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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Retraction after a power interruption
Refer to your machine manual.
Your machine tool builder configures and enables the
Retract operating mode.
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
Traverse 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 coordi-
nate 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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