
B–63173EN–1/01
9. SPINDLE SPEED FUNCTION
354
3772
Maximum spindle speed
[Data type] Word
[Unit of data] rpm
[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 This parameter is valid when the constant surface speed
control option is selected.
2 When the constant surface speed control option is selected,
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 In the constant surface speed control,
the axis specification is wrong. (See pa-
rameter 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 (G92S_) 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 specified speed.
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