HEIDENHAIN TNC 620 User Manual page 179

Setup | Moving the machine axes
Moving the axes
To activate the handwheel, press the handwheel
button on the HR 5xx:
Now you can operate the control only via the
HR 5xx. The control displays a pop-up window
with this information on the screen.
Select the desired operating mode with the OPM
soft key if necessary
If required, press and hold the permissive button
Use the handwheel to select the axis to be moved.
Select the additional axes with the soft keys as
required
Move the active axis in the positive direction with
the + key, or
Move the active axis in the negative direction with
the - key
To deactivate the handwheel, press the
handwheel key on the HR 5xx
Now you can operate the control via the operating
panel again.
Potentiometer settings
0.00005 in/revolution
Caution: Possible damage to the workpiece!
When toggling between the machine operating panel and the
handwheel, the feed rate may be reduced. This can cause visible
marks on the workpiece.
Make sure to retract the tool before toggling between the
handwheel and the machine operating panel.
The settings of the feed-rate potentiometer on the handwheel
may differ from those on the machine operating panel. When you
activate the handwheel, the control will automatically activate the
feed-rate potentiometer of the handwheel. When you deactivate
the handwheel, the control will automatically activate the feed-rate
potentiometer of the machine operating panel.
In order to make sure that the feed rate does not increase while
you switch over between the potentiometers, the feed rate is either
frozen or reduced.
If the feed rate before switching over is higher than the feed rate
after switching over, the control automatically reduces the feed rate
to the smaller value.
If the feed rate before switching over is less than the feed rate after
switching over, the control automatically freezes the feed rate. In this
case, you must turn the feed-rate potentiometer back to the previous
value because the activated feed-rate potentiometer will only then be
effective.
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
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