Lincoln Electric INVERTEC 170TX Series User manual

IM2050
10/2019
REV08
INVERTEC170TX 170TPX & 220TPX
OPERATOR’S MANUAL
ENGLISH
Lincoln Electric Bester Sp. z o.o.
ul. Jana III Sobieskiego 19A, 58-263 Bielawa, Poland
www.lincolnelectric.eu

English English
I
12/05
THANKS! For having choosen 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 (170TX/TPX) CE model ............................................................................................................... 1
Technical Specifications (170TPX) AUS models................................................................................................................. 2
Technical Specifications (220TPX) CE and AUS model ..................................................................................................... 3
Electromagnetic Compatibility (EMC) for 170TX/TPX ......................................................................................................... 4
Electromagnetic Compatibility (EMC) for 220TPX............................................................................................................... 5
Safety.................................................................................................................................................................................. 6
Installation and Operator Instructions.................................................................................................................................. 8
WEEE ............................................................................................................................................................................... 20
Spare Parts ....................................................................................................................................................................... 20
Authorized Service Shops Location .................................................................................................................................. 20
Electrical Schematic.......................................................................................................................................................... 20
Suggested Accessories..................................................................................................................................................... 21

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1
Technical Specifications (170TX/TPX) CE model
NAME INDEX
INVERTEC170TX CE K12054-1
INVERTEC170TPX CE K12055-1
INPUT
Input Voltage U1EMC Class Frequency
230Vac ± 15% A 50/60 Hz
Input Line Input Power at Rated Cycle Input Amperes I1max cosφ
230Vac
100% (Stick) 3.2KW
30% Stick
37A
30% Stick
0.6
100% (TIG) 2.5KW
30% (Stick) 5.1KW
35% (TIG) 3.7KW
RATED OUTPUT
Input Line Duty Cycle 40°C
(based on a 10 min. period) Output Current I2 Output Voltage U2
230Vac
100% (Stick) 110A 24.4V
100% (TIG) 130A 15.2V
30% (Stick) 160A 26.4V
35% (TIG) 170A 16.8V
OUTPUT RANGE
Welding Current Range Open Circuit Voltage OCV U0
5 – 170A 63 Vdc
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse (time delayed) or Circuit Breaker Size Input Power Cable
16A 3x2.5mm2
DIMENSIONS AND WEIGHT
Height Width Length Net Weight
328 mm 212 mm 456 mm 12 Kg
Operating Temperature Storage Temperature Operating Humidity
(t=20°C) Protection Degree
-10°C to +40°C -25°C to 55°C Not Applicable IP23

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2
Technical Specifications (170TPX) AUS models
NAME INDEX
INVERTEC170TPX AUS K12055-2
INPUT
Input Voltage U1EMC Class Frequency
230Vac ± 15% A 50/60 Hz
Input Line Input Power at Rated Cycle Input Amperes I1max cosφ
230Vac
100% (Stick) 3.2KW
30% Stick
37 A
30% Stick
0.6
100% (TIG) 2.5KW
30% (Stick) 5.1KW
30% (TIG) 3.7KW
240Vac
(15A circuit
braker)
100% (Stick) 2 kW
25% Stick
37 A
30% Stick
0.6
100% (TIG) 1.9 kW
15% (Stick) 5.2 kW
25% (TIG) 3.8 kW
RATED OUTPUT
Input Line Duty Cycle 40°C
(based on a 10 min. period) Output Current I2 Output Voltage U2
230Vac
100% (Stick) 110A 24.4 V
100% (TIG) 130A 15.2 V
30% (Stick) 160A 26.4 V
30% (TIG) 170A 16.8 V
240Vac
(15A circuit
braker)
100% (Stick) 75 A 23 V
100% (TIG) 100 A 14 V
15% (Stick) 160 A 24.4 V
25% (TIG) 170 A 16.8 V
OUTPUT RANGE
Welding Current Range Open Circuit Voltage OCV U0
5 – 170A 6.5 Vdc
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse (time delayed) or Circuit Breaker Size Input Power Cable
15A 3x2.5mm2
DIMENSIONS AND WEIGHT
Height Width Length Net Weight
328 mm 212 mm 456 mm 12 Kg
Operating
Temperature Storage Temperature Operating Humidity (t=20°C) Protection Degree
-10°C to +40°C -25°C to 55°C Not Applicable IP23

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3
Technical Specifications (220TPX) CE and AUS model
NAME INDEX
INVERTEC220TPX CE K12057-1
INVERTEC220TPX AUS K12057-2
INPUT
Input Voltage U1EMC Class Frequency
115 - 230Vac ± 15% A 50/60 Hz
Input Line Input Power at Rated Cycle Input Amperes I1max cosφ
115Vac
100% (Stick) 2.6 kW
28.3 A 0.997
100% (TIG) 2.3 kW
35% (Stick) 3.3 kW
25% (TIG) 3.5 kW
230Vac
100% (Stick) 3.9 kW
23.5A 0.998
100% (TIG) 3.6 kW
35% (Stick) 5.4 kW
25% (TIG) 5.3 kW
RATED OUTPUT
Input Line Duty Cycle 40°C
(based on a 10 min. period) Output Current I2 Output Voltage U2
230Vac
100% (Stick) 130 A 25.2 V
100% (TIG) 150 A 16.0 V
35% (Stick) 170 A 27.2 V
25% (TIG) 220 A 18.8 V
115Vac
100% (Stick) 90 A 23.6 V
100% (TIG) 110 A 14.4 V
35% (Stick) 110 A 24.4 V
25% (TIG) 160 A 16.4 V
OUTPUT RANGE
Welding Current Range Open Circuit Voltage OCV U0
2 – 220A 63 Vdc for CE model
6.5 Vdc for AUS model
RECOMMENDED INPUT CABLE AND FUSE SIZES
Fuse (time delayed) or Circuit Breaker Size Input Power Cable
16A 3x2.5mm2
DIMENSIONS AND WEIGHT
Height Width Length Net Weight
328 mm 212 mm 456 mm 12 Kg
Operating
Temperature Storage Temperature Operating Humidity (t=20°C) Protection Degree
-10°C to +40°C -25°C to 55°C Not Applicable IP23

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4
Electromagnetic Compatibility (EMC) for 170TX/TPX
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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5
Electromagnetic Compatibility (EMC) for 220TPX
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 is compliant with EN 61000-3-12 and EN 61000-3-11 if the public low
voltage system impedance at the point of common coupling is lower than 0,322 Ω. It is the responsibility of the installer
or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the system
impedance complies with the impedance restrictions.
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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6
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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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.
The manufacturer reserves the Right to make changes and/or improvements in design without upgrade at the same time
the operator’s manual.

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Installation and Operator Instructions
General Description
Invertec 170TX/TPX and 220TPX are constant current,
continous control arc welding power sources for stick
and tig process. They provide superior and reliable
starting characteristics and arc stability.
The 220TPX has a PFC input that reduces the input
supply current requirements and allows wide input
voltage range operation.
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
The machines are a wide input voltage range: before
installing and turning it on, check the supplied input
voltage, phase, and frequency. The allowable input
voltage range, phase, and frequency are indicated in the
technical specification section of this manual and on the
machine’s rating plate. Be sure that the machine is
grounded.
Make sure the power available at 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.
Input Supply From Engine Driven Generators
The machine is 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 410V.
Vac frequency: in the range of 50 and 60Hz.
RMS voltage of the AC waveform:
from 115V to 230V ± 15%.(220TPX)
230vac ± 15%.(170TX/TPX)
It is important to check these conditions because many
engine driven generators produce high voltage spikes.
Operation of this machine with 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 (+).
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.

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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. 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 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
regulates the speed of
thefan. If the Machine
doesn’t weld for more than 5 minutes, it will enter
Green Mode.
Green Mode
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 display
This reduces the amount of dirt that can be drawn
inside the Machine and the power consumption.
To restore the Machine simply restart to weld.
NOTE: Green Mode long time condition: each 10min
of continuous Green Mode the fan runs for 1min.
D. Gas Inlet: 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.
Controls and Operational Features
Machine Start-Up:
When the machine is turned ON an auto-test is
executed: during this test all the LEDs turn ON in
sequence; at the same time the displays show “333” and
then “888”.
The Machine is ready to operate when on the Front
Control Panel lights up the “Power ON” LED, the “A”
LED (placed on the middle of the synoptic) with one
of the LED of the Welding “MODE” command. This
is the minimum condition: depending by the welding
selection others LEDs may be ON.
Front Panel Indicators and Controls
Power ON LED:
This LED blinks during the machine start-up and lights
up steadily when the machine is ready to operate.
If the Input Voltage Overrange protection becomes
active, the Power ON LED starts blinking and an error
code is shown on the displays. The machine restarts
automatically when the Input Voltage returns in the
correct range. For further detail read the Error Codes
and Troubleshooting section.

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Remote LED:
This indicator will turn on when a Remote command is
connected to the machine via the remote control
connector.
If a Remote command is connected to the Machine, the
Output Current knob operates in two different modes:
STICK and TIG:
STICK mode: with a Remote command
connected the output of the machine is ON. A
Remote Amptrol or Pedal are allowed (trigger is
ignored).
Connecting the Remote command excludes the
Output Current Knob of the Machine’s user
interface. Through the Remote command is
available the full Output Current Range.
TIG mode: in Local and remote mode the
output of the machine is OFF. A Trigger is
necessary to enable the output.
For 170TX/TPX: The Output Current range
selectable from the Remote command depends by
the Machine’s user interface Output Current Knob.
Eg.: if the Output Current is set to 100A with the
Machine’s user interface Output Current Knob, the
Remote command will adjust the Output Current
from a minimum of 2A to a maximum of 100A.
For 220TPX: The Output Current range selectable
from the Remote command depends by the
Machine’s user interface Output Current Knob. Eg.:
if the Output Current is set to 100A with the
Machine’s user interface Output Current Knob, the
Remote command will adjust the Output Current
from the minimum current to a maximum of 100A.
The output current set by Output Current Knob is
shown for 3 second whenever the knob is moved.
After the 3 second the value shows is the current
select by the Remote command.
Remote Pedal: For a correct use, the “option 30”
must be enabled in the setup menu:
2-step sequence is automatically selected
Upslope / Downslope ramps and Restart are
disabled.
Spot, Bi-Level and 4-step functions aren’t
selectable
(Normal operation is restored when the Remote
command is disconnected.)
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.
VRD LED (enabled on Australian Machines only):
This machine is provided by VRD (Voltage Reduction
Device) function: this reduces the voltage at the output
leads.
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).
The VRD LED is ON when the Output Voltage is below
12V with the Machine at idle (no welding time).
For others machines this function is disabled (the LED is
always OFF).
Mode Pushbutton:
This pushbutton changes the welding modes of the
machine:
Stick (SMAW)
Lift TIG (GTAW)
HF TIG (GTAW)
Spot TIG (GTAW)
The Spot TIG feature is selectable only if the “option
10” is previously enabled in the Setup Menu. See
“Setup menu” section for options enabling / disabling.
Each welding mode is is detailed in the Operating
instruction section.
Trigger Mode Pushbutton:
This pushbutton changes the trigger sequence in TIG
welding mode:
2-step / 4-step with restart This option is not
selectable by the Trigger Pushbutton and, if
enabled, operates with 2 or 4 step mode:
This indicator will turn on if the restart option is
enabled for the current TIG trigger mode. Restart
can be enabled separately for 2-step and 4-step
modes from the Setup Menu. More information
about restart is available in the Operating instruction
section.
2-step
4-step
Bi-Level

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Each trigger mode is detailed in the Operating instruction
section.
SEL Pushbutton:
The SELect pusbutton is used to scroll the TIG welding
parameters. At each pressure the relevant led is
switched on and the displays show the current value of
the parameter. If a parameter is disabled for the current
mode of working it will be skipped. The user can then
modify this value turning the Output Current knob. If no
change is made after a timeout (4s), the displays and
LEDs will revert to the default state, where the Output
Current knob sets the output current.
Memory Pushbutton:
This pusbutton allows to store (M) or recall (M) TIG
welding programs. 9 memory records (P01 to P9) are
available for the user.
To store or recall a record: Push until the Store (M) or
Recall (M) LED is ON according to the desired
operation
Into the follow display
will appear, turning the knob, from P01 to P10, all the
possible programs.
Then keep pushed for 4s
The Memory pushbutton is disabled during welding.
See “List of parameters and Factory stored programs”
section below for a complete list of factory stored
programs.
Pulsing Mode Pushbutton:
In the TIG welding modes, this pusbutton turns the
pulsing function ON. When active, the LED next to the
pusbutton is turned ON. In Stick welding mode, this
command is disabled.
When Pulse is active is possible to set Duty cycle (%),
Frequency (Hz) and Background (%) parameters.
During TIG welding is not possible switch ON or OFF the
Pulse command: if ON, during welding is possible
operates on the values of Duty, Frequency and
Background current.
Output Current Knob:
It is used to set the Output Current used during welding.
This knob is also a multi-purpose command: see the
“Operating Instruction” section for a description of how to
use this command for parameters selection.
V & A Display:
If the A LED is ON the meter displays the preset welding
current (A) before welding and the actual welding current
during welding. If the V LED is ON the meter shows the
voltage (V) at the output leads. To switch between
Current and Voltage visualization:
Action
Visualization
Press A/V
Current
Press A/V
Voltage
A flashing dot on the Display indicates that the value
read is the average value of the previous welding time.
This feature shows the average value for 5seconds after
every welding time.
If a remote control is connected (the Remote LED is
ON), the meter (A) indicates the preset and the actual
welding current following the instruction explained in the
“Remote LED” description above.
The Display can also show the following set of
characters:
SOFT
CRISP
01, …..10
PROGRAM
For program records
E 01, ......99 For error codes
See “Operating Instruction” section for a detailed
description of the functions described by these
indications.

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12
Operating Instruction
Stick (SMAW) Welding
To select Stick welding:
Action
V
isualization
Press MODE several times until the LED above lights up
When the Stick position is selected, the following
welding features are enabled:
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.
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.
Auto Adaptive Arc Force: this function increases
temporary the output current, used to clear
intermittent connections between the electrode and
the weld puddle that occur during stick welding.
This is an active control feature that guarantees the
best arrangement between the arc stability and
spatter presence. The feature "Auto Adaptive Arc
Force" has instead of a fixed or manual regulation,
an automatic and multilevel setting: its intensity
depends by the output voltage and it is calculated in
real time by the microprocessor where are also
mapped the Arc Force levels. The control measure
in each instant the output voltage and it determines
the amount of the peak of current to apply; that value
is enough to breaks the metal drop that is being
transferred from the electrode to the workpiece as to
guarantee the arc stability, but not too high to avoid
spatters around the welding puddle. That means:
Electrode / workpiece sticking prevention, also
with low current values.
Spatters reduction.
The welding operations are simplified and the welded
joins looks better, also if not brushed after the
welding.
In Stick mode, two different setup are available:
SOFT Stick: For a welding with a low spatter
presence.
CRISP Stick (Factory Default): For an aggressive
welding, with an increased Arc stability.
To switch between Soft and Crisp:
Action
Visualization
At idle, before welding Current/Voltage
Press SEL

Press SEL

Wait 4s or start welding to
store the changes Current
Lift TIG (GTAW welding)
To select Lift TIG welding:
Action
V
isualization
Press MODE several times until the LED above lights up
When the mode pusbutton 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.
HF TIG (GTAW welding)
To select HF TIG welding:
Action
V
isualization
Press MODE several times until the LED above lights up
When the mode pushbutton is in HF TIG 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 3 seconds; if the arc is not started in
this time limit, the trigger sequence must be restarted.
The HF arc start strength can be adjusted in the setup
menu by changing the value of option 40. Four arc start
strengths are available, ranging from 1 (smooth, suitable
for thin electrodes) to 4 (strong, suitable for thick
electrodes). The default value for this option is 3.
Spot TIG (GTAW welding)
The Spot TIG feature is selectable only if the “option 10”
is previously enabled in the Setup Menu.
To select Spot TIG welding:
Action
V
isualization
Press MODE several times until the LED above lights up
This welding mode is especially thought to tack or weld
thin materials. It uses HF start and immediately delivers
the set current without any upslope/downslope. The
welding time can be either linked to the trigger or set
with the spot time control.
If the spot time (“option 11” of the Setup Menu) is
enabled from the setup menu, in order to change the
spot time:
Action Visualization
At idle, before welding Current/Voltage
Press SEL
Spot time
At this point the spot time can be adjusted by turning the
Output Current knob. Setting the spot time to 0 will
disable the fixed time function and the welding time will
be linked to the TIG torch trigger.
NOTE: The HF start strength is adjusted by setup option
40, as described in the HF Tig section above.

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13
See “Setup menu” section for options enabling /
disabling.
Tig Welding Sequences (only model 220TPX-
170TPX)
At each pressure of the SEL
pusbutton the LEDs lights up in the
following order:
1 S
2 %
3 S
4 A
4a %
4b Hz
4d %
5 S
6 %
7 S
1 PREFLOW
In the TIG welding modes, this function controls the
shielding gas Preflow time. In Stick welding mode,
this is not used.
2 START CURRENT
This function controls the initial current when a TIG
welding is started. For an explanation of the Start
operation, refer to the trigger sequences explained
below.
3 UPSLOPE
In the TIG welding modes, this function controls the
linear increase of the current from Start to Set
Current. Refer to the trigger sequence section
below to understand how Upslope is activated. In
Stick welding mode, this is not used.
4 SET CURRENT
This function is used to set the Output Current used
during welding.
4a DUTY CYCLE (PULSING ON-TIME)
When the pulse feature is ON, this function controls
the pulsing on-time. During the on-time the output
current is equal to the Set Current.
4b FREQUENCY
When the pulse feature is ON, this function controls
the pulsing frequency, that is the square wave
represented in the diagram above (Hz).
4d BACKGROUND
When the pulse feature is ON, this function controls
the pulsing Background current. This is the current
during the low portion of the pulse waveform.
5 DOWNSLOPE
In the TIG welding modes, this function controls the
linear decrease of the current from Set to Crater
Current. Refer to the trigger sequence section
below to understand how Downslope is activated.
In Stick welding mode, this is not used.
6 CRATER
This function controls the final current value after
the Downslope. For an explanation of the Crater
operation, refer to the trigger sequences explained
below.
7 POSTFLOW
In the TIG welding modes, this function controls the
shielding gas Postflow time. In Stick welding mode,
this is not used.
During welding the Sel pushbutton is enabled for the
following functions:
Output current
Only if Pulse Function is active: is possible operates
on the values of Duty (%), Frequency (Hz) and
Background current (A).
The new parameter value is automatically saved.
Tig Welding Sequences (only model 170TX)
At each pressure of the SEL
pusbutton the LEDs lights up in the
following order:
1 S
2 %
3 S
4 A
5 S
6 %
7 S
1 PREFLOW
In the TIG welding modes, this function controls the
shielding gas Preflow time. In Stick welding mode,
this is not used.
2 START CURRENT
This function controls the initial current when a TIG
welding is started. For an explanation of the Start
operation, refer to the trigger sequences explained
below.
3 UPSLOPE
In the TIG welding modes, this function controls the
linear increase of the current from Start to Set
Current. Refer to the trigger sequence section
below to understand how Upslope is activated. In
Stick welding mode, this is not used.
4 SET CURRENT
This function is used to set the Output Current used
during welding.
5 DOWNSLOPE
In the TIG welding modes, this function controls the
linear decrease of the current from Set to Crater
Current. Refer to the trigger sequence section
below to understand how Downslope is activated.
In Stick welding mode, this is not used.
6 CRATER
This function controls the final current value after
the Downslope. For an explanation of the Crater
operation, refer to the trigger sequences explained
below.
7 POSTFLOW
In the TIG welding modes, this function controls the
shielding gas Postflow time. In Stick welding mode,
this is not used.

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During welding the Sel pushbutton is not enabled.
The new parameter value is automatically saved.
TIG Trigger Sequences
TIG welding can be done in either the 2-step or 4-step
mode. The specific sequences of operation for the
trigger modes are explained below.
Legenda of the symbols used:
Torch Pushbutton
Output Current
Gas Pre-flow
Gas
Gas Post-flow
2-Step Trigger Sequence
To select 2-Step sequence:
Action
V
isualization
Press several times until the LED above lights up
With the 2-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
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.
If the torch trigger is released during the upslope
time the arc will stop immediately and the output of
the machine is turned OFF.
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.
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 sequence, 2-step with restart
disabled, is the default setting from the factory.
2-Step Trigger Sequence with Restart Option
To select 2-Step with restart sequence:
Action
V
isualization
+
See “Setup menu” section below
then:
Press several times until the LED above lights up
If the 2-step restart option is enabled from the setup
menu the following sequence will occur:
1. Press and hold the TIG torch trigger to start the
sequence as described above.
2. Release the TIG torch trigger to start the
downslope. During this time press and hold the TIG
torch trigger to restart welding. The output current
will increase again at a controlled rate until the
Welding current is reached. This sequence can be
repeated as many times as necessary. When the
welding is complete release the TIG torch trigger.
When the Crater current is reached the output of the
machine is turned OFF.

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15
4-Step Trigger Sequence
To select 4-Step sequence:
Action
V
isualization
Press several times until the LED above lights up
With the 4-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
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 at
the Start current. This condition can be maintained
as long as necessary.
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.
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. If the torch trigger is pushed
during the upslope time the arc will stop immediately
and the output of the machine is turned OFF.
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.
4. This Crater current can be maintained as long as
necessary. When the TIG torch trigger is released
the output of the machine is turned OFF and the
postflow time will start.
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
turn OFF.
This sequence operation, 4-step with restart disabled, is
the default setting from the factory.
4-Step Trigger Sequence with Restart Option
To select 4-Step with restart sequence:
Action
V
isualization
+
See “Setup menu” section below
then:
Press several times until the LED above lights up
If 4-step restart is enabled from the setup menu the
following sequence will occur for steps 3 and 4 (steps 1
and 2 are not altered by the restart option):
3. Press and hold 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.
4. Release the TIG torch trigger. The output current
will again increase to the Welding current, like in
step 2, to continue welding.
If the weld is completely finished, use the following
sequence instead of step 3 described above.
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.
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.

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16
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.
Bi-Level (A1/A2) Trigger sequence
The Bi-Level feature is selectable only if the “option 20”
is previously enabled in the Setup Menu.
To select Bi-Level sequence:
Action
V
isualization
Press several times until the LED above lights up
With this sequence the arc is started as in the 4S
sequence, this means that steps 1 and 2 are the same.
3. Quickly press and release the TIG torch trigger.
The machine will switch the current level from A1 to
A2 (background current). Each time this trigger
action is repeated the current level will switch
between the two levels.
3A. 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 as necessary.
NOTE: The Restart option and the Pulse function are not
available for Bi-Level Trigger sequence.
Torch control functions
Valid only for 220TPX
The torch control functions are available if up/down
module on the torch is assembled on torch and “Option
50” is enabled in the Setup Menu. There are two
functions available:
Option 50 “Cur” change set current value:
Three operating modes, corresponding to different states
of the machine, are identified:
Before welding: pressing the UP or DOWN key
causes a change of value of the Set current
While welding: pressing the UP or DOWN key
causes a change of value of the Set current during
all phases of welding process except during the start
functions, where the UP/DOWN function is masked.
Pre/post Flow: pressing the UP or DOWN key
causes a change of value of the Set current.
The change will be realized in two ways depending on
pressed button time:
Step function
Pressing the UP/DOWN button for a minimum time
of 200ms and releasing it, causes the set current
raises/falls of 1A.
Ramp function
Pressing the UP/DOWN button for a time greaterthan
1 sec., the set current start to increase/decrease with
a (5A/s) ramp. If press for more then 5 ses
increase/decrease with a ramp of (10A/s).
The current ramp will end when the UP/DOWN button
previously pressed is released.
When a remote (pedal or RC-pot) device is present,
depending on welding process selected, the UP/DOWN
behavior is different.
SMAW:
In SMAW welding mode, the remote device set the
amperage setting in the whole range, bypassing the
main control knob in front User interface. In that case the
signals coming from UP/DOWN are ignored.
GTAW:
In GTAW mode of welding, the remote device set the
percentage of the main set delivered by the machine.
Regulating the main amperage, the UP/DOWN with
remote device will work as described above.
Option 50 “Job” Change memory:
By pressing torch buttons user will be allowed to change
over settings stored in memory locations from 1 to 9.
The feature is not available during welding.

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Setup menu
The setup menu contains more parameters that are
hidden from the main control panel functionality.
To enter the Setup menu:
Push and hold “SEL” and “MODE” pushbuttons
+
Keep “SEL” + “MODE” pushed until the display shows
“”
Then release the Pushbuttons
now is shown the option number “00”
01 99
Select the desired option: on the left display is shown
the option number
then press “SEL” to confirm
Now enable, disable or change the option value: on the
right display is shown the option status
Save the desired option by pressing the “SEL”
pushbutton
To exit the setup menu select the 00 option and keep
the SEL button pushed for 5 seconds until normal
operation is resumed.
List of menu options
Options Options Value
00 Exit point --
01 2-step restart On/Off
02 4-step restart On/Off
10 Spot welding On/Off
11 Spot fixed time On/Off
20 Bi-Level On/Off
30 Foot Pedal On/Off
40 Arc start strenght 1/2/3/4
50* Torch control function Off/Cur/Job
51* Limit max current Off/[Ampere]
52* Limit min current Off/[Ampere]
99 Reset to factory default
* valid only for 220TPX
To change a setting push SEL, then rotate the encoder
(Output Current Knob) to modify the setting, and push
SEL again to confirm the new value.
Error Codes and troubleshoting.
If an error occurs, turn Off the machine, wait for a few
seconds, then turn ON again. If the error remains, a
maintenance is required. Please contact the nearest
technical service center or Lincoln Electric and report the
error code displayed on the meter of the Front Panel.
Error code table
01
Input voltage too low
LED is blinking.
Indicates that an Input Undervoltage protection
is active; the Machine restarts automatically
when the Input Voltage returns in the correct
range.
02
Input voltage too high
LED is blinking.
Indicates that an Input Voltage Overvoltage
protection is active; the Machine restarts
automatically when the Input Voltage returns in
the correct range.
03
Wrong input connection
LED is blinking.
Indicates that the machine is incorrectly wired.
To restore the machine:
Turn OFF the machine and check the input
connection.
05
DC bus short circuit
LEDs blink slowly together.
Indicates that an Internal Power Circuitry fault
condition is detected.
To restore the machine:
Turn OFF then ON the Mains Switch to restart
the machine.

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18
06
Inverter voltage lock out
LEDs blink alternatively.
Indicates that an Internal Auxiliary Voltage fault
condition is detected.
To restore the machine:
Turn OFF then ON the Mains Switch to
restart the machine.
10
Fan fault
The cooling fan is blocked or faulty.
To restore the machine:
Turn OFF the Mains Switch then and check
if the fan is being blocked by something that
stops the blades.
WARNING
DO NOT OPEN THE MACHINE! Perform
the check through the air inlet louvers
placed in the machine rear side.
DO NOT INTRODUCE OBJECTS INSIDE
OF THE LOUVERS! Danger of electric
shock.
Turn ON the Mains Switch to restart the
machine and make a short weld, in order to
verify that the fan is restarted.
If the fan remains inactive a maintenance from a
Service is necessary.
Maintenance
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.
The frequency of the maintenance operations may vary
in accordance with the working environment. Any
noticeable damage should be reported immediately.
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.
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.
Customer Assistance Policy
The business of The Lincoln Electric Company is
manufacturing and selling high quality welding equipment,
consumables, and cutting equipment. Our challenge is to
meet the needs of our customers and to exceed their
expectations. On occasion, purchasers may ask Lincoln
Electric for advice or information about their use of our
products. We respond to our customers based on the best
information in our possession at that time. Lincoln Electric
is not in a position to warrant or guarantee such advice,
and assumes no liability, with respect to such information
or advice. We expressly disclaim any warranty of any
kind, including any warranty of fitness for any customer’s
particular purpose, with respect to such information or
advice. As a matter of practical consideration, we also
cannot assume any respon- sibility for updating or
correcting any such information or advice once it has
been given, nor does the provision of information or
advice create, expand or alter any warranty with respect
to the sale of our products
Lincoln Electric is a responsive manufacturer, but the
selection and use of specific products sold by Lincoln
Electric is solely within the control of, and remains the sole
responsibility of the customer. Many variables beyond the
control of Lincoln Electric affect the results obtained in
applying these types of fabrication methods and service
requirements.
Subject to Change – This information is accurate to the
best of our knowledge at the time of printing. Please refer
to www.lincolnelectric.com for any updated information.