ESAB MultiPower 460 Pulse Manual de instrucciones Pagina 27

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SECTION 4
OPERATION
F. TIG WELDING
When the PROCESS switch is placed in the TIG position, the MultiPower 460
is automatically set for CC (constant current) welding using the ESAB Touch
TIG starting method. The voltage and current at the output lugs is maintained
at low values until the tungsten electrode is shorted to the workpiece.
Step 1. Be sure to set the polarity to DCEN (Electrode Negative) by con-
necting the Tig torch to the negative terminal lug on the front of the
power source.
Step 2. Place the WELD PROCESS switch in the TIG position.
Step 3. Place the PANEL/REMOTE switch in the PANEL position.
Step 4. While depressing the PRESET button, turn the VOLTAGE/CURRENT
knob to the desired weld current as displayed on the top digital dis-
play window.
Step 5. Set the shielding gas flow rate to 20 cfh by adjusting the control knob
on the flowmeter.
Step 6. Touch the tungsten electrode to the workpiece momentarily then lift
1/16" off the workpiece to establish the welding arc. Trim the weld
current as desired by turning the VOLTAGE/CURRENT knob.
NOTE
If a Foot Control or Remote Hand Control
is used for continuous current control,
place the PANEL/REMOTE switch in the
PANEL POSITION and set the Panel Cur-
rent knob to the maximum desired weld
current. The remote device will then con-
trol the current between minimum and the
maximum setting preset (proportional
current control). Maximum Tig weld cur-
rent is 525 amps.
G. STICK WELDING
When the PROCESS switch is placed in the STICK position, the MultiPower
460 establishes open circuit voltage (OCV) and output power is immediately
available for welding. This means that the STICK electrode holder is “HOT”, and
an arc will strike when the electrode comes in contact with the workpiece or
any other object at ground potential.
NOTE
The FC-5B foot control or TC-2B hand
control must be used with the MP-460 for
remote current Tig current control.
NOTE
If the MP-460 PANEL/REMOTE switch
is left in the REMOTE position when Tig
welding while using a remote current
control device, the current range will
be full scale or 10 to 400 Amps.
Limiting the the maximum weld current
(proportional current control) using the
currnet control on the MP-460 front
panel is defeated.
NOTE
When using a DuraDrive wire feeder
(or any wire feeder with Remote
Voltage control from the feeder front
panel) connected simultaneously with
a remote current control Tig device
(FC-5B or TC-2B), proportional control
of the TIG remote current will be
controlled by the position of the feeder
voltage control knob when the PANEL/
REMOTE switch is in the REMOTE
position. When in the PANEL position
the maximum current of the remote
device is controlled by the MP-460
front panel current control preset.
Step 3 Step 2
Step 4
Figure 4-2 Standard Tig Setup Procedure
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