
PROGRAMMING18. SPECIFYING THE LASER FUNCTION
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15090 Minimum power specification value
[Data unit] W
[Data range] 0 to 7000
Minimum clamp value for the power specification value that corresponds
to Mmin. If the power specification value calculated from the current
feedrate is less than the value set for this parameter, clamping is performed
with this value.
15091 Minimum pulse frequency
[Data unit] Hz
[Data range] 5 to 2000
Minimum clamp value for the pulse frequency that corresponds to Mmin
in Fig.18.3. If the frequency calculated from the current feedrate is less
than the value set for this parameter, clamping is performed with this
value.
15092 Minimum pulse duty
[Data unit] %
[Data range] 0 to 100
Minimum clamp value for the pulse duty that corresponds to Mmin in
Fig.18.3. If the duty calculated from the current feedrate is less than the
value set for this parameter, clamping is performed with this value.
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.