Contour Handwheel/Path Input Using Handwheel (Option) - Siemens SINUMERIK 840D sl Function Manual

H1: Manual travel and handwheel travel

4.6 Contour handwheel/path input using handwheel (option)

Feedrate override
The feedrate override does not affect the velocity of the movements produced by the
handwheel (exception: 0%). It only affects the programmed feedrate.
With path default and fast handwheel movements, the axis may not be able to follow the
handwheel rotation synchronously (especially in the case of a large handwheel-pulse
weighting), causing the axis to overtravel.
4.6 Contour handwheel/path input using handwheel (option)
4.6
Function
When the function is activated, the feedrate of path and synchronized axes can be controlled
via a handwheel in AUTOMATIC and MDI modes.
Availability
For the SINUMERIK 840D sl and SINUMERIK 828D systems, the "contour handwheel"
function is available as an option that is under license.
Function response
MD11346 $MN_HANDWH_TRUE_DISTANCE
The following response can be set for the contour handwheel using the machine data above
(handwheel path or velocity definition):
● Path definition
● Velocity specification
Feedrate
The feedrate in mm/min is dependent on:
● The number of pulses supplied by the selected handwheel within one period
● The handwheel's pulse weighting set via machine data
● The activated increment (INC1, 10, 100, etc.)
● The path weighting of an increment
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Limiting the velocity to the maximum permissible value causes the axes to overtravel. The
path defined by the handwheel is traversed and no pulses are lost.
The handwheel only defines the traverse velocity. As soon as the handwheel stops, the
axes stop too. Motion is braked immediately if no pulses are supplied from the handwheel
in one IPO cycle. thus preventing overtravel by the axes. The handwheel pulses do not
supply a path default.
MD11322 $MN_CONTOURHANDWH_IMP_PER_LATCH
(contour-handwheel pulses per detent position)
MD31090 $MA_JOG_INCR_WEIGHT
of the first available geometry axis
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions