Lincoln Electric Power MIG 350MP User manual

Power MIG® . The Professional’s ChoiceSM .
When you need more than just a IG machine, the Power IG®350 P is
the choice for you. Lincoln Chopper Technology®delivers more welding
processes— IG and flux-cored, along with excellent stick welding, TIG and
advanced processes such as Power ode™and Pulse-on-Pulse®. In addition,
future waveforms of special or improved welding processes can be down-
loaded into the Power IG, making it expandable. This means the welder
you buy today won’t be obsolete tomorrow. Factor in the simplicity and
sophistication of synergic control, and you’ll agree—no other power
source in this category offers so much!
Processes
Stick, TIG, IG, Pulsed, Flux-Cored
WIRE FEEDER/WELDERS
CV
CC
DC
1
PHASE
60
Hz
Publication E7.57 9/07
Web Update 9/08
www.lincolnelectric.com
Advantage Lincoln
Power MIG®350MP Output
Input
(1) 40% on 208V input.
Arc Performance:
•Lincoln Chopper Technology®delivers high quality welds by
increasing the control over the welding arc.
•Multi-Process capable — Welds IG, flux-cored, stick, TIG,
pulsed IG, and advanced processes like Pulse-On-Pulse™and
Power ode®.
•Pulse-on-Pulse™improves cleaning action when welding aluminum
and delivers a TIG-like appearance to the weld beads.
•Power Mode®maintains a stable, smooth arc for short arc welding
on thin material – great arc length control for aluminum welding.
•Synergic control of voltage with wire feed speed allows you
to set weld procedures with only one control for simplicity.
Superb Quality:
•Rugged cast aluminum industrial wire drive features dual driven
rolls, easy-turn numeric tension indicator, brass-to-brass gun con-
nections and Lincoln’s 100% wire-supporting split wire guide sys-
tem.
•Three-year warranty on parts and labor (90 days warranty on gun).
Professional Features:
•Push-Pull or Spool Gun Ready — The Power IG®350MP has the
electronics built-in to drive either a spool gun or push-pull gun giving
you more ways to feed aluminum.
•115V auxiliary receptacle to power a grinder or other auxiliary
equipment in your work area.
•A second gas solenoid is built-in for spool gun use or TIG welding.
•Dual Procedure capable — Easily select between either two welding
procedures or two welding modes.
TECHNICAL SPECIFICATIONS
Dimensions
Product Product Rated Output Input Current @ H x x D Net eight
Name Number Input Power Current/Voltage/Duty Cycle Rated Output Output Range inches (mm) lbs.(kg)
Power IG®350MP
Push-Pull K2451-2 5-350 Amps
One-Pak®odel 50-700 ipm WFS 31.8 x 18.9 x 38.8 255
208/230/460/575/1/60 300A/32V/60%(1) 76/64/37/29A (1.3-17.7 m/min) (808 x 480 x 985) (116)
Power IG®350MP K2403-1 ax. OCV 67V
Push odel

Power MIG®350MP
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[2]
A CLOSER LOOK
Expandability
Load in updated or additional welding waveforms as
your needs expand to other materials. Built-in D-shell
computer connector makes upgrades easy.
Multi-Process/Multi-Feed Capability
One machine does it all! Stick
T G
M G
Pulsed
Flux-Cored
Spool Gun
Push-Pull
3 Ways To Feed Aluminum
• Standard Push Gun
• Spool Gun
• Push-Pull
No PC board add-ons required.
Advanced Nextweld®Processes
nnovations like Pulse-On-Pulse™and Power Mode®
are designed to address specific or difficult
applications, including aluminum and
low amperage short arc welding.
What is Nextweld®?
Nextweld®integrates Lincoln’s technologies,
processes and products to create a comprehensive,
flexible, user-friendly welding system that can
increase efficiency and reduce fabrication costs.
Waveform Control Technology®and digital
communications provide the foundation for Nextweld®innovations
like Pulse-On-Pulse™, Power Mode®. Look for Nextweld®products
for ultimate arc control, high efficiency/reliability and seamless
system integration.
Lincoln Chopper Technology ®
Provides a smooth, stable arc with easy starts, low spatter and
excellent bead appearance.
Traditional weld control is more
variable around the desired
output.
Chopper Technology®or
extremely ast response or
smoother output control.
Chopper Technology®
CV-Wire Mode
Traditional Reactor Technology
CV-Wire Mode
ARC PERFORMANCE
Spool Gun
Ready
MIG/Cored
Push Gun
Push Pull Gun Ready
TIG
Stick

Power MIG®350MP
www.lincolnelectric.com
[3]
A CLOSER LOOK
Lincoln Nextweld®Innovations for Challenging Applications
Waveform Control Technology®makes it possible to take advantage of Lincoln innovations like these patented processes using the
Power M G®350MP power source:
Pulse-On-Pulse™on 3 mm Aluminum
Pulse-On-Pulse™uses a sequence of varying pulse wave shapes to produce
a T G-like bead appearance and excellent weld properties when M G welding
aluminum. Pulse-On-Pulse™controls arc length and heat input together, making
it easier to achieve good penetration.
For more in ormation see Nextweld ®Document NX-2.10
Power Mode reduces spatter and
improves bead appearance,
even or low voltage
procedures on stainless.
Power Mode aids bead
wetting and penetration
on aluminum.
Power Mode®uses high-speed regulation of output
power to deliver extremely fast response to changes in
the arc, for example, when using a whip technique. The
result is improved M G welding performance, including
low spatter, very uniform, consistent bead wetting and
controlled penetration. Power Mode benefits are especially
apparent on low voltage applications on thin steel and
stainless steel material less than 20 gauge (0.7 mm). t
also delivers excellent arc characteristics on aluminum
and other alloys such as silicon bronze and nickel alloys.
For more in ormation see Nextweld ®Document NX-2.60
ARC PERFORMANCE, CON’T.
TIME
WELDING CURRENT
Background
Peak
Ramp Up Tail Out
Step Off
PULSE FREQUENCY
Low Heat
(Background)
High Heat
(Peak)
Pulsed MIG varies weld current between peak (high heat)
and background (low heat) current to provide better control of
heat input, which minimizes warping and burnthrough on thin
materials. Pulsed M G also enables flat, horizontal, vertical up,
or overhead welding without a slag system. t can be used in
hard automation, robotic, and high production semiautomatic
applications. Optimized GMAW-P waveforms are readily avail-
able to use on aluminum, carbon steel, high strength low alloy
steel, stainless steel, and nickel alloys.
For more in ormation see Nextweld ®Document NX-2.70
Synergic MIG
Synergic control of voltage and wire feed speed allows you
to set weld procedures with only one control for simplicity
and ease of use.
Set the wire feed speed and your voltage is automatically
set. Override the setting with the voltage/trim control for
personal preference.
1. Use one
knob to set
procedures.
2. Voltage is auto-
matically set.

Split guides support the wire through the entire
drive system to minimize eeding problems.
Wide idler arm
hinge provides
improved drive
roll clamping
pressure.
Removable outer
wire guide or
easy access.
Input bushing
protects the wire
rom damage.
Reliable brass-to-brass gun receiver bushings provide
connectivity to Magnum or competitive guns. Easier
interchangeability, better mechanical support and
electrical current trans er.
Easy turn
numeric tension
indicator with opti-
mized ranges or
di erent
wire types.
Internal tachometer eedback drive system
allows you to maintain constant wire eed
speed or consistent welds.
Separate drive
gear reduces
pressure on
motor sha t or
long li e.
Two gear driven
rolls. No tools
needed to swap
rolls on or o .
Professional Heavy Duty Wire Drive System
Power MIG®350MP
www.lincolnelectric.com
[4]
A CLOSER LOOK
(1) Included with K2403-1 Push model and K2451-2 Push-Pull One-Pak®model.
(2) Included in the K2153-1 Aluminum Feeding Kit.
(3) Included with K2451-2 Push-Pull One-Pak®model.
DRIVE ROLL KITS
ire Size Order Number
.023"-.030" (0.6-0.8 mm) KP1696-030S
Solid .035" (0.9 mm) KP1696-035S
.035/.045 Combination KP1696-1(1)
.040" (1.0 mm) KP1696-2
.045" (1.2 mm) KP1696-045S
Cored .035" (0.9 mm) KP1697-035C
.045" (1.2 mm) KP1697-045C
Aluminum .035" (0.9 mm) KP1695-035A
3/64" (1.2 mm) KP1695-3/64A(2)(3)
FEATURES
Easy Load Gas Cylinder Plat orm Lockable Storage Compartment
with Tool Tray
115 Volt AC Auxiliary Power Extra Length 15 t. (4.5 m) gun
Accessible Wire Compartment
Additional Gas Solenoid – connect
2-piece TIG torch or control gas low
to a spool gun.
Compare These Innovations Make the Professional’s ChoiceSM!
Handy MIG gun expendables chart
Built-in gun holder
conveniently stores
welding gun.

Key Controls
Easy to use controls for high productivity and accurate settings.
A. Continuous WFS/Amps Control – n wire feed welding, adjusts
wire feed speed. n stick or T G modes, adjusts amperage.
B. Continuous Volts/Trim Control – Adjusts voltage when M G
welding. Adjusts the arc length (trim) when Pulse-M G welding.
Professional’s Choice – weld with traditional manual control or take
advantage of the included MSP3 digital panel for high tech weld
features:
1. Weld Mode – Many synergic modes to select from for simple
one-knob control.
2. Preflow – Adjustable timer to initiate gas flow before the arc.
3. Post-Flow – Further protect your weld integrity by automatically
setting the gas to run a few seconds after the trigger is released.
4. Run- n – Adjustable speed at which wire strikes the plate to
enhance starting.
5. Start Procedure – Set start procedure, wire feed speed and volts
for an adjustable starting time.
6. Arc Control – Set arc control to crisp or soft depending on your
preference and application. n pulsed M G, this control varies
the pulse frequency and background current. n Stick mode, it
adjusts the arc force.
7. Crater Control – Adjusts the ending weld procedure and ramp
down time.
8. Burnback – Adjustable time delay between turning off the arc
and the wire feed to prevent wire sticking to the puddle.
9. Spot Timer – Adjustable arc time for repetitive tack and spot
welds.
Power MIG®350MP
www.lincolnelectric.com
[5]
A CLOSER LOOK
Python®-Plus Air-Cooled Push-Pull Guns
Features the same Magnum®back end as the Magnum®300 gun,
eliminating the need for the K2154-1 adapter. Effortless, fast
changes between Magnum®300 M G gun and Python®-Plus
push-pull gun.
• 15 ft. (4.5 m) Order K2447-1
• 25 ft. (7.6 m) Order K2447-2
• 50 ft. (15.2 m) Order K2447-3 (Note: Standard air-cooled and water-cooled Python®, CobraMax™and
Prince®XL push-pull guns still require the K2154-1 connection kit.)
A
B
1-9
1
FEATURES, CON’T.
Push-Pull Gun
Best performance for production
aluminum welding - Use larger spools.
Spool Gun
Better feeding with
integrated 2 lb. spools
Push Gun
Good for occasional
aluminum work
3 Ways To Feed Aluminum
Better BestGood
Base Unit Includes:
Push Model (K2403-1): Power IG®350MP, agnum®300 Gun 15 ft. (4.5 m), .035" (0.9 mm)/.045" (1.2 mm) Drive Rolls and Guide for Steel,
Regulator and Hose, Work Clamp and Cable, 230V Input Cord and Plug.
Push-Pull One-Pak®Model (K2451-2): Includes Power IG®350MP (K2403-1) push model, Python®-Plus push-pull gun 25 ft. (K2447-2), 3/64
Aluminum Drive Roll Kit (KP1695-3/64A).

Power MIG®350MP
www.lincolnelectric.com
[6]
RECOMMENDED OPTIONS
GENERAL OPTIONS
Dual Cylinder Mounting Kit
Permits side-by-side mounting of
two full size gas cylinders, with
easy loading. Attaches easily to
Power M G undercarriage.
Order K1702-1
Canvas Cover
Protect your Power M G®when not
in use. Made from attractive red
canvas that is flame retardant,
mildew resistant and water repel-
lent. Fits any Power M G®machine
with or without a gas cylinder in
the cylinder rack. Will not fit if
spool gun holder is attached to the
machine.
Order K2378-1
STICK OPTIONS
Accessory Kit
Complete kit for stick
welding. ncludes 30 ft. (9.1 m)
electrode cable, 25 ft. (7.6 m)
work cable, headshield,
work clamp and electrode
holder.
Order K875 for 150 amps
Order K704 for 400 amps
Remote Output Control
Consists of a control box with
choice of two cable lengths.
Permits remote adjustment of
output.
Order K857 for 25 ft. (7.6 m)
Order K857-1 for 100 ft. (30.5 m)
TIG OPTIONS
PTA-17 150 Amp Air-Cooled
TIG Torch
Order K1782-2
for 12.5 ft. (3.8 m) length, 2-cable
Order K1782-4
for 25 ft. (7.6 m) length, 2-cable
PTA-26 200 Amp Air-Cooled
TIG Torch
Order K1783-2
for 12.5 ft. (3.8 m) length, 2-cable
Order K1783-4
for 25 ft. (7.6 m) length, 2-cable
Parts Kits
Magnum®Parts Kits provide all
the torch accessories you need to
start welding. Parts kits provide
collets, collet bodies, a back cap,
alumina nozzles and tungstens in
a variety of sizes, all packaged in
an easy to carry reclosable box.
Order KP508 for PTA-17
Order KP509 for PTA-26
Foot Amptrol®
Provides 25 ft. (7.6 m) of remote
current control for T G welding.
(6-pin plug connection).
Order K870
Hand Amptrol®
Provides 25 ft. (7.6 m) of remote
current control for T G welding.
(6-pin plug connection)
Order K963-3
Arc Start Switch
Needed if an Amptrol®is not used
when T G welding. Comes with a
25 ft. (7.6 m) cable. Attaches to
the T G torch for convenient finger
control.
Order K814
Cut Length Consumables
T G welding filler metals are avail-
able for welding stainless steel,
mild steel, aluminum and copper
alloys.
See publication C9.10
WIRE FEEDER OPTIONS
Aluminum Feeding Kit
Conversion kit for welding with
3/64" (1.2 mm) aluminum wire.
ncludes drive rolls, contact tips
(qty. 2), polished wire guides and
cable liner.
Order K2153-1
Fast-Mate™Adapter
Allows guns with a Fast-Mate™
type back end to plug into a
Power M G®.
Order K489-8

Power MIG®350MP
www.lincolnelectric.com
[7]
RECOMMENDED OPTIONS
Dual Procedure Switch
Easily mounts to gun using
convenient velcro straps to allow
welding operators to select
between two preset welding
procedures or modes. Plugs into
the gun trigger connector on the
wire feeder.
Order K2449-1
Magnum®250LX™Spool Gun
280 amps, 60% duty cycle. Feeds
.025"-3/64" (0.6-1.2 mm) diameter
aluminum wire on 2 lb. (0.9 kg)
spools. With remote wire feed
speed control. 25 ft. (7.6 m) cable.
Order K2490-1
Magnum®250LX™Spool Gun
Control Cable Extension
Extend your spool gun reach with
a 25 ft. (7.6 m) Control Cable
Extension. Features a 7-pin
female MS-type connector on the
spool gun end and a 7-pin male
MS-type connector on the power
source end.
Order K2519-1
Spool Gun Holder
Provides neat storage of spool
gun cable, and gas hose on
Power M G.
Order K1738-1
Python®-Plus Air-Cooled
Push-Pull Gun
The Python®-Plus push-pull gun
features the same great perform-
ance and ergonomics as the stan-
dard Python®gun but features a
Magnum®style back end for easy
connection to a Lincoln®Power
M G®without an adapter. The
ergonomic handle design, finger-
tip controls and foolproof set-up
make the Python®the most
advanced gooseneck gun on the
market. The Python®-Plus gun
with standard air-cooled barrel is
rated 200A @100% duty cycle,
250A @50% duty cycle.
Order K2447-1
for Air-Cooled 15 ft. (4.5 m)
Order K2447-2
for Air-Cooled 25 ft. (7.6 m)
Order K2447-3
for Air-Cooled 50 ft. (15.2 m)
Prince®XL Push-Pull Gun
The Prince®XL is the smallest,
lightest pistol grip push-pull gun
you can buy. Choose the standard
straight barrel or optional curved
barrel with ratings up to 225 amps
100% duty cycle. The patented
EZ-Lock system make rotating or
changing the barrel an easy no-
tool twist of the wrist.
Order K2296-2
for Air-Cooled 25 ft. (7.6 m)
Push-Pull Gun Connection Kit
Required for aluminum welding
with the Prince®XL, Python®*and
CobraMax™air or water-cooled
push-pull guns. ncludes power
block, gun bushing, gas hose
adapter, gun gas bypass valve
(required for Prince®XL Gun only),
and wire reel brake limiter.
Requires aluminum drive roll kit.
*Not required or Python®-Plus
Guns.
Order K2154-1
Spindle Adapter for
Small Spools
Permits 8" (200 mm) O.D. spools
to be mounted on 2" (51 mm)
O.D. spindles.
Order K468
Welding Fume Extractors
Lincoln offers a wide variety
of welding fume extraction
environmental system solutions,
ranging from portable systems
easily wheeled around the shop
to shop-wide central systems
servicing many dedicated welding
stations.
Request Publication E13.40

POWER MIG®350MP PUSH MODEL 208/230/460/575/1/60 K2403-1
POWER MIG®350MP PUSH-PULL ONE-PAK®MODEL K2451-2
RECOMMENDED GENERAL OPTIONS
Dual Cylinder Mounting Kit K1702-1
Canvas Cover K2378-1
RECOMMENDED STICK OPTIONS
Accessory Kit:
150 amps K875
400 amps K704
Remote Output Control:
25 ft. (7.6 m) K857
100 ft. (15.2 m) K857-1
RECOMMENDED TIG OPTIONS
Pro-Torch™T G Torches See publication E12.150
Part Kits:
For PTA-17 KP508
For PTA-26 KP509
Foot Amptrol®K870
Hand Amptrol®K963-3
Arc Start Switch K814
Cut Length Consumables See publication C9.10
RECOMMENDED WIRE FEEDER OPTIONS
Aluminum Feeding Kit K2153-1
Fast-Mate™Adapter K489-8
Dual Procedure Switch K2449-1
Magnum®250LX™Spool Gun K2490-1
Spool Gun Holder K1738-1
Python®-Plus Air-Cooled Push-Pull Gun
15 ft. (4.5 m) K2447-1
25 ft. (7.6 m) K2447-2
50 ft. (15.2 m) K2447-3
Prince®XL Push-Pull Gun Air-cooled, 25 ft. (7.6 m) K2296-2
Push-Pull Gun Connection Kit K2154-1
Spindle Adapter for Small Spools K468
Welding Fume Extractors See publication E13.40
TOTAL:
THE LINCOLN ELECTRIC COMPANY®
22801 St. Clair Ave., Cleveland, OH 44117-1199 • 216.481.8100 • www.lincolnelectric.com
POWER MIG®350MP ORDER FORM
PRODUCT DESCRIPTION ORDER NUMBER QUANTITY PRICE
CUSTOMER ASSISTANCE POLICY
The business of The Lincoln Electric Company®is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of
our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric for information or advice about their use of our products. Our employees respond to
inquiries to the best of their ability based on information provided to them by the customers and the knowledge they may have concerning the application. Our employees, however, are not
in a position to verify the information provided or to evaluate the engineering requirements for the particular weldment. Accordingly, Lincoln Electric does not warrant or guarantee or assume
any liability with respect to such information or advice. Moreover, the provision of such information or advice does not create, expand, or alter any warranty on our products. Any express or
implied warranty that might arise from the information or advice, including any implied warranty of merchantability or any warranty of fitness for any customers’ particular purpose is
specifically disclaimed.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the
customer. Many variables beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.