CebraMig @400P
 Notice : Machine export to Europe |
This product does not meet the requirements specified in the EC Directives which are the EU safety
ordinance that was enforced starting on January 1, 1995. Please make sure that this product is not
allowed to bring into the EU after January 1, 1995 as it 1s.
The same restriction is also applied to any country which has signed the EEA accord.
Please ask us before attempting to relocate or resell this product to or in any EU member country or
any other country which has signed the EEA accord.
10.
11.
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13.
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TABLE OF CONTENTS
SAFETY INFORMATION... ee, 2
ARC WELDING SAFETY PRECAUTIONS... coir cv eee 2
GENERAL NOTICE OF OPERATION ee R EEK RRER RR AREE 8
STANDARD COMPOSITION AND ACCESS Seren eee 9
FUNCTION OF EQUIPMENT cea, 11
NECESSARY POWER SOURCE EQUIPMENT... eres 12
TRANSPORT AND INSTALLATION... reee ere 13
CONNECTION PROCEDURE AND GROUND FOR SAFETY USE.............. 15
WELDING PREPARATION... eee ee 18
OPERATION. LL ee eee eee, 28
APPLIED FUNCTION. cc eae eee, 46
MAINTENANCE AND TROUBLESHOOTING...............oooi 51
PARTS LIST Lo ee eee 59
SPECIFICATIONS......L Lee sa era r re nana ea era r eee area san aan ana aa eee nanas a een eee 61
CobraMig400P Owners Manual - Page 1
1. SAFETY INFORMATION
The following safety alert symbols and signal words are used throughout this manual to identify
various hazards and special instructions.
A WARNING gives information regarding possible persona! injury
A,
+= WARNING or {oss of life.
A CAUTION refers to minor persona! injury or possible equipment
1 CAUTION damage.
2. ARC WELDING SAFETY PRECAUTIONS
A
TN WARNING
ARC WELDING can be hazardous.
1. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
Be sure to:
- Keep children away.
* Keep pacemaker wearers away untii consulting a doctor.
2. Read and understand the summarized safety information given below and the original
principal information that will be found in the PRINCIPAL SAFETY STANDARDS.
3. Have only trained and experienced persons perform instaliation, operation, and
maintenance of this equipment.
4. Use only well maintained equipment. Repair or replace damaged parts at once.
ARC WELDING is safe when precautions are taken.
CobraMig400P Owner's Manual - Page 2
2. ARC WELDING SAFETY PRECAUTIONS (continued)
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shocks or severe burns. The electrode and work
circuits are electrically live whenever the output is on. The power line and internal circuits of
this equipment are also live when the line disconnect switch is on. When arc welding al! metal
components in the torch and work circuits are electrically live.
wna
on
Do not touch live electrical parts.
Wear dry insulating gloves and other body protection that are free of holes.
Insulate yourself from work and ground using dry insulating mats or covers.
Be sure to disconnect the line disconnect switch before installing, changing torch parts
or maintaining this equipment.
Properly install and ground this equipment according to its Owner’s Manual and national,
state, and focal codes,
Keep all paneis and covers of this equipment securely in piace.
Do not use worn, damaged, undersized, or poorly spliced cables.
Do not touch electrode and any metal object if POWER switch is ON.
Do not wrap cables around your body.
0. Turn off POWER switch when not in use.
ARC RAYS can burn eyes and skin: FLYING SPARKS AND HOT METAL can
cause injury. NOISE can damage hearing.
Arc rays from the welding process produce intense heat and strong ultraviolet rays that can
burn eyes and skin.
Noise from some arc welding can damage hearing.
1.
Wear face shield with a proper shade of filter (See ANSI Z 49.1 listed in PRINCIPAL
SAFETY STANDARDS) to protect your face and eyes when welding or watching a weider
work.
Wear approved safety goggles. Side shields recommended.
Use protective screens or barriers to protect others from fiash and glare: warn others not
to look at the arc.
Wear protective clothing made from durable, flame-resistant material {wool and ieather)
and foot protection.
Use approved earpiugs or earmuffs if noise level is high.
Chipping and grinding can cause flying metal. As welds cooi, they can throw off slag.
Wear approved face shield or safety goggles. Side shields recommended.
Wear proper body protection to protect skin.
CobraMig400P Owner's Manual - Page 3
2. ARC WELDING SAFETY PRECAUTIONS (continued)
Fa
+ > )
)
Sparks and spatter fly off from the welding arc. The flying sparks and hot metal, spatter, hot
base metal, and hot equipment can cause fire and explosion. Accidental contact of electrode or
welding wire to metal object can cause sparks, overheating, or fire.
1. Protect yourseif and others from flying sparks and hot metals,
2. Do not weld where flying sparks can strike flammable material.
3. Remove all flammables within 10m (33ft) of the welding arc. If this is not possibie, tightly,
cover them with approved covers.
4. Be alert that welding sparks and hot metals from welding can easily pass through cracks
and openings into adjacent areas.
5. Watch for fire, and keep a fire extinguisher nearby.
6. Be aware that welding on a ceiling, floor, bulkhead, or partition can ignite a hidden fire.
7. Do not weld on ciosed containers such as tanks or drums.
8. Connect power cable for base metal as close to the welding area as possible to prevent the
welding current from traveling along unknown paths and causing electric shock and fire
hazards.
9. Remove stick electrode from holder or cut off welding wire at contact tip when not in use.
10. Does not use the welding power source for other than arc welding.
11. Wear oil-free protective garments such as leather gloves, a heavy shirt, cuffless trousers,
boots, and a cap.
12. A loose cable connection can cause sparks and excessive heating.
13. Tighten ail cable connections.
14. When there is an electrical connection between a work piece and the frame of wire feeder or
the wire reel stand, are may be generated and cause damage by a fire if the wire contacts
the frame or the work piece.
FUMES AND GASES can be hazardous to your health.
Arc welding produce fumes and gases. Breathing these fumes and gases can be hazardous to
your heaith.
. Keep your head out of the fumes. Do not breathe the fumes.
Ventilate the area and/or use exhaust at the arc to remove weiding fumes and gases.
If ventilation is poor, use an approved air-supplied respirator.
Read the Material Safety Data Sheets (MSDS) and the manufacturer's instructions on
metals, consumables, coatings, and cleaners.
Do not weld or cut in locations near degreasing, cieaning, or spraying operations.
The heat and rays of the arc can react with vapors to form highly toxic and irritating gases.
6. Work in a confined space only if it is well ventilated, or while wearing an air-supplied
respirator. Shielding gases used for welding can displace air causing injury or death.
Be sure the breathing air is safe.
PWN
on
CobraMig400P Owner's Manual - Page 4
2. ARC WELDING SAFETY PRECAUTIONS (continued)
CYLINDER can explode if damaged.
x u
A shielding gas cylinder contains high-pressure gas. If damaged, a cylinder can explode.
Since gas cylinders are normally part of the welding process, be sure to treat them carefully,
ON DAR ею
o
Use oniy correct shielding gas cylinders, gas regulator, hoses, and fittings designed for the
specific application; maintain them in good condition.
Protect compressed gas cylinders from excessive heat, mechanical shock, and arcs.
Keep the cylinder upright and securely chained to a stationary support or a rack to prevent
falling or tipping.
Keep cylinders away from any welding or other electrical circuit.
Never touch cylinder with welding electrode.
Read and follow instructions on compressed gas cylinders, associated equipment, and the
CGA publication P-1 listed in PRINCIPAL SAFETY STANDARDS.
Turn face away from valve outlet when opening cylinder vaive.
Keep protective cap in place over valve except when gas cylinder is in use or connected for
use.
Do not disassemble or repair the gas regulator except for the person authorized by the
manufacturer of them.
AN CAUTION
Be sure to observe the followings for preventing physical injuries, a fire and electric shock.
Handling of plastic parts
Front panel and the likes on this power source are made of polycarbonate.
Make sure to observe the following notice.
(2) Do not apply external force and a shock to front panel and the likes. Otherwise it
maybe broken and in trouble.
(3) Polycarbonate can endure wiping off with water and alcohol in general but using at a
sticking place with an organic solvent, chemicals, cutting oil and atmosphere such as
composition oil, it gives bad influence to polycarbonate and it causes a crack
(breaking) and a strength down.
if abnormality was discovered such as crack on the front panel, stop operating
immediately and ask to repair and change.
p Rotating parts may cause injuries. Be sure to observe the following.
If hands, fingers, hair or clothes are put near the fan's rotating parts or wire feeder's feed roll,
injuries may occur.
1.
2.
Do not use this equipment if the case and the cover are removed.
When the case is removed for maintenance/inspection and repair, certified or experienced
operators must perform the work. Erect a fence, etc. around this equipment to keep others
away from it.
Do not put hands, fingers, hair or clothes near the rotating fans or wire feed roll.
CobraMig400P Owners Manual - Page 5
2. ARC WELDING SAFETY PRECAUTIONS (continued)
ARC WELDING work areas are potentially hazardous.
FALLING or MOVING machine can cause serious injury.
When hanging the welding power source by a crane, do not use the carrying handle.
Put the welding power source and wire feeder solidly on a flat surface.
Do not pull the welding power source across a floor laid with cables and hoses.
Do not put wire feeder on the welding power source.
Do not put the welding power source and wire feeder where they will pit or fall.
бо вом
WELDING WIRE can cause puncture wounds.
1. Do not press gun trigger until instructed to do so.
2. Do not point gun toward any part of the body, other people, or any metal when threading
welding wire.
CobraMig40Q0P Owner's Manual - Page 6
PRINCIPAL SAFETY STANDARDS
Arc welding equipment — installation and use, Technical Specification
¡EC 62081, from Internationa! Electro technical Commission
Arc welding equipment Part 1: Welding power sources IEC 60974-1, from International Electro technical
Commission
Safety in Welding and Cutting, ANSI Standard Z49.1, from American Welding Society.
Safety and Health Standards, OSHA 29 CFR 1810, from Superintendent of Documents, U.S.
Government Printing Office.
Recommended Practices for Plasma Arc Cutting, American Welding Society Standard AWS C5.2, from
American Welding Society.
Recommended Safe Practices for the Preparation for Welding and Cutting of Containers That Have
Held Hazardous Substances, American Welding Society Standard AWS F4.1, from American Welding
Society,
National Electrical Code, NFPA Standard 70, from National Fire Protection Association.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas
Association,
Code for Safety in Welding and Cutting, CSA Standard W117.2, from Canadian Standards Association,
Standards Sales.
Safe Practices For Occupation And Educational Eye And Face Protection, ANSI Standard 287.1, from
American National Standards Institute.
Cutting And Welding Processes, NFPA Standard 51B, from National Fire Protection Association.
NOTE: The codes listed above may be improved or eliminated. Always refer to the updated codes.
M050906
CobraMig400P Owner's Manual - Page 7
3. GENERAL NOTICE OF OPERATION
3.1 Rated Duty Cycle
A
CAUTION
© Use this welding power source at or under the rated duty cycle. Exceeding the rated duty
cycle limitation may result in damage to the welding machine.
® The rated duty cycle of the welding power source is the following:
Three phase (208/230/460V)
Single phase (208/230V)
For welding any alloys For welding Aluminum For welding
with 3/64" wire or less with ail other wires
Pulse mode 400A, 50% 200A, 40% 120A, 40%
DC mode 400A, 60% 250A, 40% 120A, 40%
® The duty cycle of 60% means the way the machine
continuous welding at the rated current.
is rested for 4 minutes after 6 minutes of
ON OFF
« ple >
6 min. | 4 min.
10 min. ”
(Operation cycle of 60% duty cycle!
e Failure to observe duty cycle limitations
| Single phase | | Three phase |
may cause an excess of the tolerance of "EN ori E
the temperature inside the welding 100 e5les épAOrless 210A or less
machine. This may contribute to &
premature welding machine failure or Ly
product damage. O 400A. 50%
> 30 (Rated)
e The figure shown right indicates the ais | ais
relation between welding current and =
duty cycie. Use the welding machine e
within its usable range, following the duty 100 300 350 400
cycle for the welding current. WELDING CURRENT (A)
(PULSE MODE)
@The duty cycle of the weiding power
source is also limited by the duty cycles of | Single phase | | Three phase |
accessories combined with such as
welding torches. Use the welding machine _. 100 2525iess 199A or less 310A or less
within the lowest rated duty cycle of the =
accessories. LL
D 400A,60%
2 50-4 (Rated)
> 120% meo 250A 40%
H (Rated)
>
O
0 f |
3.2 Applicable Welding Process and Wire Diameter
Refer to Section 10.1.1,
diameter.
3.3 Limitation of use
“Setting of Welding Mode”
}
200
WELDING CURRENT en
(DC MODE)
for details of applicable welding method and wire
@ Do not use this welding power source for pipe thawing.
CobraMig400P Owner's Manual -
Page 8
4. STANDARD COMPOSITION AND ACCESSORIES
4.1 Standard Composition
® The parts names indicated in the boxes are standard parts. They are not supplied with this
welding machine. Preparation of the standard parts except the welding power source is required to
use the welding power source.
® Input cable and grounding cable
For a switch box, the 6.5ft [2m] input and grounding cables are from the back panel of welding
power source.
Input cable AWG8 [Bmm*] with 10mmo terminal x 3
Grounding cable | AWG8 [8mm“ with 10mm¢ terminal x 1
| Pressure regulators for gas cylinders]
Grounding cable
Input cable 6fi[2rmj Control cable
¡Power cable for Wire Feeder Cabinet
/
4
a
~~.
Welding torch
| Wire Feeder Cabine Base melai
A
Welding power source
AN
| Power cable for base metal |
Ground a work piece if a
i lo w requires.
NOTE: Use power cable size as follows cal law req
Up to 33ft [10m]: AWG 2/0 [60mm?]
Up to 66ft [20m]: AWG 3/0 [80mm?]
CobraMig400P Owners Manual - Page 9
4. STANDARD COMPOSITION AND ACCESSORIES (continued)
4.2 Accessory
Make sure you have the item below before you start using the welding power source.
Description Specification Q'ty Part number Remarks
For the power cable to welding
Power cable connector DIX SKK 70 2 153-0755 power source
4.3 Preparation of consumabies for welding
(1) Shield Gas
Use a suitable gas for welding method.
@ Carbon dioxide gas (CO; gas)
For welding (purity: 99.9% or more, moisture content: 0.002% or less)
e MAG gas
80% argon (Ar) + 20% carbon dioxide gas (CO; gas)
% MIG gas for stainless steel without pulse
90% helium (He) + 7.5% argon {Ar} + 2.5% oxygen (03)
® MIG gas for stainless steel with pulse
66% argon {Ar} + 33% helium (He) + 1% carbon dioxide gas (CO, gas)
® MIG gas for Aluminum
Pure argon (Ar)
(2) Welding Wire
CobraMig400P Owners Manuai - Page 10
5.1 Welding Power Source
5. FUNCTION OF EQUIPMENT
Input cable
Contact with Wire Feeder Cabinet
= Rubber feet =
Carrying handle (
Parameter adjusting knob
8 о
т
2 =
5 Е
_ O
D = к
3 4 =
CL т 5
с © ag
= a О
= \ \
Rubber feet
CT
ar
Output termina! (-) ==
CobraMig400P Owners Manual - Page 11
6. NECESSARY POWER SOURCE EQUIPMENT
6.1 Welding Power Source Equipment (for commercial use)
/A WARNING
¡O When the welding machine is used in such a humid environment as construction site, on the
steel plate, or on steel structure, install a leakage breaker.
Á CAUTION
6 Be sure to install a switch with fuse or a circuit breaker (for motor) to the input sides of each
welding machine.
Capacity of Necessary Power Source Utility
Cobra Mig
MODEL CM-400P
208/230/460V, Three phase
208/230V, Single phase
The welding power source links the
primary voltage automatically.
208/230/450V1+10%, Three phase
208/230V+10%, Single phase
Installed capacity 24kVA or more
Capacity of switch/circuit breaker 70 A for 208/230V, 50A for 460V
Power supply voltage
Tolerance range of fluctuation of power supply voltage
6.2 Precautions for Use of the Engine Generator
/\ CAUTION
@ Use the auxiliary power of engine welder whose voltage waveform has been improved. Some
of the engine welders have poor electricity, which may cause product damage. Contact an
engine welder manufacturer for improvement of waveform.
To prevent the engine generator or auxiliary power from being damaged, follow the instructions below.
® Set the output voltage of the engine generator to the voltage range between 230 and 240V at no-load
welding operation. Setting to extremely high output voltage may result in product damage.
8 Use the engine generator with a damper winding of which capacity is more than twice as much as the
rated input of the welding machine. Generally, the recovery time of the engine generator's voltage for
load change is slower than that of the commercial input power source, and if the engine generator
does not have sufficient capacity, sudden current change such as arc start will occur. This may result
in abnormal decrease in output current or arc loss. Ask an engine generator manufacturer for a
damper winding.
® Do not combine more than two welding machines with an engine generator. The affect of each
welding machine may cause easy loss of arc.
CobraMig400P Owner's Manual - Page 12
7.1 Transport
7. TRANSPORT AND INSTALLATION
Á WARNING
Follow the instructions below to avoid trouble and product damage when carrying the welding
machine.
@ Do not touch the charging parts inside or outside the welding machine.
@ Be sure to disconnect the line disconnect switch when carrying the welding
machine,
@ When hanging the welding power source by a crane, do not use the carrying
handle.
7.2 installation
/À WARNING
When installing the welding machine, follow the instructions below to avoid a fire caused by
welding and physical damages by fume gas.
@ Do not place the welding machine near combustible materials and flammable
gas.
@ Remove combustible materials to prevent dross coming into contact with
combustible objects. If that not possible, cover them with noncombustible
covers.
@ To avoid gas poisoning and danger of suffocation, wear a gas mask or
adequately ventilate when the welding machine is used in the place regulated
by a local law.
E, O To prevent disorder or poisoning caused by fume, wear a gas mask or weld at
a partial exhaust facility approved by the local regulation.
| 6 Adequately ventilate or wear a gas mask when using the welding machine in a
tank, a boiler, a hold of a ship, because heavier gas such as carbon dioxide or
argon gases are drifting there.
@& When using the welding machine at a narrow space, comply with a trained
supervisor's directions. And be sure to wear a gas mask.
6 Do not operate the welding machine near the piace where degreasing,
cleansing, and spraying are performed. Otherwise, poisonous gas may be
generated.
O Be sure to wear a gas mask or adequately ventilate when welding a coating
steel plate. {Poisonous gas and fume may be generated.)
CobraMig400P Owner's Manual - Page 13
7. TRANSPORT AND INSTALLATION (continued)
Á CAUTION
= To prevent electromagnetic troubles, read the following. Also, if electromagnetic
2 5) ) troubles occur, check the following again.
Since large current abruptly flows inside the welding machine during welding, other machines
near the welding power source may be troubled due to electromagnetic noise
6 Do not ground the welding power source commonly with other machines.
@ Close and fix all doors and covers of the welding machine.
6 Do not use an unnecessarily long cable.
@ Place a base metal cable and a torch side cable as closely as possible.
in the event of electromagnetic trouble, follow the instructions below.
@ Change the installation place of the welding machine.
@ Keep the machines which may be affected away as far from the weiding machine, cables and
weiding site as possible.
6 Adda noise filter to the input cables.
€ Mount an input cable in the grounded metallic conduit.
@ Shield the whole welding places from electromagnetic trouble, If electromagnetic troubles are
still not solved after following the above instructions, consult your nearest DAIHEN dealer.
À CAUTION
Follow the instructions below when selecting an installation place of the welding power source.
@ Do not install the welding power source in the piace subject to direct suniight and rain.
@ Place the welding machine on a strong and stable surface.
@ Install the welding machine in the place where the ambient temperature is between +14 °F and
+104 °F [-10 °C and +40 "CI.
@ Do not install the welding machine in the place where metal material such as spatter enters the
welding power source,
& Keep the instali distance of 1ft [30 cm] between the welding power source and the wali or other
welding power.
@ Install a wind shield to protect arc from wind.
@ Fix the gas cylinder to the stand only for gas cylinder.
CobraMig400P Owner's Manual - Page 14
8. CONNECTION PROCEDURE AND GROUND FOR SAFETY USE
/\ WARNING
Follow the instructions below to avoid electric shock.
* Do not touch the charging parts, as this will result in fatal shock and severe burn.
@ Do not touch the charging parts of the weiding machine.
@ Have a qualified electric engineer ground the case of the welding power source and the base
metal or jig electrically connected, following a local low.
@ With the line disconnect switch inside the switch box all turned off, ground and connect the
welding machine.
@ Do not use a cable with lack of capacity or a cable seriously damaged.
@ Tighten and insulate the connections of cables.
@ Surely attach the cover of the welding machine after connection of the cables.
8.1 Connecting of the Welding Power Source
Control cable(3)
Gas cylinder | Power cable for Wire Feeder Cabinet(2)
NIV
bt
Welding torch(5)
Wire Feeder Cabinet Base metal
—
Power cable for base metal(T)
Welding power source
AN
Ground a work piece if a
local law requires.
Follow the steps below to attach the cables to the output connectors of the welding power source
referring to the illustrations of "Connection of the Welding Power Source” on the previous page.
1. Connect the power cable for base metal between the base metal and "output terminal ©".
2. Connect the power cable for Wire Feeder Cabinet between the back side of Wire Feeder Cabinet
and "output terminal © ".
3. insert the control cable for Wire Feeder Cabinet into the socket for Wire Feeder Cabinet.
4. Attach the gas hose to the gas inlet on the Wire Feeder Cabinet.
5. Connect the welding torch to the Wire Feeder Cabinet.
CobraMig400F Owner's Manual - Page 15
8. CONNECTION PROCEDURE AND GROUND FOR SAFETY USE (continued)
8.2 Connecting of the Gas Hose
/\ WARNING
& You may suffer from danger of suffocation caused by lack of oxygen when
shield gas keeps drifting in a closed place. Be sure to turn off the shield
gas at the main when the welding power source is not in use.
/\ CAUTION
@ Be sure to connect the gas hose after fixing to the stand, as physical injuries may result
from failing down of gas cylinder.
@ Attach a proper gas flow regulator to a gas cylinder. Failure to observe the demand may
result in physical injuries. The gas flow regulator for high pressure gas must be used.
1. Securely aftach the gas hose to the gas inlet located on the rear side of the Wire Feeder Cabinet with
a monkey wrench, etc.
2. Fix the nut for attaching gas cylinder to the gas cylinder with a monkey wrench, etc.
3. Securely aftach the gas hose to the gas outiet with a monkey wrench, etc.
CobraMig400P Owners Manual - Page 16
6. CONNECTION PROCEDURE AND GROUND FOR SAFETY USE (continued)
/A WARNING
Foilow the instructions below to avoid electric shock.
,
a
me
Touching the charging parts may result in fatal electric shock and severe burn.
@ Do not touch the charging parts of the welding machine.
@ Have a qualified electric engineer ground the case of the welding power source and the base
metal or jig electrically connected in accordance with a focal low.
@ With the line disconnect switch in the switch box ail touched off, ground and connect the
welding machine.
/\ CAUTION
@ Be sure to install a switch with fuse or a circuit breaker {for motor) to the input sides of each
welding machine.
5 <| Mount a switch with fuse or a circuit breaker |
on each welding machine. ISINGLE(1) PHASE connection |
GREEN YELLOW stripe cable Base metal/JIG
for Grouding cable 2%
Cable T(1) and V(2)
for suppiy the primary voltage
Insulate and isolate
cable W(3) condactor
| | | GREENYELLOW
with insulation sieeving, tape Y
cable for grounding
Input cable
Surely con the input and grounding cables
AVVGS (8 ) to the circuit breaker .
/\ CAUTION
Be sure to ground the case of the welding power source.
Use a grounding cable of which thickness is more than AWGS [8mm*].
O if the welding power source which is not grounded is used, voltage will be generated in the
case through the capacitor between the welding power source input circuit and the case or
floating capacity {electrostatic capacity naturally generated between the input conductor and
the case metal). If you touch the case or the base metal, you may suffer from electric shock.
Be sure to ground the case of the welding power source.
CobraMigd400P Owner's Manual! - Page 17
9. WELDING PREPERATION
9.1 Preparing the Protective Equipment
To protect you from gas generated from welding, fume, and lack of oxygen,
wear protective equipment.
© To avoid gas poisoning and danger of suffocation, wear a gas mask or adequately ventilate
when the welding machine is used in the place regulated by a local iaw.
@ To prevent disorder or poisoning caused by fume, wear a gas mask or weld at a partial
exhaust facility approved by the local reguiation.
6 Adequately ventilate or wear a gas mask when using the welding machine in a tank, a boiler,
a hold of a ship, because heavier gas such as carbon dioxide or argon gases are drifting
@ When using the welding machine at a narrow space, comply with a trained supervisor's
directions. And be sure to wear a gas mask.
@ Do not operate the welding machine near the places where degreasing, cleansing, and
spraying are performed. Otherwise, poisonous gas may be generated.
@ Be sure to wear a gas mask or adequately ventilate when welding a coating steel plate.
(Poisonous gas and fume may be generated.)
NOTE: Instali a windshield to protect arc from wind when using an electric fan for ventilation or
when welding outdoors. Failure to observe the demand may result in poor welding.
/\ CAUTION
Use the protective equipment to protect you and other workers from arc rays,
spattering dross, and noise from welding operation.
@ When performing or monitoring welding operation, wear an eye protector with a good light
blocking effect or face shield.
@ Wear protective glasses to protect your eyes from the spattering dross.
@ Wear protective equipment such as protective gloves, long-sieeve clothes, leg covers, and
leather apron.
O Install protective screens or barriers to protect the eyes of others in the work area from arc
ray.
& Wear an ear protector when noise level is high.
CobraMig400P Owners Manual - Page 18
9. WELDING PREPARATION (continued)
9.2 Welding Conditions
When setting to the improper welding conditions, the following troubles will occur.
Cause Trouble
Wire extension is too long.
«Long Arc length
Wide bead width
* Poor shield
*Short arc iength
*Easy generation of spatter
Long arc length
Wide bead width
+ Shallow penetration and flat bead
* Stick to base metal and easy generation of spatter
- Narrow bead width
«Deep penetration and high excess metal
Wide bead width
«Deep penetration and high excess metal
Narrow bead width
Shallow penetration and low excess metal
Wire extension is too short.
Arc voltage is too high.
Arc voltage is too low.
Welding current is too high.
Travel speed is too fast.
The data in the tables below is only for reference. Piease find the optimum welding conditions for
weldment shape and welding position.
9.2.1
Example CO; Welding Conditions
(1) Exampie Welding Conditions of Horizontal Fillet
oN
(Td
EM
Plate Lea lenath Wire Welding Arc Travel CO» gas
thickness mm) diameter current voltage speed flow rate
€ (imm]} И time) (A) (Y) (PM [em/min]) | (CFM Pe/min])
18ga. | 010-012 | 0.035" — - 197-236 | 035-053
[1.2] 25-30] | (0.9—1.0] 70—100 18—19 [50—60] [10—15]
16са, | 0.100.127 0.03570.045" — _ 197-236 | 035-053
[1.6] 25-30] | [0.91.2] 390-120 18—20 | [50—60] [10—15]
Taga, | 0.12°-0.14" | 0.035"0.045" — _ 197-236 | 053071
[2.0] 3.035] | [0.9—12] 100—130 19-40 | [50—60] [15—20]
12ga | 0.127014" |0.03570.045" _ 197236 | 053071
[2.3] [3.0—3.5 | [09-12] 120—140 191 [50—60] 15—20]
178" 0120.16 | 00350.045" 177-217 | 053071
[3.2] [3.0—4.0] | [0.9—1.2] 130—170 19—21 [45—55] [15—20]
ane 1 0160781 0045 177517 | 053071
[4.5] [4.0—4 5] 1.2] 190—230 22724 | 145-55] [15—20]
177 020024” | 0.045" 157-107 | 053-071
[6.0] | 150-601 | MA 200-280 | 28723 | [40—50] | [15—20]
E 034028" | 0045" 138-157 1 053071
[9.0] [6.0—7.0] [1.2] 280— 300 9-32 | [35-40] [15—20]
17 0280.32 | 0.045" 118-138 | 071-086
[12.0] | [7.0—8.0] [1.2] 300—340 32734 1 [30—35] [20—25]
CobraMig400P Owner's Manual - Раде 19
9. WELDING PREPARATION (continued)
(2) Example Welding Conditions of Down Filiet
Plate Lea lenath Wire Welding Arc Travel CO» gas
thickness | (mm) diameter current voltage speed flow rate
t (imm])} ((mm]@) (A) (Y) (iPM [cm/min}} | (СЕМ [#mini)
18ga. 0.10-0.12" 0.035" _ 107-236 035-053
[1.2] [253.0] [0.9, 1.0] 70— 100 18—19 [50—60] [10—15]
16ga. 0.10"-0.12" | 0.035"-0.045" 7 ~ 197-556 035-053
[1.6] [25—3.0] [0.9-1.2) | 90-120 | 18—20 [50—60] [10—15]
14ga. 012-014" | 00550046 - — 197556 053-071
[2.0] [3.0—3.5] 09-12 | 190—130 | 19—20 (50— 60] 15—20]
12ga. 012-014 | 0035-0045" a - 19.7-23.6 0530.71
[2.3] [3.0—3.5] 09-12] | 120—140 | 19—21 [50—60] [15—20]
Te 0.120.167 | 0.035-0.045" 17.7-21.7 05307
3.2] [3.0—4.0] 09-132] | 130-170 | 20—22 [45—55] 15—20]
3/76" 0160.18" ; 17.7-21.7 05501
45) 40-457 | 0045/12] | 200-250 | 23-26 (45561 15-201
14 0.20°-0.24" - 157-187 0.53-0.71
16.0 50-60 | 00452] | 280-300 | 29-32 40—50) 1520
3/8" 0247-0739" т — 7 157-177 05307
9.0] 60-80 | 0048*M.2] | 300—350 | 32—34 4048] 15—20
1/2" 0.39-0.47" - ~ — 9.8-13.8 0.71-0.88
[12.0] | [00-120] | 0049 [121 | 320-350 | 33-36 | m5 4p [20—25]
(3) Example Welding Conditions of | Shape Butt without Backing Plate
Ale Le
pire т A =
¿ UE НЙ
>
Plate Root Wire Welding Arc Travel CO» gas Number
thickness gap diameter current voltage speed flow rate of
t {(fmm}) g {fmmj) (Imm) (A) (V} | (PM [em/min]) | (CFM [E/min]) | layers
18ga. 0.035" 0.040” — _ 177217 0.35
[1.2] 0 0.9,1.0; | 70—80 | 17-18 | 45 551 [10]
16ga. 0.035", 0.040" | _—— — 17.7-21.7 0350.53
[1.6] 0 09, 1.0 | 807100 | 18-19 | 45—55] 10—15]
14ga. 0-0.02" | 0.035".0.040" — 197-217 035-053
[2.0] [0—0.5] {0.9, 1.0] 190—110 | 19—20 [50—55] [10—15] |
1298, | 0.02-0.04" | 0.035".0.040" _ — 187-217 0.35-0.53
[2.3] 05-10] | (09, 1.0 | 110-130 | 19-20 | 50-557 110—15]
178° 10.04-0.05" | 5.035" 0.040 157-187 0.35-0.53
[13.2] [1.0—1.2] 10.9, 1.0] 130—150 | 19—21 [40—50] 10—15]
3/18" 1 0.05-0.06" | 0.045" 15.7-19.7 0.35-0.53
45 | 12-15] [1.2] 150170 | 21—23 | 40—50) [10—15] !
174" [0.05-0.06"| 0.045" 15.7-19.7 053-071 [Front 4
6.0) | 12-151 | [2 | 2207760 | 24-26 | 40—50) 15-20) [Back1] “
38" | 005-606" | 0.045" 177-217 053-071 "Front 1
[9.0] M.2-15] [1.2] 320—340 | 32—34 | 4555) 15-20] [Back] *
CobraMig400P Owners Manual - Page 20
(4) Example Welding Conditions of Single and Double Grooves
9. WELDING PREPARATION (continued)
Travel
CO» gas
th joss Shane on fo diamoter current voltage om eE e
t (Imm}) g (fmm]) | h (imm]) | (Imm) (A) (Y) [em/min]) mind layers
mn 20 5 300—350 | 32—35 19040 10-20) Front
[12.0] 0-0.02" e 300—350 | 32—35 | [45—50] | 20-25 |Back
60° 9795) | 4-0 sign | 380—420 | 32—35 [35—50] 20—25] Front
; т. 1.6] 380—420 | 32—35 45—60] 20—25] Back
i” + 0045 300—350 | 32—35 (90-40) 20-28 Front
[16.0] 0-0.02" a 300—350 | 32—35 [45—50] [20—25] Back
0051 [4—6] 1/46" 380—420 | 32—35 35—60] 120-251 Front},
18) 380—420 | 32—35 45—60] 12025) Back
а 0045 300—350 | 32—35 190-281 12028) Front
[16] QE 300—350 | 32—35 | 139—35) | [20—25] |В2°К
4—6] 380—420 | 36—39 135-40] 20-25] Front
380—420 | 36—39 135401 05 Back
vu , 400—450 | 36—42 25-0 10-29 Front
[19] 1116" | 400—450 | 36—42 | 530) | mo—2s) [Back
0.20 81 | 400—420 | 36—39 aos 20—25) 1|F
[5-7] 400—420 | 39—42 13098) 20—25) 2 | В
5 TEO Te
400—450 | 39-42 | (30 357 | 20-25] |?|8
CobraMig400P Owner's Manual - Page 21
9. WELDING PREPARATION (continued)
- Example Welding Conditions of Lap Fillet
A
10 13h
} 25-35...
/ A
—
{ ий lé? 7
A B
Plate Wire Welding Welding Travel Mark CO» gas
thickness diameter current voltage speed po flo A flow rate
t ([mm]) (immigp) (A) {V) {IPM [cm/min]) (CEM [2/min])
18ga. | 0.035"-0.040" — _ T7.7-21.7 0.35-0.53
[1.2] [0.9—1.0] | 80-100 | 18—18 [45—55] А [10—15]
16ga. | 0.03570 045" 7 _ 177-957 0.35-0.53
[1.6] 0.9—12 | 100-120 | 18—20 [45—55] A 11015]
14ga. | 0.035™0.045" ” _ 177-917 0530.71
[2.0] 09-12 | 100—130 | 18—20 [45—55] AorB [15—20]
129a. 1 0.03570.045" 7 _ 177-187 0.53-0.71
[2.3] [0.9—1.2} | 120-140 | 19—21 [45-50] В [15—20]
1/8" 0.035"-0.045" 17.7-187 0.53-0.71
[3.2] [0.9—1.2] | 130—160 | 19—22 [45—50] В [15—20]
3/16" 0.045" 15.7-177 0.53-0.71
[4.5] [1.2] 150—200 | 21—24 [40—45] В [15—20]
9.2.2 Example Welding Conditions of Wire CO, with Flux
(1)Example Welding Conditions of Horizontal Fillet
(EN
Td
|
Travel speed
{PM {cm/min])
CobraMig400P Owners Manual - Page 22
9. WELDING PREPARATION (continued)
9.23 Example Welding Conditions of MAG Short Arc
Material: Soft steel, Gas: Mixture gas of Ar + CO; (0.35-0.53CFM 0-15 £/min))
Joint poate Wire diameter Gap eng Arc voltage speed
Geometry t([mm]) (mme) ([mmi) (A) М) (IPM [em/min])
20ga. 0.030"-0.035" _ _ 15.7-21.7
[1.0] [0.8—1.0] О 20—55 13—15 [40— 55]
18ga. 0.030°-0.035" _ _ 11.8-19.7
1.2] 0.81.0] 0 60—70 14—16 130— 50}
16ga. 0.030%-0.035" _ B 15.7-23.6
ut [1.6] (0.8—1.0] 0 100—110 16—17 40—60]
12ga. 0.035"-0.045" 0-0.04" 110-120 17—18 11.8-15.7
[2.3] [1.0—1.2] [0—1.0) {30—40]
1/8" 0.035-0.045* 0.04"-0.06" 9.8-11.8
[3.2] [1.0—1.2] [1.0—1.5] 120-140 1719 [25— 30]
5/32" 0.035-0.045" | 0.06°-0.08" 9.8-15.7
[4.0] [1.0—1.2] [1.52.0] 150-170 18—21 [25—40]
9.2.4 Exampie Welding Conditions of Pulse MAG
{1} Example Welding Conditions of Horizontal Fillet Welding
Piate Leg Aim angle Number Welding Welding Travel
thickness length and of current voitage speed
(mm) ((mm]) position layers (A) (V) (IPM [cm/min])
Ue 9170.16 À 1 150 26-27 23.6 [60]
[3-2] [3-41 AS do 40°
3/16" 0.20" > ‘
[4.5] 15.0] e 1 170 26-27 15.7 [40]
1/4 0.24" сие here. Ñ
[6.0] 16.0] Angie of advance: 10° 1 200 27-28 15.7 [40]
5/32" 0.32" no
30-40 1 250 29-30 13.8 [35
[8.0] [8.0] ; [35]
© 0,030in.[1mm] &
и 1 1 180-200 25-27 17.7 [45]
4 я 00] 2 180-200 | 25-28 17.7 [45]
| 3 180-200 | 25-28 17.7 [45]
1 2
1“ H 1 220-230 25-28 17.7 [45]
15.0 2.01 < 2 220-230 | 25-28 | 17.7[45]
' ` 3 210-230 25.28 17.7 [45]
CobraMig400P Owner's Manual - Page 23
9. WELDING PREPARATION (continued)
(2) Example Welding Conditions of Downward Welding
Plate Welding | Weiding Travel
thickness Shape of current voltage speed
joint weld 9 p , Remarks
ти) (A) (М) (IPM [cm/min])
12ga. [2.3] butt 100 22-23 2.3 [70] Back bead appearance is good.
Leg length: 0.16"-0.20"
1/8" [3.2] fillet 100 21-22 2.3 [70] [4 - 5mm],
Throat depth: 0.10" [2.5mm]
(3) Example Welding Conditions of Upward Welding
Plate Welding Welding
thickness Shape of joini weld current voitage Remarks
t (fmm) (A) Y)
Weaving
1/2" Stop at both ends 100-110 20-21 | Leg length: 0.39"
(4) Both Side Weiding Conditions of (Semi-automatic)
Plate Weiding | Welding Travel
thickness Groove shape Number of current | voltage speed
(fmm) y (A) (м) | (IPM [em/min])
1/4" £ ] 1 170 25-26 11.8 [30]
[6.0] | 2 180 | 26-27 | 11.8 [30]
2/8" I 1 1 270 29-30 11.8 [30]
[9.0] 2 290 | 30-31 | 11.8 [30]
1/2" 1 280 30-31 15.7 [40]
[12.0] 2 330 33-34 15,7 [40]
Front 1 300 31-32 17.7 [45]
3/4" Front 2 300 31-32 17.7 [45]
119.0] 3 > Rear 1 340 32-33 17.7 [45]
Rear 2 280 30-31 17.7 [45]
A 60 7
ww 60" 7 Front 1 300 31-32 17.7 [45]
Front 2 320 32-33 17.7 [45]
qu Front 3 320 32-33 17.7 [45]
[25.0] 3 ó Rear 1 340 32-33 17.7 [45]
; Rear 2 320 32-33 17.7 [45]
Ae 60° A Rear 3 320 32-33 17.7 [45]
CobraMig400P Owners Manual - Page 24
9. WELDING PREPARATION (continued)
(5) Example Welding Conditions of Single Side Welding Conditions (Automatic)
Plate Welding Welding Travel
thickness Groove shape Num oer of current voitage speed
t([mm]} y (A) (V) (IPM [cm/min})
3.21 4 i } 1 140 24.25 19.7 [50]
——l —
G=10
vi 45° м
1/4" / | 1 130 23-24 9.8 [25]
16.0] ! Ñ
HE SO 2 150 25-26 9.8 [25]
wo 45° yy
2 1 180 24-25 9.8 [25]
[12.0] 2 290 30-32 9.8 [25]
]
ww 45° —
12.01 | 2 200 25.26 9.8 [25]
3 200 26-27 9.8 [25]
HE Geis
= 45° ны
aja" 1 180 24-25 9.8 [25]
19.0] 2 300 29-30 9.8 [25]
[ 3 300 29-30 9.8 [25]
Ae 15
Oscillation width: 0.05" [2 mm]
Oscillation times: 120 times/min.
CobraMig400P Owner's Manual - Page 25
9. WELDING PREPARATION (continued)
(6) Single Bevel Groove Penetration Welding Conditions (Semi-automatic)
Weldin Weldin
Groove shape Number of current voltage Remark
ayers (A) (V)
Flat position не + 1 100 20-21
> 2 280 26-27
3 280 26-27 e
- 1 80 6-27 Oscillation
- 5 280 26-27
т 6 280 26-27
„770.13. 2] Unit; in. [mm] 7 280 26-27
Vertical position L.... y. 1 100 20-21
> 2 130 21-22
3 130 21-22
4 130 21-22 Oscillation
5 130 21-22
6 120 19-20
17081823 Unit in. [mm] T0
1 100-200 20-22
у 2 200 24-25
AN 3 200 24-25
X, 4 200 24-25
> 5 200 24-25
\ 6 200 24-25 №
; 7 200 24-25 oscillation
A 8 200 24-25
9 180 24-25
10 180 24-25
11 180 24-25
Unit: in. [mm] 12 180 24.25
Wire diameter: 0.045" (1.2 mm)¢, Gas: 20% СО, + Аг
CobraMig400P Owner's Manual - Page 26
9.2.5 Example Welding Conditions of Aluminum Pulse MIG
9. WELDING PREPARATION (continued)
(1) Example Welding Conditions of | Shape Butt
Plate Wire dia Welding Welding Travel Wire Gas flow
thickness ((mm] ) current voltage speed extension rate
((mmb P (A) (V) GPM fem/min]) Umm) (CFM [#min])
16ga. 3/64" 23.6-31.5 0.47"-0.59" 0.71
[1.5] 1.2] 60-80 16-18 [60-80] [12-15] 120]
i4ga. 3/64" 15.7-19.7 0.59" 0.71
[2.0] [1.2] 70-80 17-18 [40-50] (15) [20]
1/8" 3/64" 15.7-19.7 0.59” 0.71
[3.0] [1.2] 80-199 | 17-18 [40-50] [15] [20]
5/32" 3/64" 15.7-19.7 0.59" 0.71
14.0) [1.2] 90-120 | 18-21 [40-50] [15] [20]
1/4" 3/64", 1/16° 15.7-19.7 0.59%-0.71" 0.71
16.0] M2 16 | 150-180 | 20-23 [40-50] 15-18] [20]
(2) Example Welding Conditions of Horizontal Fillet
Plate Wire dia Welding Welding Travel Wire Gas flow
thickness (fmm current voltage speed extension rate
(mm]) ® (А) (V) (IPM [em/min]) (mm) (СЕМ [¢/min])
16ga. 3/64" 23.6 0.59" 0.53-0.71
[1.5] [1.2] 60-80 16-18 160] [15] 15-20]
1/8" 3/64" 23.6 0.59" 0.53-0.71
100-120 19-
[3.0] [1.2] ) 42) [60] [15] [15-20]
1/4" 3/64", 1/16" 19.7-23.6 0.59” 0.71
[6.0] [1.2.1.8] | 150-180 | 20-23 [50-60] 15) 120]
9.2.6 Example Short Welding Conditions of Aluminum MIG
(1) Example Short Welding Conditions of | Shape Buit
Plate Wire dia Welding Welding Travel Wire Gas flow
thickness ((mm] ) current voltage speed extension rate
(imm]) ® (А) № (IPM [em/min]) (fmm) (СЕМ [Вит]
1/8" 3/64" 23.6-31.5 0.59" 0.71
120-140 20-22
[3.0] 1.2] 0 [60-80] [15] [201
5/32" 3/64" 23.6-31.5 0.59"-0.71" 0.71
14.0] 1.2] 150-170 | 22-24 [60-80] [15-18] [20]
1/4" 1/16" 15.7-236 0:87"-0,79" 0.71-0.88
[6.0] [1.6] 180-210 | 23-25 [40-60] [17-20] [20-25]
(2) Example Short Welding Conditions of Horizontal Fillet
Piate Ai Welding Welding Travel | Gas flow
thickness meno D) current voltage speed ps rate
((mm]) y (A) v) | (PM [em/min]) (СЕМ [тли]
1/8" 3/64" 23.6-27.6 0.59" 0.53-0.71
[3.0] [1.2] 140-160 21-22 [60-70] [15] [15-20]
5/32" 3/64" 19.7-23.6 0.59"-0.71" 0.53-0.71
[4.0] 1.2] 150-170 | 2224 [50-60] [15-18] [15-20]
1/4" 1/16" 19.7-25.6 0.67"-0.79" 0.71-0.88
[8.01 [1.6] 200-230 | 23-25 [50-65] 117-20] 120-25]
CobraMig400P Owner's Manual - Page 27
10. OPERATION
10. Front Pañel
ls r=" [ol
ET CONTRO
o ll CWE
миелна. @|@ (=: Me
40 MUOSER. (FED @ |® ©: A:
e 5 aise тай МГ 074 TE
NeT J
O 15 MIGSFTALMAA Y |»
HED ALM dB Г" пт
Mv [a о Е
E e Midi A
Tan EIN Era gar y
1] WELDING METHOD
CobraMigd00P Owner's Manual - Page 28
10. OPERATION (continued)
/\ CAUTION
@ This welding machine should be operated by persons only after reading and
understanding contents of this owners manual and having knowledge and skills for
handling the welding machine safely.
@ Use this welding power source at or under the rated duty cycle. Exceeding the rated duty
cycle limitation may result in damage to the welding machine.
When reading the operating instructions described below, unfold Page 64 so that you can read them
confirming the location of the keys on the front panel.
10.1 Basic Settings
10.1.1 Setting of Welding Mode
Choose the welding mode using the WELDING METHOD key {1], the WIRE/GAS selector keys
[2], and the WIRE DIA (inch) key [3] in accord with the welding method and wire diameter used.
The selectable welding modes are shown on the next page.
When setting the welding mode, select the welding method using the WELDING METHOD key
[1] first. Once the welding method is set, the available wire diameters are automatically decided
according to the welding method. Then, select wire/gas using the WIRE/GAS selector keys [2].
Finally, set the wire diameter with the WIRE DIA (inch) key [3].
For example, for welding power source, when selecting “WAVE PULSE” while setting "DC MILD
STEEL SOLID CO, 0.035" [0.9mm] " with the WELDING METHOD key [1], the "MILD STEEL
SOLID CO" lamp blinks, which means the preset combination is incorrect. in that case, select
material and gas again using the WIRE/GAS selector keys [2] or reset the welding method using
the WELDING METHOD key [1]. Selecting the proper combination of material and gas can
cancel the error and activate the welding power source.
Wrong combination of welding mode and wire diameter will cause "---"and “---" in the displays to
blink, the LED {amps to light, and the welding power source to stop.
The following table shows the selections of wire diameter for setting current at aluminum welding.
Refer to the table for selecting a wire.
Materia! Mode Standard range of stable welding current
0.035" | PULSE
[1.0] DC
AL/MG (HARD) 3/84"
{A5183. A5356 etc! [1.2]
1/16"
[1.6]
3/64"
AV/PURECSOFT| 12:
{04043 etc,
1/16”
[1.6]
Welding current {A}
NOTE:
® The data shown above differ depending on actual welding conditions such as welding
rate and welding position, etc.
® Observe the maximum current and the rated duty cycle. Optional accessories are
necessary for some combinations of a torch and a Wire Feeder Cabinet.
CobraMig400P Owner's Manual - Page 29
10. OPERATION (continued)
Table of the Welding Mode
Welding mode
Rated output
WIRE DIA.
Mo Type of wire Gas ([mm]) CM-400F Ey @3ph.
030" (0.8) О
MILD STEEL 035" (0.9) О
DC SOLID CO 040" (1.0) О
045" (1.2) О
030° (0.8) О
nc | MILD STEEL MAG ES do
SOLID (BO%Ar+20%CO;) gummy 5
052" (1.4) О
035" (0.9) О
DC | MILD STEEL MAG 040" (1.0) О
PULSE SOLID (ВО%Аг+20%СО,) | 045" (1.2) О
052" (1.4) О 120 А
STAINLESS MIG 095" 09 5
, , 0367 (0.9 О
DC | stEEL soup | 90 fog al 040" (1.0) О
ен? 045" (1.2) O
MIG 035" (0.9) О
PULSE | STEEL SOL) | (66%Ar+33%He [0407 (1.0) О
+1%CO2) 045" (1.2) О
MILD STEEL MAG
CORED (80%Ar+20%C0,) | 049" (1:2) О
DC STAINLESS
MAG
CORES, (80%Ar+20%C0,) | 04° (1-2) © 400A
035" (0.9) о
DC 040" (1.0) О 250 А
3/64" (1.2) О
1/16" (1.6) О 120A
035" (0.9) О
DC SOFT MIG (A 040" (1.0) О 200 А
PULSE г) 3/64" (1.2 О
ALMINUM) (1.2)
1/16" (1.6) О 1204
Se 035" (0.5) О
WAVE 040" (1.0) О 200 А
PULSE 3/64" (1.2) О
1716" (1.6) О 120A
035" (0.9) О
DC 040" (1.0) О 250 А
3/64" (4 2) О
1/18" (1.6) О 120A
035" (0.9) О
DC Ао 040" (1.0) О 200 А
PULSE ( MIG (Ar) 3/64" (1.2
ALUMINUM) (1.2) О
1/16" (1.6) О 120A
Se 035" (0.9) О
NAVE 040" (1.0) О 200 А
PULSE 3/64" (1.2) О
1/16" (1.6) О 120
CobraMig4 00P Owner's Manual - Page 30
10. OPERATION (continued)
10.1.2 Setting the Parameter
Pressing the key white the АЛРМ tamp
(located at the upper left of the A/IPM selector
key) is lit changes over displays of current
setting and wire feed rate. Pressing the A/IPM
seiector key while the A/IPM ¡amp is mot lit
causes the A/IPM lamp to light.
Pressing the key while the V/+ lamp (located
at the upper left of the V/ selector key) is tit
changes over displays of current setting and
wire feed rate. Pressing the V/+ selector key
while the V/+ lamp is not lit causes the V/+
lamp to light. While the V/Æ lamp is №,
welding voltage can be adjusted using the
parameter adjusting knob {6].
+ eb
+44 Ea a EEE ra
SEHON SEHE
EEE BE lalo ME dr MO Mk y MM lira o Me x EE
Alternate display between output conditions and
Display in the displays are changed according fo the parameters you select and the
UNIT famp of the parameter lights up.
UNIT lamps
Digital Meter — —
[Parameter displays]
® When the wire feed speed is displayed, you may not set to the maximum feed speed
depending on the welding mode settings (especially for large diameter). You are only
allowed to set the wire feed rate to the value that can achieve the current setting
determined by the rated output current.
@ The values shown in the displays are not the actual data but the setting values of
voltage, current, and wire feed speed. Use the values in the displays as approximates.
CobraMig400P Owners Manual - Page 31
10. OPERATION (continued)
10.1.3 Adjusting Welding Voitage
Using the VOLT. CONTROL key [11] allows you to select one of the following voltage adjustment
methods.
(1)Making the INDIVIDUAL Adjustment
The INDIVIDUAL adjustment can be achieved when the VOLT.CONTROL lamp (located at the
upper left of the VOLT. CONTROL key [11]) is off. In the case of the INDIVIDUAL adjustment,
welding current and welding voltage must be adjusted individually. When you want to set welding
voltage, make sure that the VOLT. CONTROL lamp is lit, then adjust the welding voltage while
turning the parameter adjusting knob [6]. When you want to set welding voltage, make sure that
the VOLT. CONTROL lamp is lit, then set welding voltage while turning the parameter adjusting
knob [6].
(2)Making the SYNERGIC Adjustment
The SYNERGIC adjustment can be achieved when the VOLT. CONTROL lamp (located at the
upper left of VOLT. CONTROL key [11}) is on. For the SYNERGIC adjustment, the proper
welding current for the current setting is automatically set. When the VOLT. CONTROL lamp is it,
welding voltage can be finely adjusted using the parameter adjusting knob [6]. in addition, it is
also possible to change over the display setting in the right display using the V/+ selector key [5].
The selectable display settings are the INDIVIDUAL mode (V) and the SYNERGIC mode (+
adjustment) . In the SYNERGIC display mode, the standard value is O. The setting range of
welding voltage is 0 to +30 .
NOTE: Use of mixture gas other than the mixture ratio of the following gas may not
properly adjust welding voltage at Synergic control, etc.
e Carbon dioxide gas (CO; gas)
For welding (purity: 99.9% or more, moisture content: 0.002% or less)
® MAG gas
80% argon (Ar) + 20% carbon dioxide gas (CO; gas)
® MIG gas for stainless steel without pulse
90% helium (He) + 7.5% argon (Ar) + 2.5% oxygen (O;)
® MIG gas for stainless steel with puise
66% argon (Ar) + 33% helium (He) + 1% carbon dioxide gas (CO, gas)
e MIG gas for Aluminum
Pure argon (Ar)
CobraMig400P Owner's Manual - Page 32
10. OPERATION (continued)
10.1.4 Arc Characteristics Function
When pressing the ARC CONTROL key [8], the ARC CONTROL lamp (located at the upper left
of the ARC CONTROL key [8]) lights up, the setting value is displayed in the right display, and
the V/+ lamp lights up. At that condition, it is possible to set arc characteristics by using the
parameter adjusting knob [6]. The setting range is 0 to +10. Pressing the ARC CONTROL key
[8] again or pressing the DISPLAY CHANGE key 17] returns to the previous parameter setting.
In addition, it is also possible to change over the display to a current-related parameter by using
the A/IPM selector key [4] and to a voltage-related parameter by using the V/+ selector key [5].
The standard setting value of arc characteristic is 0. As the setting value of the arc characteristic
is set in the negative direction (up to -10), arc condition becomes harder. (Similar to less
inductance) As the setting value of the arc characteristic is set in the positive direction (up to
10}, arc condition becomes softer (Similar to more inductance). When you use the welding
power source in the low current range, set the setting value of the arc characteristic in the
negative direction to obtain good welding results. When you use the welding machine in the
high current range, set the setting value of the arc characteristic in the positive direction to
obtain good welding results. If you can not obtain optimum arc condition due to use of the
extension cables, set the setting value of the arc characteristic in the negative direction.
0: middle +10: softer
Arc Characteristic Control image
"10: harder
10.1.5 WAVE PULSE Function
In wave pulse welding, the ripple bead appearance is changed by applying two separate pulses
cyclically at low frequency. This feature will also assist in welding joints that have some poor fit
up or gaps. Although, the wave mode is usually most applicable for fully automatic welding,
benefits are also achieved even in semi-automatic applications. Good bead appearances are
obtained by setting the wave frequency to SHz or more even for semi-automatic.
When setting wave pulse frequency, select “DC WAVE PULSE” with the WELDING METHOD
Key [1]. Normaily, the WELDING METHOD key does not function during pulse welding or no-
pulse welding. When the WAVE PULSE key is pressed, the WAVE PULSE lamp (located at the
upper left of the WAVE PULSE key) lights up, the setting value appears in the left display, the
“Hz” LED lamp lights up. Under these conditions, wave pulse frequency can be adjusted while
turning the parameter adjusting knob. The setting range of wave pulse frequency is 0.5 Hz to
32 Hz. Adjust wave pulse frequency until you can obtain the desired bead appearance.
When pressing the WAVE PULSE key or DISPLAY CHANGE key again, return to the last
parameter that you have set. When changing the display to a current-related parameter, press
the A/IPM selector key [4]. When changing the display to a volt-related parameter, press the
V/t selector key [5].
NOTE:
© Wave pattern of the weiding bead varies depending on the heat input during welding.
% When using annealed wire, bead surface may blacken somewhat if shorting occurs
frequently during the welding operation.
CobraMig400P Owners Manual - Page 33
10. OPERATION (continued)
10.1.6 Verifying the Parameters in the Displays
The displays on the front panel provides the following functions:
1. Display of Parameter Setting Value
When setting to “parameter setting values display” mode during down period {excluding the
result display period right after the completion of welding) and during welding, values of
parameters under adjustment are displayed.
2. Display of Qutput Current and Voltage During Welding
The parameters shown in the displays automatically change to average values of output
current and output voltage according to the output conditions every about 0.5 second.
When you want to change the parameters during welding, switch to the “parameter setting
values dispiay” mode by using the DISPLAY CHANGE key [7]. When no welding operation
is not carried out for about 5 seconds or the DISPLAY CHANGE key [7] is held down, the
display mode automatically returns to the "output current and voltage display” mode. Refer
to Section 10.1.7, "Using the Parameter Adjusting Knob” for the parameters that can be
adjusted using the parameter adjusting knob [6] during welding.
3. Display of Welding Results after Compietion of Welding
Upon completion of welding, the average output current and voitage for last one second
blink for about 5 seconds. Therefore, the operators can verify the welding conditions right
after the completion of welding and can use them as approximates when adjusting the
welding conditions. This display is cancelled by starting the next welding or by pressing
any key on the front panel without waiting 5 seconds after the completion of welding. The
result display time can be preset to F8 by using the F key [M0]. The setting value is
displayed in the left digital and the "sec" lamp lights up. The setting range of the result
display time is 0 seconds to 60 seconds.
NOTE: In the case where the less than one-second welding such as tack welding,
etc. is performed, the correct results of the welding are not displayed.
4. Display of Error Message
If an error is detected in the power source of electric welding, an error number indicating
error messages blinks. See Section 11.1, "Troubieshooting™.
NOTE: The average output vaiues shown in the displays are processed by software
and are not guaranteed as control data of measuring instruments.
CobraMig400P Owners Manual - Page 34
10. OPERATION (continued)
10.1.7 Using the Parameter Adjusting Knob
When adjusting parameters using the parameter adjusting knob [6] during welding, change
over the display mode to the “parameter setting value display” mode by pressing the
DISPLAY CHANGE key [7]. Pressing the ARC CONTROL key [8] after changing to the
“parameter setting value display” mode adjusts the puise arc characteristics. Pressing the
WAVE PULSE key adjusts the wave frequency. In the “average parameter value display”
mode, you can not adjust the parameter.
10.1.8 POSA START adjustment
When POSA START is ON, the welding power source provides the POSA START (wire
slowdown at the start of welding). Default is ON. To alternate POSA START ON and OFF,
press and hold the POSA START key [12] in 2 seconds. When POSA START is ON, POSA
START LED is ON.
When tapping the POSA START key [12] during POSA START is ON, POSA START value
adjustment mode will be activated. In this mode, POSA START LED is blinking and the value
is indicated at the right side 7 segment LED. The adjustment range is from 0.0 to 8.0. The
default value is 5.0. At the same time, the actual wire feed speed of РОЗА START is indicated
at the left side 7 segment LED and "IPM" LED lamp lights up. The value can be adjusted by
turning the adjustment knobf6]. When tapping the POSA START key [12] again, the
adjustment mode is finished and the operation will go back as before.
CobraMig400P Owner's Manual - Page 35
10. OPERATION (continued)
10.2 Applied Settings
1021 Using Internal Function
® How To Use Internal Functions
LU When holding down the F key [10] for a few seconds, the function number in the
left-side display blinks, and the status of function assigned to the function number
lights up and ls displayed in the right-side display. Under this condition, a function
number can be preset by using the parameter adjusting knob [G].
Cobrar
The number of function blinks, The conditions of function lights.
:
A function number can be prasat with the parameter adjusting knob [6]
The above example indicates that F19 is set to "on.
When pressing the F key [10] again after presetting the desired function number,
the function number lights and the function conditions blinks. Under this condition,
functions can be preset by using the parameter adjusting knob [6].
Ha = : “FFE
‚Ма
The number of function lights. The condition of function blinks.
Conditions can be set while tuming the parameter adjusting knob.
The above example indicates that F4 is set to “off”.
2) Pressing the F key [10] again causes the function number to light up and retums to
the step 1, To cancel the function mode, hold down the F key [10] for a few
seconds.
NOTE: In the function mode, no confirmation of the function is carried out when
itis changed. Upon change of the setting by using the parameter adjusting knob
[6], the change becomes valid. Therefore, before changing a function setting,
carefully check to make sure that the correct function number is selected and
that the proper setting value for the function number is set.
CobraMigd00P Owner's Manual - Page 36
10. OPERATION (continued)
The following welding conditions can be adjusted by using the F key [10] and the
parameter adjusting knob [6], but only the welding conditions with* next to the
function numbers can be preset to the welding condition numbers.
(1) Fine Adjustment of Anti-Stick (Burnback) Time: F1*
Anti-stick (Burnback) time means the processing time fo prevent electrode wire from
fusing to base metal when welding is completed. Anti-stick (burnback) time is preset
to proper conditions according to welding methods and wire diameters at shipment,
but it can be finely adjusted by activating F1. The standard anti-stick (burnback)
time is preset to "0", time decreases in the negative direction and increases in the
positive direction. The fine adjustment range is 0 to +50 and the unit is 0.01
seconds.
Ex. 1) When the setting value of anti-stick (burnback) time is 25 seconds, add
0.25 second to fhe standard anti-stick (burnback) time.
Ex. 2) When the setting value of anti-stick (burnback) time is -10, subtract 0.1
second from the standard anti-stick (burnback) time.
(2) Fine Adjustment of Anti-stick (Burnback) Voltage: F2*
Anti-stick (Burnback) voltage means the voltage which is output when processing is
carried out to prevent electrode wire from fusing to base metal at the end of welding.
Anti-stick (Burnback) voltage is preset to proper conditions according to welding
methods and wire diameters at shipment, but it can be finely adjusted by activating
F2. The standard anti-stick (burnback) voltage is preset to “0”. When the voltage is
set in the negative direction, it decreases. When the voltage is set in the positive
direction, if increases. The fine adjustment range is 0 V to +9.9V.
(3) Setting of Pre-flow Time: F&*
(4
a
Pre-flow time can be adjusted by F6 using F key [10]. The setting range is 0 to 10
seconds,
Depending on the gas solenoid control configuration of the Cobramatic, this time
‘Will be added’ to the time set by the Cobramatic settings. This time can also be
used 1п place of the pre-flow time setting of the Cobramatic. Please reference
Cobramatic owners manual for details.
Setting of Result Display Holding Time: F8
After completion of welding, the average value of output current and output voitage
for last one second blinks for about 5 seconds, but the result display holding time
can be set by F8 using F key M0]. The setting range of result display holding time is
0 seconds to 60 seconds.
Arc voltage direct detection ON/OFF selection: F12
When using an extension cable results in abnormal generation of spatter or when
unstabie welding is caused from maifunction of puise weld, use a voltage detection
cable for directiy detecting arc voltage(-). When using a welding extension cable
that is more than 100ft [30m] long, use an arc voltage direct detection cable. This
direct connection will be necessary to sense precise welding voltage for stable
welding. Connect between base metal and Wire Feeder Cabinet or the direct
voltage detection (-) termina! inside the welding power source.
After connecting the voltage detection cabie, activate the function of voltage direct
detection by setting F12 to “on”. The function is preset to “oFF” (invalid) at factory.
NOTE: When using the equipment with such as brush for feeding parts like a
turn table, connecting the voitage detection cable to the terminal for the base
metal power cable after setting F12 to “on” is recommended.
CobraMig400P Owner's Manual - Page 37
10. OPERATION (continued)
(6) Fine Adjustment of Pulse Peak Current
The unit puise conditions (puise peak current/time and base current) at pulse
welding is set properiy according to welding method and wire diameter, but you can
make the fine adjustment to obtain the optimum conditions of unit pulse according
to the wire brand or welding position.
© The finely adjustable range of pulse peak current is 0 A to +150 A. The peak
current is set by 1A.
® The finely adjustable range of pulse peak time is 0 ms to £1.5 ms. The pulse peak
time is set by 0.1 ms.
® The fine adjustable range of base current is 0 A to £60A. The base current is set
by 1 À.
In function mode, when pressing the DISPLAY CHANGE key [7] during the fine
adjustment of pulse width, the DISPLAY CHANGE lamp lights up (located at the
upper left of the DISPLAY CHANGE key). Under this condition, you can switch the
fine adjustment value shown in the right display to the modulus (the value which is
subtracted or added the fine adjustment value from the standard value). When
pressing the DISPLAY CHANGE key, you can return to the fine adjustment value
display mode.
[Example of Fine Adjustment of the Unit Pulse Conditions]
When making a fine adjustment of the unit pulse conditions, adjust the pulse peak
time first. Take longer fine adjustment time when large droplet and unstable arc
(droplet transfer) occurs. Take shorter fine adjustment time when sharp tip of wire
and extremely strong arc occurs. Adjust the pulse peak current following the same
steps as puise peak time adjustment.
[Precaution for the Fine Adjustment of the Unit Pulse Conditions]
Maximum pulse peak current which can be output varies depending on the type
(capability) of welding machine or arc load. When the pulse peak current finely
adjusted exceeds the maximum pulse peak current, the preset pulse peak current is
not output.
CobraMig400P Owners Manual - Page 38
10. OPERATION (continued)
NOTE: When the unit puise conditions change significantly, there may be a possibility of
difference between the preset current value and the output current and an impossibility of
appropriate synergic fine adjustment.
(6-1) Fine adjustment of Pulse Peak Current : F13*
The fine adjustment of pulse peak current can be achieved by activating F13 using the F key [10].
The value which is subtracted or added the fine adiusting value from the standard value of the
pulse peak current is output. At the wave pulse welding, the high pulse condition (H. pulse) is
adjusted.
(6-2) Fine Adjustment of the Pulse Peak Time: F14*
The fine adjustment of pulse peak time can be achieved by activating F14 using the F key [10].
The value which is subtracted or added the fine adjusting value form the standard value of the
pulse peak time is output. At the wave pulse welding, the high pulse condition (H pulse) is adjusted.
(6-3) Fine Adjustment of the Base Current: F15*
Fine adjustment of base current can be achieved by activating F15 using the F key [10]. The value
which is subtracted or added the fine adjusting value from the standard value of the base current is
output.
(6-4) Fine Adjustment of L Pulse Peak Current: F16*
The fine adjustment of low pulse condition (L pulse) peak current at wave pulse welding can be
achieved by activating F16 using the F key [10]. The value which is subtracted or added the fine
adjusting value from the standard value of the L pulse peak current is output as L pulse peak
current.
(6-5) Fine Adjustment of L Pulse Peak Time: F17*
The fine adjustment of L pulse peak time of the second pulse condition at wave pulse welding can
be achieved by activating F17 using the F key [10]. The value which is subtracted or added the fine
adjusting value from the standard value of the L pulse peak time is output as L pulse peak time.
(6-6) Fine Adjustment of L Pulse Base Current: F18*
The fine adjustment of the pulse base current of the second puise condition at wave pulse welding
can be achieved by activating F18 using the F key [0]. The value which is subtracted or added the
fine adjusting value from the standard value of the L pulse peak current is output as L pulse peak
current.
High pulse condition _
gh pulse condition... Low puise condition. eh puise condition |,
Example of current wave at wave pulse welding
CobraMig400P Owners Manual - Page 39
10. OPERATION (continued)
(7) Turbo Start ON/OFF Selection: F19
The welding power source has Turbo Start function by capacitor discharge, which
enable you to oblain good welding start. At poor welding start with bumback, setting
F19 10 "oFF" deactivates the Turbo Start function. The function is preset to "on™
(valid) at factory.
(8) Keypad tone ON/OFF Selection: F20
setting F20 to "oF F" deactivates key pad tone function. The volume of the key pad
tone can nol be adjusted,
10.22 Key Lock
Key lock ls a function to prevent the welding conditions from being changed by accidentally
operating keys and knobs on the front panel. Only the keys and parameter adjusting knobs
which are used for changing each parameters and modes can be protected. However, the
settings can be checked and confirmed by using the DISPLAY CHANGE key [7].
Holding down both the F [10] key and ENTER key
[15] simulaneously
Holding down both the F key [10] and ENTER key
[15] simultaneously for a while brings the keylock
condition, While keys are locked, the F lamp
{located at the upper left of the F key) blinks. Kay
lack can be cancelled by holding both the F key and
ENTER key simullaneously for a while again. Kay
lock cannot be cancelled by starting the machine up
again.
While keys are locked, the F lamp blinks
Even when the keys are locked, JOB MEMORY functions can be activated.
104.3 JOB MEMORY Function
The JOB MEMORY function enables welding conditions to be reproducible by storing the
welding conditions in memory inside power source and by reading out the stored data at any
time. The number of welding conditions that can be held in memory is up 10100,
MA caution
@ The welding conditions (electronic Information) stored by this function are susceptible
to occurrence of static electricity, impact, repair, etc., and there is a possibility that the
storage contents may be changed or lost. BE SURE TO MAKE A COPY FOR
IMPORTANT INFORMATION.
We shall not assume any responsibility for any change or loss of electronic information
| resulting from repair, which you should note in advance.
Once the machine enters the memory mode and read-out mode, all the key operations are
denied except the SAVE, LOAD, and ENTER keys. To exil he mode, press the LOAD kay [13]
If it is in the memory mode, and the SAVE key [14] if in the read-out mode. Memory can be
copied to a different condition number after reading the welding conditions to be copied:
CobraMigd00P Owner's Manual - Page 40
10, OPERATION (continued)
SAVE Function
Welding conditions being currently in use are stored in the memory inside the
welding power source,
# Holding the welding conditions in memory
(1) When pressing the SAVE key [14], the machine enters memory mode, the
SAVE lamp (located at the upper left of the SAVE key) lights up. See the
following picture. In the right display, the condition number “1° blinks and the
LED lamp of the welding condition number lights up. In the left display, the
setting value of welding current preset to the condition number "1" appears.
Under this condition, a condition number can be set while turning the
parameter adjusting knob [6].
AR : ne 3 CobraMig
COE IN
Walding Current setling value held in memory Condition number bénks
In the: evant that any memory data is already preset to the condition number
you selected, the WELDING METHOD lamp and etc. also light up. If no
memory data is preset lo he condition number you selected, *- - =" blinks In
the left-side display. In this case, the system skips the parameter check
condition of Step (2) and jumps to Step (31.
Cobrabig
(2) When pressing the ENTER key [15] after setting the condition number, the
ENTER lamp blinks (located at the upper left of Ihe key). Under this condition.
you are allowed to confirm the setting value of the parameter presel to he
condition number by using the DISPLAY CHANGE key [7]. The setting value
of the parameter vou selected blinks.
NOTE: In the save mode, you can not change the welding condition
number or select any memory/readout mode. To reset the condition
number, press the SAVE key [14], then return to the step (1). To quit the
setting and exit from the memory mode, press the LOAD key [13].
(3) Pressing the ENTER key [15] again holds the data in memory and allow you lo
exit from the memory mode.
CobraMig4O0P Owner's Manual - Page 41
10. OPERATION (continued)
(2) LOAD Function
The welding conditions stored in memory are read out from the memory inside
welding power source,
NOTE: The welding conditions currently used can be overwritten with the
welding conditions read out. When you want to save the welding conditions
that have been used until now, preset the welding conditions to any condition
number, then carry out readout.
® Reading out the preset welding conditions
(1) When pressing the LOAD key [13], the machine enters the readout moda,
LOAD lamp (located at the upper left of the LOAD key) lights up. See the figura
below. The condition number “1” In the right-side display blinks and the JOB No.
LED lamp lights up. In the left-side display, the setting of welding current preset
to condition number “1° lights up. Under this condition, à condition number can
be set while tuming the parameter adjusting knob [6].
Welding Current held in memory Condition blinks
In the event that any memory data is preset to the condition number you
selected, the WELDING METHOD lamp and etc. also light up. When no
memory data is preset to the condition number, = = =" in the left-side display
blinks, See the figure below,
АД Li INS 3 Cobrar ha
|
Г M av
7 IFA E
° Же ГВ
- E LJ -
[2) When pressing Ine ENTER key (15) after setting the condition number, the
ENTER lamp (located at the upper laff of the kay) blinks. Under this condition,
you are allowed to confirm the setting of each parameter you want to read out by
using the DISPLAY CHANGE key [7]. The setting of the parameter you selected
blinks.
NOTE: You are not allowed to change condition number or select a
welding method, etc. To reset the condition number, press the SAVE key
[14], then return to the step (1). To quit the setting and exit from the
readout mode, press the SAVE key [14].
(3) When pressing the ENTER key [15] again, you can read out the preset welding
conditions and the LOAD lamp continues to blink to represent the readoul mode.
During the readout mode, the welding conditions of both the wire feed speed
(welding amperage) and the voltage can be adjusted by the Parameter adjusting
knob [EB] on the front panel of CM-400P, however the conditions can not be
CobraMigd00F Owner's Manual - Page 42
Press the LOAD key.
changed by the torch pot because i is disabled.
(4) To exit the readout mode, press and hold the LOAD key {13] more than 1
second. The LOAD lamp turns off and the wire feed speed (welding amperage)
can be changed by the torch pot back again.
® Operation flow in the memory mode
Press the SAVE key.
Y
Discontinue
Set the welding condition number while
turning the parameter adjusting knob.
Y
Press the ENTER key,
Y
\
Press the DISPLAY CHANGE key to check
Press the SAVE key.
Л
the parameter values.
selected.
Y
| Press the ENTER key.
Vv
> The memory mode quites.
e Operation flow in the readout mode
Press the LOAD key.
Y
Set the welding condition number while
turning the parameter adiusting knob.
A
Reset the welding condition number
The welding conditions are preset to the number you
Discontinue
Press the ENTER key.
Press the LOAD key.
Y
Y
Press the SAVE key.
Press the DISPLAY CHANGE key to check
the parameter values,
A
Y
Back to the previous state. |
Ё
ir
Vv
| Press the ENTER key.
Y
| *
mn =
Reset the welding
candition number
The loaded values are set as the current
parameters. The wire feed speed
adjustment by the torch pot is disabled.
Y
*
`
“
+=
Ç | Press and hold LOAD key more than 1 second.
The readout mode ends. The wire feed speed
adjustment by the forch pot is back to enabled.
CobraMig400P Owners Manual - Page 43
o
1 31
LE
10. OPERATION (continued)
Erasing the Welding Conditions
when you erase the welding conditions stored in memory, vou can select aliher
erasing all or erasing one.
® Erasing the welding conditions
(1) Turn off Ihe power switch and tum on the power switch with both the LOAD key
[13] and SAVE key [14] pressed. Release the keys after tuning on the power
swilch, and then "dEL" appear In the lef-side display. See the picture below.
AE = Ua à CT Te]
CL He | He
“dEL” is displayed, which indicates Condition number to be deleted blinks
the machine is in deletion mode
(2) Set the condition number to be deleted while tuming the parameter adjusting
knob [6]. When turning the knob counterclockwise, "ALL" appears in the right-
side display as illustraled below and you can erase all the welding conditions,
LLARL LE i CobraMg
[E] ARA E
"dEL” is displayed "ALL" blinks
NOTE: When the welding conditions are deleted by selecting "ALL",
welding conditions currently in use are also deleted. Consequently, all the
parameters return to the Initial settings.
(3) Pressing the ENTER key [15] blinks "dEL", Confirm the condition number again
and if you wanl to cancel erasing of the condition number, press any key other
than the ENTER key [15] to retum lo step (2). To quit the delete mode, tum off
the welding power source.
(4) Pressing the ENTER key [15] again delete the welding condition preset to the
condition number. When "End" is displayed after end of data deletion, turn off the
power switch, then start up the welding machine
NOTE: If you press the ENTER key twice in the deletion mode, you can not
recover the erased welding conditions. When you attempt to delete a
welding condition held in memory, make sure that the condition number
you want to erase Is surely selected.
CobraMigd DOP Owner's Manual - Page 44
10. OPERATION (continued)
10.2.4 Reselling lo Initial Values
The welding conditions that are currently used (including the welding condition currently used)
are all reset to Initial values. To reset to initial values, tum off the power switch and then turn on
tha power switch with both the POSA START key [12] and the F key [10] held down. When
"End"s appear in the displays after fuming on the power switch, release the keys, tum off the
power switch, then turn I on again. See the picture below.
See "SPECIFICATIONS"” for initial values of each parameter and function.
1025 Confirming software version
The version of software incorporated in the welding power source can be verified following
these steps, Turn on the power switch with only the F key [10] held down, After powering the
welding power source, the version number appears in the display.
(Example)
Right and left displays : "P30044" — Software number (P0044) Is displayed.
| Press the F key [10].
Lefi display : "001" — Main software version (Ver. 001) ls
displayed.
Right display : "000" « Sub software version is displayed.
| Press the F key [10].
Цей display : "-- -
Right display: "002" — Combination is displayed.
| Press the F key [10].
The welding power source starts up as usual and gets ready to perform welding.
10.2.6 Automatic Stop of Fan
The cooling fan automatically stops in 10 minutes after welding is finished and automatically
starts tuming when welding Is started, When powering the welding power source, the cooling
fan ls also tuming but automatically stops in 10 minutes when no operation ls carried out.
Low speed fan rotation will work for 3 minutes every 20 minutes without weld,
10.2.7 Reduction of Fan Noise
When the welding power source is not temporarily in use, the rate of fan rotation decreases so
that fan noise can reduce. This function works only for 250 A or lass output current,
CobraMig4O0P Owner's Manual - Page 45
11. APPLIED FUNCTION
11.1 How ito Solve an Error
A WARNING
Observe the following to prevent electrical shock.
When touching charging parts, critical electric shock and burn may occur,
@ Do not touch charging parts inside or outside the welding machine.
@ Grounding to the case of the welding power source should be performed by persons qualified
electric work and according to the laws and regulations in your area.
86 When touching the parts inside the welding power source, wait more than three minutes after
powering off all input power supply by turning off the line disconnect switch in the switch
box.
If an error occurs during use, an error code shown in the displays on the front panel blinks, then the
welding power source stops automatically. In this case, check the errors in the following table.
Displays on the front panel
No. Classification of errors
Left Right
1 cob rA Torch switch off state waiting
2 Е - 100 Control power supply error
3 Е - | 115 Error in the 115V outlet circuit
4 E- | 200 Primary / secondary current detection
error
5 E- 210 Error in the voltage detection
6 Е - 300 Thermal overload
7 E- ı 600 Battery low (warning)
8 Е - | 700 Output over current
9 Е - Эхх Microcomputer error
CobraMigd00P Owner's Manual - Page 46
11. APPLIED FUNCTION (continued)
1) cob rA Display
If “cob” and “rA” in the displays blink, it indicates the "Torch switch off state waiting".
When tuming on the power switch, the displays on the front panel shows “cob” and “rA for one
second, then the welding power source becomes operable. But, i the torch switch remains on before
tuming on the power switch, the safety circuit will function, the welding power source will hold a halt
condition, then the WARNING lamp and “cob” and “rA” shown in the displays will blink, In this case,
turn off the torch switch to reset the safety circuit and make the welding power source operable.
2) E-100 Display
If “E-" and - 100 the displays blink in, it indicates the * Control power supply armor =.
if there is an armor in the control power source, the waming lamp will light up and “E-" and “100” In the
displays will blink, then the welding power source will automatically stop. To cancel the error, start
the machine up again.
3) E-115 Display
i "E-" and "1157 in the displays blink, it indicates the "Error In 115V outlet circuit”.
i means thermal overload of the 115V outlet circuit instead of the Wire Feeder Cabinet controller.
when “E-" and "1157 are indicated in the displays, the welding power source will slop
automatically.
a) E-200 Display
If "E-" and "200°" in the displays blink, it indicates the * Pr many/Secondary current detection amor”.
If an error is detected in the current detecting area, “E-" and "200" in the displays will blink and the
welding power source will stop automatically. In this case, lum off the power switch, then tum i on
again after making sure that CNE and CNS on the printed circuit board P10264U are surely
connected.
5) E-210 Display
If “E-" and "2107 in the displays blink, it indicates the * Emor in the voltage detection wire ”.
If thera is &n armor in the plus voltage detection line (+), the waming amp will light up, "E-" and "210°
in the displays will blink, then the welding power source will stop automatically. In this case, after
checking to make sure that the Wire Feeder Cabinet control cable is not damaged and that CNG and
CN10 on the printed circuit board P10264T, CNZ3 and CN 24 on the printed circuit board P10264U,
and CN 1 on the printed circuit board P10264X are surely connected, start the machine up again.
And chack the OCV at output terminal of welding power source,
6) E-300 Display
if "E-" and "200° in the displays blink, it indicates the "Thermal overicad”
If the actual duty cycle exceeds the rated duty cycle of or temperature inside the welding power
source increases, “E- and “300° will blink and the welding power source will stop automatically. At
this time, the temperature lamp also will be lit. In this case, wait more than 10 minutes with the power
swilch pressed and the fan tumed. When restart welding, tum off the power switch and restore the
system after lowering the duty cycle and the welding current. Such action will cancel the error.
Repetitious welding without more than ten-minute rest may lead to damage to the welding machine.
Refer to Section 3.1, “Rated Duty Cycle” for the rated duty cycle of the welding power source,
CobraMig400P Owner's Manual - Page 47
11. APPLIED FUNCTION (continued)
7) E-600 Display —Refer to section 11.2—
if "E-" and "600" in the displays blink, it indicates the "Battery low (warning).
This welding power source uses batteries so that it can hold the welding conditions in memory even
when no operation is carried out for long time. “E-" and “6500” in the displays biink when the batteries
get low. “E-* and “600” are displayed only when the front panel and the welding power source are
temporarily not in use. To cancel the display of the error , press any key. Even when “E-“ and “600”
appear in the displays, welding can continued to be performed, but when the batteries run down,
the preset welding condition functions and the settings of functions are all erased. The last
welding conditions before power is applied to the welding machine can not be stored. Each
time power is applied to the equipment, ail the parameters are reset to initial values. Refer to
Section 12.4, * Replacement of batteries” for details.
8} E-700 Display
If “E-* and “700” in the displays blink, it indicates the “Output overcurrent”.
If an overcurrent or short circuit on the secondary output continues for more than one second during
welding, the WARNING lamp lights up, “E-" and “700” in the display blinks, then the welding power
source stops automatically. In this case, turn off the control power switch and check to make sure
that the welding current does not exceed the rated output value, or that there is no short circuit on the
output side such as a contact between the tip and the base metal, or a short circuit of the output
cables.
9) E-Oxx Display
If "E-* and “9xx” in the displays blink, it indicated the “Microcomputer error”.
There could be an error in the built-in microcomputer, Please contact your dealer immediately.
When contacting your dealer, you are required to provide the details of the problem you are facing.
CobraMig400P Owners Manual - Page 48
11. APPLIED FUNCTION (continued)
/\ WARNING
Observe the following to prevent electrical shock.
© Do not touch charging parts inside or outside the welding machine.
© Grounding to the case of the welding power source should be performed by persons
qualified electric work and according to the laws and regulations in your area.
& When touching the parts inside the welding power source, wait more than three minutes
after powering off all input power supply by turing off the line disconnect switch in the
switch box.
/A\ CAUTION
® Try to move the control cable which is pulled out from the automatic connection terminal
on the chassis father away from the welding power cable or the torch cable when making
an external connection. Otherwise, equipment failure may be caused by noise, etc., during
welding operation.
& Pull out only the wiring on the printed circuit board to outside.
11.2 External Connection of inside Terminal Block
When taking off the upper cover of the welding power source, you will find there is a 6P terminal
block (TM6P) on the chassis.
Refer to Section 12, "Parts layout” for the locations of the terminal blocks.
NOTE: Wait more than three minutes after turning off the line disconnect switch or no-fuse
breaker and the power switch on the front panel to remove the cover.
NOTE: Break the grommet with filter located on the rear side of the welding machine to
lead in the external connecting wires. When leading in the external connection wires, do
not touch the parts on the printed circuit board and the edges of the steel plate.
PERE
a i D © ‚©,
[GP terminal biock]
CobraMig400P Owner's Manual - Page 49
GP terminal block (TM 6P)
11. APPLIED FUNCTION (continued)
Pin No. Signal name Function
ol — @) AMMETER Terminals for connecting an ammeter.
Use the ammeter (400A/60mV, part number: 4403-057).
© — a VOLTMETER | Terminals for connecting a voltmeter. *1
Use the voltmeter (full scale 100V, part number; 4401-019).
(5) Unused
(6) Direct
When the welding cable is more than 100ft {30m] long, use this
terminal pin to directly connect the voltage detection cable to base
metal. Refer to Section 10.2.1 (5) “Arc Voltage Direct Detection
ON/OFF Selection” for details of direct detection.
Frecaution for connection with terminals on the terminal block
The wires from the terminal blocks should be twisted for each signals to avoid accidental operation.
Take care that the wires form the terminal blocks do not cross other signal wires from other welding
power source.
*1 Be careful that no-load voltage (100V or less) is applied to between the terminals during
welding.
CobraMig400P Owners Manual - Page 50
12. MAINTENANCE AND TROUBLESHOOTING
/N WARNING
To avoid electric shock, follow the below instructions.
6 Do not touch live electrical parts inside or outside the welding machine.
@ Turn off all of the line disconnect switches before touching the parts inside the welding
machine.
© Perform the maintenance checks periodically. If any damaged parts are found, only use the
welding machine after troubleshooting or repairing.
@ Only certified operators should maintain, inspect, or repair the welding machine.
@ When carrying out the maintenance, wait more than three minutes after powering off ail input
power supply by turning off the line disconnect switch in the switch box. Capacitor may be
discharging even after powering off all input power supply. Check to make sure that charging
voltage does not exist before carrying out the maintenance.
© This welding power source uses a high-frequency inverter system, be careful of accidental
connection of the line disconnect switch at input side.
6 Have qualified operators or the persons familiar with this welding power source test withstand]
voltage. And install a protective wall around the welding machine to keep away others from the
welding machine.
CAUTION
Rotating parts may cause injuries. Be sure to observe the following.
@ Only certified operators should maintain, inspect, or repair the welding machine.
@ Install a fence around the welding machine to keep others away from it.
@ Do not put your hands, fingers, hair and clothes near the fans and wire feed roll rotating.
/\ CAUTION
@ Do not touch the parts for the main circuit which are located inside the power
source, such as single-phase transformer, DC inductor, heat sink, etc.
immediately after welding is performed, as the parts are extremely hot, Wait
untii the parts cool down, when touching. Failure to observe the demand may
result in burn.
A CAUTION
@ The welding conditions (electronic information) stored using the JOB MEMORY keys are likely
to be affected by occurrence of static electricity, and there is a possibility that the preset data
contents may be changed or erased. We recommend taking notes of important data.
@ We shall not assume any responsibility for any change or erase of the electronic information
resulting from repair.
CobraMig400P Owner's Manual - Page 51
12. MAINTENANCE AND TROUBLESHOOTING (continued)
12.1 Carrying out Maintenance on the Welding Power Source
(1) Periodical checking
(2)
Periodically check the welding power source to ensure the safety of the equipment and the
efficiency of work.
® Daily checking the followings:
- No strange vibration, buzzing noise, and smell are generated from the welding power source.
- No excessive heat is generated from the cable connections.
- Fan functions properly when the power switch is turned on.
- The switches properly function.
- Connection and insulation of cables are surely made.
- There are no break in cables.
- Fluctuation of power source voltage is not large.
- Case Earth is surely connected. (Disconnection of the Case Earth may result in failure or
malfunction of the equipment.)
Checking the followings each three to six months:
- There is no damage inside the torch.
- There are no loose connections or no poor contacts caused from rust, on input side of the
welding power source and output side of the cables.
- There is no trouble with insulation.
- The welding power source is properly grounded.
- Built-up dust on the transistor or the cold plate on the rectifier may affect the equipments.
Take off the cover of the welding power source once a half year, then remove dust by blowing
moisture-free compressed air on each part.
- The dust protective filter located on the inlet of the fan does not clog, which may result in
damage to the welding power source. Be sure to inspect it periodically.
12.2 Precaution for Replacement of the Printed Circuit Board
2 Make sure that the connector number inscribed
on the printed circuit board matches the number
marked on the connector.
© Turn off the control power switch and line
disconnect switch before carrying out maintenance
on the welding power source, and wait three
minutes until the capacitors inside the welding
power source discharge.
e This welding power source uses a high-frequency
inverter system, be careful of accidental connection NOTE: Match the number on the printed
circuit board with that on the connector.
of the line disconnect switch at input side.
® Surely connect the connectors until the connector clicks. Failure to do so may result in damage
to the printed circuit board and the welding .
® With the connectors disconnected, do not turn on the power switch on the front panel.
® Do not use organic solvent such as thinner, trichloroethylene, gasoline, etc., to clean the plastic
cover and carrying handle of the welding machine. Deformation and flaw may result from the
adherence of the organic solvent.
CobraMig400P Owners Manual - Page 52
12. MAINTENANCE AND TROUBLESHOOTING (continued)
12.3 Insulation Resistance Test
/\ WARNING
Ohserve the following to prevent an electrical shock.
When touching charging parts, a critical electric shock and burn may occur.
© Have qualified operators or the persons familiar with this welding power source measure
insulation resistance and test withstand voltage . And install a protective wall around the
welding machine to keep away others from the welding machine. Check to make sure that
charging voltage does not exist before carrying out the maintenance before carrying out
measurement of insulation resistance and withstand voltage test.
When measuring insulation resistance and testing withstand voltage, follow the steps below. And,
refer to the schematic diagram, parts layout, and parts list for maintenance.
1.
2.
3
4.
5,
Disconnect the grounding cable (wiring number: 80) from the earth.
Short-circuit on AC side and commutation side of DR1.
Short-circuit between TR1 (C1) and (E1), TR2(C2) and (E2), TR3(C2) and (E2), TR5(C2) and
(E2), TR5(C1) and (E1).
Short-circuit between DR2 (Anode) and (Cathode), DR5 (Anode) and (Cathode).
The circuit protector is tumed on.
Be sure to reconnect the cables after carrying out measurement of insulation resistance and
withstand voltage test.
12.4 Replacement of Batteries
This welding power source uses lithium batteries to hold welding conditions in memory. The life of
the batteries differs depending on the environments. "E-* and “600" shown in the displays on the
front panel blinks when the batteries gets low. Replacement of the batteries every 5 years or so
are recommended even when “E-“ and “600” do not blink. Replace the batieries following the
steps:
1.
2.
Tum off the line disconnect switch in the switch box or the no-fuse breaker and the power
switch of the welding power source.
After more than three minutes, remove six screws that secure the front panel, and then pull
the front panel out. Do not pull it forcibly. With the wiring inside the equipment disconnected,
do not turn on the power switch. Failure to do so may result in damage to the welding power
source.
Remove the connectors on the P.C.B.P10263R to replace the printed circuit board. Refer to
the position for "Rear side of the front panel” in Section 12.7, “ Parts List”.
Insert the disconnected connectors into the P.C.B.P10263R.
Screw the front panel in position.
CobraMig400P Owner's Manual - Page 53
12. MAINTENANCE AND TROUBLESHOOTING (continued)
12.5 Troubleshooting
When an error code is displayed, refer to Section 11.1, “How To Solve an Error”.
® Check the troubleshooting information listed below before contacting your dealer for service.
No. Trouble Cause Solution
The power Never turn it on again. Contact your dealer.
switch on the
1
front panel is
tripped.
The main When turning on the Trouble with PL1. Inspect PL1.
power lamp power switch, the
PL1 will not displays light.
9 light. When turning on the The line disconnect switch in | Inspect the power
power switch, nothing | the switch box is not turned box.
appears in the display. | on.
The input cables are not Inspect the input
surely attached. cables.
When turning | The main power lamp | Refer to No.2 in this list.
on the power | PL1 will not light.
switch, Shortage of the input voltage | Check for proper
nothing input voltage.
3 |appears in the Trouble with the power After inspecting
display. PL1 lights. circuit. PCB P10263Q
and P10355X,
replace them if
necessary.
When turning on the power switch, the Refer to Section 11.1, “How
4 WARNING and TEMPERATURE lamps | To Solve an Error”.
light up and an error code appears in
the display,
Shield gas is not generated when the The discharge valve of the Open the valve.
torch switch is pressed. gas cylinder is closed.
Lack of gas pressure of the Check for proper
gas cylinder. gas pressure.
5 Trouble with the gas Inspect the gas
electromagnetic valve SOL. electromagnetic
valve SOL.
Disconnection of the torch
switch cable or incomplete
insertion to receptacie.
Refer Cobramatic
owners manual.
6 | Shield gas does not stop.
Trouble with the gas solenoid
valve SOL
Check for
operation of the
gas solenoid valve
of Wire Feeder
Cabinet.
When the torch switch is pressed, no- Trouble with the inverter Turn off the power
load voltage is not output but shield gas | main circuit switch, then
is generated. contact your
dealer.
Trouble with the control
circuit
After inspecting
PCBP30044P or
P10352U replace
it if necessary.
CobraMig400P Owner's Manual - Page 54
12. MAINTENANCE AND TROUBLESHOOTING (continued)
No. Trouble Cause Solution
Current and voltage Trouble with the control After inspecting PCB P30044P or
can not be set. circuit P10352U and replace it if necessary.
8 Error in wire voltage inspect connections of CN23 and CN
detection 24 on PCB P10352U or CN1 on PCB
P10264X.
Wire is not fed. Incomplete insertion or After inspecting the contacts of the plug
breaking of the control and cable, replace them if necessary.
cable for Wire Feeder
9 Cabinet
Trouble with the motor
control circuit
After inspecting PCB P30044Q, replace
it if necessary.
CobraMig400P Owner's Manual - Page 55
This page is intentionally left blank.
CobraMig400P Owners Manual - Page 56
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13. PARTS LIST
® Please contact your dealer to order parts. (See the back cover for telephone and fax numbers, and
mailing addresses.)
Symbol Part No, Description Specifications Q'ty | Remarks
NF 4614-104 ¡Circuit protector 119-0637(480V 75A) 1
LF 4519-037 [Line filter FS5681-50-99 1
PL1 4600-341 [Pilot lamp NPA10-2H-WS 1
DR1 4531-717 |Diode module DFA150AA160 1
DR2~7 4531-119 [High speed diode module DSE! 2x101-06A 6
DR8 4531-505 |Diode 521-60 1
TR1~4 4534-528 11GBT module CM200DY-12NF 4
TRS 4534-529 HGBT module SKM300GAL128D 1
SCR1 4530-412 |Thyristor SG25AA20 1
CT1,3 100-0004 Current transformer W-WO3029A 2
CT2 4406-009 ¡Hole current detector HA400S3EH 1
T1 P10264B00 Inverter transformer P10264B00 1
T2 4810-351 ¡Auxiliary transformer W-WO2821A 1
L1 P10352B00 ¡DC reactor P10352800 1
E 4739-497 |Ferrite core E04RA400270150 6
L4 P10322L00 [input reactor P10322L.00 1
L5 P10352C00A [Choke coil P10352C00 1
L11,12,15 1 4739-543 |Ferrite core E04RA310190100 3
THP1 4258-046 [Thermostat US-602AXTTL 120€ 1
THP2,3 4614-057 ¡Thermostat 67-080 2
THP4 4258-033 [Thermostat 67L070 1
FM1,2 P30016L00 Fan P30016L00 2
FM3 100-0364 ¡Fan 4 7 10KKL.-05W-B50-B00 1
SH 4403-116 [Meter shunt KY400A 400A/60mV 1
TM1 Missing number
TM2 4739-504 {Terminal block 1810-01 6P 1
R1~4 100-0175 ¡Surge absorber ENE911D-14A 4
R6 4509-819 [Cement resistor 405H 2000 1
R8-13,17 | 4509-704 ¡Carbon resistor RD1/4W 1kQJ 7
R14,15 4509-138 |Metal film resistor RNP-50SA 50F 2
R16 4509-916 [Cement resistor T20SH 2.2QJA 1
R18 4509-107 |Carbon resistor RS2W 150 1
R19,20,21| 4509-128 [Metal oxide film resistor RSZ2B 200K0J 3
R23,24 ¡Missing number
R25,26 4509-883 [Cement resistor 20SHI 20k0J 2
R27a-d 4504-321 ¡Non-inductive resistor NCRF22V 100 4
R28 4504-322 ¡Non-inductive resistor NCRF22V 200 1
R29 R30 4509-704 Carbon resistor RD1/4W 1kQJ 2
R31,R32 4509-922 Cement resistor 20SH TONJA 2
C2 4518-530 Fiim capacitor US16X154JAASA 1
C4,C5 4518-542 Film capacitor US20X472JAASA 2
C7,C12 4518-402 [Film capacitor 0.47uF 50V 2
C8,C9 4511-344 [Aluminum electrode capacitor 4G0LGSN3300MBD13 2
C10 4518-533 |Film capacitor US20X473JAASA 1
CobraMig400P Owner's Manual - Page 59
13. PARTS LIST (continued)
Symbol Part No. Description Specifications Q'ty Remarks
C11 4518-528 Film capacitor US20X103JAASA 1
C13 4517-455 ¡Ceramic capacitor 0.01pF 2kV 1
C14 100-0177 [Aluminum electrode capacitor ¡LWAZ2N601MSMAZO 1
CON1 4731-076 Metal receptacle MSB102A20-275 1
F1 100-0392 {Fuse 0234005 1
PCB1 P10352U00 ¡Printed circuit board P10352U00 1
PCB2* P30044P00 [Printed circuit board P30044P00 1 ¡Referto “NOTE” below.
PCB3 P10263Q00 |Printed circuit board P10263Q00 1
PCB4 P10265V00 ‘Printed circuit board P10265V00 1
PCBS P10264T00 ¡Printed circuit board P10264T00 1
PCB6 P10352M00 |Printed circuit board P10352M00 1
PCB7 P30044Q00 Printed circuit board P30044Q00 1
PCBS P10263R00 ¡Printed circuit board P10263R00 1
PCBS P30044R00 {Printed circuit board P10264R00 1
PCB10 P10264X00 ¡Printed circuit board P10264X00 1
PCB11 P10355X00 [Printed circuit board F10355X00 1
PCB12 | Р10264500 [Printed circuit board F10264500 1
D 4739-474 ¡Grommet with film W-W02805 2
2 4735-038 Knob K-100 22RSB 1 Adjusting knob
© 100-0400 ¡Cap K-100 22CSB 1
4 4739-475 |Rubber foot C-30-RK-3220 4
5) P30044W02 ¡Control panel sheet P30044W02 1
© 100-0393 {Blind bush 8811878 2
7 P5801G03 [Carrying Handle P5801G03 2
8) P10263G12 ¡Bush P10263G12 4
o P10264J01 [Front cover P10264J01 1
10 P10263J02 [Control panel cover P10263J02 1
4 4734-007 Machine socket DIX BE 50/70 2 Output terminal
Plug for 4b| 4734-025 [Power cable connector [DIX SKK 70 2 |For 60mm- cable
*NOTE: When ordering a printed circuit board P30044P00, provide the software version on a
abel below a nameplate attached to the rear side of the welding power source.
P30044 Ver. 167 ¿HH 000
ооо
Replace the HEHE with software version.
CobraMig400P Owner's Manual - Page 60
14. SPECIFICATIONS
14.1 Specifications
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CobraMig400P Owner's Manual - Page 61
14.2 External View
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CobraMigd400F Owner's Manual - Page 62
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CobraMigl00P Cenor's Manual - Page 64
15. SERVICE AND SUPPORT
Please contact your local dealer for service. (See the back cover for telephone numbers, fax numbers,
and mailing addresses.)
NOTE:
1) See Section 12, “MAINTENANCE AND TROUBLESHOOTING” before contacting your
dealer for service.
2) When contacting your dealer for service, you are required to provide the following
information:
® Address
e Name
@ Telephone number
se Product model
e Manufacture year
© Serial number
© Software version number
® Details of troubles
- MODEL: 186-004
+ SERIAL NO. XXXXXXXX
- DATE: 20XX Г A
P30044 Ver #4 ##5#.000
CobraMig400P Owner's Manual - Page 65
WARNING
atectrada with sidn or wet clothing.
© Insulale yourself from work and
ground.
9 Do notiouch electricafiy iva paris or | © Kaep Rammakia materials away. e Wear eye, ear end body protection.
AVISO DE
PRECAUCION
© Ka toque las partes o [os electrodos
bals carga con la piat à ropa mois-
da.
& Alslesa del trabajo y de la Lerra,
e Rantenga si materia! combustible
fuera del 4rea de trabajo.
© Protéjace les ojos, los aides y ai
ешо.
French
6 Ne lalezez mi ls pana ni des vête-
& Gardez à l'écart de leut matériaï
& Protégez vos yeux, vos trollies et
menta mouiliés entrar ee equino! Enflammabls. voire comps
ATTENTION | avecdespiicessoustension,
@ isglez-vous du travail ot de fa Lema.
German © Berühren Sie keine siromitirenden | © Enternen Sig brennbarres Material! | e Tragen Sie Augen-, Ohren- and Kör-
Teile oder Elektroden mit hram perschutz!
WARNUNG Körper oder feuchter Kieldungl
© Isolieren Sie sich von den
Elektroden und dem Erdboden!
Portuguese - e Käo togue partez pétricas e elee- | © Manterdta inflamévais Бог guarda- | & Uce protegía para a vista, nuvida e
ATE NCAO todos cam a pele ou roupa maika- dos. corpo,
da.
q Eole-5e da pera e tama.
J a > ‚ 0 APORRES, ZUENCE е APITNUEDORTOBRETEA o El. HATO SCABRELTTF
+ er Ef 7RPANLETMNENTIE, HENELTUGYELA. être
IL si 3 e AIM? -I55R mire:
RT SECLTFÉL,
Chinese
e ARALAR BEER PELEAR. ед ВН. FRAEOBREAR.
OMPENORAMENIARE,
Korsen
_ e rx ENG HE Vu == | eE EE Ke AFÍX) DE, | ©, HA ВЫ SEE
©! © que UN des chuza, чае Ма.
e ZX EXf Fas opie,
Krable
8 + Ud ra Dra себ Ч @ Розы МЫ Ab UE Ni 6 | Gly Gis ie LB у y e
ya 3 ее de TON A Ay Aa
AM a, J ita
‚вай dap e YE вой ©
READ AND UNDERSTAND THE MANUFACTURER'S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE
USED AND FOLLOW YOUR EMPLOYER'S SAFETY PRACTICES.
SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPD Y LOS
CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS OE SEGURIDAD DE SU SUPERVISOR.
LISEZ ET COMPRENEZ LES INSTRUCTIONS OU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A
ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE OE VOTRE EMPLOYEUR.
LESEN SIE UND BEFOLGEN SIE OfE BETRIEBSANLEITUNG DER ANLAGE UNO DEN ELEKTRODENEINSATZ DES HER-
STELLERS. DIE UNFALLVERHOTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.
CobraMig400P Owner's Manual - Page 66
e Keep your head net of fumes. Tura power eft bejara servicing. @ Da nod aparate with panal open or
© Use ventilation or exhaust to guards off.
remova fumes from breathing zona. WAR N | N G
e Los humos fuera da la Tora Bo 12% | e Desconaciar el cable do all- © Ha cperar con panel ahierto à Spanish
prración. mención de poder de la máquina puedas quitadas. AVISO D E
e Mantenga la cabura fuere de los antes de Iniciar evalquier servielo,
humos, Utiiica ventilación a PR ECAU CION
aspiración para gases,
© Gardez fa tts A I'écarl des lumées. | © Débranchez le courant avant l'entre- | € K'opérez pas avac les panneaux Franch
© Utlilzar en ventitatanr cu un aspira- tien, ouverts eu avec les dispasttits de
teur pour ter les fumées des zones protection entevés. Al ] ENTION
dz travail.
e Vermehien Sia das Elnatmen von © Strom vor Wartungsarbeiten e Anlage nie ohne Schubkgehäuse German
Scirwelbracchi abtchalten! (Hetrtrost valio ib edor innenschutrvendelduno ln
e Samen Sie f0r guia Ba- und nen; Maschine anhaklten!} Betrieb setzen! WA R N U N G
Entifftung des Arbaltenfatzes!
e Rantenka cou rosto de fumaga. 6 NED opero com as tampas emmidas. | @ Mamenhe-es afestado des partes Portuguess ~
© Uss ventilarso e exhausto para © Desique a comente antas de fazer moventes. ATE N AO
remover fumo da zona resplratéris. servico. 6 HEo opere com os palnals abertos CG
e Kin tegue es partos elétricas nuas, du guardes removidas.
6 E-.L75MEMTEIELT Q APT. НАС O RAP N-EBNALLES
Japanese
Fête FORCE. ETRERS v FE TRRBFELEVTTEL, x us
CRTPRELH+SEELTTFEL, АТО FEEL, 4 ЗК
o HERVER. е КИЕВ, CABENARANE A Zen || CHinose
ELTA A N No
Korean
© IEA ое вене à 1930 ANNE ca, e 40 YE ya Ea:
o TENYcare ENE aja, o ——
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ЭН Авена.
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МАЯ Je gay dual) dad ©] Aue 3 LAB JA AL4 AA ae Ghd SUCHE Agel la RAY
EA bal Mia gp Я Ааа Даа © == „Ayla DE Lea г
Aad dist A UML ye ¿AN ag E Ja
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LEÍA E COMPREENDA AS INSTRUGÚES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS
PRÁTICAS OE SEGURANÇA 00 EMPREGAOOR.
ÉEIRRPRHOX —I-ODERÉELCHZ, ÉTHMLTTEL, TLTREOREABLEU TT EL,
EN ES E ENS TALA E A ENS DAL A EXE ANA E, EMBATES REMITE.
Оо) АННО сен EME LAIA FAR ZX Hag Testa] ugh
«Jasdl qual QU pit estelas Ry y Ullaniaa! JE Aly cas! eg Will call Clade gl) cea | В
CobraMig400P Owners Manual - Page 67
LIMITED WARRANTY
Effective October 1, 2006
This warranty supersedes all previous MK Products warranties and is exclusive,
with no other guarantees or warranties expressed or impbed,
LIMITED WARRANTY - MEK Products Inc. Irving, Califoria warmants
that all new and unused equipment fumished by ME Products is Tree
from defects in woromanship and material as of the time and place of
delivery by MK Products. No waranty is made by MK Products with
respect to trade Boceisones or other deme manufactured by others
Such trade accessories and other items are sold subject to the
warranties of their respective manufacturers, if ary.
ME Products” waranty does not apply to components having normal
useful fe of less than one (1) year, such as relay points, wire conduit,
fungsien, and welding qui parts thal Come in contact ah de véaldmng
wire, including gas cups, gas Cup insulators, and contact tips where
Faure does Aoû result from defect in workmanship dr material,
ME Products shall, extlishely remedy the limited warranty or any
dubs with respect to the quality of goods, based upon the following
COC
(1) repair
{2} reclacarnent
(3) where authoited à writing by MK Products, the reasonable cost of
repair or replacement dl our Irvine, California plant.
As a matter of general policy only, MK Products may honor an original
user's warranty Claims on waranted equipment in tiva event of failure
resting from a defect within the following periods from the date of
delivery of equipment to the original user:
1. Power Supplies and Wine Feed Cabinets aus: 3 YEBIE
2. Weldheads, Positioners, Prince XL and Prince XL Spool Guns,
Python, СобгаМАХ, Cobra SX, Cobra MX 1 year
1. Sidewinder” Spool Gun, Prince 5G Spool Guns,
Modules 180 days
4, Repairs [Exchanges Parts ceca seis, 90 days
16862 Armstrong Ave
brvine, CA 92606
Tod (349) BEI-1234
ak K Fax (040) 474-1428
PRODUCTS www.mkproducis com
Classification of any item into the foregoing categories shall be at the
sole discretion of HK Products Nobification of any failure must be
made in writing within 30 deys of such failure,
A copy of the invoiie showing the date of sale must accompary
products retumed for warranty repair or reptacement,
All equipment returned to MK Products for senior must be property
packaged to guard against damage from shipping. MK Products will
nck be responsible for ary damages resulting from shipping.
Normal surface transportation charges (one way) for products
returned for waranty repar of replacement will be bone by MK
Produits, except for products sold to forson markets.
ANY EXPRESS WARRANTY NOT PROVIDED HEREIN AND ANY
IMPLIED WARRANTY, GUARANTY, OR REPRESENTATION AS TO
PERFORMANCE, AND ANY REMEDY FOR BREACH OF CONTRACT
WHICH, BUT FOR THIS PROVISION, MIGHT ARISE BY IMPLICATION,
OPERATION OF LAW, CUSTOM OF TRADE, OR COURSE OF DEALING,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF
FITNESS FOR PARTICULAR PURPOSE, WITH RESPECT TO ANY AND
ALL EQUIPMENT FURNISHED BY MK PRODUCTS, 15 EXCLUDED AND
DISCLAIMED BY MK PRODUCTS.
EXCEPT AS EXPRESSLY PROVIDED BY MK PRODUCTS IN WRITING,
MK's PRODUCTS ARE INTENDED FOR ULTIMATE PURCHASE Ву
COMMERCIAL/INDUSTRIAL USERS AND FOR OPERATION EY
PERSONS TRAINED AND EXPERIENCED IN THE USE AND
MAINTENANCE OF WELDING EQUIPMENT AND NOT FOR
CONSUMERS OR CONSUMER USE. MK PRODUCTS” WARRANTIES DO
NOT EXTEND TO, AND NO RESELLER 15 AUTHORIZED TO EXTEND
MK PRODUCTS WARRANTIES TO ANY CONSUMER.
USE OF OTHER THAN GENUINE MK PRODUCTS CONSUMABLES,
PARTS, AND ACCESSORIES MAY INVALIDATE YOUR PRODUCT
WARRANTY.
PRODUCTS
16882 Armstrong Ave.
Irvine, California 92606
Tel (949) 863-1234 Fax (949) 474-1428
www. mkproducts.com
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