Equipment Setup - Miller XMT 350 VS Auto-Line w/WCC Owner's Manual

5-3. Equipment Setup

.
During WCC operation, preset weld
voltage and wire feed speed are set at the
wire feeder front panel.
Associating a WCC compatible wire feed-
er, and WCC welding power source:
1 On power source- set front panel mode
switch to any process except LIFT ARC
TIG (Power source will not associate in
LIFT ARC TIG mode).
On wire feeder - set CC/CV switch to
CV. The feeder will not associate to a
WCC power source if the feeder is set
to CC.
2 The welding power source voltage
display alternates between preset
voltage (set at the welding power
source) and open circuit voltage. The
wire feeder voltage display will alternate
between three dashes and open circuit
voltage.
3 For the wire feeder to control the
welding power source the wire feeder
must be associated to it. If wire feeder is
not associated to the power source, the
wire feeder will try to associate when the
trigger is pulled. To associate the wire
feeder to the power source, pull and
hold the welding gun trigger − DO NOT
STRIKE AN ARC. While the association
Notes
OM-252 340 Page 16
process is taking place the decimal
points on the wire feeder voltage display
will blink. When associated, the decimal
points stop blinking and the REMOTE IN
USE light on the power source front
panel will light and preset voltage is
displayed. Release trigger on welding
gun after preset voltage is displayed.
The association process may take up to
five seconds to complete.
4 Once association is complete the
voltage display on the wire feeder will
alternate between preset voltage and
open circuit voltage. The voltage display
on the welding power source will
alternate between preset voltage (set by
the wire feeder) and open circuit
voltage. Preset voltages between the
wire feeder and the welding power
source should be within 0.5 volt of each
other.
5 While adjusting the voltage control on
the feeder the voltage display will show
only preset voltage. Ten seconds after
the preset voltage has been set the
display will alternate between preset
voltage and open circuit voltage.
6 While welding the welding power source
displays weld voltage at the studs. The
wire feeder displays weld voltage at wire
feeder.
7 While welding, due to voltage drops in
the weld cable, voltage displays at wire
feeder and welding power source may
not match. The preset voltage at wire
feeder may need to be set to a higher
value to compensate for voltage drop of
the weld cable. For example, if welding
voltage of 18 volts is desired at the wire
feeder and there is a 4 volt drop in the
weld cable, the preset voltage at the
wire feeder should be 22 volts. (18V +
4V = 22V).
8 Once wire feeder and power source are
associated, they will stay associated
until either the wire feeder or welding
power source loses power. The wire
feeder can lose power for up to ten
seconds and still recover its association
with the power source. This is for
situations where the wire feeder may
momentarily lose power due to a
prolonged short circuit condition in the
welding process.
9 If the CC/CV switch on the feeder is
changed to CC the feeder will still be
associated. The feeder Voltage display
will show CC. The voltage knob on
feeder will still control voltage output on
the power source but the WFS will run
about 150 IPM less than the present
speed.