H1: Manual and handwheel travel
3.6 Contour handwheel/path input using handwheel (option)
Extended Functions
178 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
3.6 Contour handwheel/path input using handwheel (option)
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.
Input mode (path or velocity input)
Either the distance or the velocity can be entered via the handwheel:
● Path definition
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.
● Velocity specification
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.
The input mode is set with machine data:
MD11346 $MN_HANDWH_TRUE_DISTANCE (handwheel distance or velocity input)
Feedrate
The feedrate in mm/min is dependent on:
● The number of pulses supplied by the selected handwheel within one period
● Pulse evaluation of the handwheel via the machine data:
MD11322 $MN_CONTOURHANDWH_IMP_PER_LATCH (contour handwheel pulses per
detent position)
● The activated increment (INC1, 10, 100, etc.)
● The distance weighting of an increment of the first available geometry axis:
MD31090 $MA_JOG_INCR_WEIGHT (evaluation of an increment for INC/handwheel)
The feedrate is not dependent on:
● The programmed feedrate mode (mm/min, mm/rev.)
● The programmed feedrate (resultant velocity can be higher)
● The rapid traverse velocity for G0 blocks
● The override (position 0% is effective, i.e. zero speed)
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