Fronius TPS/i, User Information

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Arc stable/Touch
signal (Arc
stable/touch sig-
nal) - Single Bit - This signal is set as soon as the wire electrode touches the workpiece and current
flows, thus reporting to the robot controller that the arc is burning.
- If the Arc stable / Touch signal is active, the arc monitoring is also active. This is not
the case for the Current flow signal.
- If an arc monitoring time has been set, the Arc stable / Touch signal is only reset if
the Current flow signal is inactive for longer than the set arc monitoring time.
- The Arc stable / Touch signal is active as long as the arc is burning.
- The Arc stable / Touch signal is also set as soon as the wire electrode or the gas
nozzle comes into contact with the workpiece in Touch- mode (Touch sensing signal
is active).
- For more information about the Touch sensing signal, see Touch sensing (Touch-
Sensing) - Single Bit on page 11 .
- When using WireSense, the Arc stable / Touch signal is set as soon as the wire
electrode comes into contact with the workpiece for the first time and the WireSense
process runs stable (For example, when the WireSense - Slaghammer function is
automatically triggered, the Arc stable / Touch signal is only set after the WireSense
- Slaghammer function has been successfully executed)
•
For more information on WireSense, see section WireSense start - Single Bit
on page 18 .
I-S I-E
I
GPr GPo SL1 Main current SL2 t t-S t-E
High Low
(1)
Welding start
(1) Arc stable / Touch signal (arc stable/touch signal)
The signal functions differently depending on the welding process. See below for an
overview of the function of the signal in conjunction with the different welding processes.
MIG/MAG pulse synergic, MIG/MAG PMC, mixed processes:
Example of correct ignition at the start of welding
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