
B-64663EN/01 LASER FUNCTION 6.TRACING CONTROL
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15510 Integral time constant : standard setting value=300
15511
Integral compensation zero width :
standard setting value=30000 (Not required)
15512 Integral clamp value : standard setting value=0 (Not required)
15520 Phase compensation time constant : standard setting value=0 (Not required)
15521 Phase compensation gain : standard setting value=0 (Not required)
6.1.3 Standard Shift
Standard Shift
A standard shift is used to change the gap between the nozzle and
workpiece. The following formula is used to calculate the feedrate
along a tracing axis.
Vz=K×(∆E-E0) (1)
where,
Vz: Feed rate of tracing axis (mm/sec)
K: Tracking speed voltage conversion coefficient
∆E: Amount of shift (mm)
E
0
: Standard shift (mm)
As is obvious from formula (1) above, the amount of shift (DE) that
produces Vz = 0 depends on the standard shift (E
0
). When the value of
E
0
is changed from 0 to 0.5 mm, for example, the positional
relationship between the nozzle and workpiece changes as shown
below.
Standard shift setting range
Controlled by the amount of shift, the standard shift setting range is
restricted to within the range of the sense signal. So, use a standard
shift to enable fine adjustment. The lower and upper limits imposed on
the standard shift values can be specified using parameter Nos. 15531
and 15532.