HEIDENHAIN TNC 620, User Manual

Page: 280 / 521

Testing and running | Program run
6
Retraction after a power interruption
Refer to your machine manual.
Your machine tool builder configures and enables the
Retraction
mode of operation.
With the
Retraction
mode of operation you can disengage the tool
from the workpiece after an interruption in power.
If you activated a feed-rate limit before a power failure, this
is still active. You can deactivate the feed-rate limit using the
CANCEL THE FEED RATE LIMITATION
soft key.
The
Retraction
mode of operation is selectable in the following
conditions:
Power interrupted
No control voltage for the relay
Traversing the reference points
The
Retraction
operating mode offers the following modes of
traverse:
Mode Function
Machine axes Movement of all axes in the machine coordi-
nate system
Tilted system Movement of all axes in the active coordinate
system
Effective parameters: Position of the tilting
axes
Tool axis Movements of the tool axis in the active
coordinate system
Thread Movements of the tool axis in the active
coordinate system with compensating
movement of the spindle
Effective parameters: Thread pitch and direc-
tion of rotation
If the
Tilt the working plane
function (option 8) is
enabled on your control, then the
Tilted system
traverse
mode is also available.
The control selects the mode of traverse and the associated
parameters automatically. If the traverse mode or the parameters
have not been correctly preselected, you are unable to reset them
manually.
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HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022