Fronius MagicWave 1700, Operating Instructions Manual, Page: 147 / 287

39
Ignition time-out
function For details of how to adjust the set-up parameter Ignition Time-Out (Ito), please refer to
the section headed “The set-up menu: Level 2” - sub-section “TIG set-up parameters”.
If no arc ignites before the end of the period specified in the set-up menu, the power
source cuts out automatically and the error message “no|IGn” appears on the control
panel.
“E55” is displayed on the TIG JobMaster torch.
To make another attempt to achieve ignition, press the torch trigger again.
To dismiss the “no|IGn” message:
-
Press the Store button (13)
Arc-break
watchdog
function For details of how to adjust the “Arc-break watchdog function” set-up parameter (Arc),
please refer to the section headed “The set-up menu: Level 2” - sub-section “TIG set-up
parameters”.
The power source cuts out automatically if:
-
the arc breaks
- no current starts to flow within the time-span specified for “Arc”
The message “no|Arc” appears on the control panel.
To make another attempt to achieve ignition, press the torch trigger again.
To dismiss the “no|Arc” message:
-
Press the Store button (13)
TIG pulsing
1/F-P dcY
I
1
I-G
I
t
t
up
t
down
I
S
I
E
Fig.21 TIG pulsing - chronology of the welding-current curve
The diagram below illustrates TIG pulsing in cases where the DC welding process has
been selected.
For details of how to adjust the parameters referred to here, please see the section
headed “The set-up menu: Level 1” - sub-section “TIG set-up parameters”.
Legend:
- I
S
........... Starting current
- I
E
........... Final (i.e. “end”) current
- t
Up
......... Upslope
- t
Down
...... Downslope
- F-P ....... Pulsing frequency (1/F-P =
time interval between 2 pulses)
- dcY ....... Duty cycle
- I-G ........ Background current
- I
1
........... Main current