A3: Axis Monitoring, Protection Zones; Brief Description; Axis Monitoring Functions; Protection Zones - Siemens SINUMERIK 840D sl Function Manual

A3: Axis Monitoring, Protection Zones

3.1

Brief description

3.1.1

Axis monitoring functions

Comprehensive monitoring functions are present in the controller for protection of people and
machines:
● Contour monitoring
● Positioning monitoring
● Zero-speed monitoring
● Clamping monitoring
● Speed-setpoint monitoring
● Actual-velocity monitoring
● Measuring system monitoring
● Limit-switch monitoring
● Monitoring of the working area limitation
3.1.2

Protection zones

With the help of protection zones, elements of the machine (e.g. spindle chuck, tool changer,
toolholder, tailstock, movable probe, etc.) and the workpiece can be protected against
collisions.
During automatic execution of part programs in the AUTOMATIC or MDA mode, the NC checks
at the start of every part program block whether a collision between protection zones can occur
upon moving along the programmed path.
After manual deactivation of an active protection zone, traversing can be performed in this
zone. After leaving the protection zone, the protection zone automatically becomes active
again.
The definition, activation and deactivation of protection zones takes place via part program
instructions.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
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