
B–63503EN–1/01
9. SPINDLE SPEED FUNCTION
385
3772 Maximum spindle speed
[Data type] Word
[Unit of data] min
–1
[Valid data range] 0 to 32767
This parameter sets the maximum spindle speed.
When a command specifying a speed exceeding the maximum speed of
the spindle is specified , or the speed of the spindle exceeds the maximum
speed because of the spindle speed override function, the spindle speed is
clamped at the maximum speed set in the parameter.
NOTE
1 In the M series, this parameter is valid when the constant
surface speed control is selected.
2 When the constant surface speed control is selected, the
spindle speed is clamped at the maximum speed,
regardless of whether the G96 mode or G97 mode is
specified.
3 When 0 is set in this parameter, the speed of the spindle is
not clamped.
4 When spindle speed command control is applied using the
PMC, this parameter has no effect, and the spindle speed
is not clamped.
5 When the multi–spindle control option is selected, set the
maximum speed for each spindle in the following
parameters:
Parameter No. 3772: Sets the maximum speed for the first
spindle.
Parameter No. 3802: Sets the maximum speed for the
second spindle.
CAUTION
This section mentioned a spindle speed control that should
be prepared on the CNC side. But it is also necessary to
design the signals to the spindle control unit.
Consult the manual of the spindle control unit used and take
necessary actions on the spindle control unit.
Caution