
11. OPTION RELATED TO SPINDLE
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(1) Ensure that the spindle orientation command (ORCMA) is set to 0
when the power is turned on.
(2) For safety, set the forward/reverse rotation command (SFRA/SRVA)
and speed command to 0 when performing spindle orientation.
(3) When an emergency stop is initiated during spindle orientation, reset
the spindle orientation command (ORCMA) to 0.
(4) The precision of the edge of the signal output from the external
one–rotation signal switch (proximity switch) affects the positional
accuracy. So, use an external one–rotation signal switch (proximity
switch) that has a stable edge.
(5) The position at which the signal is output from the external
one–rotation signal switch (proximity switch) depends on the
temperature. So, when selecting an external one–rotation signal
switch (proximity switch), consider the ambient temperature.
Unlike conventional mechanical spindle orientation using a stopper, etc.,
the spindle orientation stops the spindle at a fixed position by directly
feeding back position signals from the magnetic sensor directly connected
to the machine spindle.
NOTE
This function is not available for αC sereis.
This orientation is accomplished simply by connecting the magnetic
sensor to the spindle without any need of mechanical orientation
mechanism (stopper, pin, etc.) for spindle orientation.
Since the spindle motor connected to the spindle is utilized and the
orientation can be performed directly from high-speed rotation,
irrespective of gear shift, the orientation time is largely reduced.
This sequence consists of the spindle orientation command, its
completion signal, clutch/gear speed signal only without any need of
other signals. Neither orientation speed command sequence nor torque
limit command sequence is needed.
11.1.4.8
Notes
11.1.5
Magnetic Sensor
Method Spindle
Orientation
11.1.5.1
General
11.1.5.2
Features
Mechanical parts are not
required.
Reduction of orientation
time
Simplified power
magnetic sequence
control