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Edge detection:
-
If a value of 0.5 - 20 mm (0.019 - 0.787 inches) is specified with the WireSense edge
detection signal, the WireSense start signal is used to detect and measure a single
edge
-
The specified value (threshold value) defines the minimum edge height that can be
detected by the power source
•
For example, if you use a 2 mm thick sheet that is welded with an overlap joint,
it is recommended to use this signal to specify 1.5 mm (0.059 inch) (it is not
recommended to always set the minimum value of 0.5 mm (0.019 inches), as
this setting may cause false detection. For example, this may be caused by
welding spatter, inaccurate robot movements, etc.)
•
The Touch signal is output when an edge is detected
Digital Interface:
The threshold value for edge detection is specified by entering a value between 0 and
200 (UINT 16).
Value range
Designation
Min./max. possible value
0
Threshold
0 mm (0 inches)
200
Threshold
20 mm (0.787 inches)
For more information on WireSense, see section
page
Wire forward /
backward length
(length specifica-
tion wire thread-
ing / wire retrac-
tion) - Group
Input / Analog
Input
Signal behavior:
-
The signal is active as soon as a value greater than or equal to 1 mm (0.039 inches)
is entered (0 = signal inactive).
-
If a value greater than or equal to 1 mm (0.039 inches) is specified, the wire elec-
trode is only fed by the specified value when the signal Wire forward is set. After
reaching the preset value, the end of wirefeeding takes place automatically.
-
As soon as the preset value is reached, the signal Touch signal (WORD 0 / Byte 0 /
Bit 7) is set and the signal Wire forward can be deactivated again. At the same time,
the signal Wire position indicates how far the wire electrode has been conveyed
-
The value remains set for 1 second
-
Tolerance = +/- 1 mm (0.039 inches)
-
If the wire electrode touches the workpiece before the preset value has been
reached, the Touch signal (WORD 0 / Byte 0 / Bit 7) and additionally the signal Arc
stable / Touch signal (WORD 0 / Byte 0 / Bit 5) are set. The end of wirefeeding takes
place automatically.
-
The wire electrode can be conveyed a maximum of 50 m (164 feet 0.5 inches)
(=safety stop)
If not all wire feeds of the welding system are synchronized (e.g. due to the combination
of a Robacta Drive drive unit and a Stand Alone unwind wirefeeder), inaccuracies of +/- 5
mm (0.196 inches) may occur in the specification of the wire electrode fed due to the
system.
As described below, the set value can be specified on a Digital Interface or an Analog
Interface.
The following set value specifications apply to the MIG/MAG standard synergic,
MIG/MAG pulse synergic, MIG/MAG PMC, and MIG/MAG LSC welding processes.
Digital Interface:
The set value for the length of wire to be fed is specified by entering a value between
-32,768 and +32,767 (UINT 16).
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EN-US
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