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B-8
This will keep the "Solid State" contactor open and provide a
"cold" electrode until the Amptrol or Arc Start Switch is pressed.
When using the TIG Module, the OUTPUT CONTROL on the
DX450 is used to set the maximum range of the CURRENT
CONTROL on the TIG Module or an Amptrol if connected to the
TIG Module.
NOTE: The TIG process is to receive a low voltage welding
process. There is no difference in operation with the VRD
"On" or "Off" for this mode. For indicator light operation,
See Table B.1.
WIRE WELDING-CV
Connect a wire feeder to the DX450 according to the instructions
in INSTALLATION INSTRUCTIONS Section.
The DX450 in the CV-WIRE mode, permits it to be used with a
broad range of flux cored wire (Innershield and Outershield)
electrodes and solid wires for MIG welding (gas metal arc weld-
ing). Welding can be finely tuned using the ARC CONTROL.
Turning the ARC CONTROL clockwise from –10 (soft) to +10
(crisp) changes the arc from soft and washed-in to crisp and nar-
row. It acts as an inductance/pinch control. The proper setting
depends on the procedure and operator preference. Start with
the dial set at 0.
NOTE: In the CV-Mode with VRD "On", the OCV(Open Circuit
Voltage) is not reduced. For indicator light operation,
see Table B.1.
ARC GOUGING
The DX450 can be used for arc gouging. For optimal per-
formance, set the MODE switch to ARC GOUGING.
Set the OUTPUT CONTROL knob to adjust output cur-
TABLE B.5 DX450 SIMULTANEOUS WELDING AND POWER LOADS
WELD
AMPS
WATTS
0
11,000
100
11,100
PLUS
200
8,000
300
4,700
400
1,700
500
0
(Use the shortest length extension cord possible sized per the following table.)
Current
Voltage
Load
(Amps)
Volts
(Watts)
15
120
1800
30
20
120
2400
15
240
3600
60
20
240
4800
44
240
9500
OPERATION
1 PHASE
AMPS
WATTS
46
17,000
46
15,400
OR
33
13,000
20
9,400
7
0
TABLE B.6
DX450 Extension Cord Length Recommendations
Maximum Allowable Cord Length in ft. (m) for Conductor Size
14 AWG
12 AWG
(9)
40
(12)
30
(9)
(18)
75
(23)
60
(18)
Conductor size is based on maximum 2.0% voltage drop.
rent to the desired level for the gouging electrode being
used according to the ratings in the following Table B.4.
TABLE B.4
Carbon Diameter
1/8"(3.2mm)
5/32"(4.0mm)
3/16"9(4.8mm)
1/4"(6.4mm)
5/16"(8.0mm)
The ARC CONTROL is not active in the ARC GOUG-
ING Mode. The ARC CONTROL is automatically set to
maximum when the ARC GOUGING mode is selected
which provides the best ARC GOUGING performance.
NOTE: With the VRD switch in the "ON" position there
is no output in the Arc Gouging Mode. For indicator
light operation, see Table B.1.
AUXILIARY POWER:
Start the engine and set the IDLER control switch to
the desired operating mode. Full power is available
regardless of the welding control settings providing no
welding current is being drawn.
Simultaneous Welding and Auxiliary Power Loads
The auxiliary power ratings are with no welding load.
Simultaneous welding and power loads are specified in
Table B.5.
3 PHASE
AMPS
WATTS
41
37
OR
31
23
3,400
8
0
0
10 AWG
8 AWG
75
(23)
125
(38)
50
(15)
88
(27)
150
(46)
225
(69)
100
(30)
175
(53)
50
(15)
90
(27)
DX450
Current Range (DC, electrode
positive)
60-90 Amps
90-150 Amps
200-250 Amps
300-400 Amps
400-Max.Amps
BOTH 1 AND 3 PHASE
AMPS
11,000
-
11,000
-
8,000
-
4,700
-
1,700
-
0
0
6 AWG
4 AWG
175
(53)
300
138
(42)
225
350
(107)
600
275
(84)
450
150
(46)
225
B-8
(91)
(69)
(183)
(137)
(69)
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