ESAB ET 220i AC/DC, Руководство по эксплуатации

Страница: 27 / 74

ET 220I AC/DC
Manual 0-5346 INSTALLATION, OPERATION AND SETUP
3-15
Parameter Range LED Code
(Left Display)
Parameter Value
(Right Display)
Factory
Setting
Back Ground Current
This parameter operates in GTAW
Pulse modes only and sets the
GTAW Back Ground Current. The
lowest point in the pulse is called the
Trough.
1 – 200% of Welding
Current A1
The maximum
welding current
in GTAW mode is
limited to 220A for
the ET 220i AC/DC.
50
Down Slope Time
This parameter operates in GTAW
modes only and is used to set the
time for the weld current to ramp
down to the crater current. This
control is used to eliminate the crater
that can form at the completion of a
weld.
0 – 99% 20
Crater Current AE
This parameter operates in GTAW
modes only.
This is the current at the end of
the down slope current ramp. The
welding current will remain at
the Crater Current value until the
Crater Current Time has elapsed, at
which time the welding current will
cease and the unit will enter Post
Flow mode. This control is used to
eliminate the crater that can form at
the completion of a weld.
5 – 200% of Welding
Current A1
The maximum
welding current
in GTAW mode is
limited to 220A for
the ET 220i AC/DC.
25
Crater Current Time tE
This parameter operates in GTAW
modes only and is used to set the time
for the crater current before entering
post flow mode. This control is used
to eliminate the crater that can form
at the completion of a weld.
0 – 20 seconds 0.2
Shielding Gas Post-Flow time
This parameter operates in GTAW
modes only and is used to adjust the
post gas flow time once the arc has
extinguished. This control is used to
dramatically reduce oxidation of the
tungsten electrode.
20 – 500%
100