Section 6 − Operation; Front Panel Controls - Miller XMT 350 CC/CV Auto-Line Owner's Manual

6-1. Front Panel Controls

.
Weld process operation sections de-
scribe functionality of the identified items
(See Sections 7-2 thru 9-3).
.
The fan motor is thermostatically con-
trolled and only runs when cooling is
needed.
1 Remote 14 Receptacle
For remote control, make connections to Re-
mote 14 receptacle. In TIG and STICK modes
the remote control is a percent of V/A Adjust
control setting (value selected on V/A Adjust
is maximum available on remote). In the MIG
mode, remote control provides full range of
unit output regardless of V/A Adjust control
setting.
2 Left Display
3 Right Display
.
The meters display the actual weld output
OM-2247 Page 26
SECTION 6 − OPERATION
2
1
10
9
8
values after arc initiation and remains dis-
played for approximately three seconds
after the arc is broken.
4 Adjust Control
5 Arc Control
Control adjusts Dig when Stick or CC mode is
selected on mode switch. When set towards
minimum, short-circuit amperage at low arc
voltage is the same as normal welding
amperage.
When set towards maximum, short-circuit
amperage is increased at low arc voltage to
assist with arc starts as well as reduce stick-
ing while welding.
Select setting best suited for application.
Control adjusts inductance when MIG or
V-Sense Feeder position is selected on the
mode switch. Inductance (0-100%) deter-
mines the "wetness" of the weld puddle. When
3
7
set towards maximum, "wetness" (puddle
fluidity) increases.
For self-shielding wires (FCAW) adjust arc
control to FCAW setting.
When Pulsed MIG or one of the TIG modes is
selected, this control is not functional.
6 Power Switch
7 Mode Switch
The Mode switch setting determines both the
process and output On/Off control (see Sec-
tion 6-2).
For Air Carbon Arc (CAC-A) cutting and goug-
ing, place switch in Stick position. For best re-
sults, place Arc Control in the maximum posi-
tion.
8 Weld Output Terminal (−)
9 Optional Gas Valve Knockout
10 Weld Output Terminal (+)
4
5
6
Ref. 803 692-B / Ref. 239 083-A