HTP Pro Pulse 300, Owner'S Manual

Page: 11 / 37

11
Electrical Connection
Your Pro Pulse 300 operates on single-phase, 230 volt power (208-240 volt). The machine draws 51 amps out of the wall
when operating at a welding output of 300 amps. If you run the Pro Pulse 300 on single-phase power, please carefully
follow the steps below:
 Plug the machine into the power receptacle ( Fig. 3, Pos. T ; you will need to install a plug on the power cable).

Turn the machine on ( Fig. 3, Pos. S ).

Wait 10 to 15 seconds before pressing any buttons or striking an arc.
 Select your process and settings, and then begin welding.
The Pro Pulse 300 automatically recognizes whether you plug into single- or 3-phase power, as well as the voltage you
plug into. The machine requires a 10-15 second wait time, as outlined in Step 3 above, to make internal adjustments to the
power supply.
FAILURE TO WAIT 10-15 SECONDS WILL RENDER THE MACHINE TEMPORARILY
UNUSABLE, and a wait time from 10 minutes up to one hour will be required to reset the machine.
The Pro Pulse 300’s input power cable ( Fig. 3, Pos. T ) contains four wires—one ground wire and three hot wires. You
can easily identify the ground wire thanks to color-coding (either green or green/yellow striped). The machine does not
require a common or neutral wire. If one of the three hot, non-ground wires, is white, connect the wire to a hot leg.
(Although, connecting the third hot wire is not necessary for single-phase operation.)
Alternatively, you can run the Pro Pulse 300 on 3-phase power from 200 to 575 volts; the power draw on 240 volt, 3-
phase power is 31 amps and 15 amps on 480 volt, 3-phase power. If you are planning to use your Pro Pulse 300 on a
generator, you may connect the machine to a single– or 3-phase power generator. Due to the design of the inverter, the
Pro Pulse 300 operates on most generators; however, the Pro Pulse 300 is not compatible with all generators. A Hertz
rating very close to 50 or 60Hz is necessary for proper operation on a generator; noise levels are critical to ensuring
proper operation on a generator. If your generator does NOT meet the requirements, you, most likely, will not be able to
run the Pro Pulse 300 off the generator. However, thanks to sophisticated protective electronics in the Pro Pulse 300,
plugging the machine into a non-suitable generator should not result in damage. In order to run the Pro Pulse 300 on a
generator, it needs to be a generator with a minimum of 12000 watts (12000 watts must be the “continuous rating” or
“running-watts rating” of the generator, NOT the “peak rating” or “starting-watts rating” of the generator).
The Pro Pulse 300 is a synergic welding machine.
The key feature of a synergic welding machine is the ease of set up. In the past, you needed charts from wire
manufacturers to determine wire speed and voltage, as well as CTWD (contact tip to work distance) of different welding
applications, which ultimately determined the arc length and also indicated which shielding gas to use. With the Pro Pulse
300, this information is preprogrammed, readily available, and displayed to you. The Pro Pulse 300 features an LCD that
allows you to select a synergic program for a specific wire, such as steel, aluminum, stainless steel, silicon bronze, etc.
Once you select a program, the machine tells you which gas to use and then allows you to select the thickness of the
material being welding. After selecting the synergic program and the material thickness, the machine automatically sets
the correct wire feed speed (in inches per minute, or IPM) and the matching voltage to achieve the best welding results.
Of course, since you will encounter atypical situations, especially during repairs on used or dirty material, the Pro Pulse
300 gives you the option to adjust the weld either colder or hotter by reducing or increasing the voltage.
The Pro Pulse 300 also offers, just like its little brother the Pro Pulse 200, ST-arc (Short Transfer Arc). The ST-arc
function reads welding parameters back to the welding machine live (while welding). The function monitors the arc
length and keeps the arc length constant, while allowing the stick-out (CTWD) to vary. ST-arc, essentially, allows the
new welder to focus on the location of the weld, as well as the travel speed, and also allows the experienced welder to
keep a perfectly uniform weld bead, along with uniform low heat input, which enables the welder to achieve good welds
in tight corners—a feat that couldn’t be reached previously with conventional welding equipment.
What is pulsed process MIG welding?
For an in-depth explanation of pulsed process MIG welding, please consult the Glossary on Page 34 .