Tweco 550i User Manual
350i
TRANSMIG
450i
550i
MULTI PROCESS
WELDING INVERTER
Operating Manual
Revision: AE Issue Date: May 7, 2013 Manual No.: 0-5205
Operating Features:
A-10625
WE APPRECIATE YOUR BUSINESS!
Congratulations on your new Cigweld product. We are proud to
have you as our customer and will strive to provide you with the
best service and reliability in the industry. This product is backed
by our extensive warranty and world-wide service network. To
locate your nearest distributor or accredited service provider call
+1300 654 674, or visit us on the web at www.cigweld.com.au
This Operating Manual has been designed to instruct you on the
correct use and operation of your CIGWELD product. Your satisfaction
with this product and its safe operation is our ultimate concern.
Therefore please take the time to read the entire manual, especially
the Safety Precautions. They will help you to avoid potential hazards
that may exist when working with this product.
YOU ARE IN GOOD COMPANY!
The Brand of Choice for Contractors and Fabricators Worldwide.
CIGWELD is the Market Leading Brand of Arc Welding Products for
Victor Technologies. We are a mainline supplier to major welding
industry sectors in the Asia Pacific and emerging global markets
including; Manufacturing, Construction, Mining, Automotive,
Engineering, Rural and DIY.
We distinguish ourselves from our competition through marketleading, dependable products that have stood the test of time. We
pride ourselves on technical innovation, competitive prices, excellent
delivery, superior customer service and technical support, together
with excellence in sales and marketing expertise.
Above all, we are committed to develop technologically advanced
products to achieve a safer working environment for industry
operators.
!
WARNINGS
Read and understand this entire Manual and your employer’s safety practices before installing,
operating, or servicing the equipment.
While the information contained in this Manual represents the Manufacturer’s best judgement,
the Manufacturer assumes no liability for its use.
Welding Power Supply
Operating Manual Number 0-5205 for:
TRANSMIG 350i Plant Part Number W1005350
TRANSMIG 350i Power Source (packed) Part Number W1005352
TRANSMIG 450i Plant with 4RT wirefeeder Part Number W1005450
TRANSMIG 450i Pro Plant with VAF4 wirefeeder Part Number W1005451
TRANSMIG 450i Power Source (packed) Part Number W1005452
TRANSMIG 550i Plant Part Number W1005550
TRANSMIG 550i Power Source (packed) Part Number W1005552
Published by:
CIGWELD Pty Ltd
71 Gower Street
Preston, Victoria, Australia, 3072
www.cigweld.com.au
Copyright 2011, 2012, 2013 by
CIGWELD
All rights reserved.
A Reproduction of this work, in whole or in part, without written permission of the
publisher is prohibited.
The publisher does not assume and hereby disclaims any liability to any party for any
loss or damage caused by any error or omission in this Manual, whether such error
results from negligence, accident, or any other cause.
Publication Date: November 21, 2011
Revision AE Date: May 7, 2013
Record the following information for Warranty purposes:
Where Purchased: ____________________________________
Purchase Date: ____________________________________
Equipment Serial #: ____________________________________
TABLE OF CONTENTS
SECTION 1:
ARC WELDING SAFETY INSTRUCTIONS AND WARNINGS ..................................... 1-1
1.01 Arc Welding Hazards ....................................................................................... 1-1
1.02 Principal Safety Standards .............................................................................. 1-5
1.03 Declaration of Conformity ............................................................................... 1-6
SECTION 2:
INTRODUCTION ..................................................................................... 2-1
2.01 How To Use This Manual ................................................................................ 2-1
2.02 Equipment Identification ................................................................................. 2-1
2.03 Receipt Of Equipment ..................................................................................... 2-1
2.04 Symbol Chart .................................................................................................. 2-2
2.05 Description ..................................................................................................... 2-3
2.06 User Responsibility ......................................................................................... 2-3
2.07 Transporting Methods ..................................................................................... 2-3
2.08 Packaged Items .............................................................................................. 2-4
2.09 Duty Cycle ....................................................................................................... 2-5
2.10 Specifications ................................................................................................. 2-6
2.11 Gouging Specifications (Transmig 550i only) ................................................. 2-7
2.12 Optional Accessories ...................................................................................... 2-8
SECTION 3:
INSTALLATION, OPERATION AND SETUP ........................................................ 3-1
3.01 Environment ................................................................................................... 3-1
3.02 Location .......................................................................................................... 3-1
3.03 Ventilation ....................................................................................................... 3-1
3.04 Mains Supply Voltage Requirements .............................................................. 3-1
3.05 Electromagnetic Compatibility ........................................................................ 3-1
3.06 Transmig 350i, 450i, 550i Power Source Controls, Indicators and Features .. 3-3
3.07 Shielding Gas Regulator Operating Instructions ........................................... 3-15
3.08 Setup for MIG (GMAW) Welding with Gas Shielded Mig Wire ...................... 3-17
3.09 Setup for MIG (GMAW) Welding with Gasless Mig Wire .............................. 3-20
3.10 Setup for TIG (GTAW) Welding With Gas Shielding ...................................... 3-22
3.11 Setup for STICK (MMAW) Welding ............................................................. 3-23
3.12 Setup for GOUGING (Transmig 550i only) .................................................... 3-24
SECTION 4:
BASIC WELDING GUIDE ............................................................................ 4-1
4.01 MIG (GMAW/FCAW) Basic Welding Technique ............................................... 4-1
4.02 MIG (GMAW/FCAW) Welding Troubleshooting ............................................... 4-7
4.03 Stick (MMAW) Basic Welding Technique ...................................................... 4-10
4.04 Stick (MMAW) Welding Troubleshooting ...................................................... 4-21
4.05 TIG (GTAW) Basic Welding Technique .......................................................... 4-23
4.06 TIG (GTAW) Welding Problems ..................................................................... 4-25
TABLE OF CONTENTS
SECTION 5:
POWER SOURCE PROBLEMS AND ROUTINE SERVICE REQUIREMENTS .................... 5-1
5.01 Power Source / Wirefeeder Problems ............................................................. 5-1
5.02 Routine Service and Calibration Requirements ............................................... 5-2
5.03 Cleaning the Welding Power Source ............................................................... 5-4
5.04 Cleaning the Feed Rolls ................................................................................... 5-4
SECTION 6:
KEY SPARE PARTS ................................................................................... 6-1
6.01 Power Source ................................................................................................. 6-1
SECTION 7:
VOLT/AMPERE CURVES ............................................................................. 7-1
7.01 Volt/Amp Curves ............................................................................................. 7-1
SECTION 8: CIRCUIT DIAGRAM .......................................................................... 8-1
8.01 Circuit Diagram ..................................................................................................... 8-1
CIGWELD - LIMITED WARRANTY TERMS
TERMS OF WARRANTY – JULY 2011
WARRANTY SCHEDULE – JULY 2011
GLOBAL CUSTOMER SERVICE CONTACT INFORMATION
TRANSMIG 350i, 450i, 550i
!
SECTION 1:
ARC WELDING SAFETY INSTRUCTIONS AND WARNINGS
WARNING
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN
AWAY. PACEMAKER WEARERS KEEP AWAY UNTIL CONSULTING YOUR DOCTOR. DO NOT LOSE THESE
INSTRUCTIONS. READ OPERATING/INSTRUCTION MANUAL BEFORE INSTALLING, OPERATING OR
SERVICING THIS EQUIPMENT.
Welding products and welding processes can cause serious injury or death, or damage to other equipment or
property, if the operator does not strictly observe all safety rules and take precautionary actions.
Safe practices have developed from past experience in the use of welding and cutting. These practices must be
learned through study and training before using this equipment. Some of these practices apply to equipment
connected to power lines; other practices apply to engine driven equipment. Anyone not having extensive
training in welding and cutting practices should not attempt to weld.
Safe practices are outlined in the Australian Standard AS1674.2-2007 entitled: Safety in welding and allied
processes Part 2: Electrical. This publication and other guides to what you should learn before operating
this equipment are listed at the end of these safety precautions. HAVE ALL INSTALLATION, OPERATION,
MAINTENANCE, AND REPAIR WORK PERFORMED ONLY BY QUALIFIED PEOPLE.
1.01 ARC WELDING HAZARDS
WARNING
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause
fatal shocks or severe burns. The electrode
and work circuit is electrically live whenever the output is on. The input power circuit and machine internal circuits are also
live when power is on. In semiautomatic
or automatic wire welding, the wire, wire
reel, drive roll housing, and all metal parts
touching the welding wire are electrically
live. Incorrectly installed or improperly
grounded equipment is a hazard.
1. Do not touch live electrical parts.
2. Wear dry, hole-free insulating gloves and body
protection.
3. Insulate yourself from work and ground using dry
insulating mats or covers.
4. Disconnect input power or stop engine before
installing or servicing this equipment. Lock input
power disconnect switch open, or remove line
fuses so power cannot be turned on accidentally.
5. Properly install and ground this equipment according to its Owner’s Manual and national, state, and
local codes.
6. Turn off all equipment when not in use. Disconnect
power to equipment if it will be left unattended or
out of service.
7. Use fully insulated electrode holders. Never dip
holder in water to cool it or lay it down on the
ground or the work surface. Do not touch holders
connected to two welding machines at the same
time or touch other people with the holder or
electrode.
8. Do not use worn, damaged, undersized, or poorly
spliced cables.
9. Do not wrap cables around your body.
10. Ground the workpiece to a good electrical (earth)
ground.
11. Do not touch electrode while in contact with the
work (ground) circuit.
12. Use only well-maintained equipment. Repair or
replace damaged parts at once.
13. In confined spaces or damp locations, do not use a
welder with AC output unless it is equipped with a
voltage reducer. Use equipment with DC output.
14. Wear a safety harness to prevent falling if working
above floor level.
15. Keep all panels and covers securely in place.
Manual 0-5205 1-1 GENERAL INFORMATION
TRANSMIG 350i, 450i, 550i
2. Wear approved safety glasses. Side shields recommended.
WARNING
ARC RAYS can burn eyes and skin; NOISE
can damage hearing.
Arc rays from the welding process produce
intense heat and strong ultraviolet rays
that can burn eyes and skin. Noise from
some processes can damage hearing.
1. Use a Welding Helmet or Welding Faceshield fitted
with a proper shade of filter (see ANSI Z49.1 and
AS 1674 listed in Safety Standards) to protect your
face and eyes when welding or watching.
Recommended Protective Filters for Electric Welding
Description of Process
Manual Metal Arc Welding - covered
electrodes (MMAW)
Gas Metal Arc Welding (GMAW)
(MIG) other than Aluminium and
Stainless Steel
Gas Metal Arc Welding (GMAW)
(MIG) Aluminium and Stainless Steel
Gas Tungsten Arc Welding (GTAW)
(TIG)
Flux-cored Arc Welding (FCAW) -with
or without shielding gas.
Air - Arc Gouging Less than or equal to 400 12
Plasma - Arc Cutting
Plasma - Arc Spraying
Plasma - Arc Welding
Submerged - Arc Welding
Resistance Welding
Approximate Range of
Welding Current in Amps
Less than or equal to 100 8
Greater than 400 13
Less than or equal to 150 10
Greater than 400 14
Less than or equal to 250 12
Less than or equal to 100 10
Greater than 350 14
Less than or equal to 300 11
Greater than 500 14
Less than or equal to 20 8
3. Use protective screens or barriers to protect others
from flash and glare; warn others not to watch the
arc.
4. Wear protective clothing made from durable,
flame-resistant material (wool and leather) and
foot protection.
5. Use approved ear plugs or ear muffs if noise level
is high.
6. Never wear contact lenses while welding.
Minimum Shade Number of
Filter(s)
100 to 200 10
200 to 300 11
300 to 400 12
150 to 250 11
250 to 300 12
300 to 400 13
250 to 350 13
100 to 200 11
200 to 250 12
250 to 350 13
300 to 400 12
400 to 500 13
50 to 100 10
100 to 400 12
400 to 800 14
—
20 to 100 10
100 to 400 12
400 to 800 14
—
—
Safety Spectacles or eye
15
2(5)
shield
Refer to standard AS/NZS 1338.1:1992 for comprehensive information regarding the above table.
GENERAL INFORMATION 1-2 Manual 0-5205
WARNING
FUMES AND GASES can be hazardous to
your health.
Welding produces fumes and gases.
Breathing these fumes and gases can be
hazardous to your health.
1. Keep your head out of the fumes. Do not breath
the fumes.
2. If inside, ventilate the area and/or use exhaust at
the arc to remove welding fumes and gases.
3. If ventilation is poor, use an approved air-supplied
respirator.
4. Read the Material Safety Data Sheets (MSDSs)
and the manufacturer’s instruction for metals,
consumables, coatings, and cleaners.
5. Work in a confined space only if it is well ventilated, or while wearing an air-supplied respirator.
Shielding gases used for welding can displace air
causing injury or death. Be sure the breathing air
is safe.
6. Do not weld in locations near degreasing, cleaning,
or spraying operations. The heat and rays of the
arc can react with vapours to form highly toxic
and irritating gases.
TRANSMIG 350i, 450i, 550i
3. Remove all flammables within 35 ft (10.7 m) of the
welding arc. If this is not possible, tightly cover
them with approved covers.
4. Be alert that welding sparks and hot materials from
welding can easily go through small cracks and
openings to adjacent areas.
5. Watch for fire, and keep a fire extinguisher
nearby.
6. Be aware that welding on a ceiling, floor, bulkhead,
or partition can cause fire on the hidden side.
7. Do not weld on closed containers such as tanks
or drums.
8. Connect work cable to the work as close to the
welding area as practical to prevent welding current from travelling long, possibly unknown paths
and causing electric shock and fire hazards.
9. Do not use welder to thaw frozen pipes.
10. Remove stick electrode from holder or cut off
welding wire at contact tip when not in use.
WARNING
FLYING SPARKS AND HOT METAL can
cause injury.
Chipping and grinding cause flying metal.
As welds cool, they can throw off slag.
7. Do not weld on coated metals, such as galvanized,
lead, or cadmium plated steel, unless the coating
is removed from the weld area, the area is well
ventilated, and if necessary, while wearing an airsupplied respirator. The coatings and any metals
containing these elements can give off toxic fumes
if welded.
WARNING
WELDING can cause fire or explosion.
Sparks and spatter fly off from the welding
arc. The flying sparks and hot metal, weld
spatter, hot workpiece, and hot equipment
can cause fires and burns. Accidental con
tact of electrode or welding wire to metal
objects can cause sparks, overheating,
or fire.
1. Protect yourself and others from flying sparks and
hot metal.
1. Wear approved face shield or safety goggles. Side
shields recommended.
2. Wear proper body protection to protect skin.
WARNING
CYLINDERS can explode if damaged.
Shielding gas cylinders contain gas under
high pressure. If damaged, a cylinder can
explode. Since gas cylinders are normally
part of the welding process, be sure to
treat them carefully.
1. Protect compressed gas cylinders from excessive
heat, mechanical shocks, and arcs.
2. Install and secure cylinders in an upright position
by chaining them to a stationary support or equipment cylinder rack to prevent falling or tipping.
3. Keep cylinders away from any welding or other
electrical circuits.
2. Do not weld where flying sparks can strike flammable material.
Manual 0-5205 1-3 GENERAL INFORMATION
4. Never allow a welding electrode to touch any
cylinder.
TRANSMIG 350i, 450i, 550i
!
5. Use only correct shielding gas cylinders,
regulators, hoses, and fittings designed for the
specific application; maintain them and associated
parts in good condition.
6. Turn face away from valve outlet when opening
cylinder valve.
7. Keep protective cap in place over valve except
when cylinder is in use or connected for use.
8. Read and follow instructions on compressed
gas cylinders, associated equipment, and CGA
publication P-1 listed in Safety Standards.
WARNING
MOVING PARTS can cause injury.
Moving parts, such as fans, rotors, and belts can cut
fingers and hands and catch loose clothing.
1. Keep all doors, panels, covers, and guards closed
and securely in place.
2. Stop engine before installing or connecting unit.
a very large volume of scientific findings based on
experiments at the cellular level and from studies
with animals and people which clearly establish that
low frequency magnetic fields and interact with, and
produce changes in, biological systems. While most
of this work is of very high quality, the results are
complex. Current scientific understanding does not
yet allow us to interpret the evidence in a single coherent framework. Even more frustrating, it does not yet
allow us to draw definite conclusions about questions
of possible risk or to offer clear science-based advice
on strategies to minimize or avoid potential risks.”
To reduce magnetic fields in the workplace, use the
following procedures.
1. Keep cables close together by twisting or taping
them.
2. Arrange cables to one side and away from the
operator.
3. Do not coil or drape cable around the body.
4. Keep welding power source and cables as far away
from body as practical.
3. Have only qualified people remove guards or
covers for maintenance and troubleshooting as
necessary.
4. To prevent accidental starting during servicing,
disconnect negative (-) battery cable from battery.
5. Keep hands, hair, loose clothing, and tools away
from moving parts.
6. Reinstall panels or guards and close doors when
servicing is finished and before starting engine.
WARNING
This product, when used for welding or
cutting, produces fumes or gases which
contain chemicals know to the State of
California to cause birth defects and, in
some cases, cancer. (California Health &
Safety code Sec. 25249.5 et seq.)
NOTE
ABOUT PACEMAKERS:
The above procedures are among those
also normally recommended for pacemaker wearers. Consult your doctor for
complete information.
Considerations About Welding And The
Effects of Low Frequency Electric and
Magnetic Fields
The following is a quotation from the General Conclusions Section of the U.S. Congress, Office of
Technology Assessment, Biological Effects of Power
Frequency Electric & Magnetic Fields - Background
Paper, OTA-BP-E-63 (Washington, DC: U.S. Government Printing Office, May 1989): “...there is now
GENERAL INFORMATION 1-4 Manual 0-5205
TRANSMIG 350i, 450i, 550i
1.02 PRINCIPAL SAFETY STANDARDS
Safety in Welding and Cutting, ANSI Standard Z49.1, from American Welding Society, 550 N.W. LeJeune Rd.,
Miami, FL 33126.
Safety and Health Standards, OSHA 29 CFR 1910, from Superintendent of Documents, U.S. Government
Printing Office, Washington, D.C. 20402.
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers That Have Held
Hazardous Substances, American Welding Society Standard AWS F4.1, from American Welding Society, 550
N.W. LeJeune Rd., Miami, FL 33126.
National Electrical Code, NFPA Standard 70, from National Fire Protection Association, Batterymarch Park,
Quincy, MA 02269.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association,
1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202.
Code for Safety in Welding and Cutting, CSA Standard W117.2, from Canadian Standards Association, Standards Sales, 178 Rexdale Boulevard, Rexdale, Ontario, Canada M9W 1R3.
Safe Practices for Occupation and Educational Eye and Face Protection, ANSI Standard Z87.1, from American
National Standards Institute, 1430 Broadway, New York, NY 10018.
Cutting and Welding Processes, NFPA Standard 51B, from National Fire Protection Association, Batterymarch
Park, Quincy, MA 02269.
Safety in welding and allied processes Part 1: Fire Precautions, AS 1674.1-1997 from SAI Global Limited,
www.saiglobal.com.
Safety in welding and allied processes Part 2: Electrical, AS 1674.2-2007 from SAI Global Limited, www.
saiglobal.com.
Filters for eye protectors - Filters for protection against radiation generated in welding and allied operations
AS/NZS 1338.1:1992 from SAI Global Limited, www.saiglobal.com.
Manual 0-5205 1-5 GENERAL INFORMATION
TRANSMIG 350i, 450i, 550i
1.03 DECLARATION OF CONFORMITY
Manufacturer and Merchandiser of Quality Consumables and Equipment : CIGWELD
Address: 71 Gower St, Preston
Victoria 3072
Australia
Description of equipment: Welding Equipment: TRANSMIG 350i, 450i, 550i MULTI PROCESS INVERTER Power
Source and associated accessories.
* Serial numbers are unique with each individual piece of equipment and details description, parts used to
manufacture a unit and date of manufacture.
* The equipment conforms to all applicable aspects and regulations of the ‘Low Voltage Directive’ (Directive
73/23/EU, as recently changed in Directive 93/68/EU and to the National legislation for the enforcement of the
Directive.
National Standard and Technical Specifications
The product is designed and manufactured to a number of standards and technical requirements among them
are:
* AS 60974.10/IEC 60974-10 EMC Directive applicable to arc welding equipment - generic emissions and
regulations.
* AS 60974.1/IEC 60974-1 applicable to welding equipment and associated accessories.
* AS 1674 Safety in welding and allied processes
* Extensive product design verification is conducted at the manufacturing facility as part of the routine design and manufacturing process, to ensure the product is safe and performs as specified. Rigorous testing is
incorporated into the manufacturing process to ensure the manufactured product meets or exceeds all design
specifications.
CIGWELD has been manufacturing and merchandising an extensive equipment range with superior performance,
ultra safe operation and world class quality for more than 30 years and will continue to achieve excellence.
GENERAL INFORMATION 1-6 Manual 0-5205
SECTION 2:
!
INTRODUCTION
TRANSMIG 350i, 450i, 550i
2.01 How To Use This Manual
To ensure safe operation, read the entire manual,
including the chapter on safety instructions and
warnings.
Throughout this manual, the words WARNING,
CAUTION, and NOTE may appear. Pay particular attention to the information provided under these headings. These special annotations are easily recognized
as follows:
WARNING
A WARNING gives information regarding
possible personal injury.
CAUTION
A CAUTION refers to possible equipment
damage.
NOTE
A NOTE offers helpful information con
cerning certain operating procedures.
Additional copies of this manual may be purchased by
contacting Cigweld at the address and phone number
for your location listed in the inside back cover of this
manual. Include the Owner’s Manual number and
equipment identification numbers.
-
2.02 Equipment Identification
The unit’s identification number (specification or
part number), model, and serial number usually appear on a nameplate attached to the control panel. In
some cases, the nameplate may be attached to the
rear panel. Equipment which does not have a control
panel such as gun and cable assemblies is identified
only by the specification or part number printed on
the shipping container. Record these numbers on the
bottom of page i for future reference.
2.03 Receipt Of Equipment
When you receive the equipment, check it against the
invoice to make sure it is complete and inspect the
equipment for possible damage due to shipping. If
there is any damage, notify the carrier immediately to
file a claim. Furnish complete information concerning
damage claims or shipping errors to the location in
your area listed in the inside back cover of this manual.
Include all equipment identification numbers as
described above along with a full description of the
parts in error.
Move the equipment to the installation site before
un-crating the unit. Use care to avoid damaging the
equipment when using bars, hammers, etc., to uncrate the unit.
Manual 0-5205 2-1 INTRODUCTION
TRANSMIG 350i, 450i, 550i
Gas Tungsten Arc
Welding (GTAW)
Air Carbon Arc
Cutting (CAC-A)
Constant Current
Constant Voltage
Or Constant Potential
High Te mperature
Fault Indication
Arc Force
Touch Start (GTAW)
Variable Inductance
Voltage Input
Single Phase
Three Phase
Three Phase Static
Frequency ConverterTransformer-Rectifier
Dangerous Voltage
Off
On
Panel/Local
Shielded Metal
Arc Welding (SMAW)
Gas Metal Arc
Welding (GMAW)
Increase/Decrease
Circuit Breaker
AC Auxiliary Power
Remote
Duty Cycle
Percentage
Amperage
Voltage
Hertz (cycles/sec)
Frequency
Negative
Positive
Direct Current (DC)
Protective Earth
(Ground)
Line
Line Connection
Auxiliary Power
Receptacle RatingAuxiliary Power
Art # A-04937
115V 15A
t
t1
t2
%
X
IPM
MPM
t
V
Fuse
Wire Feed Function
Wire Feed Towards
Workpiece With
Output Voltage Off.
Preflow Time
Postflow Time
Spot Time
Spot Weld Mode
Continuous Weld
Mode
Press to initiate wirefeed and
welding, release to stop.
Purging Of Gas
Inches Per Minute
Meters Per Minute
Disturbance In
Ground System
Welding Gun
Burnback Time
Press and hold for preflow, release
to start arc. Press to stop arc, and
hold for preflow.
4 Step Trigger
Operation
2 Step Trigger
Operation
2.04 Symbol Chart
Note that only some of these symbols will appear on your model.
INTRODUCTION 2-2 Manual 0-5205
TRANSMIG 350i, 450i, 550i
!
2.05 Description
The Cigweld Transmig 350i, 450i and 550i are three
phase multi process welding inverters that are capable
of performing GMAW/FCAW (MIG), MMAW (Stick)
and GTAW (Lift TIG) welding processes. The unit is
equipped with an integrated voltage reduction device
(VRD applicable in stick mode only), digital voltage
and amperage meters, and a host of other features
in order to fully satisfy the broad operating needs of
the modern welding professional. The unit is also
fully compliant to Australian Standard AS 60974.1
and IEC 60974.1.
The Transmig 350i, 450i and 550i provide excellent
welding performance across a broad range of applications when used with the correct welding consumables and procedures. The following instructions
detail how to correctly and safely set up the machine
and give guidelines on gaining the best efficiency and
quality from the Power Source. Please read these
instructions thoroughly before using the unit.
2.06 User Responsibility
2.07 Transporting Methods
This unit is equipped with a handle for carrying
purposes.
WARNING
ELECTRIC SHOCK can kill. DO NOT TOUCH
live electrical parts. Disconnect input
power conductors from de-energized
supply line before moving the welding
power source.
WARNING
FALLING EQUIPMENT can cause serious
personal injury and equipment damage.
Lift unit with handle or lifting lug on top of case.
Use handcart or similar device of adequate capacity.
If using a fork lift vehicle, place and secure unit on a
proper skid before transporting.
This equipment will perform as per the information
contained herein when installed, operated, maintained
and repaired in accordance with the instructions provided. This equipment must be checked periodically.
Defective equipment (including welding leads) should
not be used. Parts that are broken, missing, plainly
worn, distorted or contaminated, should be replaced
immediately. Should such repairs or replacements
become necessary, it is recommended that such repairs be carried out by appropriately qualified persons
approved by CIGWELD. Advice in this regard can
be obtained by contacting an Accredited CIGWELD
Distributor.
This equipment or any of its parts should not be altered from standard specification without prior written
approval of CIGWELD. The user of this equipment
shall have the sole responsibility for any malfunction
which results from improper use or unauthorized
modification from standard specification, faulty
maintenance, damage or improper repair by anyone
other than appropriately qualified persons approved
by CIGWELD.
Manual 0-5205 2-3 INTRODUCTION
TRANSMIG 350i, 450i, 550i
2.08 Packaged Items
Transmig 350i Plant (Part No. W1005350)
• Transmig 350i Inverter Power Source
• Transmig 4RT wirefeeder with 8m interconnec-
tion lead fitted
• Tweco Professional No.4 Mig Torch
• Comet Professional Argon regulator/owmeter
• Feed roll: 0.9/1.2mm V groove (tted)
• Electrode holder with 5m lead
• Work clamp with 5m lead
•Trolley
• Operating Manual
Transmig 350i Power Source (Part No. W1005352)
• Transmig 350i inverter Power Source
• Operating Manual
Transmig 550i Plant (Part No. W1005550)
• Transmig 550i Inverter Power Source
• Transmig VA4000 wirefeeder with 15m intercon-
nection lead
• Tweco Professional Supra XT Mig Torch
• Comet Professional Argon regulator/owmeter
• Feed roll: 1.3/1.6mm V groove (tted)
• Electrode holder with 8m lead
• Work clamp with 8m lead
•Trolley
• Operating Manual
Transmig 550i Power Source (Part No. W1005552)
• Transmig 550i inverter Power Source
• Operating Manual
Transmig 450i Plant (Part No. W1005450)
• Transmig 450i Inverter Power Source
• Transmig 4RT wirefeeder with 8m interconnec-
tion lead fitted
• Tweco Professional Supra XT Mig Torch
• Comet Professional Argon regulator/owmeter
• Feed roll: 0.9/1.2mm V groove (tted)
• Electrode holder with 8m lead
• Work clamp with 8m lead
•Trolley
• Operating Manual
Transmig 450i Pro Plant (Part No. W1005451)
• Transmig 450i Inverter Power Source
• Transmig VAF-4 wirefeeder with 8m interconnec-
tion lead fitted
• Tweco Professional Supra XT Mig Torch
• Comet Professional Argon regulator/owmeter
• Feed roll: 0.9/1.2mm V groove (tted)
• Electrode holder with 8m lead
• Work clamp with 8m lead
•Trolley
• Operating Manual
Transmig 450i Power Source (Part No. W1005452)
• Transmig 450i inverter Power Source
• Operating Manual
INTRODUCTION 2-4 Manual 0-5205
TRANSMIG 350i, 450i, 550i
Duty Cycle (PERCENTAGE)
2.09 Duty Cycle
The rated duty cycle of a Welding Power Source, is a statement of the time it may be operated at its rated
welding current output without exceeding the temperature limits of the insulation of the component parts. To
explain the 10 minute duty cycle period the following example is used. Suppose a Welding Power Source is
designed to operate at a 60% duty cycle, 550 amperes at 41.5 volts. This means that it has been designed
and built to provide the rated amperage (550A) for 6 minutes, i.e. arc welding time, out of every 10 minute
period (60% of 10 minutes is 6minutes). During the other 4minutes of the 10 minute period the Welding
Power Source must idle and allowed to cool. The thermal cut out will operate if the duty cycle is exceeded.
100
90
80
70
60
50
40
TRANSMIG
350i
TRANSMIG
450i
TRANSMIG
550i
30
20
10
SAFE OPERATING REGION
(MIG, STICK & TIG )
0
25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 525 550
0
Welding Current (AMPS)
Figure 2-1: Transmig 350i, 450i, 550i Duty Cycle
A-10626
Manual 0-5205 2-5 INTRODUCTION
TRANSMIG 350i, 450i, 550i
2.10 Specifications
Description TRANSMIG 350i TRANSMIG 450i TRANSMIG 550i
Plant Part Number W1005350
Power Source (Packed)Part Number W1005352 W1005452 W1005552
Power Source Mass 72 kg 72 kg 72 kg
Power Source Dimensions H 580mm x W 350mm x D 640mm
Cooling Fan Cooled
Welder Type Multi Process Inverter Power Source
Applicable Standards AS 60974.1-2006 / IEC 60974-1
Number of Phases 3
Nominal Supply Voltage 415V +/- 15%
Nominal Supply Frequency 50/60Hz
W1005450
W1005451
W1005550
Welding Current Range
(MIG Mode)
Effective Input Current (I 1eff)
(note1)
Maximum Input Current (I1max) 25A 35A 47A
Three Phase Generator Requirement
(note 3)
MIG (GMAW)
Welding Output, 40ºC, 10 min.
STICK (MMAW)
Welding Output, 40ºC, 10 min.
TIG (GTAW)
Welding Output, 40ºC, 10 min.
Gouging (CAG)
Welding Output, 40ºC, 3 min.
Note: Gouging is specified over a 3
minute duty cycle period only.
40 – 350A 40 – 450A 40 – 550A
18A 25A 32A
18kVA 25kVA 35kVA
350A @ 60%, 31.5V
270A @ 100%, 27.5V
350A @ 60%, 34.0V
270A @ 100%, 30.8V
350A @ 60%, 24.0V
270A @ 100%, 20.8V
Not Available Not Available
450A @ 60%, 36.5V
350A @ 100%, 31.5V
450A @ 60%, 38.0V
350A @ 100%, 34.0V
450A @ 60%, 28.0V
350A @ 100%, 24.0V
550A @ 60%, 41.5V
420A @ 100%, 35.0V
550A @ 60%, 42.0V
420A @ 100%, 36.8V
550A @ 60%, 32.0V
420A @ 100%, 26.8V
6.5mm Carbon
400A@63%
8.0mm Carbon
450A@54%
9.5mm Carbon
550A@35%
Open circuit voltage (VRD inactive) 84V 84V 84V
Protection Class IP23S IP23S IP23S
Table 2-1: Power Source Specification
Note 1: The Effective Input Current should be used for the determination of cable size & supply requirements.
Note 2: Motor start fuses or thermal circuit breakers are recommended for this application. Check local requirements for your situation in this regard.
Note 3: Generator Requirements at the Maximum Output Duty Cycle.
INTRODUCTION 2-6 Manual 0-5205
TRANSMIG 350i, 450i, 550i
NOTE
Due to variations that can occur in manufactured products, claimed performance, voltages, ratings,
all capacities, measurements, dimensions and weights quoted are approximate only. Achievable
capacities and ratings in use and operation will depend upon correct installation, use, applications,
maintenance and service. In the interest of continuous improvement, CIGWELD Pty, Ltd reserves
the right to change the specifications or design of any of its products without prior notice.
2.11 Gouging Specifications (Transmig 550i only)
Gouging is a process where a copper coated carbon electrode is used to rapidly remove material from the
workpiece.
The arc voltage is much higher during Gouging, than in Stick, or Mig welding. This means, that for the same
output current, we have much higher arc volts during Gouging, and therefore much higher output power. It
is because of this extra output power, that we need to rate the power source differently for gouging, than we
do for welding.
Also as we are drawing a much higher output power from the power source during Gouging, in order to keep
the power source's internal temperatures within acceptable limits, the Duty Cycle for Gouging is specified
over a 3 minute duty cycle period, instead of the normal 10 minute duty cycle period specified for the welding processes.
Refer to Section 3.12 for how to set up for gouging.
Carbon electrodes have a range of specified operating current. Here are the normal sizes that would be in use
with a power source of this size, and the power source capability when used with these carbon electrode sizes
Electrode Size Amps Duty Cycle
6.5mm 300A 90%
400A 63%
8.0mm 350A 70%
450A 54%
9.5mm 450A 50%
550A 35%
Table 2-2: Electrode Size
Figure 2-2: Gouging Current (AMPS)
Manual 0-5205 2-7 INTRODUCTION
TRANSMIG 350i, 450i, 550i
As an example, if we were Gouging with an 8mm electrode at 400A, we can see from the graph that we
can expect 400A at 57% duty cycle. For a 3 minute duty cycle period, this means our arc time is 57% of 3
minutes, which is 1 minute & 40 seconds, during the other 1 minute & 20 seconds the machine must be
allowed to cool.
NOTE
Gouging is specified for a 3 minute duty cycle period only.
2.12 Optional Accessories
Part Number Description
717201 TWECO #4 Mig Torch, 3.6 metre Tweco connection
717335 TWECO #4 Mig Torch, 4.5 metre Tweco connection
SE4004M16 TWECO Supra XT Mig Torch (4.0M) Tweco connection
717211 TWECO #5 torch, 3.6 metre Tweco connection
717212 TWECO #5 torch, 4.5 metre Tweco connection
W4015500 Heavy Duty Transmig Trolley with inbuilt cylinder carrier
W4015600 Heavy Duty Transmig Roll Cage
W4014602 Tig Torch 26V, Flex neck, 4m lead, gas valve, 3m gas hose, 10 pin
connector and accessory kit.
706954 TRANSMIG VA4000 wirefeeder, 19 pin, 110VAC
706965 TRANSMIG VAF-4 wirefeeder, 19 pin, 110VAC
WSPLIER MIG Pliers
646265 Weld measurement gauge
W7005358 10 Pin Control Plug
7977877 19 Pin Control Plug
Table 2-3: Optional Accessories
INTRODUCTION 2-8 Manual 0-5205
TRANSMIG 350i, 450i, 550i
!
SECTION 3:
INSTALLATION, OPERATION AND SETUP
3.01 Environment
These units are designed for use in environments
with increased hazard of electric shock as outlined in
AS 60974.1 and AS 1674.2.
A. Examples of environments with increased hazard
of electric shock are:
1. In locations in which freedom of movement
is restricted, so that the operator is forced
to perform the work in a cramped (kneeling,
sitting or lying) position with physical contact
with conductive parts;
2. In locations which are fully or partially limited
by conductive elements, and in which there
is a high risk of unavoidable or accidental
contact by the operator, or
3. In wet or damp hot locations where humidity
or perspiration considerable reduces the skin
resistance of the human body and the insulation properties of accessories
conditions. For further information please refer
to AS 60529.
H. Precautions must be taken against the power
source toppling over. The power source must
be located on a suitable horizontal surface in the
upright position when in use.
3.03 Ventilation
Since the inhalation of welding fumes can be harmful,
ensure that the welding area is effectively ventilated.
3.04 Mains Supply Voltage Requirements
The Mains supply voltage should be within ± 15%
of the rated mains supply voltage. Too low a voltage
may cause poor welding performance. Too high a
supply voltage will cause components to overheat
and possibly fail.
The Welding Power Source must be:
B. Environments with increased hazard of electric
shock do not include places where electrically
conductive parts in the near vicinity of the operator, which can cause increased hazard, have been
insulated.
3.02 Location
Be sure to locate the welder according to the following guidelines:
A. In areas, free from moisture and dust.
B. Ambient temperature between 0° C to 40° C.
C. In areas, free from oil, steam and corrosive gases.
D. In areas, not subjected to abnormal vibration or
shock.
E. In areas, not exposed to direct sunlight or rain.
F. Place at a distance of 300mm or more from walls
or similar that could restrict natural air flow for
cooling.
• Correctly installed, if necessary, by a qualied
electrician.
• Correctly earthed (electrically) in accordance
with local regulations.
• Connected to the correct size power point and
fuse as per the Specifications on page 2-5.
!
WARNING
Any electrical work must be carried out by
a qualified Electrical Tradesperson.
3.05 Electromagnetic Compatibility
WARNING
Extra precautions for Electromagnetic
Compatibility may be required when this
Welding Power Source is used in a domestic situation.
G. The enclosure design of this power source meets
the requirements of IP23S as outlined in AS60529.
This provides adequate protection against solid
objects (greater than 12mm), and direct protection from vertical drops. Under no circumstances
should the unit be operated or connected in a
micro environment that will exceed the stated
Manual 0-5205 3-1
A. Installation and Use - Users Responsibility
The user is responsible for installing and using the
welding equipment according to the manufacturer’s instructions. If electromagnetic disturbances
are detected then it shall be the responsibility
of the user of the welding equipment to resolve
the situation with the technical assistance of the
INSTALLATION, OPERATION AND SETUP
TRANSMIG 350i, 450i, 550i
manufacturer. In some cases this remedial action
may be as simple as earthing the welding circuit,
see NOTE below. In other cases it could involve
constructing an electromagnetic screen enclosing
the Welding Power Source and the work, complete
with associated input filters. In all cases, electromagnetic disturbances shall be reduced to the
point where they are no longer troublesome.
NOTE
The welding circuit may or may nor be
earthed for safety reasons. Changing the
earthing arrangements should only be au
thorised by a person who is competent to
assess whether the changes will increase
the risk of injury, e.g. by allowing parallel
welding current return paths which may
damage the earth circuits of other equipment. Further guidance is given in IEC
60974-13 Arc Welding Equipment - Installation and use (under preparation).
B. Assessment of Area
Before installing welding equipment, the user shall
make an assessment of potential electromagnetic
problems in the surrounding area. The following
shall be taken into account
1. Other supply cables, control cables, signalling and telephone cables; above, below and
adjacent to the welding equipment.
2. Radio and television transmitters and receivers.
3. Computer and other control equipment.
4. Safety critical equipment, e.g. guarding of
industrial equipment.
C. Methods of Reducing Electromagnetic Emissions
1. Mains Supply
Welding equipment should be connected to the
mains supply according to the manufacturer’s
recommendations. If interference occurs, it
may be necessary to take additional precautions such as filtering of the mains supply.
Consideration should be given to shielding the
supply cable of permanently installed welding
equipment in metallic conduit or equivalent.
Shielding should be electrically continuous
throughout it’s length. The shielding should
be connected to the Welding Power Source
so that good electrical contact is maintained
between the conduit and the Welding Power
Source enclosure.
2. Maintenance of Welding Equipment
The welding equipment should be routinely
maintained according to the manufacturer’s
recommendations. All access and service
doors and covers should be closed and
properly fastened when the welding equipment is in operation. The welding equipment
should not be modified in any way except for
those changes and adjustments covered in
the manufacturer’s instructions. In particular,
the spark gaps of arc striking and stabilising
devices should be adjusted and maintained
according to the manufacturer’s recommendations.
3. Welding Cables
The welding cables should be kept as short
as possible and should be positioned close
together, running at or close to the floor level.
5. The health of people around, e.g. the use of
pacemakers and hearing aids.
6. Equipment used for calibration and measurement.
7. The time of day that welding or other activities
are to be carried out.
8. The immunity of other equipment in the environment: the user shall ensure that other
equipment being used in the environment
is compatible: this may require additional
protection measures.
The size of the surrounding area to be considered
will depend on the structure of the building and
other activities that are taking place. The surrounding area may extend beyond the boundaries of the
premises.
INSTALLATION, OPERATION AND SETUP
3-2 Manual 0-5205
4. Equipotential Bonding
Bonding of all metallic components in the
welding installation and adjacent to it should
be considered. However. Metallic components
bonded to the work piece will increase the
risk that the operator could receive a shock
by touching the metallic components and
the electrode at the same time. The operator
should be insulated from all such bonded
metallic components.
5. Earthing of the Workpiece
Where the workpiece is not bonded to earth
for electrical safety, nor connected to earth because of it’s size and position, e.g. ship’s hull
or building steelwork, a connection bonding
the workpiece to earth may reduce emissions
in some, but not all instances. Care should be
TRANSMIG 350i, 450i, 550i
taken to prevent the earthing of the workpiece increasing the risk of injury to users, or damage to other
electrical equipment. Where necessary, the connection of the workpiece to earth should be made by
direct connection to the workpiece, but in some countries where direct connection is not permitted,
the bonding should be achieved by suitable capacitance, selected according to national regulations.
6. Screening and Shielding
Selective screening and shielding of other cables and equipment in the surrounding area may allevi-
ate problems of interference. Screening the entire welding installation may be considered for special
applications.
3.06 Transmig 350i, 450i, 550i Power Source Controls, Indicators and Features
6
8
9
7
A-10627
1
2
3
4
5
12
11
13
14
A-10628
10
Manual 0-5205 3-3
INSTALLATION, OPERATION AND SETUP
TRANSMIG 350i, 450i, 550i
22
18
20
21
19
17
A-10629
Figure 3-1: Front Panel and Controls
1. Amperage Control (Wirespeed)
The amperage control knob adjusts the amount of welding current delivered by the power source.
In MMAW (stick) and GTAW (Lift TIG) modes, the amperage control knob directly adjusts the power inverter
to deliver the desired level of output current.
In 10 PIN GMAW/FCAW modes (MIG), the amperage knob adjusts the speed of the 10 pin remote traveller
wire feed motor (which in turn adjusts the output current by varying the amount of MIG wire delivered to
the welding arc). The optimum wire speed required will be dependent on the welding application.
In 19PIN GMAW/FCAW modes (MIG), the amperage knob is inactive as the wirefeeder speed is adjusted
using the control located on the wirefeeder only.
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
difference may be observed between preview values and actual welding values due to factors includ
ing the mode of welding, differences in consumables/gas mixtures, individual welding techniques
and the transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are
required (in the case of procedural work), it is recommended that alternate measurement methods
be utilized to ensure output values are accurate.
INSTALLATION, OPERATION AND SETUP
3-4 Manual 0-5205
-
TRANSMIG 350i, 450i, 550i
2. Voltage Control
The voltage control knob adjusts the amount of welding voltage delivered by the power source.
In MMAW (stick) and GTAW (Lift TIG) modes, the voltage control knob is inactive.
In 10 PIN and 19 PIN GMAW/FCAW modes (MIG), the voltage knob directly adjusts the power inverter to
deliver the desired level of output voltage.
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
difference may be observed between preview values and actual welding values due to factors includ
ing the mode of welding, differences in consumables/gas mixtures, individual welding techniques
and the transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are
required (in the case of procedural work), it is recommended that alternate measurement methods
be utilized to ensure output values are accurate.
3. Multifunction Control
The multifunction control knob is used to adjust three main parameters depending on the welding mode
selected.
When GMAW/FCAW (MIG) Mode is Selected
-
In this mode the control knob is used to adjust the adjust the intensity of the welding arc.
Lower arc control settings make the arc softer with less weld spatter. Higher arc control settings give a
stronger driving arc which can increase weld penetration.
When MMAW (Stick) Mode is Selected
In this mode the multifunction control knob is used to adjust arc force. Arc force control provides an
adjustable amount of welding force (or “dig”) control. This feature can be particularly beneficial in providing the operator the ability to compensate for variability in joint fit-up in certain situations with particular
electrodes. In general increasing the arc force control toward ‘10’ (maximum arc force) allows greater
penetration control to be achieved. Arc force is increased by turning the control knob clockwise or decreased by turning the knob anti-clockwise.
When GTAW (Lift Tig) Mode is Selected
In this mode the multifunction control knob is used to adjust down slope. Down slope allows the user
to select the ramp down time at the completion of the weld. The main function of down slope is to allow
the welding current to be gradually reduced over a pre-set time frame such that the welding pool is given
time to cool sufficiently.
Note that when in 2T normal mode (refer item 14), the unit will enter down slope mode as soon as the
trigger switch is released (ie if the multifunction control knob is set to 5, the unit will ramp down from
the present welding current to zero over 5 seconds). If no down slope time is selected then the welding
output will cease immediately. If the unit is set to 4T latch mode, to enter down slope mode the trigger
must be held in for the selected time period (ie press and release trigger to commence welding, then press
and hold trigger again to enter down slope mode). Should the trigger be released during the down slope
phase (4T only), the output will cease immediately.
4. Purge Button
This button will purge the shielding gas when pressed.
The PURGE button is active in 10 PIN GMAW/FCAW (Mig) mode only.
Press and hold the PURGE button to purge the gas line in the Wirefeeder (Active in 10 Pin mode only).
Manual 0-5205 3-5
INSTALLATION, OPERATION AND SETUP
TRANSMIG 350i, 450i, 550i
5. Inch Button
The INCH button is active in 10 PIN GMAW/FCAW mode (MIG) only.
Press and hold the INCH button to inch the wire in the Wirefeeder (Active in 10 Pin mode only).
6. Local / Remote Button
The REMOTE button is used to select REMOTE or LOCAL mode of operation.
The REMOTE button is used only when a remote control device (such as a TIG torch with remote current
control, or a Wirefeeder) is fitted to the unit via the remote control socket (items 5 & 6). When the REMOTE
button is in the remote position, the unit will detect a remote device and work accordingly
When in the local mode, the unit will not detect the remote device and will operate from the power source
controls only. Note that the trigger will operate at all times on the remote control socket irrespective of
the position of the local remote switch (ie in both local and remote modes).
Should a remote device be connected and the remote/local switch set to remote, the maximum setting
of the power source will be determined by the respective front panel control, irrespective of the remote
control device setting. As an example, if the output current on the power source front panel is set to 50%
and the remote control device is set to 100%, the maximum achievable output from the unit will be 50%.
Should 100% output be required, the respective front panel control must be set to 100%, in which case
the remote device will then be able to control between 0-100% output.
7. 10 PIN / 19 PIN Remote Button
The REMOTE button is used to select 10 PIN, 19 PIN, mode of operation when the REMOTE button ( item
13) is in REMOTE mode.
When in 10 PIN Remote mode, the 10 PIN control socket is active and remote voltage or current / wirespeed controls will be active.
The 10 PIN Remote mode is only available in GMAW/FCAW (Mig) and GTAW (Lift Tig) modes only.
When in 19 PIN Remote mode, the 19 PIN control socket is active and remote voltage controls will be active.
The 19 PIN Remote mode is only available in GMAW/FCAW (Mig) mode only.
NOTE
When operating a 10 pin Wirefeeder in remote mode, the maximum output is determined by the
settings of the power source (in local mode). This is done such that the maximum output available
at the wirefeeder can be restricted to a preset level. This preset level must be selected whilst the
machine is in local mode.
As an example, should 0-100% output control be required at the wirefeeder, the power source should
be set to local mode, and both the amps (wirespeed) and volts controls set to 100% (maximum). the
wirefeeder will then be able to control between 0-100% of output [both amps(wire speed) and volts].
Should 50% output be required at the wirefeeder controls, the power source should be set to local
mode, and both the amps (wirespeed) and volts set to 50% (mid point). The wirefeeder will then
be able to control between 0-50% of output [both amps(wirespeed and volts)]
NOTE
When a 19 pin wirefeeder in used, 100% output for both amps (wirespeed) and volts is available
at the wirefeeder at all times regardless of the amps (wirespeed) and volts control settings at the
power source (The power source display will show a series of dashes when in 19 pin remote mode).
The wirefeeder can adjust both amps (wirespeed) and volts between 0-100%.
NOTE
Welding Setup Program Storage (10 programs) applies to Mig 10 pin only, Stick and Lift Tig modes.
INSTALLATION, OPERATION AND SETUP
3-6 Manual 0-5205
TRANSMIG 350i, 450i, 550i
8. Process Selection Button
The process selection control is used to select the desired welding mode. Three modes are available,
GMAW/FCAW (MIG), GTAW (Lift TIG) and MMAW (Stick) and Gouging (Transmig 550i only) modes. Refer
to section 3.15 or 3.16 for FCAW/GMAW (MIG) set up details, section 3.17 for GTAW (Lift TIG) set-up
details or section 3.18 for MMAW (stick) set-up details.
Note that when the unit is powered off the mode selection control will automatically default to MIG mode.
This is necessary so as to prevent inadvertent arcing should an electrode holder be connected to the unit
and mistakenly be in contact with the work piece during power up.
9. Trigger Mode Control Button (MIG and LIFT TIG Mode only) (Only applicable to 10 pin mode)
Note that this feature on the power source only applies to devices connected to the 10 pin control socket.
In the case of wirefeeders connected to the 19 pin socket the function is controlled from that independant
wirefeeder only.
The trigger mode control is used to switch the functionality of the of the torch trigger between 2T (normal),
4T (latch mode) and SPOT (spot mode)
2T Normal Mode
In this mode, the torch trigger must remain depressed for the welding output to be active. Press and hold
the torch trigger to activate the power source (weld). Release the torch trigger switch to cease welding.
4T Latch Mode
This mode of welding is mainly used for long welding runs to reduce operator fatigue. In this mode the
operator can press and release the torch trigger and the output will remain active. To deactivate the power
source, the trigger switch must again be depressed and realised, thus eliminating the need for the operator
to hold the torch trigger.
Note that when operating in GTAW (LIFT TIG mode), the power source will remain activated until the
selected down slope time has elapsed (refer Item 10).
SPOT Mode
This mode of welding is similar to 2T mode, except the welding output will be active only for a preset
amount of time. This mainly used for tacking at the start of a job setup. Press and hold the torch trigger
to activate the power source (weld). After the SPOT time has elapsed and welding output has ceased,
release the torch trigger switch.
10. VRD ON/OFF Indicator Lights
A VRD (voltage reduction device) is a hazard reducing device designed to reduce electric shock hazards
present on the output of welding power source when operating in MMAW (stick) mode. Note that
the presence of VRD should not be used as a substitute for the use of appropriate safety practices as
indicated in section one of this manual.
Both the green and red indicator lights only operate in MMAW (stick) mode.
The green VRD ON light illuminates (red light is off) when the VRD is active. Under this condition the
open circuit voltage of the unit is limited to below 35V DC, thus reducing the potential of serious electric
shock (such as when changing electrodes).
The red VRD OFF light illuminates (green light is off) when the VRD is inactive. Under this condition the
output voltage of the unit will be at welding potential which in some cases may exceed 35V DC.
The VRD incorporated within the TRANSMIG 350i, 450i and 550i is fully standards compliant to AS
60974.1 / IEC 60974-1.
Manual 0-5205 3-7
INSTALLATION, OPERATION AND SETUP
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