
11. OPTION RELATED TO SPINDLE
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(b) Orientation command (ORCMA)
D This signal is used to stop the spindle at a specified position to
attach/detach a workpiece.
D When this signal is set to 1, the spindle, if rotating, is decelerated
immediately and stops at a specified position.
D If an orientation command is issued for safety, set the spindle forward
rotation/reverse rotation command (SFRA/SFRA) to 0. Then, the
spindle does not start rotating even if ORCMA is set to 0 during tool
replacement.
D Ensure that this signal is set to 0 by the workpiece attachment /
detachment completion signal.
D Ensure that the orientation command signal is set to 0 when the power
is turned on.
D Reset the orientation command signal to 0 when an emergency stop is
initiated during orientation.
(c) Clutch/gear signals (CTH1A, CTH2A)
D When there are two or more speed change gear stages between the
spindle and spindle motor, these signals are used to select a spindle
control parameter (position gain, gear ratio, velocity loop gain).
D Depending on the clutch or gear state, make settings according to the
table below. Names such as HIGH GEAR are given only for
convenience. Arbitrary names may be assigned to the actual gears.
CTH1A CTH2A
0 0 HIGH GEAR
0 1 MEDIUM HIGH GEAR
1 0 MEDIUM LOW GEAR
1 1 LOW GEAR
(d) Spindle orientation stop position change command (INDXA)
D In orientation of external stop position setting type, this signal is used
to orient the spindle to a different position immediately after spindle
orientation.
This signal is valid when the spindle orientation command (ORCMA)
is set to 1.
D When this signal makes a transition from 1 to 0, the spindle is oriented
within one rotation to the position specified by new stop position data
(SHA11 to SHA00) (arbitrary position within one rotation specified
by an absolute position command).
D The direction of orientation is specified by the shortcut rotation
command (NRROA) or rotation direction command (ROTAA).
D This function is enabled when the CNC parameter for an orientation
function of external stop position setting type is set.
(e) Shortcut rotation command for spindle orientation stop position modification (NRROA)
D This signal is used to specify a rotation direction when the spindle is
oriented to a different position immediately after spindle orientation.
This signal is used for shortcut rotation (within "180_) to the next
stop position.