Lincoln Electric CV-300 User Manual

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Lincoln Electric CV-300 User Manual

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IM500-A

IDEALARC® CV-300

October, 2002

 

 

For use with machine Code Numbers 10180, 10181

 

Safety Depends on You

Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thoughtful operation on your part. DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT. And, most importantly, think before you act and be careful.

Date of Purchase:

Serial Number:

Code Number:

Model:

Where Purchased:

OPERATOR’S MANUAL

Copyright © 2002 Lincoln Global Inc.

World's Leader in Welding and Cutting Products •

Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

i

SAFETY

i

WARNING

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.

The Above For Diesel Engines

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

The Above For Gasoline Engines

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box 351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

FOR ENGINE powered equipment.

1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running.

____________________________________________________

1.b.Operate engines in open, well-ventilated areas or vent the engine exhaust fumes

outdoors.

____________________________________________________

1.c. Do not add the fuel near an open flame welding arc or when the engine is running.

Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on contact with hot engine parts and igniting. Do not spill fuel when filling tank. If fuel is spilled, wipe it up and do not start engine until fumes have been eliminated.

____________________________________________________

1.d. Keep all equipment safety guards, covers and devices in position and in good repair.Keep hands, hair, clothing and tools away from V-belts, gears, fans and all other moving parts when starting, operating or repairing equipment.

____________________________________________________

1.e. In some cases it may be necessary to remove safety guards to perform required maintenance. Remove guards only when necessary and replace them when the maintenance requiring their removal is complete. Always use the greatest care when working near moving parts.

___________________________________________________

1.f. Do not put your hands near the engine fan.

Do not attempt to override the governor or idler by pushing on the throttle control rods while the engine is running.

___________________________________________________

1.g. To prevent accidentally starting gasoline engines while turning the engine or welding generator during maintenance work, disconnect the spark plug wires, distributor cap or magneto wire as appropriate.

1.h. To avoid scalding, do not remove the radiator pressure cap when the engine is hot.

ELECTRIC AND MAGNETIC FIELDS may be dangerous

2.a. Electric current flowing through any conductor causes localized Electric and Magnetic Fields (EMF). Welding current creates EMF fields around welding cables and welding machines

2.b. EMF fields may interfere with some pacemakers, and welders having a pacemaker should consult their physician before welding.

2.c. Exposure to EMF fields in welding may have other health effects which are now not known.

2.d. All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit:

2.d.1. Route the electrode and work cables together - Secure them with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode and work cables. If the electrode cable is on your right side, the work cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close as possible to the area being welded.

2.d.5. Do not work next to welding power source.

Mar ‘95

ii

 

SAFETY

 

ii

 

 

 

 

 

 

 

 

 

ELECTRIC SHOCK can

kill.

3.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free

gloves to insulate hands.

3.b. Insulate yourself from work and ground using dry insulation. Make certain the insulation is large enough to cover your full area of physical contact with work and ground.

In addition to the normal safety precautions, if welding must be performed under electrically hazardous conditions (in damp locations or while wearing wet clothing; on metal structures such as floors, gratings or scaffolds; when in cramped positions such as sitting, kneeling or lying, if there is a high risk of unavoidable or accidental contact with the workpiece or ground) use the following equipment:

Semiautomatic DC Constant Voltage (Wire) Welder.

DC Manual (Stick) Welder.

AC Welder with Reduced Voltage Control.

3.c. In semiautomatic or automatic wire welding, the electrode, electrode reel, welding head, nozzle or semiautomatic welding gun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electrical connection with the metal being welded. The connection should be as close as possible to the area being welded.

3.e. Ground the work or metal to be welded to a good electrical (earth) ground.

3.f. Maintain the electrode holder, work clamp, welding cable and welding machine in good, safe operating condition. Replace damaged insulation.

3.g. Never dip the electrode in water for cooling.

3.h. Never simultaneously touch electrically “hot” parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders.

3.i. When working above floor level, use a safety belt to protect yourself from a fall should you get a shock.

3.j. Also see Items 6.c. and 8.

ARC RAYS can burn.

4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards.

4.b. Use suitable clothing made from durable flame-resistant material to protect your skin and that of your helpers from the arc rays.

4.c. Protect other nearby personnel with suitable, non-flammable screening and/or warn them not to watch the arc nor expose themselves to the arc rays or to hot spatter or metal.

FUMES AND GASES can be dangerous.

5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing these fumes and gases.When welding, keep your head out of the fume. Use enough ventilation and/or exhaust at the arc to keep

fumes and gases away from the breathing zone. When welding with electrodes which require special ventilation such as stainless or hard facing (see instructions on container or MSDS) or on lead or cadmium plated steel and other metals or coatings which produce highly toxic fumes, keep exposure as low as possible and below Threshold Limit Values (TLV) using local exhaust or mechanical ventilation. In confined spaces or in some circumstances, outdoors, a respirator may be required. Additional precautions are also required when welding on galvanized steel.

5.b. Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing, cleaning or spraying operations.

The heat and rays of the arc can react with solvent vapors to form phosgene, a highly toxic gas, and other irritating products.

5.c. Shielding gases used for arc welding can displace air and cause injury or death. Always use enough ventilation, especially in confined areas, to insure breathing air is safe.

5.d. Read and understand the manufacturer’s instructions for this equipment and the consumables to be used, including the material safety data sheet (MSDS) and follow your employer’s safety practices. MSDS forms are available from your welding distributor or from the manufacturer.

5.e. Also see item 1.b.

Mar ‘95

iii

SAFETY

iii

WELDING SPARKS can

cause fire or explosion.

6.a. Remove fire hazards from the welding area.

If this is not possible, cover them to prevent the welding sparks from starting a fire. Remember that welding sparks and hot

materials from welding can easily go through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site, special precautions should be used to prevent hazardous situations. Refer to “Safety in Welding and Cutting” (ANSI

Standard Z49.1) and the operating information for the equipment being used.

6.c. When not welding, make certain no part of the electrode circuit is touching the work or ground. Accidental contact can cause overheating and create a fire hazard.

6.d. Do not heat, cut or weld tanks, drums or containers until the proper steps have been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside. They can cause an explosion even though they have been “cleaned”. For information, purchase “Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping That Have Held Hazardous

Substances”, AWS F4.1 from the American Welding Society

(see address above).

6.e. Vent hollow castings or containers before heating, cutting or welding. They may explode.

6.f. Sparks and spatter are thrown from the welding arc. Wear oil free protective garments such as leather gloves, heavy shirt, cuffless trousers, high shoes and a cap over your hair. Wear ear plugs when welding out of position or in confined places.

Always wear safety glasses with side shields when in a welding area.

6.g. Connect the work cable to the work as close to the welding area as practical. Work cables connected to the building framework or other locations away from the welding area increase the possibility of the welding current passing through lifting chains, crane cables or other alternate circuits. This can create fire hazards or overheat lifting chains or cables until they fail.

6.h. Also see item 1.c.

CYLINDER may explode

if damaged.

7.a. Use only compressed gas cylinders

containing the correct shielding gas for the process used and properly operating regulators designed for the gas and

pressure used. All hoses, fittings, etc. should be suitable for the application and maintained in good condition.

7.b. Always keep cylinders in an upright position securely chained to an undercarriage or fixed support.

7.c. Cylinders should be located:

Away from areas where they may be struck or subjected to physical damage.

A safe distance from arc welding or cutting operations and any other source of heat, sparks, or flame.

7.d. Never allow the electrode, electrode holder or any other electrically “hot” parts to touch a cylinder.

7.e. Keep your head and face away from the cylinder valve outlet when opening the cylinder valve.

7.f. Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use.

7.g. Read and follow the instructions on compressed gas cylinders, associated equipment, and CGA publication P-l, “Precautions for Safe Handling of Compressed Gases in

Cylinders,” available from the Compressed Gas Association 1235 Jefferson Davis Highway, Arlington, VA 22202.

FOR ELECTRICALLY powered equipment.

8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment.

8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer’s recommendations.

8.c. Ground the equipment in accordance with the U.S. National Electrical Code and the manufacturer’s recommendations.

Mar ‘95

iv

SAFETY

iv

PRÉCAUTIONS DE SÛRETÉ

Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suivantes:

Sûreté Pour Soudage A L’Arc

1.Protegez-vous contre la secousse électrique:

a.Les circuits à l’électrode et à la piéce sont sous tension quand la machine à souder est en marche. Eviter toujours tout contact entre les parties sous tension et la peau nue ou les vétements mouillés. Porter des gants secs et sans trous pour isoler les mains.

b.Faire trés attention de bien s’isoler de la masse quand on soude dans des endroits humides, ou sur un plancher metallique ou des grilles metalliques, principalement dans les positions assis ou couché pour lesquelles une grande partie du corps peut être en contact avec la

masse.

c.Maintenir le porte-électrode, la pince de masse, le câble de soudage et la machine à souder en bon et sûr état defonctionnement.

d.Ne jamais plonger le porte-électrode dans l’eau pour le refroidir.

e.Ne jamais toucher simultanément les parties sous tension des porte-électrodes connectés à deux machines à souder parce que la tension entre les deux pinces peut être le total de la tension à vide des deux machines.

f.Si on utilise la machine à souder comme une source de courant pour soudage semi-automatique, ces precautions pour le porte-électrode s’applicuent aussi au pistolet de soudage.

2.Dans le cas de travail au dessus du niveau du sol, se protéger contre les chutes dans le cas ou on recoit un choc. Ne jamais enrouler le câble-électrode autour de n’importe quelle partie du corps.

3.Un coup d’arc peut être plus sévère qu’un coup de soliel, donc:

a.Utiliser un bon masque avec un verre filtrant approprié

ainsi qu’un verre blanc afin de se protéger les yeux du rayonnement de l’arc et des projections quand on soude ou quand on regarde l’arc.

b.Porter des vêtements convenables afin de protéger la peau de soudeur et des aides contre le rayonnement de l‘arc.

c.Protéger l’autre personnel travaillant à proximité au

soudage à l’aide d’écrans appropriés et non-inflamma- bles.

4.Des gouttes de laitier en fusion sont émises de l’arc de soudage. Se protéger avec des vêtements de protection libres de l’huile, tels que les gants en cuir, chemise épaisse, pantalons sans revers, et chaussures montantes.

5.Toujours porter des lunettes de sécurité dans la zone de soudage. Utiliser des lunettes avec écrans lateraux dans les zones où l’on pique le laitier.

6.Eloigner les matériaux inflammables ou les recouvrir afin de prévenir tout risque d’incendie dû aux étincelles.

7.Quand on ne soude pas, poser la pince à une endroit isolé de la masse. Un court-circuit accidental peut provoquer un échauffement et un risque d’incendie.

8.S’assurer que la masse est connectée le plus prés possible de la zone de travail qu’il est pratique de le faire. Si on place la masse sur la charpente de la construction ou d’autres endroits éloignés de la zone de travail, on augmente le risque de voir passer le courant de soudage par les chaines de levage, câbles de grue, ou autres circuits. Cela peut provoquer des risques d’incendie ou d’echauffement des chaines et des câbles jusqu’à ce qu’ils se rompent.

9.Assurer une ventilation suffisante dans la zone de soudage. Ceci est particuliérement important pour le soudage de tôles galvanisées plombées, ou cadmiées ou tout autre métal qui produit des fumeés toxiques.

10.Ne pas souder en présence de vapeurs de chlore provenant d’opérations de dégraissage, nettoyage ou pistolage. La chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs du solvant pour produire du phosgéne (gas fortement toxique) ou autres produits irritants.

11.Pour obtenir de plus amples renseignements sur la sûreté, voir le code “Code for safety in welding and cutting” CSA

Standard W 117.2-1974.

PRÉCAUTIONS DE SÛRETÉ POUR LES MACHINES À SOUDER À TRANSFORMATEUR ET À REDRESSEUR

1.Relier à la terre le chassis du poste conformement au code de l’électricité et aux recommendations du fabricant. Le dispositif de montage ou la piece à souder doit être branché à une bonne mise à la terre.

2.Autant que possible, I’installation et l’entretien du poste seront effectués par un électricien qualifié.

3.Avant de faires des travaux à l’interieur de poste, la debrancher à l’interrupteur à la boite de fusibles.

4.Garder tous les couvercles et dispositifs de sûreté à leur

Mar. ‘93

v

Thank You

v

for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product

••• as much pride as we have in bringing this product to you!

Please Examine Carton and Equipment For Damage Immediately

When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims for material damaged in shipment must be made by the purchaser against the transportation company at the time the shipment is received.

Please record your equipment identification information below for future reference. This information can be found on your machine nameplate.

Model Name & Number _____________________________________

Code & Serial Number _____________________________________

Date of Purchase _____________________________________

Whenever you request replacement parts for or information on this equipment always supply the information you have recorded above.

Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection. The level of seriousness to be applied to each is explained below:

WARNING

This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.

CAUTION

This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.

 

TABLE OF CONTENTS

 

vi

 

 

Page

 

Installation .......................................................................................................

Section A

 

Technical Specifications ........................................................................................

A-1

 

Select Suitable Location ........................................................................................

A-2

 

Input Connections..................................................................................................

A-2

 

Field Installed Options ...........................................................................................

A-3

 

Required Equipment - Control Cable Connections................................................

A-3

 

Output Connections...............................................................................................

A-3

 

Paralleling .............................................................................................................

A-4

 

Connection of Auxiliary Equipment to Wire Feeder Receptacle............................

A-4

 

 

 

 

 

Operation .........................................................................................................

Section B

 

Safety Precautions ................................................................................................

B-1

 

General Description ...............................................................................................

B-2

 

Recommended Processes and Equipment ...........................................................

B-2

 

Operational Features and Controls........................................................................

B-2

 

Design Features ....................................................................................................

B-2

 

Limitations..............................................................................................................

B-2

 

Power Source Operation .......................................................................................

B-2

 

Duty Cycle .............................................................................................................

B-2

 

Controls and Settings ............................................................................................

B-3

 

Graphic Symbols ...................................................................................................

B-4

 

Output Panel Connections.....................................................................................

B-5

 

Starting the Machine..............................................................................................

B-6

 

Adjusting the Output Voltage using the Digital Meter ............................................

B-6

 

Local/Remote Switch Operation ............................................................................

B-6

 

Auxiliary Power ......................................................................................................

B-6

 

Overload Protection...............................................................................................

B-6

 

 

 

 

 

Accessories .....................................................................................................

Section C

 

Factory/Field Installed Options ..............................................................................

C-1

 

Compatible Lincoln Equipment..............................................................................

C-1

 

 

 

 

 

Maintenance ....................................................................................................

Section D

 

Safety Precautions ................................................................................................

D-1

 

General Maintenance ............................................................................................

D-1

 

Machine and Circuit Protection..............................................................................

D-1

 

 

 

 

 

Troubleshooting ..............................................................................................

Section E

 

Safety Precautions.................................................................................................

E-1

 

How to Use Troubleshooting Guide.......................................................................

E-1

 

Built-in Diagnostic Routines and Error Codes -Troubleshooting Guide.................

E-2

 

Machine -Troubleshooting Guide...........................................................................

E-3

 

Options -Troubleshooting Guide............................................................................

E-6

 

Procedure for Replacing PC Boards......................................................................

E-7

 

Control and Meter PC Board Troubleshooting Procedures ...................................

E-7

 

Output Voltage, Fault Protection, Snubber Circuit and K857 Remote Control Checks....................

E-8

 

 

 

 

 

Diagrams ..........................................................................................................

Section F

 

 

 

 

 

Parts Manual ....................................................................................................

Appendix

 

 

 

 

 

A-1

 

 

 

 

INSTALLATION

 

 

 

 

A-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TECHNICAL SPECIFICATIONS – IDEALARC CV-300

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT - THREE PHASE ONLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

 

 

 

 

Standard

 

 

 

Input Current at

 

 

 

 

 

 

 

 

 

Voltage

 

 

 

Rated Output

 

 

 

 

Number

 

 

 

208/230/460/3/60

 

 

 

100% Duty Cycle 66/60/30

 

 

 

 

10180

 

 

 

 

 

 

 

 

 

60% Duty Cycle 67/61/31

 

 

 

 

 

 

 

 

230/460/575/3/60

 

 

 

100% Duty Cycle 60/30/24

 

 

 

 

10181

 

 

 

 

 

 

 

 

 

60% Duty Cycle 61/31/25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATED OUTPUT

 

 

 

 

 

 

 

 

 

 

Duty Cycle

 

 

 

Amps

 

 

 

 

Volts at Rated Amperes

 

 

 

 

 

100% Duty Cycle

 

 

 

300

 

 

 

 

32

 

 

 

 

 

NEMA Class I (100)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60% Duty Cycle

 

 

 

400

 

 

 

 

36

 

 

 

 

 

100% Duty Cycle

 

 

 

300

 

 

 

 

32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT

 

 

 

 

 

 

 

 

 

Welding Current/Voltage Range

 

 

 

Normal Open Circuit Voltage

 

 

 

Auxiliary Power

 

 

 

 

 

(Continuous)

 

 

 

10-43

 

 

 

 

42 Volts AC, 10 Amps

 

 

 

 

 

50A/7V - 400A/37V

 

 

 

MAX OCV: 50

 

 

 

 

115 Volts AC, 5 Amps

 

 

 

 

 

DC

 

 

 

 

 

 

 

 

( Both Circuit Breaker Protected)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MISC. INFORMATION

 

 

 

 

 

 

 

 

 

 

Efficiency at 100% Load

 

 

 

Input kVA

 

 

 

 

Idle Current - Amps

 

 

 

78%

 

 

 

60% Load - 24.1

 

 

 

 

11/10/5

 

 

 

 

 

 

 

 

 

100% Load - 23.8

 

 

 

 

 

 

 

 

 

 

Idle Power

 

 

 

Power Factor at 100% Load

 

 

 

 

 

 

 

 

 

 

800W

 

 

 

.61

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PHYSICAL DIMENSIONS

 

 

 

 

 

 

 

 

 

 

Height

Width

Depth

Weight

 

 

 

 

21.5 in.

19.5 in.

27.0 in.

 

 

 

 

 

 

 

(Lift bail, add 3.12 in)

 

 

 

 

300 lbs

 

 

 

 

 

 

 

 

 

 

 

 

 

(137 kg)

 

 

 

 

546 mm

495 mm

686 mm

 

 

 

 

 

(Lift bail, add 80 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CV-300

A-2

 

INSTALLATION

A-2

 

 

 

 

 

 

Read entire installation section before starting INPUT CONNECTIONS

 

installation.

 

 

 

SAFETY PRECAUTIONS

 

Be sure the voltage, phase, and frequency of the input

 

power is as specified on the welder nameplate.

 

 

 

 

 

 

 

 

 

WARNING

 

Gain access to the input reconnect panel by removing

 

 

 

 

the right case side of the CV-300 (side nearest to the

ELECTRIC SHOCK can kill.

Only qualified personnel should Power switch.) perform this installation.

Turn the input power OFF at the discon- Have a qualified electrician connect the input leads to

nect switch or fuse box before working on this equipment.

Turn the Power switch on the CV-300 “OFF” before connecting or disconnecting output cables, wire feeder or remote connections, or other equipment.

L1, L2, and L3 of the input reconnect panel in accordance with the National Electrical Code, all local codes, and the connection diagram located on the inside of the right case side. Use a three phase line.

Do not touch electrically hot parts.

Always connect the Idealarc CV-300 grounding terminal (located on the welder base near the reconnect panel) to a good electrical earth ground.

SELECT SUITABLE LOCATION

Place the welder where clean cooling air can freely circulate in through the side louvers and out through the rear louvers. Dirt, dust or any foreign material that can be drawn into the welder should be kept at a minimum. Failure to observe these precautions can result in excessive operating temperatures and nuisance shut-downs. Idealarc CV-300 power sources carry an IP23 enclosure rating. They are rated for use in damp, dirty environments subject to occasional falling water such as rain.

STACKING

The CV-300 may be stacked three-high provided the bottom machine is on a stable, hard, level surface. Be sure that the two pins in the roof fit into the slots in the base of the CV-300 above it.

TILTING

Do not place the machine on a surface that is inclined enough to create a risk of the machine falling over.

The frame of the welder must be grounded. A ground terminal marked with the symbol located on the base of the machine is provided for this purpose. See the National Electrical Code for details on proper grounding methods.

Fuse the input circuit with the recommended super lag fuses. Choose an input and grounding wire size according to local codes or use the following table. "Delay type"1 circuit breakers may be used in place of fuses. Using fuses or circuit breakers smaller than recommended may result in "nuisance" tripping from welder inrush currents even if not welding at high currents.

RECOMMENDED INPUT WIRE AND FUSE SIZES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type 75°C

 

 

 

 

Fuse

Input

Type 75°C

Copper

 

 

 

Input

(Super Lag)

Ampere

Copper Wire in

Ground Wire in

 

 

 

Voltage /

or Breaker

Rating on

Conduit AWG

Conduit AWG

 

 

 

Frequency

Size

Nameplate

(IEC) Sizes

(IEC) Sizes

 

 

 

 

 

 

 

 

 

 

 

208/60

100

66

4 (25 mm2)

8 (10mm2)

 

 

 

230/60

90

60

4 (25 mm2)

8 (10mm2)

 

 

 

460/60

50

30

10 (6mm2)

10 (6mm2)

 

 

 

575/60

40

24

10 (6mm2)

10 (6mm2)

 

 

 

200/50/60

100

66

4 (25 mm2)

8 (10mm2)

 

 

 

220/50/60

90

61

4 (25 mm2)

8 (10mm2)

 

 

 

230/50/60

90

58

4 (25 mm2)

8 (10mm2)

 

 

 

380/50/60

60

35

8 (10mm2)

10 (6mm2)

 

 

 

400/50/60

50

33

8 (10mm2)

10 (6mm2)

 

 

 

415/50/60

50

32

8 (10mm2)

10 (6mm2)

 

 

 

440/50/60

50

31

10 (6mm2)

10 (6mm2)

 

 

 

500/50/60

40

26

10 (6mm2)

10 (6mm2)

 

1Also called “inverse time” or “thermal/magnetic” circuit breakers; circuit breakers which have a delay in tripping action that decreases as the magnitude of the current increases.

CV-300

A-3

INSTALLATION

A-3

 

 

 

FIELD INSTALLED OPTIONS

For installation of compatible field installed options (see the ACCESSORIES section of this manual and refer to the instructions included with those options.

REQUIRED EQUIPMENT-CONTROL CABLE CONNECTIONS

Follow the instructions below which are appropriate for the wire feeder that will be used.

LN-7 to CV-300

a)Turn the CV-300 Power switch to the "OFF" position.

b)Connect the LN-7 control cable to the wire feeder receptacle on the CV-300.

c)See OUTPUT CONNECTIONS for connection of work and electrode cables.

LN-25 to CV-300

a)Turn the CV-300 Power switch to the "OFF" position.

b)Plug a K484 jumper plug into the CV-300 wire feeder receptacle.

c)See OUTPUT CONNECTIONS for connection of work and electrode cables.

WARNING

The output terminals are energized at all times when the K484 is plugged in.

------------------------------------------------------------------------

LN-742 to CV-300

a)Turn the CV-300 Power switch to the "OFF" position.

b)Connect the LN-742 control cable to the wire feeder receptacle on the CV-300.

c)See OUTPUT CONNECTIONS for connection of work and electrode cables.

Connection of Remote Control (K857)

NOTE: The K864 Remote Control Adapter is required to install the K857.

Plug the K864 Remote Control Adapter into the power source's 14-pin receptacle. Plug the K857 Remote Control into the 6-pin receptacle of the K864 adapter. If possible, tape the Remote cable to the heavy output leads, so they can protect the smaller Remote cable from damage and abuse.

OUTPUT CONNECTIONS

Output cables must have Magnum Twist-Mate™ plugs for connection to the CV-300. Order K852-95 for connecting 2/0-3/0 (70-95 mm2) cables. Refer to S18737 for instructions on installing these plugs.

Use the shortest possible cable lengths. See Table A.1 for recommended cable sizes based on length.

Connect the positive output lead to the terminal marked "+". The negative output lead can be hooked to either the low inductance terminal (marked " ") or the high inductance terminal (marked " ").

TABLE A.1

Cable Sizes for Combined Lengths of Copper Electrode and Work Cable

 

Lengths up to

 

 

Machine Size

150 ft

150 to 200 ft

 

 

 

 

 

 

 

 

 

300 A 100%

2/0 (70mm2)

3/0 (95mm2)

 

(400 A 60%)

 

 

 

 

 

 

 

 

 

 

 

 

CV-300

A-4

INSTALLATION

A-4

 

 

 

PARALLELING

The CV-300 is not designed to be paralleled with any other power source.

CONNECTION OF AUXILIARY EQUIPMENT

TO THE WIRE FEEDER RECEPTACLE

Occasionally, it may be necessary to make connection to the circuits present in the 14-pin wire feeder receptacle. These circuits, such as the auxiliary voltage, contactor, and remote control circuits, may be accessed with a K867 Universal Adapter. This adapter plugs into the receptacle and provides the user with short wire leads for connections. Refer to the instructions provided with the K867, as well as the wiring diagram for the CV-300 power source, for details on making those connections. For your convenience, wire feeder connection details are shown in the DIAGRAM section.

NOTE: If you intend to use a standard Lincoln wire feeder, order the appropriate input cable for the specific feeder. It will make all of the control and power connections between the CV300 and the wire feeder WITHOUT the need for a K867 Universal Adapter.

CV-300

B-1

OPERATION

B-1

 

 

 

OPERATING INSTRUCTIONS

Read and understand this entire section before operating the machine.

GENERAL WARNINGS

SAFETY PRECAUTIONS

WARNING

ELECTRIC SHOCK can kill.

Do not touch electrically live parts or electrode with skin or wet clothing.

Insulate yourself from work and ground.

Always wear dry insulating gloves.

FUMES AND GASES can be dangerous.

• Keep your head out of fumes.

Use ventilation or exhaust to remove fumes from breathing zone.

WELDING SPARKS can cause fire or explosion

Keep flammable material away.

Do not weld on containers that have held combustibles.

ARC RAYS can burn.

Wear eye, ear and body protection.

Observe additional Safety Guidelines detailed throughout this manual.

CV-300

B-2

OPERATION

B-2

 

 

 

CAUTION

When using a CV-300 power source with wire feeders, there will be a small spark if the electrode contacts the work or ground within several seconds after releasing the trigger.

When used with some wire feeders with the electrical trigger interlock in the ON position, the arc might restart if the electrode touches the work or ground during these several seconds.

------------------------------------------------------------------------

GENERAL DESCRIPTION

The CV-300 is a constant voltage DC power source designed for the GMAW process with limited FCAW capability as well. It features an industrial rating of 300 amps, 32 volts, at 100% duty cycle. It complies with the requirements for a NEMA Class I (100) power source.

It is available from the factory in one model only, with no options other than input voltage or frequency.

RECOMMENDED PROCESSES AND EQUIPMENT

The CV-300 is capable of solid wire welding within the rated output capacity of the machine. It is also capable of welding with the following flux-cored wires: NR152, NR-211, NS-3M, NR-203 Ni 1%, and Outershield® 70 and 71.

The CV-300 is recommended for use with the LN-7, LN-742 and LN-25 wire feeder models.

OPERATIONAL FEATURES AND CONTROLS

Two inductance positions: operator can choose the optimum output characteristics.

Solid State Output Contactor: no noise, no moving parts to wear.

Digital Voltmeter/Ammeter is standard.

Power on/off switch.

42 VAC, 10 amp auxiliary power available for the wire feeder.

Circuit breaker protected.

115 VAC, 5 amp auxiliary power available for the wire feeder; circuit breaker protected.

Magnum Twist-Mate™ output receptacles.

Single MS-type (14-pin) connection for wire feeder.

Solid state controls, with line voltage compensation.

Optional remote control capability.

DESIGN FEATURES

"Clean" appearance and simple controls -- easy to operate.

Electronic and thermostatic protection from overloads.

Submersion dipping of assembled transformer, choke, and rectifier in special sealing/insulating material gives extra protection against moisture and corrosive atmospheres.

Microprocessor based Control PC Board has built-in diagnostic routines.

Compact size, requires only 19" x 26" footprint.

Modular construction for easy servicing.

Recessed panels protect output studs and controls. Large safety margins and protective circuits protect rectifiers from transient voltages and high currents.

LIMITATIONS

The CV-300 is intended only for use with the following FCAW electrodes: NR-152, NR-211, NR-203 Ni 1%, NS-3M, Outershield 70 and 71. The machine has been designed primarily for the GMAW process.

POWER SOURCE OPERATION

Be sure the CV-300 is properly installed, and that all accessories are properly hooked up before attempting operation.

DUTY CYCLE

300 Amps, 32 Volts at 100%

400 Amps, 36 Volts at 60%

Duty Cycle is based on operation for a 10 minute period.

CV-300

B-3

OPERATION

B-3

 

 

 

CONTROLS AND SETTINGS

All operator controls and adjustments are located on the case front of the CV-300. Refer to Figures B.1, and B.2 and corresponding explanations.

FIGURE B.1 - CONTROL PANEL

D

E C

 

 

 

 

 

H

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

G

B

 

J

A. POWER SWITCH

 

 

 

F.

42 VOLT CIRCUIT BREAKER

 

B. VOLTAGE ADJUSTMENT

 

G.

115 VOLT CIRCUIT BREAKER

 

C. THERMAL PROTECTION INDICATION LIGHT

H.

LOCAL / REMOTE SWITCH

 

D. VOLTS / AMPS SWITCH

 

 

 

J.

WIRE FEEDER VOLTMETER SWITCH

E. DIGITAL VOLTMETER / AMMETER

 

 

 

 

 

 

 

A.POWER SWITCH

-A two-position toggle switch.Controls the input power to the CV-300.

B.VOLTAGE ADJUST

-Controls the CV-300 output voltage.

C.THERMAL PROTECTION INDICATION LIGHT

-Indicates that the protection thermostat has activated. The digital meter will display "E10" when this occurs. When the light turns off, the machine will be capable of supplying welding output power again.

NOTE: Leaving the power switch in the "ON" position will result in the most rapid cooling.

D.VOLTS/AMPS SWITCH

-Selects either output current or arc voltage to be displayed on the digital meter.

E.DIGITAL VOLTMETER/AMMETER

-Displays the CV-300 output current, or the arc voltage.

NOTE: Due to voltage drops in the welding cables and at cable connection points, the actual arc voltage may be lower than that displayed on the voltmeter. Use welding cables of the proper capacity and make sure all connections are tight to minimize this effect.

F. 42 VOLT CIRCUIT BREAKER

-Protects the 42 volt 41-42 circuit in the wire feeder receptacle from overloads and shorts. If this circuit breaker opens, the CV-300 will work normally. However, any equipment powered by the 42 volt circuit will not work.

G. 115 VOLT CIRCUIT BREAKER

-Protects the 115 volt 31-32 circuit in the wire feeder receptacle from overloads and shorts. If this circuit breaker opens, the CV-300 will work normally. However, any equipment powered by the 115 volt circuit will not work.

H. LOCAL/REMOTE SWITCH

-Determines whether the welding voltage is controlled at the CV-300, or controlled remotely by a remote output control (such as a K857).

CV-300

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