Fronius TransTig 1750 Puls Operating Instructions Manual page 72

The special HF ignition indicator remains lit as long as a value has been specified for the
HFt parameter.
If the HFt setup parameter is set to "OFF", no high-frequency ignition takes place at the
start of welding. In this case, the start of welding commences with touchdown ignition.
Ito
Ignition time-out - time until the safety cut-out is triggered following an abortive ignition
attempt
Unit
Setting range
Factory settings
IMPORTANT! Ignition time-out is a safety function and cannot be deactivated.
The description of the ignition time-out function can be found in "TIG welding".
Arc
Arc - arc break watchdog: time until the safety cut-out is triggered following an arc break
Unit
Setting range
Factory settings
IMPORTANT! The arc break watchdog is a safety function and cannot be deactivated.
The description of the arc break watchdog function can be found in "TIG welding".
ACS
Automatic current switch - automatic switchover to main current
Unit
Setting range
Factory settings
ON
OFF
70
NOTE! If there are problems with sensitive equipment in the immediate vicinity,
increase the HFt parameter to a maximum of 0.4 s.
s
0.1 - 9.9
5
s
0.1 - 9.9
2
-
ON / OFF
ON
The parameter I1 (main current) will automatically be selected
after welding has started.
The main current I1 can be set immediately.
The last selected parameter remains set during welding.
The last selected parameter can be set immediately.
Parameter I1 is not selected automatically.