Lincoln Electric Power MIG 350MP User Manual

WIRE FEEDER/WELDERS

CV

CC

DC

1

PHASE

60

Hz

Power MIG®350MP

Power MIG®. The Professional’s ChoiceSM.

When you need more than just a MIG machine, the Power MIG®350MP is
the choice for you. Lincoln Chopper Technology
processes—MIG and flux-cored, along with excellent stick welding, TIG and
advanced processes such as Power Mode

™

and Pulse-on-Pulse®. In addition,
future waveforms of special or improved welding processes can be down­loaded into the Power MIG, 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, MIG, Pulsed, Flux-Cored

Advantage Lincoln

Arc Performance:

• Lincoln Chopper Technology®delivers high quality welds by

increasing the control over the welding arc.

• Multi-Process capable — Welds MIG, flux-cored, stick, TIG,

pulsed MIG, and advanced processes like Pulse-On-Pulse
Power Mode

• Pulse-on-Pulse™improves cleaning action when welding aluminum

and delivers a TIG-like appearance to the weld beads.

• Power Mode

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.

®

.

®

maintains a stable, smooth arc for short arc welding

®

delivers more welding

™

and

Superb Quality:

• Rugged cast aluminum industrial wire drive features dual driven

rolls, easy-turn numeric tension indicator, brass-to-brass gun con­nections and Lincoln’s 100% wire-supporting split wire guide sys­tem.

• Three-year warranty on parts and labor (90 days warranty on gun).

Professional Features:

• Push-Pull or Spool Gun Ready — The Power MIG

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.

Output

Input

®

350MP has the

TECHNICAL SPECIFICATIONS

Product Product Rated Output Input Current @ H x W x D Net Weight

Name Number Input Power Current/Voltage/Duty Cycle Rated Output Output Range inches (mm) lbs.(kg)

®

Power MIG

One-Pak

Power MIG

(1)

40% on 208V input.

350MP

Push-Pull K2451-2 5-350 Amps

®

Model 50-700 ipm WFS 31.8 x 18.9 x 38.8 255

®

350MP K2403-1 Max. OCV 67V

Push Model

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)

Dimensions

Publication E7.57 9/07

Web Update 9/08

www.lincolnelectric.com

A CLOSER LOOK

Push-Pull Gun Ready

ARC PERFORMANCE

Multi-Process/Multi-Feed Capability

One machine does it all! Stick

Flux-Cored
Spool Gun
Push-Pull

Advanced Nextweld

Innovations like Pulse-On-Pulse™and Power Mode

are designed to address specific or difficult

applications, including aluminum and

low amperage short arc welding.

3 Ways To Feed Aluminum

No PC board add-ons required.

Load in updated or additional welding waveforms as

your needs expand to other materials. Built-in D-shell

computer connector makes upgrades easy.

®

Processes

• Standard Push Gun

• Spool Gun

• Push-Pull

Expandability

MIG

Pulsed

®

TIG

Spool Gun
Ready

MIG/Cored
Push Gun

TIG

Stick

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

Lincoln Chopper Technology

Provides a smooth, stable arc with easy starts, low spatter and
excellent bead appearance.

Chopper Technology
extremely fast response for
smoother output control.

®

for

®

Chopper Technology

CV-Wire Mode

®

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.

Traditional weld control is more
variable around the desired
output.

Traditional Reactor Technology
CV-Wire Mode

Power MIG®350MP

[2]

www.lincolnelectric.com

A CLOSER LOOK

TIME

WELDING CURRENT

Background

Peak

Ramp Up

Tail Out

Step Off

PULSE FREQUENCY

Low Heat

(Background)

High Heat

(Peak)

ARC PERFORMANCE, CON’T.

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 MIG

®

350MP power source:

Pulse-On-Pulse

a TIG-like bead appearance and excellent weld properties when MIG welding
aluminum. Pulse-On-Pulse
it easier to achieve good penetration.

For more information see Nextweld

Pulse-On-Pulse™on 3 mm Aluminum

Power Mode

power to deliver extremely fast response to changes in
the arc, for example, when using a whip technique. The
result is improved MIG 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). It
also delivers excellent arc characteristics on aluminum
and other alloys such as silicon bronze and nickel alloys.

For more information see Nextweld®Document NX-2.60

®

uses high-speed regulation of output

™

uses a sequence of varying pulse wave shapes to produce

™

controls arc length and heat input together, making

®

Document NX-2.10

Power Mode reduces spatter and

improves bead appearance,

even for low voltage

procedures on stainless.

Power Mode aids bead

wetting and penetration

on aluminum.

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.

[3]

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 MIG also enables flat, horizontal, vertical up,
or overhead welding without a slag system. It can be used in
hard automation, robotic, and high production semiautomatic
applications. Optimized GMAW-P waveforms are readily avail­able to use on aluminum, carbon steel, high strength low alloy
steel, stainless steel, and nickel alloys.

For more information see Nextweld®Document NX-2.70

2. Voltage is auto­matically set.

1. Use one
knob to set
procedures.

Power MIG®350MP

www.lincolnelectric.com

A CLOSER LOOK

FEATURES

Compare These Innovations – Make the Professional’s ChoiceSM!

115 Volt AC Auxiliary Power

Easy Load Gas Cylinder Platform

Professional Heavy Duty Wire Drive System

Internal tachometer feedback drive system

allows you to maintain constant wire feed

speed for consistent welds.

Split guides support the wire through the entire

drive system to minimize feeding problems.

Reliable brass-to-brass gun receiver bushings provide

connectivity to Magnum or competitive guns. Easier

interchangeability, better mechanical support and

dditional Gas Solenoid – connect

A

-piece TIG torch or control gas flow

2
to a spool gun.

Accessible Wire Compartment

electrical current transfer.

xtra Length 15 ft. (4.5 m) gun

E

Handy MIG gun expendables chart

Lockable Storage Compartment

ith Tool Tray

w

Easy turn
numeric tension
indicator with opti­mized ranges for
different
wire types.

Built-in gun holder

onveniently stores

c
welding gun.

Wide idler arm
hinge provides
improved drive
roll clamping
pressure.

Input bushing
protects the wire
from damage.

Two gear driven
rolls. No tools
needed to swap
rolls on or off.

DRIVE ROLL KITS

Wire Size Order Number

Solid .035" (0.9 mm) KP1696-035S

Cored

Aluminum

.023"-.030" (0.6-0.8 mm) KP1696-030S

.035/.045 Combination KP1696-1
.040" (1.0 mm) KP1696-2
.045" (1.2 mm) KP1696-045S

.035" (0.9 mm) KP1697-035C
.045" (1.2 mm) KP1697-045C

.035" (0.9 mm) KP1695-035A
3/64" (1.2 mm) KP1695-3/64A

Separate drive
gear reduces
pressure on
motor shaft for
long life.

(1)

(2)(3)

(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.

Removable outer
wire guide for
easy access.

Power MIG®350MP

[4]

www.lincolnelectric.com

A CLOSER LOOK

FEATURES, CON’T.

Key Controls

Easy to use controls for high productivity and accurate settings.

A. Continuous WFS/Amps Control – In wire feed welding, adjusts

wire feed speed. In stick or TIG modes, adjusts amperage.

B. Continuous Volts/Trim Control – Adjusts voltage when MIG

welding. Adjusts the arc length (trim) when Pulse-MIG 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-In – 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. In pulsed MIG, this control varies
the pulse frequency and background current. In Stick mode, it
adjusts the arc force.

7. Crater Control – Adjusts the ending weld procedure and ramp
down time.

A

B

1-9

1

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.

3 Ways To Feed Aluminum

Better BestGood

Push Gun

Good for occasional
aluminum work

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 MIG 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

Base Unit Includes:

Push Model (K2403-1): Power MIG
Regulator and Hose, Work Clamp and Cable, 230V Input Cord and Plug.

Push-Pull One-Pak

®

Model (K2451-2): Includes Power MIG®350MP (K2403-1) push model, Python®-Plus push-pull gun 25 ft. (K2447-2), 3/64

Aluminum Drive Roll Kit (KP1695-3/64A).

®

350MP, Magnum®300 Gun 15 ft. (4.5 m), .035" (0.9 mm)/.045" (1.2 mm) Drive Rolls and Guide for Steel,

Spool Gun

Better feeding with
integrated 2 lb. spools

Push-Pull Gun

Best performance for production
aluminum welding - Use larger spools.

(Note: Standard air-cooled and water-cooled Python®, CobraMax™and

®

XL push-pull guns still require the K2154-1 connection kit.)

Prince

[5]

Power MIG®350MP

www.lincolnelectric.com

RECOMMENDED OPTIONS

ENERAL OPTIONS

G

Dual Cylinder Mounting Kit

Permits side-by-side mounting of
two full size gas cylinders, with
easy loading. Attaches easily to
Power MIG undercarriage.

Order K1702-1

Canvas Cover

Protect your Power MIG®when not
in use. Made from attractive red
canvas that is flame retardant,
mildew resistant and water repel­lent. Fits any Power MIG®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

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 TIG welding.
(6-pin plug connection).

Order K870

Hand Amptrol

®

Provides 25 ft. (7.6 m) of remote
current control for TIG welding.
(6-pin plug connection)

Order K963-3

Accessory Kit

Complete kit for stick
welding. Includes 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

Arc Start Switch

Needed if an Amptrol®is not used
when TIG welding. Comes with a
25 ft. (7.6 m) cable. Attaches to
the TIG torch for convenient finger
control.

Order K814

Cut Length Consumables

TIG welding filler metals are avail­able 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.
Includes drive rolls, contact tips
(qty. 2), polished wire guides and
cable liner.

Order K2153-1

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

[6]

Fast-Mate™Adapter

Allows guns with a Fast-Mate
type back end to plug into a
Power MIG®.

Order K489-8

Power MIG®350MP

www.lincolnelectric.com

™

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 MIG.

Order K1738-1

®

Python

-Plus Air-Cooled

Push-Pull Gun

The Python®-Plus push-pull gun
features the same great perform­ance and ergonomics as the stan­dard Python®gun but features a
Magnum®style back end for easy
connection to a Lincoln®Power
MIG®without an adapter. The
ergonomic handle design, finger­tip 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 no­tool 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. Includes 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 for 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

[7]

Power MIG®350MP

www.lincolnelectric.com

OWER MIG

P

®

50MP ORDER FORM

3

PRODUCT DESCRIPTION ORDER NUMBER QUANTITY PRICE

OWER MIG

P

OWER MIG

P

®

50MP PUSH MODEL 208/230/460/575/1/60 K2403-1

3

®

50MP PUSH-PULL ONE-PAK

3

®

ODEL K2451-2

M

RECOMMENDED GENERAL OPTIONS

ual Cylinder Mounting Kit K1702-1

D

anvas Cover K2378-1

C

ECOMMENDED STICK OPTIONS

R

ccessory Kit:

A

150 amps K875
400 amps K704

emote Output Control:

R

5 ft. (7.6 m) K857

2
100 ft. (15.2 m) K857-1

ECOMMENDED TIG OPTIONS

R

Pro-Torch™TIG Torches See publication E12.150
Part Kits:

For PTA-17 KP508
For PTA-26 KP509

oot Amptrol

F

and Amptrol

H

®

®

870

K

963-3

K
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 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 concer ning 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.

C U S T O M E R A S S I S T A N C E P O L I C Y

TH E LI N C O LN E L E CT R I C C O M PA NY

®

22801 St. Clair Ave., Cleveland, OH 44117-1199 • 216.481.8100 • www.lincolnelectric.com