Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
41
Axis Monitoring (A3)
2
2.1 Overview of monitoring functions
Overview of monitoring functions
● Motion monitoring functions
– Contour monitoring
– Position monitoring
– Standstill monitoring
– Clamping monitoring
– Speed setpoint monitoring
– Actual velocity monitoring
– Encoder monitoring functions
● Monitoring of static limits
– Limit switch monitoring
– Working area limitation
2.2 Motion monitoring functions
2.2.1 Contour monitoring
Function
The principle on which the contour monitoring function works is the constant comparison of
the measured actual position value with that calculated from the NC position setpoint. For
the precalculation of the following error, a model is used that simulates the dynamics of the
position control including feedforward control.
So that the monitoring function does not respond incorrectly on slight speed fluctuations
(caused by changes of load) a tolerance band is allowed for the max. contour deviation.
If the permissible actual value deviation entered in MD36400 CONTOUR_TOL (tolerance
band contour monitoring) is exceeded, an alarm is signaled and the axes are stopped.
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