Table of Contents
Advertisement
7-4. Pulsed MIG Welding Mode - GMAW-P Process
!
Weld
terminals
are
through the remote control in
Pulsed MIG welding mode.
1
Mode Switch
2
Volts Indicator
3
Left Display
4
Right Display
5
Arc Length Indicator
6
Adjust Control
7
Wire Type Indicator
8
Arc Control Indicator
9
Setup Button
10 Gas Type Indicator
Setup
For typical system connections refer to
Section 7-1.
Rotate Mode Switch to PULSED MIG posi-
tion as shown.
The trim setting is shown in the Left Display
with the Arc Length Indicator lit.
Operation
While the Arc Length Indicator is lit under
the Left Display, the Adjust Control is used
to set desired trim setting.
.
The trim can be adjusted remotely at
the wire feeder if the feeder has a volt-
age control. This voltage control will
override the Adjust Control of trim on
the welding power source.
Pressing the Setup Button allows adjust-
ment of Arc Control, Wire Type, Gas Type
and Arc Length.
.
For best results, select the appropriate
Wire and Gas Type to match the actual
wire and gas being used. Refer to
2
3
25.0
Pulsed MIG − Wire and Gas Selection
energized
Table for available wires and gases
(see Section 7-5).
Selecting a Wire and Gas
Press the Setup Button repeatedly until the
Wire Type indicator is lit. The active Wire
Type will appear in the Left and Right Dis-
play.
Rotate Adjust Control to select desired
wire.
Press the Setup Button again so the Gas
Type indicator is lit. The active Gas Type
will appear in the Left and Right Display.
Rotate Adjust Control to select desired gas.
Press the Setup Button again to confirm the
selection. The unit will acknowledge a
change of wire and gas information by dis-
playing PROG LOAD momentarily.
Arc Control (SharpArc)
Press the Setup Button repeatedly until the
Arc Control indicator is lit. SHRP appears
on the Left Display, and the corresponding
SharpArc setting appears on the Right Dis-
play.
Rotate Adjust Control to select desired
SharpArc setting from 0 to 50, default is 25.
Adjusting the SharpArc setting changes the
welding arc cone. Lower settings widen the
arc cone, increases puddle fluidity and flat-
tens the weld bead appearance.
Higher settings narrow the arc cone, re-
duces puddle fluidity and crowns the weld
bead appearance.
.
Each Wire and Gas Type combination
has independent Arc Length and Shar-
pArc settings. These settings are pre-
served when the unit is turned off.
5
4
6
1
Arc Length - Pulsed MIG Manual Control
(see Section 5-3)
Arc length corresponds to the level of ener-
gy needed to burn off the welding electrode.
As wire feed speed increases, a higher arc
length setting is required to burn off the
additional wire. The arc length setting ap-
pears in the Left Display when the Arc
Length Indicator is lit. Arc length can be ad-
justed from 0 to 100.
After the welding output terminals are ener-
gized, but prior to arc initiation, the unit dis-
plays the letter "R" and a reference wire
speed (IPM) on the Right Display. The ref-
erence wire speed can be used as a start-
ing point for the wire speed setting at the
feeder. The wire speed and arc length set-
ting can then be further adjusted to achieve
the desired arc length.
The Configuration Option Menu (see Sec-
tion 5-1) can be used to change the arc
length setting (0 to 100) to average arc volt-
age. Average arc voltage can be used as an
alternative method to set the Pulsed MIG
welding arc with the same parameters
(voltage and wire speed) as a conventional
MIG arc. Lower voltage settings corre-
spond to tighter arc lengths while higher
voltage settings correspond to longer arc
lengths. If the voltage mode is selected, the
average voltage preset will be displayed on
the Left Display with the Volts Indicator lit.
Arc Length - Pulsed MIG Auto Control
(see Section 5-3)
In Auto operation the arc length setting is
0-100. The programs have been developed
at 50 arc length setting. Increasing or de-
creasing the arc length setting from 50 will
change the arc length. It is not necessary to
change the arc length value when changing
wire feed speed settings.
7
8
9
10
226 611-A
OM-237 881 Page 31
Advertisement
Table of Contents
Troubleshooting
