
PROGRAMMING18. SPECIFYING THE LASER FUNCTION
B–63664EN/02
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15091 Minimum pulse frequency
[Unit of data ] Hz
[Valid data range] 5 to 2000
This parameter specifies a minimum pulse frequency clamp value. If the
frequency calculated from the current feedrate becomes lower than the
value set in this parameter, the frequency is clamped to the value set in this
parameter.
15092 Minimum pulse duty cycle
[Unit of data ] %
[Valid data range] 0 to 100
This parameter specifies a minimum pulse duty cycle clamp value. If the
duty cycle calculated from the current feedrate becomes lower than the
value set in this parameter, the duty cycle is clamped to the value set in
this parameter.
15094 Power control filter time constant
[Unit of data ] ms
[Valid data range] 8 to 32767
This parameter specifies a time constant for the primary delay filter used
to delay the power command for synchronization with machine feed.
The primary delay filter is expressed as follows:
O
n
+ O
n–1
) (I
n
–O
n–1
)
Ts
Tc
Ts: 8 ms (sampling time)
Tc: To be set in this parameter (time constant)
15095 Allowable variation in power control speed
[Unit of data ] mm/min
[Valid data range] 0 to 255
The calculated feedrate slightly fluctuates also in a steady state, and the
data items (specified power, pulse frequency, and pulse duty) calculated
based on the feedrate also fluctuate. To prevent these unnecessary
fluctuations, specify the width of a dead zone for feedrate fluctuations.