ESAB MultiPower 460 Pulse Instruction Manual Download Page 33

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SECTION 4

OPERATION

4. SHIELDING GASES

Table 4-2 lists the types of shielding gas mixtures that can be used with the
MultiPower 460 Pulse. The wire burn-off rate and synergic operation can vary
with changes in shielding gas. The TRIM knob is used to compensate for small
changes in shield gas composition.

5. SYNERGIC PULSE OPERATION

The MultiPower 460 Pulse is shipped with Pulse Mig set for synergic operation.
Synergic pulsed Mig welding means that pulse parameters, such as pulse
height, pulse width, background current and pulse frequency, are automatically
preset based on the WIRE TYPE, WIRE DIAMETER and wire feed speed
selected. These parameters are further adjusted by the MultiPower 460 Pulse
as the wire feed speed is changed by the operator. If a TRIM adjustment has
been made to the synergic parameters, this offset will automatically track as
the operator changes wire feed speed.

6. NON-SYNERGIC PULSE OPERATION

The MultiPower 460 Pulse has the unique ability to Pulse MIG weld in the NON-
SYNERGIC mode. Non-synergic operation means the pulse parmeters can be
selected by choosing the WIRE TYPE, WIRE DIAMETER, and presetting a
WIRE FEED SPEED on the MultiPower 460 Pulse panel. The pulse frequency
or arc length (TRIM) is controlled by the TRIM knob. The TRIM knob is
adjustable from the minimum to maximum pulse frequency range and does not
track with changes in wire feed speed. A change in wire feed speed will require
a re-adjustment of the arc length TRIM.

There are several unique advantages to Non Synergic pulse mig welding. The
Non -Synergic mode of operation permits pulse welding when:

a. A wire feeder without tachometer feedback is used.
b. An "Off the Arc" wire feeder is used
c. The Mig wire type or diameter installed on the wire feeder does not have

a pulse synergic line available..

d. Pulse arc characteristics other than those preprogrammed are desired.

By using a combination of adjusting the wire feed speed on the wire feeder and
TRIM setting on the MultiPower 460 Pulse, the pulse Mig welding arc can be
tune in and stabilized. The selectable pulse parameters are any combination
of WIRE TYPE or WIRE DIAMETER selected using the PULSE SELECTION
switches. Not all combinations will produce acceptable pulse characteristics
but, in many cases, resonable pulse arc welding stability can be achieved using
WIRE TYPE, WIRE DIAMETER, WFS, TRIM and shield gas combinations
selected. This will take some trial and error but the added flexibility and
expanded pulse range of the non-synergic mode can be beneficial for specialtiy
or rare welding applications.

To take advantage of the MultiPower 460 Pulse Non-Synergic mode, it is
necessary to reposition a jumper plug and/or connector in the main control
panel wiring harness. Remove the MultiPower 460 control panel and locate the
jumper plug in the wiring harness in the PC board compartment.

Jumper Plug Installed (Factory Shipped)
Synergic Mode

- Pulse circuitry is looking for a 1 volt per 100 inches per

minute signal to determine the pulse parameters required to make the weld.

Note:

If using a wire feeder that gener-
ates a 1 volt per 100 IPM signal

and

the MP-460 is configured for

the Non-Synergic pulse operation,
disconnect and insulate the wire
carrying the 1 V/100 IPM signal.

For DuraDrive feeders disconnect
the wire at TB1-5 in the wire feeder.

For a Mig 4HD feeder disconnect
the violet wire between P3-3 and
P1-R.