HEIDENHAIN CNC Pilot 4290 - Manual (Page 70)

3 Manual Control and Automatic mode 58
3.7 Load Monit
or
ing
3.7.6 Load Monitoring Parameters
Machine parameters for load monitoring (spindle: 809, 859, ...; C-
axis: 1010, 1060; linear axes: 1110, 1160, ...)
■ Start time for monitoring [0 to 1000 ms] is calculated when rapid
traverse movements have been skipped:
■ Spindles: A limit value is calculated from the acceleration and
brake ramps. As long as nominal acceleration exceeds the limit
value, the monitoring function is deactivated. If nominal acceleration
drops below the limit value, the monitoring function is delayed by
the ”start time for monitoring.”
■ Linear axes and C-axis: After rapid traverse has changed to feed
rate, the monitoring function is delayed by the ”start time for
monitoring.”
■ Number of measured values to be averaged [1..50]
The mean value reduces the sensitivity to short peaks.
■ Maximum torque of the drive [Nmm]
■ Delay in reaction P1, P2 [0 to 1000 ms]: The CNC PILOT indicates
that torque limit 1/2 has been exceeded after the time ”P1/P2” has
passed.
Control parameter 8 ”Load monitoring settings”
■ Factor for torque limit value 1, 2
■ Factor for work limit value
Limit value = reference value * factor for limit value
■ Minimum torque [% of rated torque]: Reference values below
this value are raised to this minimum torque value. This prevents
that limit values are exceeded as a result of minor differences in
torque.
■ maximum file size [KB]: If the data exceed the ”maximum file
size,” the ”oldest measured values” are overwritten. Approximate
value: For one component per minute of program run time
approximately 12 KB.
Control parameter 15 ”bit codes for load monitoring”:
Assigns the bits number used in G995 to the drives (logical axes).