
8.LASER OUTPUT CONTROL B-63192EN/03
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8.4 START-UP FUNCTION
When a shift occurs from piercing to cutting, cutting may not be
stable if it is started with the cutting data. The start-up function
controls the feedrate and power at a shift from piercing to cutting in
the same manner as with the end of edge machining, thereby
achieving stable cutting.
8.4.1 Feedrate and Power Control
Cutting is started as shown below.
Feedrate/
power
Sb, Pb,
Fb
Time
Fr
Sb, Pr,
Lr
Lr : Return distance
Fr : Return speed
Pr : Return frequency
Qr : Return duty cycle
Fb : Programmed feedrate
Sb : Programmed output peak value
Pb : Programmed pulse frequency
Qb : Programmed pulse duty cycle
1 Stable cutting starts with the return frequency Pr, return duty
cycle Qr, and return speed Fr, instead of the programmed values.
2 After the return distance Lr is traveled, the programmed feedrate,
pulse frequency, and duty cycle become effective again,
resuming normal machining.