode is switched to the spindle synchronous
control mode when a one-rotation signal is undetected,
a one-rotation signal detection operation is
automatically performed. So, the spindle automatically
makes 2 to 3 turns even if such turns are not attempted.
If both spindles are mechanically connected with each
other and one-rotation signal detection operation is
disabled, or spindle phase synchronous control is not
exercised, automatic detection can be disabled by
setting bit 3 of parameter No. 4006.