HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 300)

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4.31 Load Monit
o
ri
ng
4.31 Load Monitoring
Fundamentals of load monitoring
The load monitoring function checks the performance and work values
of the drives and compares them to limit values which have been
determined during a reference machining cycle.
The CNC PILOT considers two limit values:
„ If the first limit value is exceeded, the tool is marked as worn out and
the tool life monitoring inserts the replacement tool (see “Tool
programming” on page 121).
„ Second limit value exceeded: The load monitor reports a broken tool
and stops the program run (cycle stop).
Example of load monitoring
. . .
N.. G996 Q1 H1 Torque monitoring, excluding rapid traverse paths
. . .
N.. G14 Q0
N.. G26 S4000
N.. T2
N.. G995 H1 Q9 Monitor the main spindle and X axis
N.. G96 S230 G95 F0.35 M4
N.. M108
N.. G0 X106 Z4
N.. G47 P3
N.. G820 NS.. Monitor the feed paths of the roughing cycle
N.. G0 Z4
N.. M109
N.. G995 End of monitoring zone
. . .