9.LASER SOFTWARE FUNCTION B-70315EN/02
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9.4.3 Compensation for Power Sensor Response Speed
To improve the response delay of the power sensor, the monitored
value of the power sensor to be returned in response to an output
command value is estimated, and feedback control is exercised
according to the deviation between the estimated value and the
monitored value of the power sensor. Estimation processing is based
on the primary delay filter to which an output command value is input.
So, a time constant needs to be set beforehand.
9.4.3.1 Time constant measurement method
(1) Set bit 2 (PTC) of PRM No. 29000 to 1 to enable display of the
data table screen for actual output estimation. The rated output
depends on the oscillator model. So, set a measured peak power
in PRM No. 29003 actually. In addition, set a beam output time
in PRM No. 29004.
#7 #6 #5 #4 #3 #2 #1 #0
29000 PTC
PTC On the time constant measurement screen, time constant measurement
is:
0: Disabled.
1: Enabled.
When this parameter is set to 0, the screen is not displayed, and time
constant measurement is disabled.
However, a time constant measurement can be made using an external
signal.
Usually, set this parameter to 0 to prevent the time constant
measurement function from being started inadvertently.
29003 Peak power in power sensor time constant measurement
[Data type] Word
[Unit of data] W
[Valid data range] 0 to 32767
Set a peak power in measurement of the time constant of the power
sensor.
Usually, set the rated output of the oscillator.
29004 Beam output time in power sensor time constant measurement
[Data type] Word
[Unit of data] msec
[Valid data range] 0 to 32767
Set a period of time for which a beam is output to measure the time
constant of the power sensor.