Yeswelder CT2050 User manual

MULTl-PROCESS IGBT INVERTER WELDER & CUTTER(AC/DC TIG, AC/DC
PULSE TIG, STICK, PLASMA CUT WITH OUTER AIR AND BUILT-IN AIR)
Copyright © YesWelder
OPERATOR'S MANUAL
Please read this manual before using your new CT2050 welding and cutting machine

Congratulations on your new YesWelder product! YesWelder creates quality products at dis-
counted prices to make welding affordable to everyone. To help us serve you better and for further
questions, visit www.yeswelder.com. Thank you for your purchase.

TABLE OF CONTENTS
SAFETY ·············································································································· 01-04
SYMBOL EXPLANATION ··························································································· 05
PRODUCT OVERVIEW ······························································································· 06
FUNCTION OVERVIEW ······························································································ 07
PERFORMANCE CHARACTERISTICS ········································································· 08
INSTALLATION ········································································································ 09
ACCESSORIES ········································································································· 10
DESCRIPTION ····································································································· 11-18
OPERATION ······································································································· 19-34
CAUTION ················································································································ 35
BASIC KNOWLEDGE OF WELDING ········································································ 36-43
OPTIONAL ACCESS OPERATION DESCRIPTION ······························································· 43-44
MAINTENANCE ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙·······∙∙∙∙∙∙ 45
TROUBLESHOOTING ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙······∙∙∙∙ 46-51
WIRING DIAGRAM ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙······∙∙∙∙∙∙∙ 52

01
SAFETY
THANK YOU FOR SELECTING
A QUALITY PRODUCT BY
YESWELDER.
When this equipment is shipped, the title passes to the pur-
chaser
upon receipt by the carrier. Consequently, claims for material
damaged in shipment must be filed by the purchaser against
the transportation company when the shipment is received.
PLEASE EXAMINE THE PACKING BOX AND
EQUIPMENT FOR DAMAGE IMMEDIATELY
SAFETY DEPENDS ON YOU
YESWELDER arc welding and cutting equipment are designed
and built with safety. However, your overall safety can be in-
creased by proper installation and thoughtful operation on your
part. DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIP-
MENT WITHOUT READING THIS MANUAL AND THE
SAFETY PRECAUTIONS CONTAINED THROUGHOUT. And
most importantly, think before you act and be careful.
WARNING
CAUTION
This statement appears where the information must be followed
precisely to avoid serious personal injury or loss of life.
This statement appears where the information must be followed
to avoid minor personal injury or damage to this equipment.
KEEP YOUR HEAD OUT OF THE FUMES.
DON’T get too close to the arc.
Use corrective lenses if neces-
sary to stay a reasonable dis-
tance from the arc.
READ and obey the Safety
Data Sheet (SDS) and the warn-
ing label on all welding materi-
als containers.
USE ENOUGH VENTILATION
or exhaust at the arc, or both, to
keep the fumes and gases from your breathing zone and the
general area.
IN A LARGE ROOM OR OUTDOORS, natural ventilation may
be adequate if you keep your head out of the fumes (See be-
low).
USE NATURAL DRAFTS or fans to keep the fumes away from
your face.
If you de develop unusual symptoms, see your supervisor. Per-
haps the welding atmosphere and ventilation system should be
checked.
WEAR CORRECT EYE, EAR &
BODY PROTECTION
PROTECT your eyes and face with welding hel-
met properly fitted and with proper grade of filter
plate (See ANSI Z49.1).
PROTECT your body from welding spatter and
arc flash with protective clothing including
woolen clothing, flame-proof apron and gloves,
leather leggings, and high boots.
PROTECT others from splatter, flash, and glare
with protective screens or barriers.
IN SOME AREAS, protection from noise may be
SPECIAL SITUATIONS
DO NOT WELD OR CUT containers or materials which previ-
ously had been in contact with hazardous substances unless
they are properly cleaned.
DO NOT WELD OR CUT painted or plated parts unless special
precautions with ventilation have been taken. They can release
highly toxic fumes or gases.
Additional precautionary measures:
PROTECT compressed gas cylinders from excessive heat, me-
chanical shocks, and arcs; fasten cylinders so they cannot fall.
BE SURE cylinders are never grounded or part of an electrical
circuit.
REMOVE all potential fire hazards from welding area.
ALWAYS HAVE FIRE FIGHTING EQUIPMENT READY FOR
IMMEDIATE USE AND KNOW HOW TO USE IT.
appropriate.
BE SURE protective equipment is in good condition. Also, wear
safety glasses in work area
AT ALL TIMES.

SAFETY
02
Read and understand the following safety highlights. For addi-
tional safety information, it is strongly recommended you down-
load free PDF of Standard ANSI Z49.1 from the American Weld-
ing Society.
https://www.aws.org/library/doclib/AWS-Z49-2021.pdf
WARNINGS
CALIFORNIA PROPOSITION 65 WARNINGS
WARNING: Breathing diesel engine exhaust ex-
poses you to chemicals known to the State of Cal-
ifornia to cause cancer and birth defects, or
other reproductive harm.
ŸAlways start and operate the engine in a well-ventilated
area.
ŸIf in an exposed area, vent the exhaust to the outside.
ŸDo not modify or tamper with the exhaust system.
ŸDo not idle the engine except as necessary.
For more information go to
www.P65 warnings.ca.gov/diesel
WARNING: This product, when used for welding or cutting,
produces fumes or gases which contain chemicals known
to the State of California to cause birth defects and, in
some cases, cancer. (California Health & Safety Code §
25249.5 et seq.)
WARNING: Cancer and Reproductive Harm
www.P65warnings.ca.gov
ARC WELDING CAN BE HAZARDOUS. PROTECT
YOURSELF AND OTHERS FROM POSSIBLE SERIOUS
INJURY OR DEATH. KEEP CHILDREN AWAY.
PACEMAKER WEARERS SHOULD CONSULT WITH
THEIR DOCTOR BEFORE OPERATING.
1.a. Turn the engine off before troubleshoot-
ing and maintenance work unless the
maintenance work requires it to be run-
ning.
1.b. Operate engines in open, well-
ventilated areas or vent the engine ex-
haust fumes outdoors.
1.c. Do not add the fuel near an open flame
welding arc or when the engine is run-
BE SURE THAT ALL INSTALLATION, OPERATION,
MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
FOR ENGINE POWERED
EQUIPMENT.
ning. Stop the engine and allow it to cool before refueling
to prevent spilled fuel from vaporizing on contact with hot
engine parts and igniting. Do not spill fuel when filling tank.
If fuel is spilled, wipe it up and do not start engine until
fumes have been eliminated.
1.d. Keep all equipment safety guards, covers and devices in
position and in good repair. Keep hands,
hair, clothing and tools away from V-
belts, gears, fans and all other moving
parts when starting, operating or repair-
ing equipment.
1.e. In some cases it may be necessary to remove safety
guards to perform required maintenance. Remove guards
only when necessary and replace them when the mainte-
nance requiring their removal is complete. Always use the
greatest care when working near moving parts.
1.f. Do not put your hands near the engine fan. Do not attempt
to override the governor or idler by pushing on the throttle
control rods while the engine is running.
1.g. To prevent accidentally starting gasoline engines while turn-
ELECTRIC AND
MAGNETIC FIELDS MAY
BE DANGEROUS
2.a. Electric current flowing through any conductor causes lo-
calized Electric and Magnetic Fields (EMF). Welding cur-
rent creates EMF fields around welding cables and welding
machines
2.b. EMF fields may interfere with some pacemakers, and weld-
ers having a pacemaker should consult their physician be-
fore welding.
2.c. Exposure to EMF fields in welding may have other health
effects which are now not known.
2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:
2.d.1. Route the electrode and work cables together - Se-
cure them with tape when possible.
2.d.2. Never coil the electrode lead around your body.
2.d.3. Do not place your body between the electrode and
workcables. If the electrode cable is on your right side,
the work cable should also be on your right side.
2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
2.d.5. Do not work next to welding power source.
ing the engine or welding generator dur-
ing maintenance work, disconnect the
spark plug wires, distributor cap or mag-
neto wire as appropriate.
1.h. To avoid scalding, do not remove the radi-
ator pressure cap when the engine is
hot.

SAFETY
ELECTRIC SHOCK
CAN KILL.
3.a. The electrode and work (or ground) cir-
cuits are electrically “hot” when the
welder is on. Do not touch these “hot”
parts with your bare skin or wet clothing.
Wear dry, hole-free gloves to insulate hands.
3.b. Insulate yourself from work and ground using dry insula-
tion. Make certain the insulation is large enough to cover
your full area of physical contact with work and ground.
In addition to the normal safety precautions, if welding
must be performed under electrically hazardous con-
ditions (in damp locations or while wearing wet cloth-
ing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable
or accidental contact with the workpiece or ground)
use the following equipment:
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
• AC Welder with Reduced Voltage Control.
3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.
3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.
3.e. Ground the work or metal to be welded to a good electrical
(earth) ground.
3.f. Maintain the electrode stringer, work clamp, welding cable
and welding machine in good, safe operating condition. Re-
place damaged insulation.
3.g. Never dip the electrode in water for cooling.
3.h. Never simultaneously touch electrically “hot” parts of elec-
trode stringers connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.
3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.
3.j. Also see It ems 6.c. and 8.
4.a. Use a shield with the proper filter and cover plates to pro-
tect your eyes from sparks and the rays of the arc when
welding or observing open arc welding. Headshield and fil-
ter lens should conform to ANSI Z87. I standards.
4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.
4.c. Protect other nearby personnel with suitable, non-
flammable screening and/or warn them not to watch the
arc nor expose themselves to the arc rays or to hot spatter
or metal.
ARC RAYS CAN BURN.
FUMES AND GASES
CAN BE DANGEROUS.
5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing
these fumes and gases. When welding,
keep your head out of the fume. Use enough ventilation
and/or exhaust at the arc to keep fumes and gases away
from the breathing zone. When welding hardfacing (see
instructions on container or SDS) or on lead or cad-
mium plated steel and other metals or coatings which
produce highly toxic fumes, keep exposure as low as
possible and within applicable OSHA PEL and ACGIH
TLV limits using local exhaust or mechanical ventila-
tion unless exposure assessments indicate otherwise.
In confined spaces or in some circumstances, out-
doors, a respirator may also be required. Additional
precautions are also required when welding on galva-
nized steel.
5. b. The operation of welding fume control equipment is af-
fected by various factors including proper use and position-
ing of the equipment, maintenance of the equipment and
the specific welding procedure and application involved.
Worker exposure level should be checked upon installation
and periodically thereafter to be certain it is within applica-
ble OSHA PEL and ACGIH TLV limits.
5.c. Do not weld in locations near chlorinated hydrocarbon va-
pors coming from degreasing, cleaning or spraying opera-
tions. The heat and rays of the arc can react with solvent
vapors to form phosgene, a highly toxic gas, and other irri-
tating products.
5.d. Shielding gases used for arc welding can displace air and
cause injury or death. Always use enough ventilation, espe-
cially in confined areas, to insure breathing air is safe.
5.e. Read and understand the manufacturer’s instructions for
this equipment and the consumables to be used, including
the Safety Data Sheet (SDS) and follow your employer’s
safety practices. SDS forms are available from your weld-
ing distributor or from the manufacturer.
5.f. Also see item 1.b.
03

SAFETY
WELDING AND CUTTING
SPARKS CAN CAUSE
FIRE OR EXPLOSION.
6.a. Remove fire hazards from the welding area. If this is not
possible, cover them to prevent the welding sparks from
starting a fire. Remember that welding sparks and hot ma-
terials from welding can easily go through small cracks
and openings to adjacent areas. Avoid welding near hy-
draulic lines. Have a fire extinguisher readily available.
6.b. Where compressed gases are to be used at the job site,
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting” (ANSI
Standard Z49.1) and the operating information for the
equipment being used.
6.c. When not welding, make certain no part of the electrode cir-
cuit is touching the work or ground. Accidental contact can
cause overheating and create a fire hazard.
6.d. Do not heat, cut or weld tanks, drums or containers until
the proper steps have been taken to insure that such pro-
cedures will not cause flammable or toxic vapors from sub-
stances inside. They can cause an explosion even though
they have been “cleaned”. For information, purchase “Rec-
ommended Safe Practices for the Preparation for Welding
and Cutting of Containers and Piping That Have Held Haz-
ardous Substances”, AWS F4.1 from the American Weld-
ing Society (see address above).
6.e. Vent hollow castings or containers before heating, cutting
or welding. They may explode.
6.f. Sparks and spatter are thrown from the welding arc. Wear
oil free protective garments such as leather gloves, heavy
shirt, cuffless trousers, high shoes and a cap over your
hair. Wear ear plugs when welding out of position or in con-
fined places. Always wear safety glasses with side shields
when in a welding area.
6.g. Connect the work cable to the work as close to the welding
area as practical. Work cables connected to the building
framework or other locations away from the welding area
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate cir-
cuits. This can create fire hazards or overheat lifting chains
or cables until they fail.
6.h. Also see item 1.c.
6.I. Read and follow NFPA 51B “Standard for Fire Prevention
During Welding, Cutting and Other Hot Work”, available
from NFPA, 1 Batterymarch Park, PO box 9101, Quincy,
MA 022690-9101.
6.j. Do not use a welding power source for pipe thawing.
CYLINDER MAY EXPLODE IF
DAMAGED.
7.a. Use only compressed gas cylinders con-
taining the correct shielding gas for the
process used and properly operating reg-
ulators designed for the gas and pres-
sure used. All hoses, fittings, etc. should
be suitable for the application and main-
tained in good condition.
7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.
7.c. Cylinders should be located:
•Away from areas where they may be struck or subjected to
physical damage.
•A safe distance from arc welding or cutting operations and
any other source of heat, sparks, or flame.
7.d. Never allow the electrode, electrode stringer or any other
electrically “hot” parts to touch a cylinder.
7.e. Keep your head and face away from the cylinder valve out-
let when opening the cylinder valve.
7.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.
7.g. Read and follow the instructions on compressed gas cylin-
ders, associated equipment, and CGA publication P-l, “Pre-
cautions for Safe Handling of Compressed Gases in Cylin-
ders,” available from the Compressed Gas Association,
14501 George Carter Way Chantilly, VA 20151.
FOR ELECTRICALLY
POWERED EQUIPMENT.
8.a. Turn off the power using the disconnect
switch at the fuse box before working on
the equipment.
8.b. Install equipment in accordance with the U.S. National Elec-
trical Code, all local codes and the manufacturer’s recom-
mendations.
8.c. Ground the equipment following the U.S. National Electri-
cal Code and the manufacturer’s recommendations.
04

SYMBOL EXPLANATION
Cautions in Operation
Items Need Special Instruction
It’s forbidden to dispose electric waste to-
gether with other ordinary waste. Please
take care of our environment.
SMART Function
Input Voltage
Remote Control Mode
or Torch Control Mode
AC TIG Mode
DC TIG Mode
Stick Mode
CUT-Outer Air
Power ON
Power OFF
Arc force current
Ground Connection
Current
Frequency
Percentage
Time
Pulse Frequency
Width of Pulse Peak
Gas Parameters of WeldingCUT-Built-in Compressor Air
S
%
Hz
A
WARNING
05

PRODUCT OVERVIEW
Ct2050 is a numerical controlled inverter plasma CUT/TIG ACDC/Stick welder of advanced technologies, multiple functions, and
excellent performance. Equipped with AC/DC TIG, AC/DC Pulse TIG, Stick Welding, Plasma Cutting with outer air or with buit-in
compressor air at the same time, it's widely applied for various metal materials' delicate welding. The integration of a unique elec-
tric structure with an air channel design in the CT2050 series can speed up the heat dissipation of the power device, so that to im-
prove the duty cycle. The unique air channel heat dissipation efficiency can effectively prevent damage to the power devices and
control circuits resulting from the dust absorbed by the fan, and greatly improve the welder's reliability thereby.
The overall streamlined design with a big arc transition perfectly integrates front and back panels, forming the most coherent and
natural joints of the machine. It's a compact and versatile machine. Designed to break through the welding barriers and unlock
new levels of skill, power, and creativity, it is suitable for both heavy industries and open fields. CT2050 is a good choice for expe-
rienced welder or beginners, as it could meet the requirements for various industries and fields.
06

FUNCTION OVERVIEW
Multi Functions Design
ŸMultiple welding process: AC/DC TIG, AC/DC Pulse TIG, Stick Welding, Plasma Cutting with outer air or with built-in compres-
sor air.
ŸRemote control available: able to use pedal remoter and welding torch to torch on/off and welding amperage.
ŸReal-time display of welding current: the convenient display of welding output status.
ŸAdjustable hot start: easier and more reliable stick arc start.
ŸVRD: to ensure the operator's safety while in idle mode.
ŸAdjustable arc force current: ensure well operation while under long-distance welding.
ŸHF arc start (TIG): built-in pressurized arc ignition circuit; support HF pilot TIG arc ignition.
ŸNo-HF pilot arc start (CUT): support no-HF pilot arc ignition when going plasma cutting.
ŸIntelligent fan: automatic cooling fan which works though temperature control and prolong the fan's lifespan.
ŸAuto saving and recovery of welding parameters: the welder will auto save the parameters for sudden power off, and will re-
covery Iast time's welding parameters when power on.
ŸPFC Technology: input voltage AC96~265V, improve the electric energy efficiency and decrease the loss.
ŸOuter compressor compatible: it could connect to outside compressor air to do perfect plasma cutting.
ŸBuilt-in compressor available: equipped with built-in compressor, suitable for outdoor projects and for places not have access to
the an air compressor.
07

PERFORMANCE CHARACTERISTICS
IGBT inverter technology
ŸThe adoption of 42 kHz inverting frequency and strong shock resistance IGBT for the main loop contributes to smaller welder size
and lighter weight, and higher reliability.
ŸA great reduction in copper and core loss greatly enhances welding efficiency and saves energy.
ŸSwitching frequency is beyond audio frequency, which almost eliminates noise pollution.
Cutting-edge control technique
ŸAdvanced control scheme craters for various welding process requirements and greatly enhances welder performances.
ŸNew control technology contributes to smaller voltage spike which is caused by second inversion, thus higher reliability and effi-
ciency as well as smaller size.
ŸThe adoption of MCU intelligent digital control technology and software digital controlled core welding functions brings upgraded
performances when compared with traditional welders.
ŸApplicable to various acid and basic electrodes.
Nice shape and structure design
ŸStreamline design for the front and rear panels to achieve a better integral shape.
ŸPanels made of high-intensity engineering plastics guarantee high work efficiency in case of strong impact and drop or other harsh
conditions.
ŸExcellent insulating property.
ŸFine anti-static and anti-corrosion performance.
Optimized auto protection
ŸThe machine has an optimized auto protection function. When there is large-scale voltage fluctuation, the welder will shut off auto-
matically and display the failure information; the welder will restart when the network voltage is stable. The welder will shut off in
case of over-heat, or other abnormalities, and display the according failure information. Multi protections largely prolong the
welder's lifespan.
Excellent consistency and performance
ŸThis product adopts intelligent digital control technology which is not sensitive to component parameters' change; certain compo-
nents' changes won't affect the welder's performance. It's also insensitive to temperature and humidity. All the above contribute to
better consistency and performance when compared with traditional welders.
Friendly interaction interface
ŸThis welder adopts an international diagram form display, which is easy to understand and convenient to achieve accurate opera-
tion for different types of users.
Capable of high quality Stick welding
ŸThe adoption of an excellent control algorithm largely improves Stick welding performance, bringing easy arc start, stable current,
minimum spatter, no sticking, good shaping, and self-adaption to different cable lengths and cross-sections.
Capable of highly demanding argon arc welding
ŸOptimized digital CC adjustment technology guarantees low noise and stable arc; meanwhile, accurate control technology pro-
vides convenient operation for welding current. This welder is capable of 2T/4T to meet various welding process demands.
Remote control is available
ŸThis welder is capable of pedal/torch remote control, allowing the operator's control on real-time welding current even further than
10m.
Non-volatile Memory
ŸThe welding parameters will be automatically memorized when power off. And the latest welding parameter could be restored
when power on.
08

TECHNICAL SPECIFICATIONS: CT2050
INSTALLATION
09
Standard Voltage/Frequency
Single Phase 96-265V, 50/60Hz
Input Current
I1 max=47A, I1 eff=36A
I1 max=31A, I1 eff=24A
INPUT-SINGLEPHASEONLY
RATEDOUTPUT-DCONLY
OUTPUT RANGE
OTHER PARAMETERS
PHYSICALDIMENSIONS
TEMPERATURERANGE
Voltage
220V
110V
Mode
CUT
TIG
STICK
CUT
TIG
STICK
Duty Cycle
100%
100%
100%
100%
100%
100%
Current
45A
200A
25A
160A
Voltsat
Rated Current
98V
18V
Voltage Mode Open Circuit
Voltage
Welding
Current Range
Welding
VoltageRange
Machine Power
Factor Efficiency Protection
Class
Insulation
Class
0.9988 85% IP21S FCT2050
Machine Length Width Height Weight
550mm 360mm 445mm 60lbs/27.2Kg
OperatingTemperatureRange
-20°C~+50°C(-4°F~122°F)
StorageTemperatureRange
-20°C~+50°C(-4°F~122°F)
CT2050
160A
200A
28V
90V
16.4V
26.4V
220V
110V
CUT
TIG
STICK
CUT
TIG
STICK
312V
68V(with
VRD 7V)
68V
68V
68V(with
VRD 7V)
12~25A
10~160A
5~160A
12~45A
10~200A
5~200A 10.2~18V
20.4~28V
84.8~98V
10.2~16.4V
20.4~26.4V
84.8~90V
312V
Read the entire installation section before you start
the installation.
INSTALLATION
WARNIG
ELECTRIC SHOCK can kill.
ŸOnly qualified personnel should per-
form this installation.
ŸOnly personnel reading and under-
standing the CT2050 Operator's Man-
ual should install and operate this
equipment.
ŸThe machine must be plugged into a grounded receptacle
per national, local, or other applicable electrical codes.
ŸThe CT2050 power switch should be in the OFF("O") posi-
tion when installing the work cable and gun and connect-
ing the power cord to input power.
SELECT SUITABLE LOCATION
STACKING
Locate the CT2050 in a dry place with free clean air circulation
to minimize the chance of dirt accumulation that can block air
passages and cause overheating.
Ct2050 cannot be stacked.
TILTING
The machine should be placed on a secure, level surface or a
recommended cart. The equipment may topple over if this re-
quirement is not followed.

ACCESSORIES
1. 13' M-IPL-50 Non-HF Cutting Torch (M16*1.5 Gas&Electric Connector)
2. 13' M-WP-26 TIG Torch with Amperage Control (KDP35-50 Electric
Connector, M16*1.5 Gas Connector, 5-pin Control Cable)
3. 8' Gas Hose with 5/8"-18 RH
4. 13' Air Tube
5. Air Compressor Regulator Filter
6. 220V->110V Power Adapter
7. 10' Work Clamp&Cable
8. 10' Electrode Holder&Cable
9. Manual
21
3
4
5
6
8
7
10
9

DESCRIPTION
Panel Controls
1. Operation Panel: Permits function selection and parameters
setting
2. Positive Output Receptacle: Permits attaching a work lead
3. Torch Connector: Permits attaching the TIG gas connec-
tor/CUT torch
4. Pilot Arc Connector: Permits connecting pilot arc wire of
CUT torch
5. 5-pin Trigger Receptacle: Permits triggering the torch to
control welding on/off and adjust welding amperage. Connect
the 5-pin connector present on the welding torch to the recepta-
cle.
6. Negative Output Receptacle: Permits attaching an elec-
trode holder or TIG welding torch electric connector.
7. Value Adjusting/Function Knob: Permits selecting and ad-
justing parameters.
18
9
7
2 3 4 5 6
8. Trademark
9. Handle
10. CNC Arc Voltage Connector
11. CNC Signal Control Connector
12. Intelligent Fan with Temperature Control
13. Input Power Cord
14. Outlet-Air Out
15. Cooling Fan
16. Inlet-Air In
17. Inlet-Argon gas
18. Power switch
10
11
13
12
18
16 17 15
14
11

DESCRIPTION
Panel Description
1
2
3
45
6
7
8
9
10
Fig 1 Panel Function
1. Weld Process Selection
2. Torch Operation Selection
3. Digital Display
4. Pulse Indicator
5. VRD Indicator
6. Input Voltage
7. Welding Angle Selection
8. Al Thickness
9. Smart Mode Selection
10. Parameter Indicators
1
2345
1. Parameter Value or Error Code
2. Current Indicator
3. Time Indicator
4. AC Balance (Clearance Width)
or Duty Cycle (Pulse Width)
5. AC Frequency or Pulse Frequency
1
2
1. Input Voltage
2. Power LED
Fig 2 Digital Display Fig 3 Input Voltage
1
2
3
4
5
6
7
1. Welding Process Selection
2. Outer Air LED
3. CUT-Built-in Compressor Air
4. CUT-Outer Air
5. Stick
6. DC TIG
7. AC TIG
Fig 4 Weld Mode Select
1
2
3
4
1. Torch Operation Selection
2. 2T
3. 4T
4. Remote-Torch Remoter
or Foot Pedal
Fig 5 Torch Mode Select
12

Fig 6 SMART Selection-Angle
1. Welding Angle Selection
2. Flat
3. Vertical
4. Overhead
DESCRIPTION
1
2
3
4
Fig 7 SMART Selection-Thickness
1. Aluminum Thickness-Selectection
2. 18GA 1.0mm
3. 16GA 1.3mm
4. 14GA 1.6mm
5. 1/8" 3.2mm
6. 3/16" 5.0mm
1
2
3
4
5
6
1
2
1. SMART Button
2. SMART LED
Fig 8 SMART Selection
1
2
3
4 5
6
7
8
9 10
11 12
13 14
1. Pre-flow
2. Initial Current
3. Upslope Time
4. Peak Current(Output Current)
5. Pulse Frequency
6. Downslope Time
7. Crater Current
8. Post Flow
9. Arc Force Current
10. Hot Start Current
11. Pulse Width (Duty Cycle)
12. Background Current
13. AC Frequency
14. Clearance Width/AC Balance
Fig 9 Parameters Select
13

DESCRIPTION
Keys Operation Description
Press when there is no load; can choose a different welding mode based on actual demands; this button is invalid in the middle
of welding; the mode switch will roll when the welder goes back to no-load status. Please see the description below:
AC TIG DC TIG Stick CUT-Outer Air CUT-Built-in
Compressor Air
Fig 10 Welding Modes Selection
Welding Torch Operation Selection
When under TIG mode or digital controlled torch mode, press to select different torch control modes based on actual welding de-
mands. This button is invalid in the middle of welding; the mode switch will roll when the welder is back to no-load status. Please
see the description below:
2T 4T Remote Control
Fig 12 Torch Operation Selection
Welding Process Selection
14
Press and hold the Value Knob for 3s to turn Pulse on/off.
Operation Modes
Mode No.
Operation
Torch Trigger Operation and Current Curve
1
Standard 2T mode:
1. Push the torch trigger: arc is ignited and current rises gradually.
2. Release the torch trigger: current drops gradually, and arc
stops.
If push the torch trigger again before arc stops, the current will
gradually rise again, and then turn to 1.
2
Standard 4T mode:
1. Push the torch trigger: arc is ignited and current reaches the
initial value.
2. Release it: current rises gradually .to the set amperage/voltage
3. Push it again: current drops to pilot arc current value.
4. Release it: arc stops.
Torch Operation Selection 2T/4T
Note: With Foot Pedal attached, TIG Torch Trigger will not turn on welding arc. Amperage is controlled exclusively with the
Foot Pedal.
Fig 11 Torch Operation Selection

DESCRIPTION
When under SMART mode, one can press to select different welding angles according to actual application:
Flat Welding Angle Vertical Welding Angle Overhead Welding Angle
When under SMART mode, one can press to select aluminum plate thickness
18GA 1.0mm 16GA 1.3mm 16GA 1.6mm 1/8" 3.2mm 3/16" 5.0mm
15
SMART Mode Selection
When under AC/AC, Pulse TIG mode, press to select "SMART" mode. Please see below:
AC TIG
SMART
Fig 13 Operation Selection
AC TIG
SMART
AC TIG
SMART
SMART OFF SMART ON

Welding Parameters Setting
Press rotary encoder potentiometer to adjust welding parameters based on actual demands. The parameters’ setting can be done
during no load or in the middle of welding without affecting welding.
Welding
Mode
Torch Switch
Mode
Pre-flow
Initial
Current
Up Slope
Time
Peak Current
Background
Current
Pulse
Frequency
Pulse Width
Stick
NO
×
×
×
●
×
×
×
DC TIG
2T
●
●
●
●
×
×
×
4T
●
●
●
●
×
×
×
Foot Pedal
●
●
●
●
×
×
×
DC Pulse
TIG
2T
●
●
●
●
●
●
●
4T
●
●
●
●
●
●
●
Foot Pedal
●
●
●
●
●
●
●
AC TIG
2T
●
●
●
●
×
×
×
4T
●
●
●
●
×
×
×
Foot Pedal
●
●
●
●
×
×
×
AC Pulse
TIG
2T
●
●
●
●
×
●
●
4T
●
●
●
●
×
●
●
Foot Pedal
●
●
●
●
●
●
●
CUT-Built-in
compressor
Air
2T
●
●
●
●
×
×
×
4T
●
●
●
●
×
×
×
CUT-Outer
Air
2T
●
●
●
●
×
×
×
4T
●
●
●
●
×
×
×
Adjusting Direction
DESCRIPTION
16

Welding Mode
Torch Switch
Mode
Arc Force
Current
Down Slope
Time
Crater Current
Post-flow
AC Frequency
Clearance
Width
Stick
NO
●
×
×
×
×
×
DC TIG
2T
×
●
●
●
×
×
4T
×
●
●
●
×
×
Foot Pedal
×
●
●
●
×
×
DC Pulse TIG
2T
×
●
●
●
×
×
4T
×
●
●
●
×
×
Foot Pedal
×
●
●
●
×
×
AC TIG
2T
×
●
●
●
●
●
4T
×
●
●
●
●
●
Foot Pedal
×
●
●
●
●
●
AC Pulse TIG
2T
×
●
●
●
●
●
4T
×
●
●
●
●
●
Foot Pedal
×
●
●
●
●
●
CUT-Built in
compressor Air
2T
×
●
●
●
×
×
4T
×
●
●
●
×
×
CUT-Outside
Air
2T
×
●
●
●
×
×
4T
×
●
●
●
×
×
Adjusting Direction
DESCRIPTION
Note:
● means available, × means null.
17
On the machine, there is a plate that includes all the operating specifications for your new unit. The duty cycle rating of a welder de-
fines how long the operator can weld and how long the welder must rest and be cooled. Duty cycle is expressed as a percentage of
1 O minutes and represents the maximum welding time allowed. The balance of the 1 0-minute cycle is required for cooling For ex-
ample, a welder has a duty cycle rating of 30% at the rated output of 90A. With that machine, you can weld at 90 A output for three
(3) minutes out of every 10 min with the remaining seven (7) minutes required for cooling The duty cycle of your new welder can be
found on the data plate affixed to the machine. The picture below shows that the "X" row lists duty cycle percentages while the "I2"
row lists the amp draw corresponding to the duty cycle. Various duty cycles at other amperage are listed on your data plate.
Performance Data Plate And Duty Cycle