Lincoln Electric Invertec V405 Operator's Manual

Lincoln Electric Invertec V405 Operator's Manual

Lincoln Electric INVERTEC V405 is a powerful and versatile welding machine designed for industrial applications. It offers multiple welding modes, including Stick (SMAW), Lift TIG (GTAW), and HF TIG (GTAW). The V405 features intuitive controls, advanced functions like Hot Start, Arc Force, and Anti-Sticking, and a robust design for heavy-duty use. This manual provides you with comprehensive information on installation, operation, maintenance, and safety guidelines for the INVERTEC V405, ensuring optimal performance and longevity.

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INVERTEC V405 Operator's Manual | Manualzz
®
IM2006
05/2016
REV08
INVERTEC V205, V270 & V405
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-263 Bielawa, Poland
www.lincolnelectric.eu
Declaration of conformity
Lincoln Electric Bester Sp. z o.o.
Declares that the welding machine:
INVERTEC® V205
INVERTEC® V270
INVERTEC® V405
conforms to the following directives:
2014/35/EU, 2014/30/EU
and has been designed in compliance with the
following standards:
EN 60974-1:2012, EN 60974-10:2014
(EN 60974-3:2014 only for –T/-TP)
20.04.2016
Piotr Spytek
Operations Director
Lincoln Electric Bester Sp. z o.o., ul. Jana III Sobieskiego 19A, 58-263 Bielawa, Poland
English
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English
12/05
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
Safety .............................................................................................................................................................................. 1
Installation and Operator Instructions .............................................................................................................................. 2
Electromagnetic Compatibility (EMC) .............................................................................................................................. 7
Technical Specifications .................................................................................................................................................. 8
WEEE .............................................................................................................................................................................. 9
Spare Parts...................................................................................................................................................................... 9
Electrical Schematic ........................................................................................................................................................ 9
Accessories ................................................................................................................................................................... 10
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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.
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.
SAFETY MARK: This equipment is suitable for supplying power for welding operations carried out in
an environment with increased hazard of electric shock.
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EQUIPMENT WEIGHT OVER 30kg: Move this equipment with care and with the help of another
person. Lifting may be dangerous for your physical health.
HF
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.
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.
Installation and Operator Instructions
Read this entire section before installation or operation
of the machine.
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:
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.








Vac peak voltage: below 410V (for 230Vac input) or
720V (for 400Vac input).

Vac frequency: in the range of 50 and 60 Hertz.

RMS voltage of the AC waveform:
V270, V405:
400Vac ± 15%
V205 2V, V270 2V:
230Vac or 400Vac ± 10%
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 IP23S.
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.
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).
Stick Welding (MMA)
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. For
example, if DC(+)
welding will be used
then connect the
electrode 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.
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:

V205 2V:

V270:

V270 2V:

V405:
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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 (+).
(230 / 400Vac, single phase)
(400Vac, three phase)
(230 / 400Vac, three phase)
(400Vac, three phase)
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Stick welding mode is used the Coolarc 20 will be
OFF.
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; 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.
If a Coolarc 30 is connected to a "V405-T / -TP", it
will be turned ON and OFF with the operation of the
fan. When Stick welding mode is used the Coolarc
30 will be OFF.
C.
For "V###-S" machine, connect the gas hose from the
TIG torch to a gas regulator on the cylinder of gas to be
used.
Gas Inlet (V###-T / -TP only): Connector for the TIG
shielding gas. Use the supplied gas line and
connector to connect the machine to the gas
source. The gas source must have a pressure
regulator and flow gage installed.
D. Mode Switch: This switch changes the welding
modes of the machine. The "V###-S" has two
welding modes: Stick (SMAW) and Lift TIG (GTAW).
The "V###-T / -TP" machines have three welding
modes: Stick (SMAW), Lift TIG (GTAW) and HF TIG
(GTAW).
For "V###-T / -TP" machine, 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. An input gas line and the required fittings are also
included in the package. Connect the TIG torch trigger
to the trigger connector (A) on the front of the machine.
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 (C) 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.
Controls and Operational Features
WARNING
Arc Striking Machine Usage Information
(ASG machines only)
The EN 60974-3 Standard specifies that the "ASG"
equipment is intended to be used with mechanically
guided torch.
A.
Power Switch: Controls the input power to the
machine. Make sure the machine is properly
connected to the input supply before turning the
machine on.
B.
Fan: The cooling fan will turn ON when the
machine is turned ON and it will continue to run
whenever the output of the machine is ON. If the
output of the machine is OFF for more than five
minutes, the fan will turn OFF. This reduces the
amount of dirt that is deposited
inside the machine and
reduces power consumption.
Refer to the Output LED
section below for more
information about conditions
when the output of the
machine is ON.
If a Coolarc 20 is connected to
a "V2##-T / -TP", it will be
turned ON and OFF with the
operation of the fan. When
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When the mode switch is in the Stick position, the
following welding features are enabled:



V###-S: In the stick welding mode, the output of the
machine is automatically turned ON. However, in
the Lift TIG welding mode, the connection of a
remote control determines if the output is ON or
OFF. If a remote control is not connected (the
Remote LED is OFF) then the output of the machine
is automatically turned ON. If a remote control is
connected (the Remote LED is ON) then the output
of the machine is turned ON and OFF by the remote
connector on the front of the machine.
Hot Start: This is a temporary increase in the
output current during the start of the stick
welding process. This helps ignite the arc
quickly and reliably. The amount of hot start
can be adjusted on the "V###-S", refer to Hot
Start, described below.
Arc Force: This is a temporary increase in the
output current during normal stick welding.
This temporary increase in output current is
used to clear intermittent connections between
the electrode and the weld puddle that occur
during normal stick welding. The amount of arc
force can be adjusted on the "V###-S", refer to
Arc Force, described below.
Anti-Sticking: This is a function which
decreases the output current of the machine to
a low level when the operator makes an error
and sticks the electrode to the work piece. This
decrease in current allows the operator to
remove the electrode from the electrode holder
without creating large sparks which can
damage the electrode holder.
V###-T / -TP: In stick welding mode, the output of
the machine is automatically turned ON. However,
in both of the TIG welding modes, the output of the
machine is turned ON and OFF by the TIG torch
connected to the trigger connector on the front of
the machine.
I.
When the mode switch is in the Lift TIG position, the
stick welding functions are disabled and the
machine is ready for Lift TIG welding. Lift TIG is a
method of starting a TIG weld by first pressing the
TIG torch electrode on the work piece in order to
create a low current short circuit. Then, the
electrode is lifted from the work piece to start the
TIG arc.
Stick Welding Mode: The meter displays the
preset welding current but this is adjusted from the
remote control as explained in the Output Current
Control section.
TIG Welding Modes: The meter displays the
maximum output current which is set by the output
current control knob. The preset welding current is
then adjusted by the remote control, but it is not
displayed on the meter.
The last mode switch position, HF TIG, is only
available on the "V###-T / -TP". When the mode
switch is in this position, the stick welding functions
are disabled and the machine is ready for HF TIG
welding. During the HF TIG mode, the TIG arc is
started by HF without pressing the electrode on the
work piece. The HF used for starting the TIG arc
will remain on for 6.5 seconds; if the arc is not
started in this time limit, the trigger sequence must
be restarted.
E.
F.
V###-S: The machine has a Voltage / Current switch
to change the displayed value on the meter. If this
switch is set to voltage, the meter will always display
the output voltage of the machine.
J.
Power LED: This indicator will flash on and off
when the machine is first turned on. After
approximately 2 seconds it will stop flashing and
remain on to signal that the machine is ready.
Output Current Control: This controls the output, or
welding, current of the machine.
The function of this control knob is changed if a
remote control is connected. If the Remote LED is
ON, this indicates that a remote control is connected
and the function of the output current control will be:
Thermal LED: This indicator will turn on when the
machine is overheated and the output has been
disabled. This normally occurs when the duty cycle
of the machine has been exceeded. Leave the
machine on to allow the internal components to
cool. When the indicator turns off, normal operation
is again possible.
Stick Welding Mode: The remote control will
adjust the output current of the machine:



G. Remote LED: This indicator will turn on when a
remote control is connected to the machine via the
remote control connector. Using a remote control
will change the function of the output current control,
refer to the output current control section.
V205: from 5 to 200A
V270: from 5 to 270A
V405: from 5 to 400A
The output current control knob on the display panel
is not used.
TIG Welding Modes: The maximum output current
of the machine is set by the output current control
knob. Then the remote control adjusts the output
current from the minimum output (5A) to the value
set by the output current control knob. For example,
if the output current control knob on the machine is
set to 100A then the remote control will adjust the
H. Output LED: This indicator turns on when the
output of the machine is on. Both the type of
machine and the position of the mode switch
determine when the output of the machine is turned
on.
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Meter: This meter displays the preset welding
current before welding and the actual welding
current during welding. Like the output current
control, the function of the meter is changed if a
remote control is connected. If the Remote LED is
ON, this indicates that a remote control is connected
and the meter will display the following information
before welding (during welding, the meter always
displays the actual welding current):
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output current from a minimum of 5A to a maximum
of 100A.
K.
L.
U. VRD LED's (enabled on Australian Machines only):
This machine is provided by VRD (Voltage
Reduction Device) function: this reduces the
voltage at the output leads.
Hot Start (V###-S only): In stick welding mode, this
controls the amount of current used during the start
of the arc to help ignite the arc quickly and reliably.
In TIG welding mode, this is not used.
The VRD function is enabled by factory default
only on machines that meet the AS 1674.2
Australian Standards. (C-Tick logo " " on/near
the Rating Plate applied on the machine).
Arc Force (V###-S only): In stick welding mode, this
controls the amount of current used during any
intermittent short circuiting of the electrode during
welding. In TIG welding mode, this is not used.
The VRD LED is ON when the Output Voltage is
below 32V with the Machine at idle (no welding
time).
M. Trigger Mode Switch (V###-T / -TP only): This switch
changes between 2-step and 4-step trigger
sequences. For an explanation of these trigger
sequences refer to the trigger sequences explained
below.
For others machines this function is disabled
(the LED is always OFF).
TIG Trigger Sequences
N. Pulsing Mode Switch (V###-TP only): In the TIG
welding modes, this switch turns the pulsing
function ON and controls the pulsing frequency
range (20Hz or 300Hz). In Stick welding mode, this
is not used.
TIG welding can be done in either the 2-step or 4-step
mode. The specific sequences of operation for these
two trigger modes are explained below.
2-Step TIG Sequence
With the 2-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
The Pulsing LED next to the Pulsing Mode Switch
shows the pulsing frequency when pulsing is turned
ON. With this indication, the operator can adjust the
frequency to the desired value before welding.
(Note: At higher frequencies the LED flashes very
fast and seems to be continuously ON however it is
pulsing.)
O. Pulsing Frequency Control (V###-TP only): When
the pulsing function is ON, this control knob will
adjust the pulsing frequency. The pulsing frequency
adjustment range is 0.2-20Hz or 3-300Hz
depending on the Pulsing Mode Switch position.
P.
Pulsing On-time Control (V###-TP only): When the
pulsing function is ON, this control knob will adjust
the pulsing on-time. The on-time can be adjusted
from 10% to 90% of the pulsing period.
Q. Pulsing Background Current Control (V###-TP only):
When the pulsing function is ON, this control knob
will adjust the pulsing background current. This is
the current during the low portion of the pulse
waveform; it can be adjusted from 10% to 90% of
the welding current.
R. Downslope Control (V###-T / -TP only): In the TIG
welding modes, this control knob will adjust the
downslope time from 0.5 to 20 seconds. (The
upslope time is always 0.5 seconds.) Refer to the
trigger sequence section below to understand how
downslope is activated. In Stick welding mode, this
is not used.
S.
Start/Crater Current Control (V###-TP only): This
control knob will adjust the Start/Crater current from
10% to 90% of the welding current. For an
explanation of the start/crater operation, refer to the
trigger sequences explained below.
T.
Postflow Control (V###-T / -TP only): In the TIG
welding modes, this control knob will adjust the
shielding gas postflow time from 0.5 to 30 seconds.
(The preflow time is always 0.5 seconds.) In Stick
welding mode, this is not used.
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1.
Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started according to the selected welding mode.
After the arc is started the output current will be
increased at a controlled rate, or upslope time, until
the Welding current is reached.
2.
Release the TIG torch trigger to stop welding. The
machine will now decrease the output current at a
controlled rate, or downslope time, until the Crater
current is reached and the output of the machine is
turned OFF.
After the arc is turned OFF, the gas valve will
remain open to continue the flow of the shielding
gas to the hot electrode and work piece.
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3A. Quickly press and release the TIG torch
trigger. The machine will now decrease the
output current at a controlled rate, or downslope
time, until the Crater current is reached and the
output of the machine is turned OFF. After the
arc is turned OFF the postflow time will start.
4.
As shown above, it is possible to press and hold the TIG
torch trigger a second time during downslope to end the
downslope function and maintain the output current at
the Crater current. When the TIG torch trigger is
released the output will turn OFF and the postflow time
will start. This operation, 2-step restart disabled, is the
default setting from the factory.
As shown here, after the
TIG torch trigger is quickly
pressed and released from
step 3A, it is possible to
press and hold the TIG
torch trigger another time
to end the downslope time
and maintain the output
current at the Crater
current. When the TIG
torch trigger is released
the output will again
increase to the Welding
current, like in step 4, to continue welding. When the
main part of the weld is complete go to step 3.
4-Step Sequence
With the 4-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
1.
Release the TIG torch trigger. The output current
will again increase to the Welding current, like in
step 2, to continue welding. When the main part of
the weld is complete go to step 3.
As shown here, again after
the TIG torch trigger is
quickly pressed and
released from step 3A, it is
possible to quickly press
and release the TIG torch
trigger a second time to
end the downslope time
and stop welding.
Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started according to the selected welding mode.
After the arc is started the output current will be at
the Start current. This condition can be maintained
as long or as short as necessary.
04/03
Maintenance
If the Start current is not necessary, do not hold the
TIG torch trigger as described at the beginning of
this step. In this condition, the machine will pass
from Step 1 to Step 2 when the arc is started.
WARNING
For any maintenance or repair operations it is
recommended to contact the nearest technical service
center or Lincoln Electric. Maintenance or repairs
performed by unauthorized service centers or personnel
will null and void the manufacturers warranty.
2.
Releasing the TIG torch trigger starts the upslope
function. The output current will be increased at a
controlled rate, or upslope time, until the Welding
current is reached.
The frequency of the maintenance operations may vary
in accordance with the working environment. Any
noticeable damage should be reported immediately.
3.
Press and hold the TIG torch trigger when the main
part of the weld is complete. The machine will now
decrease the output current at a controlled rate, or
downslope time, until the Crater current is reached.
This Crater current can be maintained as long or as
short as necessary.

Check cables and connections integrity. Replace, if
necessary.

Keep clean the machine. Use a soft dry cloth to
clean the external case, especially the airflow inlet /
outlet louvers.
This sequence has an automatic restart so welding
will continue after this step. This operation, 4-step
restart enabled, is the default setting from the
factory. If the weld is completely finished, use the
following sequence instead of step 3 described
above.
WARNING
Do not open this machine and do not introduce anything
into its openings. Power supply must be disconnected
from the machine before each maintenance and service.
After each repair, perform proper tests to ensure safety.
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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.
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Technical Specifications
V205 2V:
Input Voltage
230 / 400V  10%
Single Phase
Duty Cycle
INPUT
Input Power at Rated Output
5.5kW @ 100% Duty Cycle
6.5kW @ 35% Duty Cycle
RATED OUTPUT AT 40°C
Output Current
EMC Class
A group 2
Frequency
50/60 Hz
Output Voltage
(Based on a 10 min. period)
100%
35%
170A
200A
OUTPUT RANGE
26.8 Vdc
28.0 Vdc
Maximum Open Circuit Voltage
48 Vdc (CE model)
32 Vdc (AUSTRALIA model)
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse or Circuit Breaker Size
Input Power Cable
2
32A Superlag (230 / 400V input)
3 Conductor, 4mm
PHYSICAL DIMENSIONS
Height
Width
Length
Weight
385 mm
215 mm
480 mm
14.1 - 15.1 Kg
Operating Temperature
Storage Temperature
–10°C to +40°C
-25°C to +55°C
Welding Current Range
5 - 200 A
V270, V270 ASG, V270 2V & V270 2V ASG:
INPUT
Input Voltage
400V  15% (V270)
230 / 400V  10% (V270 2V)
Three Phase
Duty Cycle
Input Power at Rated Output
6.5kW @ 100% Duty Cycle
9.9kW @ 35% Duty Cycle
RATED OUTPUT AT 40°C
Output Current
EMC Class
A group 2
Frequency
50/60 Hz
Output Voltage
(Based on a 10 min. period)
100%
35%
200A
270A
OUTPUT RANGE
28.0 Vdc
30.8 Vdc
Maximum Open Circuit Voltage
48 Vdc (CE model)
32 Vdc (AUSTRALIA model)
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse or Circuit Breaker Size
Input Power Cable
20A Superlag (400V input)
4 Conductor, 2.5mm2 (V270)
2
35A Superlag (230V input)
4 Conductor, 4mm (V270 2V)
PHYSICAL DIMENSIONS
Height
Width
Length
Weight
385 mm
215 mm
480 mm
13.5 - 14.5 Kg
Operating Temperature
Storage Temperature
–10°C to +40°C
-25°C to +55°C
Welding Current Range
5 - 270 A
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V405:
Input Voltage
400V  15%
Three Phase
Duty Cycle
INPUT
Input Power at Rated Output
11.3 kW @ 100% Duty Cycle
17.2 kW @ 35% Duty Cycle
RATED OUTPUT AT 40°C
Output Current
EMC Class
A group 2
Frequency
50/60 Hz
Output Voltage
(Based on a 10 min. period)
100%
35%
300A
400A
OUTPUT RANGE
32.0 Vdc
36.0 Vdc
Maximum Open Circuit Voltage
48 Vdc (CE model)
32 Vdc (AUSTRALIA model)
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse or Circuit Breaker Size
Input Power Cable
30A Superlag
4 Conductor, 4mm2
PHYSICAL DIMENSIONS
Height
Width
Length
Weight
500 mm
275 mm
610 mm
31 - 33 kg
Operating Temperature
Storage Temperature
-10°C to +40°C
-25°C to +55°C
Welding Current Range
5 - 400 A
WEEE
English
07/06
Do not dispose of electrical equipment together with normal waste!
In observance of European Directive 2012/19/EC on Waste Electrical and Electronic Equipment (WEEE)
and its implementation in accordance with national law, electrical equipment that has reached the end of its
life must be collected separately and returned to an environmentally compatible recycling facility. As the
owner of the equipment, you should get information on approved collection systems from our local
representative.
By applying this European Directive you will protect the environment and human health!
Spare Parts
12/05
Part List reading instructions

Do not use this part list for a machine if its code number is not listed. Contact the Lincoln Electric Service
Department for any code number not listed.

Use the illustration of assembly page and the table below to determine where the part is located for your particular
code machine.

Use only the parts marked "X" in the column under the heading number called for in the assembly page (# indicate
a change in this printing).
First, read the Part List reading instructions above, then refer to the "Spare Part" manual supplied with the machine, that
contains a picture-descriptive part number cross-reference.
Electrical Schematic
Refer to the "Spare Part" manual supplied with the machine.
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Accessories
V205-TP
V270-T / -TP
V405-TP
W6100316R
V205
V270
V405
W6100317R
V205-TP
V270-T / -TP
V405-TP
W8800072R
V205
V270
V405
K10095-1-15M
V205-TP
V270-T / -TP
V405-TP
K870
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Trigger Connector (5 pins).
Remote Connector (6 pins).
Male Quick Connect Gas Fitting.
Hand Amptrol.
Foot Amptrol.
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Key Features

  • 400A Output
  • Stick/TIG Welding
  • HF Arc Start
  • Remote Control
  • Pulsing Function
  • Upslope/Downslope
  • Start/Crater Current
  • Postflow Control
  • Digital Meter
  • Overheat Protection

Frequently Answers and Questions

What welding modes does the INVERTEC V405 support?
The INVERTEC V405 supports Stick (SMAW), Lift TIG (GTAW), and HF TIG (GTAW) welding modes.
How do I adjust the output current for stick welding?
Use the output current control knob on the front panel to adjust the welding current. If a remote control is connected, the output current can be adjusted using the remote control.
What is the purpose of the Hot Start and Arc Force functions?
Hot Start helps ignite the arc quickly and reliably, while Arc Force provides additional current to maintain a stable arc during intermittent short circuits.
How do I activate the pulsing function?
The INVERTEC V405 has a Pulsing Mode Switch that enables the pulsing function and sets the frequency range. Use the pulsing frequency and on-time controls to fine-tune the settings.
What is the downslope time, and how do I adjust it?
Downslope time controls the rate at which the output current decreases when you release the TIG torch trigger. It is adjustable from 0.5 to 20 seconds using the Downslope Control knob.

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