4. DESCRIPTION OF PARAMETERS
B–63610EN/01
200
4911
Rapid (q) of the fluction of spindle speed which is assumed to be the speci-
fied spindle speed
[Data type] Word
Unit of data 1% 0. 1%
Data range 1 to 100 1 to 1000
NOTE
Unit of data depends on parameter No.4900#0 FLR.
Set the ratio (q) of the spindle speed which is assumed to be the specified
spindle speed in the spindle speed fluctuation detection function.
Let the commanded speed be Sc. When the actual spindle speed reaches
between (Sc–Sq) and (Sc + Sq), it is assumed to be the commanded speed.
The spindle speed fluctuation detection starts.
where, Sq = Sc
100
q
4912
Spindle speed fluctuation ratio (r) for which no alarm is activated in the
spindle speed fluctuation detection function
[Data type] Word
Unit of data 1% 0. 1%
Data range 1 to 100 1 to 1000
NOTE
Unit of data depends on parameter No.4900#0 FLR.
Set the spindle speed fluctuation ratio (r) for which no alarm is activated in
the spindle speed fluctuation detection function (see Fig.4.22 (e)).
4913
Spindle speed fluctuation value (d) for which no alarm is activated in the
spindle speed fluctuation detection function
[Data type] Word
[Unit of data] min
–1
[Valid data range] 0 to 32767
Set the allowable fluctuation speed (Sd) for which no alarm is activated in
the spindle speed fluctuation detection function.
The function for detecting spindle speed fluctuation checks whether the
actual speed varies for the specified speed or not. Sd or Sr, whichever is
greater, is taken as the allowable fluctuation speed (Sm). An alarm is
activated when the actual spindle speed varies for the commanded speed
(Sc) under the condition that the variation width exceeds the allowable
variation width (Sm).
Sd: The allowable constant variation width which is independent of the
specified spindle speed (Sd is set with parameter 4913.)
[Unit of data]
[Valid data range]
[Unit of data]
[Valid data range]