Lincoln Electric INVERTEC 400TPX User manual

IM2041
09/2022
REV13
INVERTEC300TPX & 400TPX
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-260 Bielawa, Poland
www.lincolnelectric.eu

English English
I
12/05
THANKS! For having chosen the QUALITY of the Lincoln Electric products.
Please Examine Package and Equipment for Damage. Claims for material damaged in shipment must be notified
immediately to the dealer.
For future reference record in the table below your equipment identification information. Model Name, Code & Serial
Number can be found on the machine rating plate.
Model Name:
………………...…………………………….…………………………………………………………………………………………..
Code & Serial number:
………………….……………………………………………….. …………………………………………………….……………..
Date & Where Purchased:
…………………………………………………………………... ……………………….…………………………………………..
ENGLISH INDEX
Technical Specifications...............................................................................................................................................................1
ECO design information ...............................................................................................................................................................2
Electromagnetic Compatibility (EMC) ..........................................................................................................................................4
Safety............................................................................................................................................................................................5
Installation and Operator Instructions ..........................................................................................................................................7
WEEE .........................................................................................................................................................................................21
Spare Parts.................................................................................................................................................................................21
REACh........................................................................................................................................................................................21
Authorized Service Shops Location...........................................................................................................................................21
Electrical Schematic ...................................................................................................................................................................21
Suggested Accessories..............................................................................................................................................................22

English 1 English
Technical Specifications
NAME INDEX
INVERTEC300TPX CE K12060-1
INVERTEC300TPX AUS K12060-2
INVERTEC300TPX CCC K12060-6
INVERTEC400TPX CE K12043-1
INVERTEC400TPX AUS K12043-2
INVERTEC400TPX CCC K12043-6
INPUT
Input Voltage Input Power at Rated Output EMC Class Frequency
400V 15%
Three Phase
300TPX
6.5kW @ 100% Duty Cycle (Stick)
5.1kW @ 100% Duty Cycle (TIG)
9.8kW @ 40% Duty Cycle (Stick)
8.1kW @ 40% Duty Cycle (TIG)
A 50/60Hz
400TPX
10.8kW @ 100% Duty Cycle (Stick)
7.6kW @ 100% Duty Cycle (TIG)
16.4kW @ 35% Duty Cycle (Stick)
11.9kW @ 35% Duty Cycle (TIG)
A 50/60Hz
RATED OUTPUT AT 40°C
Duty Cycle
(Based on a 10 min. period) Output Current Output Voltage
300TPX
100% (Stick) 200A 28.0Vdc
100% (TIG) 220A 18.8Vdc
40% (Stick) 270A 30.8Vdc
40% (TIG) 300A 22.0Vdc
400TPX
100% (Stick) 300A 32.0Vdc
100% (TIG) 300A 22.0Vdc
35% (Stick) 400A 36.0Vdc
35% (TIG) 400A 26.0Vdc
OUTPUT RANGE
Welding Current Range Maximum Open Circuit Voltage
300 TPX 5 – 270A (Stick) / 5 – 300A (TIG) 65Vdc (CE model)
400 TPX 5 – 400A 12Vdc (AUSTRALIA model)
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse (delayed) or Circuit Breaker
(“D” characteristic) Size Input Power Cable
300 TPX 20A 4x2.5mm2
400 TPX 30A 4x4mm2
PHYSICAL DIMENSIONS
Height Width Length Weight
300 TPX 389mm 247mm 502mm 21kg
400 TPX 455mm 301mm 632mm 35kg
Operating Temperature Storage Temperature
-10°C to +40°C -25°C to +55°C

English 2 English
ECO design information
The equipment has been designed in order to be compliant with the Directive 2009/125/EC and the Regulation
2019/1784/EU.
Efficiency and idle power consumption:
Index Name Efficiency when max power consumption
/ Idle power consumption Equivalent model
K12060-1 INVERTEC300TPX CE 85,7% / 23W No equivalent model
K12060-2 INVERTEC300TPX AUS 85,7% / 23W No equivalent model
K12060-6 INVERTEC300TPX CCC 85,7% / 23W No equivalent model
K12043-1 INVERTEC400TPX CE 86,3% / 20W No equivalent model
K12043-2 INVERTEC400TPX AUS 86,3% / 20W No equivalent model
K12043-6 INVERTEC400TPX CCC 86,3% / 20W No equivalent model
Idle state occurs under the condition specified in below table
IDLE STATE
Condition Presence
MIG mode
TIG mode X
STICK mode X
After 30 minutes of non-working X
Fan off X
The value of efficiency and consumption in idle state have been measured by method and conditions defined in the product
standard EN 60974-1:20XX.
Manufacturer’s name, product name, code number, product number, serial number and date of production can be read from
rating plate.
XXXXXXXXXX
Code: XXXXX XXXXXX-X
S/N: P1YYMMXXXXX
12
34
5
P1 YY MM XXXXX
5A5A 5B 5D5C
XXXXXXX
Where:
1- Manufacturer name and address
2- Product name
3- Code number
4- Product number
5- Serial number
5A- country of production
5B- year of production
5C- month of production
5D- progressive number different for each machine

English 3 English
Typical gas usage for MIG/MAG equipment:
Material type
Wire
diameter
[mm]
DC electrode positive Wire Feeding
[m/min] Shielding Gas Gas flow [l/min]
Current
[A]
Voltage
[V]
Carbon, low
alloy steel 0,9 ÷ 1,1 95 ÷ 200 18 ÷ 22 3,5 – 6,5 Ar 75%, CO225% 12
Aluminium 0,8 ÷ 1,6 90 ÷ 240 18 ÷ 26 5,5 – 9,5 Argon 14 ÷ 19
Austenic
stainless steel 0,8 ÷ 1,6 85 ÷ 300 21 ÷ 28 3 - 7 Ar 98%, O22% / He 90%, Ar 7,5% CO22,5% 14 ÷ 16
Copper alloy 0,9 ÷ 1,6 175 ÷ 385 23 ÷ 26 6 - 11 Argon 12 ÷ 16
Magnesium 1,6 ÷ 2,4 70 ÷ 335 16 ÷ 26 4 - 15 Argon 24 ÷ 28
Tig Process:
In TIG welding process, gas usage depends on cross-sectional area of the nozzle. For commonly used torches:
Helium: 14-24 l/min
Argon: 7-16 l/min
Notice: Excessive flow rates causes turbulence in the gas stream which may aspirate atmospheric contamination into the
welding pool.
Notice: A cross wind or draft moving can disrupt the shielding gas coverage, in the interest of saving of protective gas use
screen to block air flow.
End of life
At end of life of product, it has to be disposal for recycling in accordance with Directive 2012/19/EU (WEEE), information
about the dismantling of product and Critical Raw Material (CRM) present in the product, can be found at
https://www.lincolnelectric.com/en-gb/support/Pages/operator-manuals-eu.aspx

English 4 English
Electromagnetic Compatibility (EMC)
01/11
This machine has been designed in accordance with all relevant directives and standards. However, it may still generate
electromagnetic disturbances that can affect other systems like telecommunications (telephone, radio, and television) or
other safety systems. These disturbances can cause safety problems in the affected systems. Read and understand this
section to eliminate or reduce the amount of electromagnetic disturbance generated by this machine.
This machine has been designed to operate in an industrial area. The operator must install and operate this
equipment as described in this manual. If any electromagnetic disturbances are detected the operator must put
in place corrective actions to eliminate these disturbances with, if necessary, assistance from Lincoln Electric.
This equipment does not comply with IEC 61000-3-12. If it is connected to a public low-voltage system, it is
responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if
necessary, that the equipment may be connected.
Before installing the machine, the operator must check the work area for any devices that may malfunction because of
electromagnetic disturbances. Consider the following.
Input and output cables, control cables, and telephone cables that are in or adjacent to the work area and the machine.
Radio and/or television transmitters and receivers. Computers or computer controlled equipment.
Safety and control equipment for industrial processes. Equipment for calibration and measurement.
Personal medical devices like pacemakers and hearing aids.
Check the electromagnetic immunity for equipment operating in or near the work area. The operator must be sure that
all equipment in the area is compatible. This may require additional protection measures.
The dimensions of the work area to consider will depend on the construction of the area and other activities that are
taking place.
Consider the following guidelines to reduce electromagnetic emissions from the machine.
Connect the machine to the input supply according to this manual. If disturbances occur if may be necessary to take
additional precautions such as filtering the input supply.
The output cables should be kept as short as possible and should be positioned together. If possible connect the work
piece to ground in order to reduce the electromagnetic emissions. The operator must check that connecting the work
piece to ground does not cause problems or unsafe operating conditions for personnel and equipment.
Shielding of cables in the work area can reduce electromagnetic emissions. This may be necessary for special
applications.
WARNING
The Class A equipment is not intended for use in residential locations where the electrical power is provided by the public
low-voltage supply system. There can be potential difficulties in ensuring electromagnetic compatibility in those locations,
due to conducted as well as radio-frequency disturbances.

English 5 English
Safety
01/11
WARNING
This equipment must be used by qualified personnel. Be sure that all installation, operation, maintenance and repair
procedures are performed only by qualified person. Read and understand this manual before operating this equipment.
Failure to follow the instructions in this manual could cause serious personal injury, loss of life, or damage to this equipment.
Read and understand the following explanations of the warning symbols. Lincoln Electric is not responsible for damages
caused by improper installation, improper care or abnormal operation.
WARNING: This symbol indicates that instructions must be followed to avoid serious personal injury, loss
of life, or damage to this equipment. Protect yourself and others from possible serious injury or death.
READ AND UNDERSTAND INSTRUCTIONS: Read and understand this manual before operating this
equipment. Arc welding can be hazardous. Failure to follow the instructions in this manual could cause
serious personal injury, loss of life, or damage to this equipment.
ELECTRIC SHOCK CAN KILL: Welding equipment generates high voltages. Do not touch the electrode,
work clamp, or connected work pieces when this equipment is on. Insulate yourself from the electrode,
work clamp, and connected work pieces.
ELECTRICALLY POWERED EQUIPMENT: Turn off input power using the disconnect switch at the fuse
box before working on this equipment. Ground this equipment in accordance with local electrical
regulations.
ELECTRICALLY POWERED EQUIPMENT: Regularly inspect the input, electrode, and work clamp
cables. If any insulation damage exists replace the cable immediately. Do not place the electrode holder
directly on the welding table or any other surface in contact with the work clamp to avoid the risk of
accidental arc ignition.
ELECTRIC AND MAGNETIC FIELDS MAY BE DANGEROUS: Electric current flowing through any
conductor creates electric and magnetic fields (EMF). EMF fields may interfere with some pacemakers,
and welders having a pacemaker shall consult their physician before operating this equipment.
CE COMPLIANCE: This equipment complies with the European Community Directives.
ARTIFICIAL OPTICAL RADIATION: According with the requirements in 2006/25/EC Directive and
EN 12198 Standard, the equipment is a category 2. It makes mandatory the adoption of Personal
Protective Equipments (PPE) having filter with a protection degree up to a maximum of 15, as required by
EN169 Standard.
FUMES AND GASES CAN BE DANGEROUS: Welding may produce fumes and gases hazardous to
health. Avoid breathing these fumes and gases. To avoid these dangers the operator must use enough
ventilation or exhaust to keep fumes and gases away from the breathing zone.
ARC RAYS CAN BURN: Use a shield with the proper filter and cover plates to protect your eyes from
sparks and the rays of the arc when welding or observing. Use suitable clothing made from durable
flame-resistant material to protect you skin and that of your helpers. Protect other nearby personnel with
suitable, non-flammable screening and warn them not to watch the arc nor expose themselves to the arc.

English 6 English
WELDING SPARKS CAN CAUSE FIRE OR EXPLOSION: Remove fire hazards from the welding area
and have a fire extinguisher readily available. Welding sparks and hot materials from the welding process
can easily go through small cracks and openings to adjacent areas. Do not weld on any tanks, drums,
containers, or material until the proper steps have been taken to insure that no flammable or toxic vapors
will be present. Never operate this equipment when flammable gases, vapors or liquid combustibles are
present.
WELDED MATERIALS CAN BURN: Welding generates a large amount of heat. Hot surfaces and
materials in work area can cause serious burns. Use gloves and pliers when touching or moving
materials in the work area.
EQUIPMENT WEIGHT OVER 30kg: Move this equipment with care and with the help of another person.
Lifting may be dangerous for your physical health.
CYLINDER MAY EXPLODE IF DAMAGED: Use only compressed gas cylinders containing the correct
shielding gas for the process used and properly operating regulators designed for the gas and pressure
used. Always keep cylinders in an upright position securely chained to a fixed support. Do not move or
transport gas cylinders with the protection cap removed. Do not allow the electrode, electrode holder,
work clamp or any other electrically live part to touch a gas cylinder. Gas cylinders must be located away
from areas where they may be subjected to physical damage or the welding process including sparks and
heat sources.
HF
CAUTION: The high frequency used for contact-free ignition with TIG (GTAW) welding, can interfere with
the operation of insufficiently shielded computer equipment, EDP centers and industrial robots, even
causing complete system breakdown. TIG (GTAW) welding may interfere with electronic telephone
networks and with radio and TV reception.
SAFETY MARK: This equipment is suitable for supplying power for welding operations carried out in an
environment with increased hazard of electric shock.
The manufacturer reserves the Right to make changes and/or improvements in design without upgrade at the same time
the operator’s manual.

English 7 English
Installation and Operator Instructions
Read this entire section before installation or operation of
the machine.
Location and Environment
This machine will operate in harsh environments.
However, it is important that simple preventative
measures are followed to assure long life and reliable
operation.
Do not place or operate this machine on a surface with
an incline greater than 15° from horizontal.
Do not use this machine for pipe thawing.
This machine must be located where there is free
circulation of clean air without restrictions for air
movement to and from the air vents. Do not cover the
machine with paper, cloth or rags when switched on.
Dirt and dust that can be drawn into the machine
should be kept to a minimum.
This machine has a protection rating of IP23. Keep it
dry when possible and do not place it on wet ground
or in puddles.
Locate the machine away from radio controlled
machinery. Normal operation may adversely affect the
operation of nearby radio controlled machinery, which
may result in injury or equipment damage. Read the
section on electromagnetic compatibility in this
manual.
Do not operate in areas with an ambient temperature
greater than 40°C.
Input Supply Connection
Check the input voltage, phase, and frequency supplied to
this machine before turning it on. The allowable input
voltage is indicated in the technical specification section of
this manual and on the rating plate of the machine. Be
sure that the machine is grounded.
Make sure the amount of power available from the input
connection is adequate for normal operation of the
machine. The fuse rating and cable sizes are both
indicated in the "Technical Specification" section of this
manual.
The machines are designed to operate on engine driven
generators as long as the auxiliary can supply adequate
voltage, frequency and power as indicated in the
"Technical Specification" section of this manual. The
auxiliary supply of the generator must also meet the
following conditions:
Vac peak voltage: below 670V
Vac frequency: in the range of 50 and 60Hz
RMS voltage of the AC waveform: 400Vac ± 15%
It is important to check these conditions because many
engine driven generators produce high voltage spikes.
Operation of this machine on engine driven generators not
conforming to these conditions is not recommended and
may damage the machine.
Output Connections
A quick disconnect system using Twist-Matecable
plugs is used for the welding cable connections. Refer to
the following sections for more information on connecting
the machine for operation of stick welding (MMA) or TIG
welding (GTAW).
(+) Positive Quick Disconnect: Positive output
connector for the welding circuit.
(-) Negative Quick Disconnect: Negative output
connector for the welding circuit.
Stick Welding (MMA)
This machine does not include a MMA welding kit cables,
but may be purchased separately. Refer to the
accessories section for more information.
First determine the proper electrode polarity for the
electrode to be used. Consult the electrode data for this
information. Then connect the output cables to the output
terminals of the machine for the selected polarity. Shown
here is the connection method for DC(+) welding.
Connect the electrode cable to the (+) terminal and the
work clamp to the (-) terminal. Insert the connector with
the key lining up with the keyway and rotate
approximately ¼ turn clockwise. Do not over tighten.
For DC(-) welding, switch the cable connections at the
machine so that the electrode cable is connected to (-)
and the work clamp is connected to (+).

English 8 English
TIG Welding (GTAW)
This machine does not include a TIG torch necessary for
TIG welding, but one may be purchased separately.
Refer to the accessories section for more information.
Most TIG welding is done with DC(-) polarity shown here.
If DC(+) polarity is necessary switch the cable
connections at the machine.
Connect the torch cable to the (-)
terminal of the machine and the
work clamp to the (+) terminal.
Insert the connector with the key
lining up with the keyway and
rotate approximately ¼ turn
clockwise. Do not over tighten.
Finally, connect the gas hose from the TIG torch to the
gas connector (B) on the front of the machine. If
necessary, an extra gas connector for the fitting on the
front of the machine is included in the package. Next,
connect the fitting on the back of the machine to a gas
regulator on the cylinder of gas to be used. The required
fittings are included in the package. Connect the TIG torch
trigger to the trigger connector (A) on the front of the
machine.
TIG Welding with a Water Cooled Torch
A cooling unit can be applied to the Machine:
COOLARC-21 for 300TPX
COOLARC-46 for 400TPX
If a Coolarc unit listed above is connected to the Machine,
it will be automatically turned ON and OFF in order to
ensure the torch cooling. When Stick welding mode is
used the cooler will be OFF.
This machine does not include a cooled TIG torch, but
one may be purchased separately. Refer to the
accessories section for more information.
WARNING
The Machine is provided with an electrical connection for
the Coolarc unit on its rear side. This socket is ONLY for
the connection of the Coolarc unit listed above.
WARNING
Before connecting the cooler unit to the Machine and
operate, read and understand the Instruction Manual
supplied with the cooling unit.
Remote Control Connection
Refer to the accessories section for a list of
remote controls. If a remote control is used,
it will be connected to the remote connector
on the front of the machine. The machine
will automatically detect the remote control,
turn on the REMOTE LED, and switch to remote control
mode. More information on this mode of operation will be
given in the next section.
Rear Panel
A. Power Switch: It turns ON /
OFF the input power to the
machine.
B. Input cable: Connect it to the
mains.
C. Fan: Do not obstruct or filter
the fan inlet. The “F.A.N.” (Fan
As Needed) feature
automatically turns OFF/ON
the fan. When the Machine is
turned ON the fan is turned ON
only for the startup time (few seconds). The fan will
start with welding operations and will continue to run
whenever the Machine is welding. If the Machine
doesn’t weld for more than 7½ minutes, it will go in
Green Mode.
Green Mode
The Green Mode is a feature that puts the machine in a
stand-by condition:
The output is disabled
The fan is turned OFF
Only the Power ON LED remains ON.
A moving red dash is shown in the “V” and “A”
displays
This reduces the amount of dirt that can be drawn inside
the Machine and the power consumption.
To restore the Machine restart to weld or push the TIG
torch trigger or push any button in the front panel or turn
the encoder knob.
Only for the 300TPX it is possible to disable the Green
Mode funcionality with Menu Option 60: ON (factory
default) Green Mode enable, OFF Green Mode disable.
NOTE: Green Mode long time condition: each 10min of
continuous Green Mode the fan runs for 1min.
NOTE: If a COOLARC TIG torch cooling unit is connected
to the machine, it will be turned ON/OFF by the Green
Mode feature.
D. Gas Inlet: Connector for the TIG shielding gas. Use
the supplied connector to connect the machine to the
gas source line. The gas source must have a
pressure regulator and flow gage installed.
E. Power supply socket for Coolarc: 400Vac socket.
Connect here the Coolarc cooling unit.