Würth MIG 350 SYN Quick guide
MIG/MAG/MMA WELDING
MACHINE
MIG 350 SYN /MIG 500 SYN
Art. 5952 001 350 / Art. 5952 001 500
Translation of the original operating instructions
Originalno uputstvo za upotrebu
Prevod originalnog uputstva za rad
Originalne upute za uporabu
Μετάφραση της γνήσιας οδηγίας λειτουργίας
Traducerea instrucţiunilor de exploatare originale
Перевод оригинала руководства по эксплуатации
2
GB ........................ 3 – 21
RS ........................ 22 – 41
ME ........................ 22 – 41
BiH........................ 42 – 61
GR ........................ 62 – 83
RO ........................ 84 – 103
RU ........................ 104– 125
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MIG/MAG/MMA WELDING MACHINE
MIG 350 SYN/MIG 500 SYN
General safety rules
WARNING! Read and understand all instructions. Failure to follow all instructions listed
below may result in serious injury.
CAUTION! Do not allow persons to operate or assemble this MIG 350 SYN/MIG 500 SYN
until they have read this manual and have developed a thorough understanding
of how the MIG 350 SYN/MIG 500 SYN works.
WARNING! The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions or situations that could occur. It must be understood by
the operator that common sense and caution are factors which cannot be built into this product, but must be
supplied by the operator.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY CONSIDERATIONS
1.1 Your Welding Environment
- Keep the environment you will be welding in free from ammable materials.
- Always keep a re extinguisher accessible to your welding environment.
- Always have a qualied person install and operate this equipment.
- Make sure the area is clean, dry and ventilated. Do not operate the welder in humid, wet or poorly
ventilated areas.
- Always have your welder maintained by a qualied technician in accordance with local, state and national
codes.
- Always be aware of your work environment. Be sure to keep other people, especially children, away from
you while welding.
- Keep harmful arc rays shielded from the view of others.
- Mount the welder on a secure bench or cart that will keep the welder secure and prevent it from tipping
over or falling.
1.2 Your Welder’s Condition
- Check ground cable, power cord and welding cable to be sure the insulation is not damaged.
Always replace or repair damaged components before using the welder.
- Check all components to ensure they are clean and in good operating condition before use.
1.3 Use of Your Welder
CAUTION!
Do not operate the welder if the output cable, electrode, torch, wire or wire feed system is wet. Do not
immerse them in water. These components and the welder must be completely dry before attempting
to use them.
GB
4
- Follow the instructions in this manual.
- Keep welder in the o position when not in use.
- Connect ground lead as close to the area being welded as possible to ensure a good ground.
- Do not allow any body part to come in contact with the welding wire if you are in contact with the material
being welded, ground or electrode from another welder.
- Do not weld if you are in an awkward position. Always have a secure stance while welding to prevent
accidents. Wear a safety harness if working above ground.
- Do not drape cables over or around your body.
- Wear a full coverage helmet with appropriate shade (see ANSI Z87.1 safety standard) and safety glasses
while welding.
- Wear proper gloves and protective clothing to prevent your skin from being exposed to hot metals, UV and
IR rays.
- Do not overuse or overheat your welder. Allow proper cooling time between duty cycles.
- Keep hands and ngers away from moving parts and stay away from the drive rolls.
- Do not point torch at any body part of yourself or anyone else.
- Always use this welder in the rated duty cycle to prevent excessive heat and failure.
1.4 Specic Areas of Danger, Caution or Warning
Electrical Shock
WARNING!
Electric arc welders can produce a shock that can cause injury or death. Touching
electrically live parts can cause fatal shocks and severe burns. While welding, all metal
components connected to the wire are electrically hot. Poor ground connections are a hazard, so
secure the ground lead before welding.
- Wear dry protective apparel: coat, shirt, gloves and insulated footwear.
- Insulate yourself from the work piece. Avoid contacting the work piece or ground.
- Do not attempt to repair or maintain the welder while the power is on.
- Inspect all cables and cords for any exposed wire and replace immediately if found.
- Use only recommended replacement cables and cords.
- Always attach ground clamp to the work piece or work table as close to the weld area as possible.
- Do not touch the welding wire and the ground or grounded work piece at the same time.
- Do not use a welder to thaw frozen pipes.
Fumes and Gases
WARNING!
- Fumes emitted from the welding process displace clean air and can result in injury or death.
- Do not breathe in fumes emitted by the welding process. Make sure your breathing air is clean
and safe.
- Work only in a well-ventilated area or use a ventilation device to remove welding fumes from the
environment where you will be working.
- Do not weld on coated materials (galvanized, cadmium plated or containing zinc, mercury or barium).
They will emit harmful fumes that are dangerous to breathe. If necessary use a ventilator, respirator with air
supply or remove the coating from the material in the weld area.
- The fumes emitted from some metals when heated are extremely toxic. Refer to the material safety data
sheet for the manufacturer’s instructions.
- Do not weld near materials that will emit toxic fumes when heated. Vapors from cleaners, sprays and
degreasers can be highly toxic when heated.
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UV and IR Arc Rays
DANGER!
The welding arc produces ultraviolet (UV) and infrared (IR) rays that can cause injury
to your eyes and skin. Do not look at the welding arc without proper eye protection.
- Always use a helmet that covers your full face from the neck to top of head and to the back of
each ear.
- Ensure that mask is tted with appropriate shade lens as well as with safety plate.
- Cover all bare skin areas exposed to the arc with protective clothing and shoes. Flame-retardant cloth or
leather shirts, coats, pants or coveralls are available for protection.
- Use screens or other barriers to protect other people from the arc rays emitted from your welding.
- Warn people in your welding area when you are going to strike an arc so they can protect themselves.
Fire Hazards
WARNING!
Do not weld on containers or pipes that contain or have had ammable, gaseous or liquid
combustibles in them. Welding creates sparks and heat that can ignite ammable and explosive
materials.
- Do not operate any electric arc welder in areas where ammable or explosive materials are present.
- Remove all ammable materials within 10 m of the welding arc. If removal is not possible, tightly cover them
with reproof covers.
- Take precautions to ensure that ying sparks do not cause res or explosions in hidden areas, cracks or
areas you cannot see.
- Keep a re extinguisher close in the case of re.
- Wear garments that are oil-free with no pockets or cus that will collect sparks.
- Do not have on your person any items that are combustible, such as lighters or matches.
- Keep work lead connected as close to the weld area as possible to prevent any unknown, unintended paths
of electrical current from causing electrical shock and re hazards.
- To prevent any unintended arcs, cut wire back to 6 mm stick out after welding.
Hot Materials
CAUTION!
Welded materials are hot and can cause severe burns if handled improperly.
- Do not touch welded materials with bare hands.
- Do not touch MIG gun nozzle after welding until it has had time to cool down.
Sparks/Flying Debris
CAUTION!
Welding creates hot sparks that can cause injury. Chipping slag o welds creates ying debris.
- Wear protective apparel at all times: safety shield, welder’s mask (helmet) and ear plugs to prevent spark
injuries of your eyes, face, ears and hair.
Electromagnetic Field
CAUTION!
- Electromagnetic elds can interfere with various electrical and electronic devices such as
pacemakers.
- Consult your doctor before using any electric arc welder or cutting device
- Keep people with pacemakers away from your welding area when welding.
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- Do not wrap cable around your body while welding.
- Wrap MIG gun and ground cable together whenever possible.
- Keep MIG gun and ground cables on the same side of your body.
Shielding Gas Cylinders Can Explode
WARNING!
High pressure cylinders can explode if damaged, so treat them carefully.
- Never expose cylinders to high heat, sparks, open ames, mechanical shocks or arcs.
- Do not touch cylinder with MIG gun.
- Do not weld on the cylinder.
- Always secure cylinder upright to a cart or stationary object.
- Keep cylinders away from welding or electrical circuits.
- Use the proper regulators, gas hose and ttings for the specic application.
- Do not look into the valve when opening it.
- Use protective cylinder cap whenever possible.
1.5 Proper Care, Maintenance and Repair
DANGER!
- Always have power disconnected when working on internal components.
- Do not touch or handle PC board without being properly grounded with a wrist strap. Put PC board in static
proof bag to move or ship.
- Do not put hands or ngers near moving parts such as drive rolls of fan.
MIG SYN series use and care
• Do not modify the MIG 350 SYN/MIG 500 SYN series in any way. Unauthorized modication
may impair the function and/or safety and could aect the life of the equipment. There are specic
applications for which the MIG 350 SYN/MIG 500 SYN series was designed.
• Always check of damaged or worn out parts before using the MIG 350 SYN/MIG 500
SYN series. Broken parts will aect the MIG 350 SYN/MIG 500 SYN series operation. Replace or
repair damaged or worn parts immediately.
• Store idle MIG 350 SYN/MIG 500 SYN series. When MIG 350 SYN/MIG 500 SYN series
is not in use, store it in a secure place out of the reach of children. Inspect it for good working condition
prior to storage and before re-use.
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Product Description
MIG 350 SYN/MIG 500 SYN（MMA/MIG/MAG）series IGBT inverter welding-type semi-automatic
welding machine is an inverter DC semi-automatic welding machine, which is widely used in automation, metal
furniture manufacturing, shipyard, pressure container manufacturing and steel construction industries.
This machine employs IGBT module and fast recovery diode as main parts for power transition and transfer.
MIG 350 SYN/MIG 500 SYN can according set value of the welding current Automatic adjustment the
welding voltage and also can according to different wire diameter at the same time complementary with
the corresponding waveform control circuit. it is characterized by little spatter, good welding surface, higher
efciency, the even adjustment of welding current, welding voltage and dynamic characteristic, and the
protection circuit for overheat, over current, over voltage, less voltage, phase lack, can ensure the good
adaptability and reliability of welding technique. The higher ability of power supply compensation (not less
than 15%) can give the quick response to the change of power supply, work piece, electrode, and operation.
The feature of MIG 350 SYN/MIG 500 SYN series:
IGBT inverter technology, inverter frequency is up to 20KHz.
Close loop feedback control, stable output voltage, strong ability of power supply compensation.
Continuous welding voltage adjustment, accurate match to the different welding current, Unied mode
according to the welding current automatic matching of the corresponding welding voltage.
Specially designed dynamic characteristic control circuit, little spatter, good welding surface, higher efciency.
Arc ending, ball cutting, soft wire feeding.
Applicable to CO2 and MAG or MIG welding.
Applicable to ф0.8 ～ф1.6 HO8Mn2Si、HO8MnSi、HO4MnSiAITiA、H18CrMnSiA、
HO8CrMn2SiMo、H10MnSiMo、H10MnSiMoTi and so on.
Low weight, small volume and high efciency.
Safety Operation
Operator’s Self- protection
• Please always follow the rules that conform to safety and hygiene. Wear protective garments to avoid
injuries to eyes and skins.
• Use the welding helmet to cover your head while working with the welding machine. Only by viewing
through the lter lens on the welding helmet can you watch your operation.
• Prevent the sparks and spatter from harming your body.
• Under no circumstance can you allow any part of your body to touch the welder’s output bipolarity.
• Do not operate under water or more humid place.
• Fumes and gases produced when welding are hazardous to health. Make sure to work in places where
there are exhaust or ventilation facilities to keep fumes or emissions away from the breathing zone.
• Please remember to keep arc rays away from the other nearby people when welding. This is only due to the
interference from arc rays.
Attention
• The knob on the panel can’t change or adjust with a rush otherwise it will be damaged.
• Check the connection to see if the welder input and output cables are well connected, whether the earth
(ground) connection is reliable, etc.
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• Never allow anybody else other than the operator himself to dislocate or modulate the welding machine.
• Welders have strong electromagnetism and frequency interference, so keep away people with heart pace
or the articles which can be interfered by electromagnetism and frequency.
• No using the way of knocking the torch head to remove slag.
• The torch cable cannot be pressed and its folding angle cannot be too small. The liner radius cannot less
than 150mm, or it may damage the inner cable and lead to accident.
• Never allow anybody else other than the operator himself to access the job site.
• No switching when welding.
• No touching on the electried parts such as output interface etc. when welding.
• No touching on any other electried parts while turning on power. Power must be cut off after nishing job
or leaving the site temporarily.
Safety protection for installation
• Precaution must be taken to keep the operator and the machine from the foreign materials falling from up
above.
• The dust, acid and erodible dirt in the air at the job site can not exceed the amount required by the mode
(excluding the emission from the welder).
• Inammable or explosive materials are prohibited to access the job site.
• The welder must be installed in the place where it can not be exposed to sun and rain. Also it must be
stored in less humid place with the temperature range at ﹣10 ～ 40℃.
• There should be 50㎝ space about for the welding machine to have good ventilation.
• Make sure that there is no metal-like foreign body to enter the welding machine.
• No violent vibration in the welder’s surrounding area.
• Make sure that there is no interference with the surrounding area at the installation site.
Safety Checking
Each item listed below must be carefully checked before operation:
• Make sure that the welding machine has reliable earth connection.
• Make sure that there is always sound output and input wire connection instead of exposing it outside.
Regular check needs to be conducted by the qualied personnel after the welder has been installed over a
period of six months, which involves as follows:
• Routine cleaning needs to be done to make sure that there is no abmodeal loose parts happening in the
welding machine.
• The parts installed on the panel must guarantee that the welder works properly.
• Check the welding cable to see if it can continue to be used before it is worn out.
• Replace the welder’s input cable as soon as it is found to be broken or damaged.
• Make sure whether there is enough power supply to make the welding machine work properly and the
input power must load the safety protection device.
Notice: Cut off the power supply before opening the case to check.
Please do not hesitate to contact us for technical assistance whenever you come across the problems you can
not work out or you may deem difcult to x.
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Technical Specications
Working Environment
• The surrounding temperature range: when welding:
water cooling: -10 ～﹢40℃,
during transport or in storage:﹣25 ～﹢55℃.
• Relative humidity: when at 40℃: ≤50%, when at 20℃: ≤90%.
• The dust, acid and erodible materials in the air can not exceed the amount required by the mode (apart
from the emissions from the welder). No violent vibration at the job site.
• Altitude no more than 1,000m.
• Keep from raining when it is used outdoor.
• The wind speed should no more than 1m/s around the operation places.
Requirement for Main Supply
• The voltage oscillogram should display actual sine wave,.
• The oscillation of the supplied voltage should not exceed ±15％ of the rated value.
Principle
The machine receive 3~XXXV AC through air switch (SW1), rectify the current by 3 phases rectier(BR1), get
DC through input reactor (inductance) and capacitance C5 & C9, the current will be transited to 20KHz AC
by IGBT (IGBT 1, IGBT 2), then go to middle frequency transformer (T1) , fast recovery diode (D1, D12), and
output reactor (L0). Finally the machine will have stable DC output for welding.
Main construction
MIG 350 SYN/MIG 500 SYN series IGBT welder adopts movable case structure: the upper part of front
panel includes digital current meter, voltage meter, arc ending welding current adjusting knob, arc ending
welding voltage adjusting knob, inductance control adjusting knob, welding function selector pressbutton, gas
ending arc mode selector press-button, wire diameter adjusting knob, protectd gas selector press-button, Auto
Unied function selector press-button, gas checking press-button,power indicating light, protection indicating
light, working light, The lower part of front panel includes “+” socket, “-” socket, socket of connecting cable of
wire feeder. The back panel includes power cable, ground bolt, and socket of gas heater, power switch, fan.
There are four wheels on the bottom of machine, and host ring and handle on the top of machine.
For the inside of machine, the upper part includes control transformer, 4pcs bcboard. 3phase rectier bridge,
2 IGBT, below have main transformer, the lower part includes secondary fast recovery diode, radiator and
electric reactor. The have power component of radiator is installed in the middle of machine.
The wire feeder includes motor, speed reducer, wire feeder roll, spool, gas valve, cable connector, gas hose,
welding current potentiometer, welding voltage potentiometer, spot welding switch, etc.
Welder Type Coding
• Combination of the Chinese mandarin spelling and the Arabic numerals.
• Implication of Coding:
10
MIG 350/500 SYN
Synergic
Rated welding current (A)
INVERTER CO2/MAG welding machine
Technical data
Item MIG 350 SYN MIG 500 SYN
Power voltage V 380 400 415 380 400 415
Frequency Hz 50/60
Rate input current A 25,5 41.8
Rate input capacity KVA 16,8 27.5
OCV V 70 73 75 70 73 75
Current range A 40-350 40-500
Voltage range V 16-31,5 16-39
Duty cycle % 60
Wire diameter mm 0,8-1,2 0.8-1.6
Eciency η 85%
Power factor CosΦ 0,92
Insulation class IP21S
Cooling Air Water
Dimension (L*W*H) mm 576 x 297 x 557
Weight kg 40 41
Applied Standard
The MIG 350 SYN/MIG 500 SYN series welder is produced in accordance with the following standard:
• EN 60974-1
Indicating light
Only Green light on: the machine have input the power.
The red light on: the machine on the welding.
Green light on, yellow light on: The machine is overheated. The machine will go back to working condition, if
the inner temperature of machine returns to the allowed level.
Arc ending
Usually there is a crater at the end of welding. It is due to the arc pressure and condensing shrinkage of melted
metal. The higher arc, the more crater. the arc ending function will ll up the crater by arc ending current (less
than 40%-70% of welding current) and improve the welding quality.
This manual suits for next models
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