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A -1                                                                        

SUMMARY

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64

44

20

0

600

I

2

A

U

2

V

Working 

point

Volt-ampere characteristic

The relation of the rated 

loading voltage&welding 

current

64

44

20

0

600

I

2

A

U

2

V

Working 

point

Volt-ampere characteristic

The relation of the rated 

loading voltage&welding 

current

VOLT-AMPERE 
CHARACTERISTIC 

The 

arcweld

®

 

machine has excellent volt-

ampere characteristic, refer to the 
following graph. In TIG welding, the 
relationship between rated loading voltage 
U

2

 and welding current I

is as follows: 

When I

≤600A

U

2

10

0.04 I

2

V

);

When I

2

600A

U

2

34

V

 

GENERAL INTRODUCTION 

 

The 

arcweld

®

  TIG  205  DC  is  a  new  generation  of  multi 

functional  high  quality  welding  machine.  The  power 
source  adopts  a  microcomputer  system  control,  dual 
current  loop  PWM  control,  full-bridge  high  frequency 
inverter  system.  It  has  convenient  operation,  stable 
performance, small size  and high duty cycle. The  power 
source is mainly applied to the welding of stainless steel, 
carbon steel and other metals. 
 
 

CHARACTERISTICS 

 

  To  ensure  a  high  success  rate  of  arc  starting.  The 

power  source  incorporates  a  high  voltage  and 
pulse(High  frequency)  arc  start  circuit  but  without  a 
discharge circuit so that it makes arc start easier and 
safer. Lift arc start is another option for those wishing 
to avoid electromagnetic interference. 

  Safety,  efficiency.  From  a  machine  with  protection 

features  such  as  precharge  function,  under  voltage 
protection,  over  voltage  protection,  over  heat 
protection,  over  current  protection  and  output  short 
circuit  protection.  Especially  adopted  protection 
circuit  against  electric  shock:  In  MMA  mode,  the 
machine  will  turn  off  the  main  loop  output  power 
within 2 seconds after ending welding, the advantage 
is safer operation, and saving power. 

  One machine, 4 types of welding processes: 

  MMA  

  DC TIG 

  DC TIG/PULSE 

  DC TIG/SPOT 

 

 

PWM - Pulse-Width Modulation; 

MMA - Manual Metal Arc welding;  

TIG - Tungsten Inert Gas welding. 

68

34

10

0

600

I

2

A

U

2

V

Working 

point

Volt-ampere characteristic

The relation of the rated 

loading voltage&welding 

current

 

STACKING 
 

The 

arcweld

®

  inverter  machine 

CAN’T

  be 

stacked when welding. 
 

TILTING 
 

Place  the  machine  directly  on  a  secure,  level 
surface. Do not place or operate the machines 
on  a  surface  with  an  incline  greater  than  15° 
from  horizontal.  The  machine  may  topple  over 
if this procedure is not followed. 
 
 

WELDING CAPABILITY 

 

Please  see  Technical  Specifications  in  the 
Installation  Section  for  rated  outputs  for  the  

arcweld

®

  inverter  machine.  It  is  capable  of 

higher duty cycles at lower output currents.  
If  the  duty  cycle  is  exceeded,  a  thermal 
protector  will  shut  off  the  output  until  the 
machine cools. 
 
A Duty Cycle of 60% example is: 

 

    Weld for 6 minutes                  Break for 4 minutes 
 

 

Summary of Contents for TIG 205 DC

Page 1: ... Copyright 2015 The Shanghai Lincoln Electric Company Safety Depends on You arcweld machine is designed and built with safety in mind However your overall safety can be increased by proper installation and thoughtful operation on your part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT And most importantly think before yo...

Page 2: ...rd your equipment identification information in the table below Model Name Code Serial Number can be found on the machine rating plate Model Name arcweld TIG 205 DC Code Serial number Date Where Purchased Authorized dealer s shop Declaration of conformity THE SHANGHAI LINCOLN ELECTRIC COMPANY Designed in conformance with the following norm AS 60974 1 GB15579 1 IEC 60974 1 THE SHANGHAI LINCOLN ELEC...

Page 3: ...ing and or warn them not to watch the arc nor expose themselves to the arc rays or to hot spatter or metal ELECTRIC SHOCK can kill 3 a The electrode and work or ground circuits 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 hand 3 b Insulate yourself from work and ground using dry insulation Make cer...

Page 4: ... in accordance with the national standards and the manufacturer s recommendations WELDING 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 materials from welding can easily go through small cracks and openings to adjacent areas Avoid welding nea...

Page 5: ...iii SAFETY iii ...

Page 6: ...iv SAFETY iv ...

Page 7: ...ose wishing to avoid electromagnetic interference Safety efficiency From a machine with protection features such as precharge function under voltage protection over voltage protection over heat protection over current protection and output short circuit protection Especially adopted protection circuit against electric shock In MMA mode the machine will turn off the main loop output power within 2 ...

Page 8: ...RANGE INPUT POWER Welding Mode Welding Current Range Open Circuit Voltage Welding Voltage Range 1 220V MMA 10A 170A 68V 13V VRD 20 4 V 26 8V GTAW 10A 200A 10 4 V 18V OTHER PARAMETERS Machine Power Factor Efficiency Protection Class Insulation Class arcweld TIG 205 DC 0 73 80 MMA 78 GTAW IP23S F PHYSICAL DIMENSIONS Machine Length Width Height Weight arcweld TIG 205 DC 455mm 185mm 335mm 11Kg 2 Tempe...

Page 9: ...r reference PIN DESCRIPTION WIRE 1 Switch Black 2 Switch White 3 Resistor up Green 4 Resistor middle Yellow 5 Resistor down Red For the safety and reliability of the electrical connection the terminal connection must be reliable otherwise it will cause the connection terminal damage or affect the welding performance ...

Page 10: ...me S TUP 0 10 Welding Current A I1 10 170 10 200 Base Current of I1 I2 10 90 Slop Down Time S TDOWN 0 10 Crater Current A IE 10 200 Postflow Time S 0 30 PULSE FREQUENCY Hz 0 1 20 PULSE RATIO 10 90 Spot Time S TUP 0 01 5 Hot Start Current A Is 10 200 Arc Force Current A TUP 10 200 Note The above parameters are subject to change with the improvement of machines ...

Page 11: ...fect the operation of RF controlled equipment which may result in bodily injury or damage to the equipment WARNING CAUTION INPUT CONNECTIONS ELECTRIC SHOCK can kill Have a qualified electrician install and service this equipment Disconnect input power by removing plug from receptacle before working inside machines Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharg...

Page 12: ...UTPUT 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 GTAW CAUTION STICK WELDING MMA First determine the proper electrode polarity for the electrode to be used Consult the electrode data for this information Then conne...

Page 13: ...adapter of gas hose to the gas outlet on the case front of machine to be used Also connect the trigger male connector to the female connector on the case front Figure B 3 Figure B 4 STRIKING ARC OF TIG OPERATION When the tungsten electrode touches the workpiece the short circuit current is only 10A After generating arc current can rise to the preset welding current If the tungsten electrode touche...

Page 14: ...ng 4T For 4 step operation of long welding Local Remote SWITCH Local Normal working mode Remote Using foot pedal remote woking mode ENCODER SWITCH SETTING The switch can be turned and pushed Turning for choosing program and adjust data Pushing for confirming and exit of program and data SETTING PROCEDURES 1 Start setting Push the setting switch to start the setting the default setting LEDs are on ...

Page 15: ...p time peak current slope down time crater current and postflow time PREFLOW TIME SETTING In order to protect the workpiece and the tungsten from contamination and burnout set the preflow time to let argon gas purge the air in the gas hose and TIG torch The preflow provides protection for the area where the weld pool will be formed It also improves arc stability when the welding arc is created INI...

Page 16: ...80 150 220 180 250 4 4 4 4 5 5 5 5 DEOXIDIZED COPPER DC 1 0 1 6 2 4 3 2 4 0 4 8 6 4 1 6 2 4 2 4 3 2 3 2 4 0 3 2 4 0 4 8 4 0 4 8 4 0 4 8 6 4 1 6 1 6 2 4 2 4 3 2 3 2 4 8 4 0 4 8 4 8 6 4 4 8 6 4 60 90 80 120 110 150 140 200 180 250 250 300 300 400 3 4 3 4 4 4 5 4 5 5 6 5 6 NOTE To optimize the welding process it is recommend to grind the electrode prior to welding as described in the diagram below Gr...

Page 17: ...IG PULSE OPERATION PARAMETERS SETTING Choose the DC TIG mode and Pulse welding function LIFT HF 2T 4T adjust the preflow time initial current slope up time peak current base current slope down time crater current postflow time pulse frequency pulse ratio BASE CURRENT SETTING Usually set to a small value as long as it doesn t extinguish the arc PULSE FREQUENCY SETTING The higher frequency the dense...

Page 18: ...ENT A BASE CURRENT A PULSE FRE HZ PULSE RATIO MILD STEEL 0 1 2 1 6 200 150 130 50 20 20 2 5 1 5 1 50 45 50 60 30 15 STAINLESS STEEL 0 1 2 1 6 2 0 150 150 130 130 50 20 20 20 3 1 0 8 0 8 50 35 30 30 80 17 10 83 COPPER 0 1 2 1 6 280 280 280 50 50 50 3 2 1 5 50 50 40 80 50 25 TITANIUM 0 200 100 1 30 25 MATERIAL JOINT SHAPE GAP mm PULSE CONDITION WELDING SPEED cm min PEAK CURRENT A BASE CURRENT A PULS...

Page 19: ...AND CONNECTORS C 6 4 DC TIG SPOT OPERATION PARAMETERS SETTING Choose the SPOT mode adjust the preflow time slope up time spot welding time peak current slope down time Note In this mode the machine operates in HF and 2T only ...

Page 20: ...lace the display PCB Check fan is operating normally If the fan is damaged replace immediately If the fan does not rotate after the arc welding machine is overheated check if something is blocking the fan blade if it is blocked remove obstruction If the fan still does not rotate try to spin the blade in the rotation direction of fan If the fan rotates normally the start capacitor should be replace...

Page 21: ...short arc operation Welding operation in the field should have protection from wind Inclusion slag inclusion The slag sticks to the middle layer in the welding process Under current or over speed in the welding Welding operation is not correct The welding filler does not match the work piece The groove design processing are not correct Choose the electrode with easy slag removal Ensure all slag is...

Page 22: ...sible symptoms that the machine may exhibit Find the listing that best describes the symptom that the machine is exhibiting Step 2 POSSIBLE CAUSE The third column labeled POSSIBLE CAUSE lists the obvious external possibilities that may contribute to the machine symptom Step 3 RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible Cause If you do not understand or are...

Page 23: ...wer connectors of fan motor The fan motor damaged Change fan motor 4 No no load voltage output There is trouble inside the machine Check the main circuit inside machine 5 No welding output Welding cable is not connected to the output terminals Connect the welding cable to the output terminals Welding cable is broken Repair or replace the welding cable Work cable is not connected or loose Check con...

Page 24: ...ide of workpiece Use the short arc operation 11 The alarm light is on Over heat protection Over welding current Reduce the welding current output Exceed duty cycle Reduce the duty cycle interval of weld time Undervoltage overvoltage overcurrent protection circuits work Check if the input power is correct Output is in the short circuit situation Check and fix the short circuit issue outside machine...

Page 25: ...E 1 DIAGRAM E 1 ...

Page 26: ...NOTE THE SHANGHAI LINCOLN ELECTRIC COMPANY No 195 Lane 5008 Hu Tai Rd Baoshan Shanghai PRC 201907 www lincolnelectric com cn ...

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