
B-65280EN/05 FANUC AC SPINDLE MOTOR αi series 5.FUNCTION DESCRIPTIONS
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(2) Starting spindle orientation when the spindle is rotating at a speed
between the orientation speed lower limit and the orientation speed upper
limit
<1> If the spindle orientation command (ORCMA) is input when the
spindle is rotating at a speed between the orientation speed upper
limit specified in parameter No. 4038 and the orientation speed
lower limit (calculated within the software), a one-rotation signal
is detected (only at the first-time spindle orientation after the
power is switched on).
<2> The spindle decelerates at the acceleration specified as an
acceleration during motor deceleration in parameter Nos. 4320 to
4323.
<3> When the spindle speed becomes lower than or equal to the value
calculated within the software, the position loop is controlled at
the position gain specified as a spindle orientation position gain
in parameter Nos. 4060 to 4063.
<4> When the position error becomes lower than or equal to the
number of pulses specified as a spindle orientation completion
signal level in parameter No. 4075, the spindle orientation
completion signal (ORARA) is output.
ORARA
(spindle orientation completion signal)
ORCMA
s
indle orientation command
Motor speed
<1>
<2>
<3>
<4>