
B–63610EN/01
4. DESCRIPTION OF PARAMETERS
201
Sr: The allowable variation width which is obtained by multiplying Sc
(commanded spindle speed) by r (constant ratio). (r is set with
parameter 4912.)
Sm: Sd or Sr, whichever is greater
No
check
Spindle speed
Specified
speed
Actual speed
Alarm
Time
Check
start
Command
another
speed
Check
Check
Sm
Sm
Sd
Sd
Fig.4.22 (e) Sd and Sm
4914
Time (p) elapsed from when the commanded spindle speed is changed to the
start of spindle speed fluctuation detection
[Data type] 2–word
[Unit of data] ms
[Valid data range] 0 to 999999
Set the time elapsed from when the specified spindle speed is changed to
the start of spindle speed fluctuation detection in the spindle speed
fluctuation detection function. That is, the fluctuation in the spindle speed
is not detected until the specified time elapses from when the specified
spindle speed is changed.
Sd
Sd
No
check
Spindle
speed
Specified
speed
Actual speed
Alarm
Time
Check
start
Command
another
speed
Check
Sm
Sm
P
Fig.4.22 (f) Sd and Sm