Fanuc Series 15i/150i-MA (Programming) Operators Manual

9.SPINDLE SPEED FUNCTION (S FUNCTION) PROGRAMMING B-63324EN/03
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- Examples of alarms issued for spindle speed fluctuation detection
1) Example where an alarm is issued after the specified spindle speed
is reached
2) Example in which an alarm is issued before the specified spindle
speed is attained
i: Fluctuation range not triggering an alarm (parameter No. 5721)
q: (Permission ratio at which the attainment of the specified spindle speed is
assumed (parameter No. 5701)) x (specified spindle speed)
r: Fluctuation ratio not triggering an alarm
(parameter No. 5702)) x (specified spindle speed)
Actual spindle speed
Specified spindle speed
The specified spindle speed
is changed.
Spindle speed fluctuation
detection alarm
A check begins.
Time
r
q
i
A check
is made.
No check is
made.
A check is made.
Actual spindle speed
Specified spindle speed
i
q
r
Time
Time p
A check
is made.
No check is
made.
A check is made.
The specified spindle
speed is changed.
Spindle speed fluctuation
detection alarm
A check begins.
i: Fluctuation range not triggering an alarm (parameter No. 5721)
q: (Permission ratio at which the attainment of the specified spindle speed is
assumed (parameter No. 5701)) x (specified spindle speed)
r: Fluctuation ratio not triggering an alarm
(parameter No. 5702)) x (specified spindle speed)
p: Time from when the specified spindle speed is changed until a check begins
(parameter No. 5722)

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