
B–63523EN–1/03
9. SPINDLE SPEED FUNCTION
1057
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 spindle
speed is specified, or the spindle speed 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 option is present.
2 When the constant surface speed control option is present,
the spindle speed is clamped at the maximum speed,
regardless of whether the G96 mode or G97 mode is
specified.
Number Message Description
190 ILLEGAL AXIS SELECT The axis specification is wrong in
constant surface speed control. (See
parameter No. 3770.) The specified
axis command (P) contains an illegal
value.
Correct the program.
CAUTION
1 If the spindle speed corresponding to the calculated surface
speed exceeds the speed specified in the spindle speed
clamp command (G50S_ for T series and G92S_ for M
series) during the G96 mode, the actual spindle speed is
clamped at the value specified in the spindle speed clamp
command.
If the specified spindle speed is lower than the value
specified in parameter No. 3771, the actual spindle speed
is clamped at the speed specified by No. 3771.
2 If the constant surface speed control function is provided for
a machining center system, it affects gear change under
normal spindle control. (See Section 9.3.)
Alarm and message
Caution