Lincoln Electric Welding Consumables IM10018 A User Manual

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IM10018-A  
December, 2010  
IDEALARC® DC-600 VRD  
For use with machines having Code Numbers:  
11598, 11613, 11707, 11725  
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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 READ-  
ING THIS MANUAL AND THE  
SAFETY PRECAUTIONS CON-  
TAINED THROUGHOUT. And,  
most importantly, think before  
you act and be careful.  
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IEC 60974-1  
IP23  
Equipped with VRD (VOLTAGE REDUCTION DEVICE)  
See Operation Section for an explanation.  
OPERATOR’SꢀMANUAL  
Copyright © 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 WEBꢀSITE: www.lincolnelectric.com  
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SAFETY  
ARC RAYS can burn.  
ELECTRIC SHOCK can  
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.  
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.  
4.b. Use suitable clothing made from durable flame-resistant  
material to protect your skin and that of your helpers from  
the arc rays.  
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.  
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.  
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:  
FUMES AND GASES  
can be dangerous.  
5.a. Welding may produce fumes and gases  
hazardous to health. Avoid breathing these  
• Semiautomatic DC Constant Voltage (Wire) Welder.  
• DC Manual (Stick) Welder.  
fumes and gases. When welding, keep  
your head out of the fume. Use enough  
ventilation and/or exhaust at the arc to keep  
• AC Welder with Reduced Voltage Control.  
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 within applicable OSHA PEL and  
ACGIH TLV limits using local exhaust or mechanical  
ventilation. In confined spaces or in some circum-  
stances, outdoors, a respirator may be required.  
Additional precautions are also required when welding  
on galvanized steel.  
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.  
5. b. The operation of welding fume control equipment is affected  
by various factors including proper use and positioning of  
the equipment, maintenance of the equipment and the spe-  
cific welding procedure and application involved. Worker  
exposure level should be checked upon installation and  
periodically thereafter to be certain it is within applicable  
OSHA PEL and ACGIH TLV limits.  
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.  
5.c. 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 prod-  
ucts.  
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.  
5.d. 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.e. 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.f. Also see item 1.b.  
IDEALARC® DC-600 VRD  
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SAFETY  
WELDING and CUTTING  
CYLINDER may explode  
if damaged.  
SPARKS can  
cause fire or explosion.  
7.a. Use only compressed gas cylinders  
containing the correct shielding gas for the  
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.  
process used and properly operating  
regulators designed for the gas and  
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.  
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.  
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.  
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.  
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.  
7.d. Never allow the electrode, electrode holder or any other  
electrically “hot” parts to touch a cylinder.  
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).  
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.  
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.  
FOR ELECTRICALLY  
powered equipment.  
8.a. Turn off input power using the disconnect  
switch at the fuse box before working on  
the equipment.  
6.g. Connect the work cable to the work as close to the welding  
area as practical. Work cables connected to the building  
framework or other locations away from the welding area  
increase the possibility of the welding current passing  
through lifting chains, crane cables or other alternate cir-  
cuits. This can create fire hazards or overheat lifting chains  
or cables until they fail.  
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.  
6.h. Also see item 1.c.  
6.I. Read and follow NFPA 51B “ Standard for Fire Prevention  
During Welding, Cutting and Other Hot Work”, available  
from NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma  
022690-9101.  
6.j. Do not use a welding power source for pipe thawing.  
Refer to http://www.lincolnelectric.com/safety for additional safety information.  
IDEALARC® DC-600 VRD  
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SAFETY  
5. Toujours porter des lunettes de sécurité dans la zone de  
PRÉCAUTIONS DE SÛRETÉ  
soudage. Utiliser des lunettes avec écrans lateraux dans les  
zones où l’on pique le laitier.  
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 suiv-  
antes:  
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.  
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.  
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 lev-  
age, 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.  
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.  
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.  
d.Ne jamais plonger le porte-électrode dans l’eau pour le  
refroidir.  
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.  
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.  
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.  
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.  
PRÉCAUTIONS DE SÛRETÉ POUR  
LES MACHINES À SOUDER À  
TRANSFORMATEUR ET À  
REDRESSEUR  
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 ray-  
onnement de l’arc et des projections quand on soude ou  
quand on regarde l’arc.  
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.  
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-inflammables.  
2. Autant que possible, I’installation et l’entretien du poste seront  
effectués par un électricien qualifié.  
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, pan-  
talons sans revers, et chaussures montantes.  
3. Avant de faires des travaux à l’interieur de poste, la debranch-  
er à l’interrupteur à la boite de fusibles.  
4. Garder tous les couvercles et dispositifs de sûreté à leur  
place.  
IDEALARC® DC-600 VRD  
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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!  
Thank You  
CUSTOMER ASSISTANCE POLICY  
The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equip-  
ment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln  
Electric for advice or information about their use of our products. We respond to our customers based on the best information in our posses-  
sion at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such infor-  
mation or advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customer’s particular purpose,  
with respect to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or  
correcting any such information or advice once it has been given, nor does the provision of information or advice create, expand or alter any  
warranty with respect to the sale of our products.  
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control  
of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in  
applying these types of fabrication methods and service requirements.  
for any updated information.  
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.  
Product _________________________________________________________________________________  
Model Number ___________________________________________________________________________  
Code Number or Date Code_________________________________________________________________  
Serial Number____________________________________________________________________________  
Date Purchased___________________________________________________________________________  
Where Purchased_________________________________________________________________________  
Whenever you request replacement parts or information on this equipment, always supply the information you  
have recorded above. The code number is especially important when identifying the correct replacement parts.  
On-Line Product Registration  
- Register your machine with Lincoln Electric either via fax or over the Internet.  
• For faxing: Complete the form on the back of the warranty statement included in the literature packet  
accompanying this machine and fax the form per the instructions printed on it.  
• For On-Line Registration: Go to our WEbꢀSITE at www.lincolnelectric.com. Choose “Quick Links” and then  
“Product Registration”. Please complete the form and submit your registration.  
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.  
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TAbLE OF CONTENTS  
Page  
Installation .......................................................................................................Section A  
Technical Specifications ............................................................................................. A-1  
Safety Precautions ..................................................................................................... A-2  
Select Proper Location.................................................................................................A-2  
Limit on Stacking ...................................................................................................A-2  
Stacking.................................................................................................................A-2  
Tilting .....................................................................................................................A-2  
Electrical Input Connections ....................................................................................... A-3  
Fuses and Wire Sizes............................................................................................A-3  
Ground Connection .............................................................................................. A-3  
Input Power Supply Connections...........................................................................A-3  
Reconnect Procedure ................................................................................................ A-4  
Output Connections ................................................................................................... A-5  
Electrode, Work and #21 Lead ..............................................................................A-5  
Auxiliary Power and Control Connections .............................................................A-6  
________________________________________________________________________  
Operation .........................................................................................................Section b  
Safety Precautions ............................................................................................... B-1  
General Description ............................................................................................. B-2  
Recommended Processes and Equipment ...........................................................B-2  
Design Features and Advantages ........................................................................B-2  
Welding Capability ............................................................................................... B-3  
Meaning of Graphical Symbols on Case Front......................................................B-3  
Meaning of Graphical Symbols on Rating Plate ....................................................B-4  
Meaning of Graphical Symbol for Ground Connection ..........................................B-4  
Controls and Settings ....................................................................................B-4, B-5  
Auxiliary Power in MS - Receptacle.......................................................................B-5  
Overload, Overcurrent and Fault Protection..........................................................B-6  
VRD Voltage Reduction Device Operation............................................................B-6  
Operating Steps ................................................................................................... B-7  
Remote Control of Machine Operation ..................................................................B-7  
Welding Procedure Recommendations ............................................................... B-7  
Semi-Automatic and Automatic Wire Feeding  
with a IDEALARC® DC-600 VRD and Wire Feeders............................................B-7  
NA-3 Automatic Wire Feeder ..........................................................................B-8  
NA-5 Automatic Wire Feeder ..........................................................................B-9  
________________________________________________________________________  
Accessories.....................................................................................................Section C  
Wire Feeders and Tractors....................................................................................C-1  
Field Installed Options...........................................................................................C-1  
Remote Output Control (K775 or K857)..........................................................C-1  
Remote Control Adapter Cable (K864)...........................................................C-1  
Undercarriages (K817P, K842).......................................................................C-1  
Paralleling Kit (K1611-1).................................................................................C-1  
TIG Module (K930-2) ......................................................................................C-1  
Factory or Field Installed Options..........................................................................C-1  
Multi-Process Switch (K804-1)........................................................................C-1  
Connections for Semi-Automatic or Automatic Wire Feeder Control ....................C-3  
________________________________________________________________________  
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TAbLE OF CONTENTS  
Page  
Maintenance ....................................................................................................Section D  
Safety Precautions ................................................................................................D-1  
Routine and Periodic Maintenance........................................................................D-1  
Troubleshooting..............................................................................................Section E  
Safety Precautions.................................................................................................E-1  
How to Use Troubleshooting Guide.......................................................................E-1  
Troubleshooting Guide ..........................................................................................E-2  
Wiring Diagrams, Connection Diagrams and Dimension Prints.................Section F  
Parts List....................................................................................................P-631 Series  
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A-1  
INSTALLATION  
TECHNICAL SPECIFICATIONS – IDEALARC® DC-600 VRD  
A-1  
INPUT - THREE PHASE ONLY  
Input Current at Rated Output  
Standard  
Voltage  
CODES  
50% Duty Cycle  
100% Duty Cycle  
60% Duty Cycle  
230/460/575/60  
415/50/60  
11613, 11707  
11598, 11725  
134/67/54  
73  
108/54/43  
62  
122/61/49  
68  
RATED OUTPUT  
Amps  
Duty Cycle  
Volts at Rated Amperes  
100% Duty Cycle  
60% Duty Cycle  
50% Duty Cycle  
600  
680  
750  
44  
44  
44  
OUTPUT  
Output Range  
70A/13V-780A/44V (CV)  
90A/24V-780A/44V (CC)  
Maximum Open Circuit Voltage  
5V for 60 HZ models  
5V for 50/60 HZ models  
Auxiliary Power  
See the OPERATION section  
for Auxiliary Power  
information by model  
RECOMMENDED INPUT WIRE AND FUSE SIzES  
HERTz  
TYPE 75°C TYPE 75°C  
COPPER WIRE GROUND WIRE  
TYPE 75°C  
(SUPER LAG)  
OR bREAKER  
SIzE (AMPS)1  
INPUT  
VOLTAGE /  
FREQUENCY  
INPUT AMPERE  
RATING ON  
NAMEPLATE  
IN CONDUIT  
IN CONDUIT  
AWG(IEC-MM2) SIzES AWG(IEC-MM2) SIzES  
30°C (86°F) Ambient  
230  
460  
575  
415  
60  
60  
60  
50/60  
108  
54  
43  
61  
2 (34)  
6 (14)  
8 (8.4)  
6 (14)  
6 (14)  
8 (8.4)  
8 (8.4)  
8 (8.4)  
175 Amp  
90 Amp  
70 Amp  
100 Amp  
PHYSICAL DIMENSIONS  
HEIGHT  
30.75 in  
781 mm  
WIDTH  
22.25 in  
567 mm  
DEPTH  
39.0 in  
988 mm  
WEIGHT  
525 lbs.  
238 kg.  
1
Also 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.  
IDEALARC® DC-600 VRD  
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A-2  
A-2  
INSTALLATION  
STACKING  
SAFETY PRECAUTIONS  
Read entire Installation Section before  
installing the IDEALARC® DC-600 VRD.  
Three IDEALARC® DC-600 VRD machines can be  
stacked.  
ELECTRIC SHOCK CAN KILL.  
WARNING  
DO NOT stack more than three machines in one  
grouping.  
DO NOT stack the IDEALARC® DC-600 VRD on  
another type of machine.  
• Only qualified personnel should  
install this machine.  
Follow these guidelines when stacking:  
1. Select a firm, level surface capable of supporting  
the total weight of up to three machines (1570  
pounds/712 kilograms).  
• Turn the input power OFF at the  
disconnect switch or fuse box  
before working on the equipment.  
2. Set the bottom machine in place.  
• Do not touch electrically hot parts.  
3. Stack the second machine on top of it by aligning  
the two holes in the base rails of the second  
machine with the two pins on top front of the bot-  
tom machine.  
• Always connect the IDEALARC® DC-600 VRD  
grounding terminal to a good electrical earth  
ground.  
• Set the IDEALARC® DC-600 VRD Power ON/OFF  
PUSH bUTTON to the OFF position when con-  
necting power cord to input power.  
4. Repeat process for third machine.  
NOTE: The machines must be stacked with the Case  
Front of each machine flush with each other. See  
Figure A.1.  
__________________  
SELECT PROPER LOCATION  
FIGURE A.1 - Stacking IDEALARC® DC-600  
VRD machines  
Place the welder where clean cooling air can freely  
circulate in through the front 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 mini-  
mum. Failure to observe these precautions can result  
in excessive operating temperatures and nuisance  
shut-downs.  
STACKING HOLE  
LIMIT ON STACKING  
WARNING  
• Lift only with equipment of ade-  
quate lifting capacity.  
• be sure machine is stable when  
lifting.  
STACKING PINS  
• Do not lift this machine using lift  
bail if it is equipped with a heavy  
accessory such as trailer or gas  
cylinder.  
TILTING  
FALLING  
EQUIPMENT can  
cause injury.  
• Do not lift machine if lift bail is  
damaged.  
• Do not operate machine while  
suspended from lift bail.  
The IDEALARC® DC-600 VRD must be placed on a  
stable, level surface so it will not topple over.  
• Do not stack more than three high.  
• Do not stack the IDEALARC® DC-600 VRD on top of  
any other machine.  
------------------------------------------------------------------------  
IDEALARC® DC-600 VRD  
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A-3  
A-3  
INPUT POWER SUPPLY CONNECTIONS  
INSTALLATION  
ELECTRICAL INPUT CONNECTIONS  
A qualified electrician should connect the input power  
supply leads.  
Before installing the machine check that the input sup-  
ply voltage, phase, and frequency are the same as the  
voltage, phase, and frequency as specified on the  
welder Rating Plate located on the Case Back  
Assembly. Input power supply entry is through the  
hole in the Case Back Assembly. See Figure A.2 for  
the location of the machine’s input cable entry open-  
ing, Input Contactor (CR1), and reconnect panel  
assembly for dual voltage machines.  
1. Follow all national and local electrical codes.  
2. Use a three-phase line.  
3. Remove Input Access Door at upper rear of  
machine.  
4. Follow Input Supply Connection Diagram located  
on the inside of the door.  
INPUT SUPPLY  
CABLE ENTRY  
INPUT  
CONTACTOR (CR1)  
OPENING  
5. Connect the three-phase AC power supply leads  
L1, L2, and L3 to the input contactor  
terminals in the Input Box Assembly by passing  
them thru the three aligned .50” diameter holes in  
the baffle and tighten them in the terminal connec-  
tors. Be sure to close the baffle by inserting the  
tab into the slot in the baffle. See Figure A.3.  
RECONNECT  
PANEL ASSEMBLY  
FIGURE A.2 - Rear Panel  
FUSE AND WIRE SIzES  
Protect the input circuit with the super lag fuses or  
delay type circuit breakers listed on the Technical  
Specifications page of this manual for the machine  
being used. They are also called inverse time or ther-  
mal/magnetic circuit breakers.  
INPUT  
CONTACTOR (CR1)  
DO NOT use fuses or circuit breakers with a lower  
amp rating than recommended. This can result in “nui-  
sance” tripping caused by inrush current even when  
machine is not being used for welding at high output  
currents.  
INPUT POWER SUPPLY  
CABLE WITH BUSHING  
OR BOX CONNECTOR  
PANEL ASSEMBLY  
RECONNECT  
Use input and grounding wire sizes that meet local  
electrical codes or see the Technical Specifications  
page in this manual.  
GROUND CONNECTION  
Ground the frame of the machine. A ground  
terminal marked with the symbol ( ) is located inside  
the Case Back of the machine near the input contac-  
tor. Access to the Input Box Assembly is at the upper  
rear of the machine. See your local and national elec-  
trical codes for proper grounding methods.  
FIGURE A.3 - Input Power Supply  
Connections  
IDEALARC® DC-600 VRD  
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A-4  
A-4  
INSTALLATION  
To reconnect a multiple voltage machine to a different  
voltage, remove input power and change the position  
of the reconnect board on the Reconnect Panel.  
Follow The Input Connection Diagram located on the  
inside of Case Back Input Access Door. These con-  
nection diagrams for the following codes are listed  
below.  
RECONNECT PROCEDURE  
Multiple voltage machines are shipped connected to  
the highest input voltage listed on the machine’s rating  
plate. Before installing the machine, check that the  
Reconnect Panel in the Input Box Assembly is con-  
nected for the proper voltage.  
1. For 415 Single Voltage, see Figure A.4. (S17894)  
2. For 230/460/575, see Figure A.5. (M15666)  
CAUTION  
Failure to follow these instructions can cause  
immediate failure of components within the  
machine.  
When powering welder from a generator be sure  
to turn off welder first, before generator is shut  
down, in order to prevent damage to the welder  
------------------------------------------------------------------------  
G
D
IN  
ES  
L
C
   C
L
         S
L
   N
         O
I
N
C
   A
     H
         N
L3  
W
CRI  
2.  
3.  
E
  R
  T
   D
I
T
  N
  E
A
     A
     F
     B
S
E
M
C
I
E
R
TI  
P
A
E
FOR  
RE  
Q
I
E
IN  
S
 L
V
 T
EG  
SEE MACHINE RATING PLATE FOR REQUIRED INPUT SUPPLY VOLTAGE  
1. TURN OFF THE INPUT POWER USING THE DISCONNECT SWITCH AT THE FUSE BOX  
CRI  
W
V
L3  
L2  
L1  
2. CONNECT TERMINAL MARKED  
TO GROUND PER NATIONAL ELECTRIC CODES.  
LINES  
INPUT  
3. CONNECT THE L1, L2, & L3 INPUT SUPPLY LINES TO INPUT SIDE OF THE CRI CONTACTOR AS SHOWN.  
CONTACTOR  
U
GND  
FIGURE A.4-Reconnect Panel board Positions for Single Voltage Machines  
FIGURE A.5-Reconnect Panel board Positions for 230/460/575 VACꢀMachines  
IDEALARC® DC-600 VRD  
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A-5  
A-5  
INSTALLATION  
OUTPUT CONNECTIONS  
See Table A.1 for recommended IDEALARC® DC-600 VRD cable sizes for combined lengths of electrode and  
work cables.  
TAbLE A.1  
IDEALARC® DC-600 VRD Cable Sizes for Combined Lengths of Copper Electrode and Work  
Cable at 100% Duty Cycle  
Cable Length  
Parallel Cables  
Cable Size  
1/0 (53mm2)  
2/0 (67mm2)  
3/0 (85mm2)  
Lengths up to 150 ft. (46m)  
150 ft.(46m) to 200 ft (61m)  
200 ft.(61m) to 250 ft.(76m)  
2
2
2
ELECTRODE, WORK AND #21 LEAD  
CONNECTIONS  
A. Connect Electrode and Work Leads to  
Output Terminals.  
1. Set the ON/OFF toggle switch to OFF.  
2. Locate the retractable strain relief loops directly  
below the output terminals in the lower right and  
lower left corners of the Case Front Assembly.  
See Figure A.6.  
3. Pull out the retractable strain relief loops.  
4. Insert the electrode lead through the loop directly  
below the desired polarity (positive or negative).  
Pull through enough cable to reach the output  
terminals.  
FIGURE A.6 - Output Terminals.  
5. Connect electrode lead to the desired terminal  
(positive/negative).  
b. Connect #21 Work Sense Lead to Proper  
Terminal  
6. Tighten the output terminal nut with a wrench.  
There are two work sense lead connection points (+21  
and -21) on terminal strip (T.S.2) located behind the  
hinged access panel on the right side of the case  
front. See 14 Pin MS Type Receptacle section or  
Terminal Strip Section for connection procedure.  
7. Connect the work lead to the other output  
terminal following steps 4-6.  
IDEALARC® DC-600 VRD  
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A-6  
A-6  
INSTALLATION  
PIN  
AUXILIARY POWER AND CONTROL CON-  
NECTIONS  
LEADꢀNO.  
FUNCTION  
A
B
C
D
E
F
32  
GND  
2
115 VAC(3)  
Located at the left side of the front of the welder  
behind a hinged cover is a 115VAC duplex receptacle  
for auxiliary power (60 Hertz Models only). On the right  
side of the case front is a 14 Pin MS type receptacle  
for connection of auxiliary equipment such as wire  
feeders. Also, terminal strips with 115VAC and con-  
nections for auxiliary equipment are located behind the  
hinged access panel on the right side of the case front.  
(see Auxiliary Power Table for details)  
Chassis Connection  
Trigger Circuit  
Trigger Circuit  
Output Control  
Output Control  
Output Control  
4
77  
76  
75  
G
H
I
21  
41  
Work Sense Connection(2)  
42 VAC  
J
K
L
31  
42  
---  
---  
---  
115 VAC(3)  
42 VAC  
---  
---  
---  
AUXILIARY POWER TAbLE  
Voltage and Circuit Breaker Ratings at Auxiliary Power  
Connections for Various Models  
M
N
Table for Codes 11598, 11613  
Table for Codes 11707, 11725  
Auxiliary  
Power  
Connections  
60 Hz  
Models  
50/60 Hz  
Auxiliary  
60 Hz  
Models  
50/60 Hz  
Models  
Models  
Power  
Connections  
TERMINAL STRIPS  
At Duplex  
Receptacle  
15A  
115V  
No Duplex  
At Duplex  
Receptacle  
15A  
115V  
No Duplex  
Terminal strips are available behind the cover on the  
case front to connect wire feeder control cables that  
do not have a 14 Pin MS-type connector. These termi-  
nals supply the connections as shown in the following  
Terminal Strip charts. NOTE: There are two work  
sense lead connection points on the terminal strip.  
Connect both the work sense lead #21 from the 14 pin  
connector and #21 lead of the control cable to “-21”  
when welding positive polarity or to “+21” when weld-  
ing negative polarity.  
Terminal strip  
terminals 31 & 32  
115V 15A 115V 15A  
Terminal strip  
terminals 31 & 32  
115V 15A 115V 15A  
MS-Receptacle 115V 15A 115V 15A  
pins A & J  
MS-Receptacle 42V 10A 42V 10A  
pins I & K  
MS-Receptacle 42V 10A 42V 10A  
pins I & K  
115VAC DUPLEX RECEPTACLE (60 HERTz  
MODELS ONLY)  
The 115VAC duplex receptacle is protected by a 15  
Amp circuit breaker located on the nameplate. The  
receptacle is a NEMA 5-15R.  
TERMINAL STRIP 1 (T.S.1)  
Lead No.  
Function  
14ꢀPIN MS TYPE RECEPTACLE  
(For MS3106A-20-27PX Plug. L.E.C. Part #S12020-32)  
75  
76  
77  
Output Control  
Output Control  
Output Control  
Refer to the Figure A.7 for the available circuits in the  
14 pin receptacle.  
TERMINAL STRIP 2 (T.S.2)  
Function  
42 VAC is available at receptacle pins I and K.  
A 10 amp circuit breaker protects this circuit.  
Lead No.  
+21  
-21  
41  
4
2
31  
32  
Work Connection (Electrode Negative)  
Work Connection (Electrode Positive)(2)  
42 VAC  
On codes 11598 and 11613, 115 VAC is available at  
receptacle pins A and J. A 15 amp circuit breaker pro-  
tects this circuit. (See Figure A.7 for pin allocation).  
Note that the 42 VAC and 115 VAC circuits are electri-  
cally isolated from each other.  
Trigger Circuit  
Trigger Circuit  
115 VAC(1)  
FIGURE A.7  
115 VAC(1)  
FRONT VIEW OF 14-PIN CONNECTOR RECEPTACLE  
Pin location for Codes 11598, 11613  
Pin location for Codes 11707, 11725  
(1) 115VAC circuit is on all models.  
C
                        E
C
                        E
K
K = 4 2  
K = 4 2  
J = 3 1  
I = 4 1  
A = 3 2  
B = G N D  
(2) As shipped from the factory Lead #21 from the 14 Pin connector  
is connected to “-21” on the terminal strip (T.S.2). This is the con-  
figuration for positive welding. If welding negative polarity, con-  
nect lead #21 to the “+21” connection point on the terminal strip  
(T.S.2).  
(3) 115VAC is not available at the 14 Pin connector on Codes 11707,  
11725.  
I = 4 1  
N
B = G N D  
L
L
N
C = 2  
D = 4  
E = 7 7  
C = 2  
D = 4  
E = 7 7  
H = 2 1  
H = 2 1  
G = 7 5  
F = 7 6  
G = 7 5  
F = 7 6  
M
M
IDEALARC® DC-600 VRD  
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b-1  
b-1  
OPERATION  
SAFETY PRECAUTIONS  
Read this entire section of operating instructions  
before operating the machine.  
WARNING  
ELECTRIC SHOCK can kill.  
• Do not touch electrically live parts or  
electrodes with your skin or wet  
clothing.  
• Insulate yourself from the work and  
ground.  
• Always wear dry insulating gloves.  
• Do not use AC welder if your cloth-  
ing, gloves or work area is damp or  
if working on, under or inside work-  
piece.  
Use the following equipment:  
-Semiautomatic DC constant volt-  
age (wire) welder.  
-DC manual (stick) welder.  
-AC welder with reduced voltage control.  
• Do not operate with panels removed.  
• Disconnect input power before servicing.  
------------------------------------------------------------------------  
READ THIS WARNING, PROTECT  
YOURSELF & OTHERS.  
FUMES AND GASES can be  
dangerous.  
• Keep your head out of fumes.  
• Use ventilation or exhaust at the arc, or both, to  
keep fumes and gases from your breathing zone  
and general area.  
WELDING, CUTTING and GOUG-  
ING SPARKS can cause fire or  
explosion.  
• Do not weld near flammable material.  
• Do not weld, cut or gouge on contain-  
ers which have held flammable materi-  
al.  
ARC RAYS can burn.  
• Wear eye, ear, and body protection.  
Observe additional Safety Guidelines  
detailed in the beginning of this manual.  
------------------------------------------------------------------------  
IDEALARC® DC-600 VRD  
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b-2  
b-2  
OPERATION  
GENERAL DESCRIPTION  
DESIGN FEATURES AND ADVANTAGES  
The IDEALARC® DC-600 VRD includes a proprietary design which is  
available in certain arc welding power sources such as the DC 600  
and 400. This internal circuitry applies a high frequency, low voltage  
signal through the Electrode and Work terminals, while disabling the  
output of the power source. The OCV ( open circuit voltage) during  
this period is approximately 2 Volts RMS at 70kHz. When an  
Electrode to Work load of 100 ohms or less is applied, the output of  
the power source is enabled, allowing normal welding operation.  
When the output load is removed, within 0.3 seconds, the output is  
again disabled reducing the OCV to approximately 2 Volts RMS  
• No large output mechanical contactors or Solid State switches such  
as SCR’s, etc; are added to the Electrode to Work output circuit.  
• “Tamper Resistant” design. Circuitry is built into power source, not  
an exterior package which could easily be tampered with.  
• No reduction of power source output rating. This feature does not  
affect the rating of the power source.  
• Self diagnostics upon machine power up. Indicator lights are test-  
ed.  
• Green lamp on when weld voltage is less than 30 volts. If weld volt-  
age exceeds 30 volts, Green lamp turns off and Red lamp turns on.  
• Output is disabled if OCV > 50 volts is sensed.  
• Excellent arc characteristics for optimum constant voltage sub-  
merged arc and Innershield welding performance.  
• A control circuit designed to provide good starting for a large variety  
of processes and procedures.  
The IDEALARC® DC-600 VRD is an SCR controlled three phase  
welding and cutting power source. It uses a single range potentiome-  
ter to control:  
• Submerged Arc Semi-Automatic or Automatic Welding  
• Open Arc Semi-Automatic or Automatic Welding  
• Stick Welding  
• Output Control Potentiometer that provides easy single range con-  
tinuous control.  
• Output Control Switch that provides simple switching from local to  
remote control.  
• Air/Carbon Arc Cutting (Carbon Rod Sizes up to 3/8” Diameter)  
• Output Terminals Switch to energize output terminals either local or  
remote.  
The IDEALARC® DC-600 VRD has a three-position Welding Mode  
Switch to enable the user to operate in one of three modes:  
• Constant Current (CC) Stick also used for Air Carbon Arc Cutting  
Process (AAC)  
• White neon pilot light to confirm that the Input Contactor is ener-  
gized.  
• DC Ammeter and Voltmeter  
• Constant Voltage (CV) Submerged Arc  
• 42VAC 10 Amp auxiliary power available for the wire feeder, circuit  
breaker protected.  
• Constant Voltage (CV) Innershield (also used for FCAW/GMAW)  
• Single MS-type (14 pin) connector for wire feeder.  
• 115VAC 15 Amp auxiliary power available for the wire feeder, circuit  
breaker protected.  
Two VRD models are available:  
• Domestic - 230/460/575V 60 Hertz model  
• Export-415V 50/60 Hertz model  
• 115VAC 15 Amp duplex plug receptacle available on 60 Hertz mod-  
els, circuit breaker protected.  
The optional Multi-Process Switch allows the user to switch between  
semi-automatic or automatic welding and stick welding or air/carbon  
arc cutting without disconnecting the wire feeder equipment control,  
electrode, and work leads.  
• Multi-functional terminal strip for easy connection of wire feeding  
control cables.  
• Recessed, output terminals to avoid any person or object from acci-  
dentally coming into contact with the output terminals and labeled "  
+ " and " - " for easy identification.  
• Thermostatically protected power source.  
RECOMMENDED PROCESSES AND EQUIP-  
MENT  
• Electronic protection circuit to protect power source against over-  
loads.  
• Input line voltage compensation to provide an essentially constant  
output.  
The IDEALARC® DC-600 VRD is designed for GMAW (MIG), FCAW,  
and submerged arc (SAW) within the capacity of the machine. It can  
also be used for stick welding (SMAW) and for air carbon arc (AAC)  
cutting with carbon rods up to 3/8" diameter.  
• SCR electronically controlled welder output provides extra long life,  
especially for highly repetitive welding applications.  
• Solid state 2 and 4 circuit for extra long life.  
• Two circuit solid state control system provides maximum perfor-  
mance and circuit protection.  
The IDEALARC® DC-600 VRD is provided with a three position  
mode switch that selects CV Innershield, CV Submerged Arc, or CC  
Stick.  
• Low profile case provides maximum use of space.  
• Convenient access to all controls.  
The IDEALARC® DC-600 VRD can be easily connected to wire feed-  
ing equipment, including:  
• Output lead strain relief loops to prevent terminal and cable dam-  
age.  
• Semi-automatic wire feeders LN-7, LN-7 GMA, LN-742, LN-8, LN-  
9, LN-9 GMA, LN- 10, LN-15 LN-23P, LN-25, and DH-10.  
• Automatic wire feeders NA-3, NA-5, and NA-5R.  
• Tractors LT-56 and LT-7  
• Easily removed case side, even when stacked.  
• Outdoor operation because enclosure is designed with air intake  
louvers that keep dripping water from entering the unit. Transformer,  
SCR Bridge and choke have special corrosion resistant paint for  
added protection.  
IDEALARC® DC-600 VRD  
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OPERATION  
WELDING CAPAbILITY  
The IDEALARC® DC-600 VRD has the following Output and Duty Cycle based on operation for a 10 minute period:  
600 Amps, 44 Volts at 100%  
680 Amps, 44 Volts at 60%  
750 Amps, 44 Volts at 50%  
MEANINGS OFꢀGRAPHICAL SYMbOLS ONꢀCASEꢀFRONT  
Input POWERꢀON/OFF Switch  
LOCAL/REMOTE Switch  
SYMbOL  
SYMbOL  
MEANING  
MEANING  
Control Of Output Voltage and  
Current is Via IDEALARC® DC-600  
VRD's Control Dial  
ON  
Remote Control of Output Voltage  
and Current  
OFF  
MODE Switch  
INPUT POWER  
CC STICK: Shielded Metal Arc  
Welding (SMAW), this switch  
position is also used for Air  
Carbon Arc Cutting (AAC)  
Pilot Light  
CV SUbMERGED ARC:  
Constant Voltage Submerged  
Arc Welding (SAW)  
Input power on when light is illuminated  
(except for abnormal conditions).  
Indicates main Transformer is operating.  
CV INNERSHIELD: Flux Cored  
Arc Welding (FCAW), this switch  
position is also used for Gas  
Metal Arc Welding (GMAW).  
OUTPUT CONTROL  
Output Terminal Connections  
OUTPUT VOLTAGE  
AND CURRENT  
Positive Output Terminal  
Clockwise Increase of Output  
Voltage and Current  
Negative Output Terminal  
WARNINGꢀIdentification  
TERMINALS ON/REMOTE Switch  
OUTPUT TERMINALS  
ENERGIzED  
Warning Identification  
Circuit breaker  
Circuit Breaker (two breakers: 15A for  
115V circuit and 10A for 42V circuit)  
Remote Control of Output Terminals  
(Energized or Non-Energized)  
Thermal Protection Light  
On when power source exceeds nor-  
mal operating temperature.  
IDEALARC® DC-600 VRD  
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b-4  
OPERATION  
MEANING OF GRAPHICAL MEANING OF GRAPHICAL  
SYMbOLS ON RATING PLATE SYMbOL FORꢀGROUNDꢀCON-  
(LOCATED ON CASE bACK)  
NECTION  
Designates welder complies with  
National Electrical Manufacturers  
Signifies the equipment connection  
point for the protective earth ground  
NEMAEW1(100%)  
Association requirements EW 1  
Class I with 100% duty cycle at  
600Amps output.  
CONTROLS AND SETTINGS  
All operator controls and adjustments are located on  
the Case Front Assembly of the IDEALARC® DC-600  
VRD. See Figure B.1 for the location of each control.  
Three Phase Input Power  
12  
1
D
14  
5
3
6
8
9
 4
3 Phase transformer with rectified  
DC output  
3
8
6
9
5
15  
4
14  
Line Connection  
1
5
6
4
7
3
7
8
2
Gas Metal Arc Welding (GMAW)  
Flux Cored Arc Welding (FCAW)  
9
1
10  
D
C
-
6
0
0
V
R
D
2
11  
10  
Shielded Metal Arc Welding (SMAW)  
Submerged Arc Welding (SAW)  
12  
13  
FIGURE b.1 - CONTROL PANEL KEYS  
1. Input POWER ON/OFF Switch  
This toggle switch turns the machine on or off.  
Putting the switch in the ON “ ” position ener-  
Designates welder complies with  
both Underwriters Laboratories (UL)  
standards and Canadian Standards  
Association (CSA) standards. (60  
Hertz Models)  
gizes the machine’s input contactor applying input  
power to the machine. Switching the switch to the  
NRTL/C  
OFF “  
tactor.  
” position de-energizes the input con-  
2. POWER Light  
When the POWER switch is in the ON position the  
machine’s white POWER light will illuminate. If the  
input contactor de-energizes the machine in an  
abnormal situation the pilot light will turn off. In this  
situation it may be necessary to reset the machine  
by switching the POWER switch to the OFF and  
then to the ON position. (See Overload,  
Overcurrent, and Fault Protection Section)  
IDEALARC® DC-600 VRD  
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b-5  
b-5  
OPERATION  
3. OUTPUT CONTROL  
11. Terminal Strip Cover Panel  
This control provides continuous control of the  
machine’s output voltage and current from mini-  
mum to maximum (typical full pot range between  
15 to 44 volts and 90 to 750 amps) as it is rotated  
clock-wise. Voltage or current control is deter-  
mined by setting of Mode Switch (CV or CC).  
Rotate this panel to gain access to the circuits  
made available at the two terminal strips (T.S.1  
and T.S.2). These terminal strips contains the  
same circuits as the 14 pin MS-receptacle. There  
is a box connector adjacent to this cover for rout-  
ing leads to the terminal strips.  
4. OUTPUT TERMINALS ON/REMOTE Switch  
When this switch is in the REMOTE “  
12. Negative Output Terminal  
” posi-  
This output terminal is for connecting a welding  
cable. To change welding polarity and for proper  
welding cable size refer to Electrode and Work  
Cables in the Installation Section.  
tion, the IDEALARC® DC-600 VRD’s output termi-  
nals will be electrically “cold” until a remote device  
such as a wire feeder closes the #2 and #4 circuit  
in the MS-receptacle or terminal strip (T.S.2).  
When this switch is in the ON “  
” position the  
13. Positive Output Terminal  
machine’s output terminals will be electrically  
energized all the time.  
This output terminal is for connecting a welding  
cable. To change welding polarity and for proper  
welding cable size refer to Electrode and Work  
Cables in the Installation Section.  
5. LOCAL/REMOTE Switch  
When this switch is set to the LOCAL “  
“ posi-  
tion, control of the output voltage and current is via  
the OUTPUT CONTROL on the IDEALARC® DC-  
600 VRD’s control panel. When this switch is set  
14. VRD Lights  
When VRD is active, in CC mode, these lights  
illuminate based on the stud voltage while weld-  
ing. The green light will be on when the welding  
voltage is under 30 volts and the red light light will  
turn on when the voltage is 30 volts or greater.  
to the REMOTE “  
” position, control is  
through a remote source such as a wire feeder via  
the #75, #76, and #77 leads in the MS-receptacle  
or terminal strip (T.S.1).  
15. Thermal Protection Light (Only on Codes  
11707 and 11725)  
6. Mode Switch  
This switch allows for selecting the welding  
process to be used:  
An amber light on the machine control panel indi-  
cates when either of the two protective ther-  
mostats has opened. Output power will be dis-  
abled temporarily. Thermostat will automatically  
reset when the machine cools to an acceptable  
operating temperature.  
CC STICK-for SMAW and AAC  
CV SUbMERGED ARC- for SAW  
CV INNERSHIELD- for FCAW and GMAW  
7. 115VAC Duplex Receptacle (60 Hertz Models)  
This receptacle provides up to 15 amps of 115  
VAC auxiliary power.  
AUXILIARY POWER IN MS-RECEP-  
TACLE  
8. 115VAC 15 Amp Circuit breaker  
42 volt AC auxiliary power, as required for some wire  
feeders, is available through the wire feeder MS-  
receptacle. A 10 amp circuit breaker protects the 42  
volt circuit from overloads.  
This breaker protects the 115 VAC auxiliary cir-  
cuits located in the duplex receptacle, terminal  
strip (T.S.2) and MS-receptacle.  
9. 42VAC 10 Amp Circuit breaker  
This breaker protects the 42VAC auxiliary circuits  
located in the terminal strip (T.S.2) and MS-recep-  
tacle.  
On Codes 11598 and 11613, IDEALARC® DC-600  
VRD machines supply 115 volt AC auxiliary power  
through the wire feeder receptacle. A 15 amp circuit  
breaker protects the 115 volt circuit from overloads.  
10. 14 Pin MS-Receptacle  
This connector provides easy connection for a  
wire feeder control cable. It provides connections  
for auxiliary power, output switching, remote out-  
put control, wire feeder voltmeter sense lead and  
ground. Refer to 14 Pin MS Type Receptacle in  
the Installation Section for information about the  
circuits made available at this receptacle.  
IDEALARC® DC-600 VRD  
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OPERATION  
Whenever the CC welding mode is selected and  
power is turned on, or power is on and the welding  
mode is changed from Constant Voltage (CV) to  
Constant Current (CC), the VRD circuitry performs a  
self test for approximately five seconds. For one sec-  
ond the input contactor and the cooling fan will turn  
on, then off. With welding inhibited, the studs will be  
examined. Both VRD lights will be on to indicate that  
the machine is in self test mode.  
OVERLOAD, OVERCURRENT, AND  
FAULT PROTECTION  
This welder has thermostatic protection from exces-  
sive duty cycles, overloads, loss of cooling, and high  
ambient temperatures. When the welder is subjected  
to an overload or loss of cooling, a thermostat will  
open. The input contactor will open and remain open  
until the machine cools; the white POWER light stays  
illuminated. No welding is possible during this cool  
down period. The machine will reset automatically  
when the thermostat cools.  
After passing the self test, only the green light remains  
on and the machine is ready to weld. If the test fails,  
both lights will remain on and welding remains inhibit-  
ed. This could be caused by the stick electrode hold-  
er being shorted to work, or if an across the arc wire  
feeder, such as the LN 25, is connected to the power  
source.  
The power source is also protected against overcur-  
rents in the SCR bridge assembly through an elec-  
tronic protection circuit. This circuit senses currents  
over 780 amps on the power source and opens the  
input contactor should the overcurrent remain for a  
predetermined time (the white POWER light also turns  
off).  
To use an across the arc feeder in CC mode on a  
VRD model, disconnect the feeder’s work sense lead  
prior to the self test. After passing the self test, recon-  
nect the work sense lead.  
The predetermined time varies with the amount of  
overcurrent; the greater the overcurrent, the shorter  
the time. The input contactor will remain open until  
the power source is manually started by resetting the  
POWER ON/OFF toggle switch.  
• In CC mode, the VRD will reduce the output voltage  
regardless of the position of the “TERMINALS  
ON/REMOTE” Switch.  
• The voltmeter will display zero volts until the elec-  
trode contacts the work and establishes the welding  
arc.  
For codes 11707 and above.  
The power source is protected against overvoltage  
when not welding in CC mode. If the protection circuit  
senses voltage in excess of 49V at the studs when no  
welding is taking place, the POWER light will turn off.  
The input contactor will open up and remain open until  
the power source is manually restarted by toggling the  
ON/OFF switch.  
LED STATUS  
LED STATUS  
RED  
ON  
ON  
OFF  
OFF  
GREEN  
ON  
OFF  
ON  
Power source is in self test mode.  
Output voltage is greater than 30 V.  
Output voltage is less than 30 V.  
Power source is in CV mode.  
OFF  
The power source circuitry is protected from faults on  
leads 75, 76, or 77. If any of these leads are connect-  
ed to either the positive or negative output leads, the  
IDEALARC® DC-600 VRD will either shut down com-  
pletely (input contactor opens and white POWER light  
turns off), or will operate at minimum output thus pre-  
venting any damage to the IDEALARC® DC-600  
VRD. If IDEALARC® DC-600 VRD shuts down, it  
must be manually started by resetting the POWER  
ON/OFF toggle switch.  
NOTE:  
Under normal circumstances, the machine will never  
be able to exceed 49 volts while not welding. If,  
under abnormal circumstances, the output voltage  
were to exceed 49 volts while not welding, the VRD  
turns the output off. The green light would be on  
because the voltage would be zero and the pilot light  
will be off, but establishing an arc would not be pos-  
sible. The machine’s “POWER ON/OFF” Switch  
must be cycled off, then back on, to restore normal  
operation.  
VRD (VOLTAGE REDUCTION  
DEVICE) OPERATION  
The VRD electronic circuitry is designed to reduce the  
OCV of the power source in the Constant Current  
(CC) Stick welding mode only. The operation of the  
machine with the VRD is slightly different than the  
operation of a standard machine. The following  
describes the machine operation with the VRD  
installed in the DC600.  
IDEALARC® DC-600 VRD  
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OPERATION  
The Lincoln VRD circuit meets the requirements of  
3. Set the Welding Mode switch to welding process  
being used:  
• CC STICK (for SMAW and AAC)  
4. Turn the POWER ON/OFF Toggle Switch to the  
“ON” position:  
AS1674.2-2007, Safety in welding and allied  
processes - Electrical, for Category C environments.  
Category C environments include coffer dams,  
trenches, mines, in rain, etc.  
• The white pilot light glows and the fan starts for 1  
second.  
The Lincoln VRD circuit also meets recommendation  
of ANSI Z49.1- 2005, Safety in Welding, Cutting and  
Allied Processes, for use in 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 sit-  
ting, kneeling or lying, if there is a high risk of  
unavoidable or accidental contact with the workpiece  
or ground ).  
• The machine continues the 5 second pretest indi-  
cated by both red and green VRD lights glowing.  
When the red light turns off, the pilot light turns on  
and the fan restarts, the machine is ready.  
5. Set OUTPUT CONTROL Potentiometer to desired  
current.  
6. Set the OUTPUT TERMINALS switch to either  
“ON” ( output terminals active) or “REMOTE” (out-  
put terminals active when #2 and #4 is closed by  
remote device such as wire feeder).  
7. Make the weld.  
OPERATING STEPS  
The following procedures are for using the IDE-  
ALARC® DC-600 VRD in the local control mode of  
operation. For remote control of the machine, see the  
Remote Control of Machine Operation section.  
REMOTE CONTROL OF MACHINE  
OPERATION  
Before operating the machine, make sure you have all  
materials needed to complete the job. Be sure you  
are familiar with and have taken all possible safety  
precautions before starting work. It is important that  
you follow these operating steps each time you use  
the machine.  
The toggle switch on the control panel labeled  
“Remote - Panel” gives the operator the option of con-  
trolling the machine output from a remote location. If  
in the Remote position a wire feeder with remote con-  
trol capabilities or a remote control device such as a  
K775 must be connected to terminals 75, 76, and 77.  
Refer to Accessories Section for wire feeder remote  
information.  
CV MODE  
1. Connect the #21 work lead to either + or - on termi-  
nal strip (T.S.2).  
2. Turn on the main AC power supply to the machine.  
3. Set the Welding Mode switch to welding process  
being used:  
• CV SUBMERGED ARC (for SAW)  
• CV INNERSHIELD (for FCAW and GMAW)  
4. Turn the POWER ON/OFF Toggle Switch to the  
“ON” position:  
WELDING PROCEDURE  
RECOMMENDATIONS  
Select Welding Mode Switch position based on type of  
welding to be done.  
1. Innershield Welding (FCAW)/MIG (GMAW)  
Welding: Use the CV INNERSHIELD mode.  
• The white pilot light glows and the fan starts.  
5. Set OUTPUT CONTROL Potentiometer to desired  
voltage.  
6. Set the OUTPUT TERMINALS switch to either  
“ON” ( output terminals energized) or “REMOTE”  
(output terminals energized when #2 and #4 closed  
by remote device such as wire feeder)  
7. Make the weld.  
2. Submerged Arc Welding (SAW): Use the CV  
SUbMERGED ARC mode. If performing high  
speed welding, switch between the CV  
Submerged Arc and the CV Innershield mode and  
use the mode that produces the best welding  
results.  
CC MODE  
1. Connect the #21 work lead to either + or - on termi-  
nal strip (T.S.2).  
2. Turn on the main AC power supply to the machine.  
IDEALARC® DC-600 VRD  
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OPERATION  
GOOD ARC STRIKING GUIDELINES FOR THE NA-3  
WITH THE IDEALARC® DC-600 VRD IN THE CV  
INNERSHIELD, CV SUbMERGED ARC OR CC STICK  
WELDING MODES.  
3. Air/Carbon Arc Cutting (AAC) / Stick Welding  
(SMAW) / High Current, Large Puddle Submerged  
Arc Welding (SAW): Use the CC STICK mode.  
When the IDEALARC® DC-600 VRD is used for  
Air/Carbon Arc cutting, the OUTPUT CONTROL  
potentiometer should be set to "9" initially. Based  
on the size of the carbon being used or the  
process, turn the potentiometer to a lower setting  
as required by the process. You can use carbon  
rods up to 3/8" in diameter at currents as high as  
750 amps with excellent arc control. The welder  
protection circuit protects the machine from  
extremely high short circuiting pulses.  
Following are some basic arc striking techniques that  
apply to all wire feed processes. Using these procedures  
should provide trouble-free starting. These procedures  
apply to single, solid wires and Innershield wires.  
1. Cut the electrode to a sharp point.  
2. Set the NA-3 Open Circuit Voltage Control to the  
same dial setting as the Arc Voltage Control. If this is  
a new welding procedure, a good starting point is to  
set the Open Circuit Voltage Control to # 6.  
SEMI-AUTOMATIC AND  
AUTOMATIC WIRE FEEDING WITH  
THE IDEALARC® DC-600 VRD AND  
WIRE FEEDERS  
NOTE: The open circuit voltage of the  
IDEALARC® DC-600 VRD varies from approximate-  
ly 16 volts to 56 volts in the CV INNERSHIELD or  
CV SUBMERGED ARC modes. The open circuit  
voltage is essentially zero in the CC STICK mode.  
When using the IDEALARC® DC-600 VRD with semi-  
automatic or automatic wire feeding equipment and  
for stick welding or air/carbon arc cutting, it is recom-  
mended that the optional MULTI-PROCESS SWITCH  
be used. This switch permits you to easily change the  
polarity of the connected wire feeding equipment or  
switch to stick welding or air/carbon arc cutting.  
3. Run a test weld. Set proper current, voltage, and  
travel speed.  
• For the best starting performance, the NA-3 Open  
Circuit Voltage Control and Voltage Control setting  
should be the same. Set the Inch Speed Control for  
the slowest inch speed possible.  
• To adjust the Open Circuit Voltage Control to get the  
best starting performance, make repeated starts  
observing the NA-3 voltmeter.  
NA-3 AUTOMATIC WIRE FEEDER  
1. Set the IDEALARC® DC-600 VRD LOCAL/REMOTE  
Switch to REMOTE. Set the OUTPUT TERMINALS  
switch to REMOTE. NOTE: Later model NA-3 auto-  
matic wire feeders are capable of cold starts when  
the NA-3 Mode switch is in the CV or CCꢀmode posi-  
tion. Some earlier models are capable of cold start-  
ing only in the CC mode position. Cold starting  
enables you to inch the wire down to the work, auto-  
matically stop, and automatically energize the flux  
hopper valve.  
When the voltmeter pointer swings smoothly up to  
the desired arc voltage, without undershooting or  
overshooting the desired arc voltage, the Open  
Circuit Voltage Control is set properly.  
If the voltmeter pointer overshoots the desired volt-  
age and then returns back to the desired voltage, the  
Open Circuit Voltage Control is set too high. This  
can result in a bad start where the wire tends to  
"Blast off."  
2. Set the IDEALARC® DC-600 VRD welding mode  
switch for the desired process: CV SUBMERGED  
ARC, CV INNERSHIELD mode or CC STICK mode.  
If the voltmeter pointer hesitates before coming up to  
the desired voltage, the Open Circuit Voltage Control  
is set too low.This can cause the electrode to stub.  
3. Set the NA-3 mode Switch Position to either CV or  
CC to match the IDEALARC® DC-600 VRD mode  
selected in step 2.  
4. Start and make the weld.  
• Cold starts. For cold starts, be sure the work piece is  
clean and the electrode makes positive contact with  
the work piece.  
4. Refer to the NA-3 operators manual for instructions  
on how to use the NA-3 in conjunction with the IDE-  
ALARC® DC-600 VRD.  
• Hot "On the Fly" starts. For hot starts, travel should  
begin before the wire contacts the work piece.  
5. Follow the following guidelines for good arc striking  
detailed below for each welding mode.  
IDEALARC® DC-600 VRD  
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OPERATION  
ARC STRIKING WITH IDEALARC® DC-600 VRD AND  
THE NA-3 START bOARD  
If the voltmeter pointer hesitates before coming  
up to the desired voltage, the Open Circuit  
Voltage Control is set too low. This can cause the  
electrode to stub.  
When electrical strikeouts exceed 1 3/4” (44.4mm) an  
NA-3 Start Board may be required to improve arc strik-  
ing.  
• Set NA-3 Start Board current and voltage as  
close to the welding procedure current and volt-  
age as possible.  
When the NA-3 Start Board is used to improve arc strik-  
ing, use the following procedures:  
1. Set start time at 0.  
NOTE: The Start Board current and voltage  
should be as close as possible to the welding pro-  
cedure current and voltage, while still getting sat-  
isfactory starts.  
2. Set NA-3 start current and start voltage at mid-  
range.  
3. Set the NA-3 output current and voltage to the prop-  
er settings for the welding procedure to be used.  
• Set the start time to as low a time as possible  
while still getting satisfactory starts.  
4. Turn the Start Board Timer to maximum.  
5. Set Start Board current and voltage control.  
7. Start and make the weld.  
IDEALARC® DC-600 VRD POWER  
SOURCE SETTING WHEN CONNECTED  
TO NA-5 WIRE FEEDER  
• Set the Start Board current control to 1 1/2 dial num-  
bers below that set on the NA-3 current control.  
When using the IDEALARC® DC-600 VRD with the  
NA-5 wire feeder, set the controls on the IDEALARC®  
DC-600 VRD as follows for the best performance:  
• Set the Start Board voltage control equal with the  
NA-3 voltage control setting.  
NOTE: These Start Board current and voltage set-  
tings result in a start up current that is lower than  
the NA-3 current setting and approximately equal  
with the NA-3 voltage setting for the desired weld-  
ing procedure.  
1. Turn OFFꢀmain ACꢀinput power supply to the IDE-  
ALARC® DC-600 VRD.  
2. Connect the electrode cables to terminal polarity  
to be used.  
6. Establish the correct arc striking procedure with  
the NA-3 Start Board timer set at maximum.  
3. Connect the #21 work lead (on T.S.2) to the  
same polarity as the work cable connection.  
• For the best starting performance, the NA-3 Open  
Circuit Voltage Control and Voltage Control set-  
ting should be the same. Set the Inch Speed  
Control for the slowest inch speed possible.  
4. Set the IDEALARC® DC-600 VRD  
LOCAL/REMOTE Switch to REMOTE.  
5. Set the IDEALARC® DC-600 VRD OUTPUT  
TERMINALS switch to REMOTE.  
• To adjust the Open Circuit Voltage Control to get  
the best starting performance, make repeated  
starts observing the NA-3 voltmeter.  
6. Set the IDEALARC® DC-600 VRD WELDING  
MODE SWITCH to the position that matches the  
welding process being used.  
When the voltmeter pointer swings smoothly up to  
the desired arc voltage, without undershooting or  
overshooting the desired arc voltage, the Open  
Circuit Voltage Control is set properly.  
• For submerged arc welding, set WELDING  
MODE SWITCH to CV SUBMERGED ARC posi-  
tion.  
If the voltmeter pointer overshoots the desired  
voltage and then returns back to the desired volt-  
age, the Open Circuit Voltage Control is set too  
high. This can result in a bad start where the wire  
tends to "Blast off."  
• For all open arc welding processes set WELDING  
MODE SWITCH to CV INNERSHIELD position.  
IDEALARC® DC-600 VRD  
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C-1  
C-1  
ACCESSORIES  
Undercarriages (K817P, K842)  
WIRE FEEDERS AND TRACTORS  
For easy moving of the machine, optional undercar-  
riages are available with polyolefin wheels (K817P) or  
a platform undercarriage (K842) with mountings for  
two gas cylinders at rear of welder.  
The IDEALARC® DC-600 VRD can be used to power  
any of the following Lincoln Wire Feeders and  
Tractors:  
Semi-Automatic Wire Feeders:  
DH-10  
LN-7  
Paralleling Kit (K1611-1)  
LN-9  
LN-9 GMA  
LN-23P  
LN-25  
Paralleling of two VRD models or a standard model  
with a VRD model is not recommended.  
LN-7 GMA  
LN-742  
LN-8  
LN-10  
Tig Module (K930-2)  
Automatic Wire Feeders:  
NA-3  
NA-5  
Portable high frequency generator for AC/DC TIG  
welding.  
NA-5R  
Tractors:  
LT-7  
FACTORY OR FIELD INSTALLED  
OPTIONS  
LT-56  
FIELD INSTALLED OPTIONS  
Multi-Process Switch (K804-1)  
Remote Output Control (K775 or K857  
with K864 Adapter)  
The MULTI-PROCESS SWITCH gives you the ability  
to:  
• Switch between "stick welding or air/carbon arc cut-  
ting" and using a semi-automatic or automatic wire  
feeder.  
• Change the polarity of a semi-automatic or auto-  
matic wire feeder without changing any electrical  
cable connections.  
An optional “remote out control” is available. The  
K775 is the same remote control that is used on other  
Lincoln power sources. The K775 consist of a control  
box with 28 feet (8.5mm) of four conductor cable. This  
connects to terminals 75,76, and 77 on the terminal  
strip (T.S.1) and the case grounding screw so marked  
with the symbol “  
” on the machine. These termi-  
See Figure C.1  
nals are located behind the hinged cover on the case  
front. This control will give the same control as the  
output control on the machine.  
FIGURE C.1 - MULTI-PROCESS SWITCH  
The K857 is similar to the K775, except the K857 has  
a 6-pin MS-style connector. The K857 requires a  
K864 adapter cable which connects to the 14-pin con-  
nector on the case front.  
+
Remote Control Adapter Cable (K864)  
STICK ORꢀ  
-
AIRꢀ  
CARBONꢀ  
ARC  
CABLE RECEPTACLE (6 SOCKET)  
TO: K857 REMOTE CONTROL  
STRAIGHT PLUG (14 PIN)  
TO POWER SOURCE  
CABLE RECEPTACLE (14 SOCKET)  
TO: LN-7 WIRE FEEDERS  
+
A "V" cable 12" (.30 m) long to connect a K857  
Remote Control (6-pin connector) with an LN-7 wire-  
feeder (14-pin connector) and the machine (14-pin  
connector). If a remote control is used alone the wire-  
feeder connection is then not used.  
STICK OR  
WIRE  
FEEDER  
CABLES  
AIR/CARBON  
ARC CABLES  
IDEALARC® DC-600 VRD  
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C-2  
C-2  
ACCESSORIES  
The MULTI-PROCESS SWITCH has two sets of out-  
put terminals. You connect the wire feeder unit cables  
to the set of terminals on the left side of the box and  
the stick or air/carbon arc cables to the set of termi-  
nals on the right side (facing the front of the machine)  
as shown in Figure C.1. The output terminals are pro-  
tected against accidental contact by hinged covers.  
TERMINAL  
STRIP COVER  
BOX ꢀ  
CONNECTOR  
21+  
21- 41  
4
2
31 32  
75 76 77  
When the MULTI-PROCESS SWITCH is in the "Stick  
or Air/Carbon Arc" position, only those terminals are  
energized. The wire feeder nozzle or gun and elec-  
trode are not electrically "hot" when in this mode.  
CONTROL  
LEADS  
NEGATIVE (–)  
OUTPUT  
STUD  
POSITIVE (+)  
OUTPUT  
STUD  
+
Follow these steps to install the MULTI-PROCESS  
SWITCH:  
ELECTRODE  
CABLE  
ELECTRODE  
CABLE  
WORK  
+
STICK AIR/CARBON  
ARC WELDING  
EQUIPMENT  
WIRE  
FEEDER  
1. Confirm that the IDEALARC® DC-600 VRD  
POWER ON/OFF switch is in the OFF position.  
ELECTRODES  
WORK  
CABLE  
WORK  
CABLE  
2. Disconnect main AC input power to the IDE-  
ALARC® DC-600 VRD.  
JUMPER (IF NEEDED  
SEE INSTRUCTIONS)  
FIGURE C.2 - MULTI-PROCESS SWITCH  
CAbLE CONNECTIONS.  
3. Open the terminal strip hinged cover located on  
the Case Front Assembly.  
4. The MULTI-PROCESS SWITCH is mounted to  
the case front with four 1/4” self-tapping screws.  
The screw holes are 13.8” apart side to side and  
4.5” apart top to bottom, Run one of the 1/4”  
screws part way in and out of the screw holes to  
open them up. Make sure that the two sleeved  
control leads do not get pinched when hanging  
the switch; route them out the side to the right of  
the switch. Support the switch in position and start  
the four screws, then tighten them.  
8. Connect the left cable from the MULTI-PROCESS  
SWITCH (facing the front of the machine) to the  
IDEALARC® DC-600 VRD negative (-) output ter-  
minal. See Figure C.2.  
9. Connect the wire feeder electrode and work  
cables. See Figure C.2.  
• Insert the wire feeder electrode and work cables  
through the strain relief loop on the left side of the  
IDEALARC® DC-600 VRD (facing the front of the  
machine).  
5. Route the MULTI-PROCESS SWITCH control  
leads through the strain-relief box connectors and  
into the terminal strip. Connect wire feeder control  
cable as specified in specific connection diagram  
and make other terminal strip connections as  
specified on the connection diagram for the  
Lincoln wire feeder being used.  
• Connect the wire feeder electrode and work  
cables  
to  
the  
electrode  
and  
work  
terminals on the left side of the MULTI-PROCESS  
SWITCH.  
10. Connect wire feeder control cable and make other  
terminal strip connections as specified on the  
connection diagram for the Lincoln wire feeder  
being used.  
6. Connect the control leads from the MULTI-  
PROCESS SWITCH to terminals #2 and #4 on  
the IDEALARC® DC-600 VRD's terminal strip.  
11. Set the IDEALARC® DC-600 VRD OUTPUT  
TERMINALS switch to REMOTE.  
7. Connect the right cable from the MULTI-  
PROCESSꢀSWITCH (facing the front of the  
machine) to the IDEALARC® DC-600 VRD posi-  
tive (+) output terminal. See Figure C.2.  
IDEALARC® DC-600 VRD  
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C-3  
C-3  
ACCESSORIES  
12. Connect stick or air/carbon arc electrode and work  
cable. See Figure C.2.  
CONNECTIONS FOR SEMI-AUTO-  
MATIC OR AUTOMATIC WIRE FEED-  
ER CONTROL  
• Insert the electrode and work cables through the  
strain relief loop on the right side (facing the front  
of the machine) of the IDEALARC® DC-600 VRD.  
1. Set the IDEALARC® DC-600 VRD ON/OFF  
switch to OFF.  
• Connect the electrode cable to the "Positive" ter-  
minal on the right side of the MULTI-PROCESS  
SWITCH.  
2. Set  
the  
IDEALARC®  
LOCAL/REMOTE switch to REMOTE.  
DC-600  
VRD  
3. Set the IDEALARC® DC-600 VRD OUTPUT TER-  
MINALS switch to REMOTE.  
• Connect the work cable to the "Negative" terminal  
on the right side of the MULTI-PROCESS  
SWITCH.  
4. Set the IDEALARC® DC-600 VRD MODE switch  
to the welding process being used.  
NOTE: The instructions above are for connecting  
the stick polarity positive. To change the polarity,  
turn the IDEALARC® DC-600 VRD OFF, and  
reverse the cables.  
5. Refer to the proper connection diagram in the DIA-  
GRAMS section for more information.  
NOTE: When it is not necessary to have separate  
ground cables for stick and semi-automatic or  
automatic welding, connect a jumper from the  
MULTI-PROCESS SWITCH "Work" terminal to  
the MULTI-PROCESS SWITCH "negative" termi-  
nal. See Figure C.2.  
To operate the MULTI-PROCESS SWITCH, refer to  
the operating instructions on the switch nameplate.  
IDEALARC® DC-600 VRD  
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D-1  
D-1  
MAINTENANCE  
SAFETY PRECAUTIONS  
WARNING  
ELECTRIC SHOCK CAN  
KILL.  
Only qualified personnel should  
perform this maintenance.  
Turn the input power OFF at the disconnect  
switch or fuse box before working on this equip-  
ment.  
Do not touch electrically hot parts.  
ROUTINE AND PERIODIC  
MAINTENANCE  
1. Disconnect input AC power supply lines to the  
machine before performing periodic maintenance,  
tightening, cleaning, or replacing parts.  
Perform the following daily:  
1. Check that no combustible materials are in the  
welding or cutting area or around the machine.  
2. Remove any debris, dust, dirt, or materials that  
could block the air flow to the machine for cooling.  
3. Inspect the electrode cables for any slits or  
punctures in the cable jacket, or any condition that  
would affect the proper operation of the machine.  
Perform Periodically:  
Clean the inside of the machine with low pressure air  
stream. Clean the following parts.  
Main transformer and choke.  
Electrode and work cable connections.  
SCR rectifier bridge and heat sink fins.  
Control board.  
Firing board.  
Fan Assembly.  
NOTE: The fan motor has sealed bearings which  
require no maintenance.  
------------------------------------------------------------------------  
IDEALARC® DC-600 VRD  
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E-1  
E-1  
TROUbLESHOOTING  
HOW TO USE TROUbLESHOOTING GUIDE  
WARNING  
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.  
Unauthorized repairs performed on this equipment may result in danger to the technician and  
machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical  
Shock, please observe all safety notes and precautions detailed throughout this manual.  
__________________________________________________________________________  
This Troubleshooting Guide is provided to help you  
locate and repair possible machine malfunctions.  
Simply follow the three-step procedure listed below.  
Step 3. RECOMMENDED COURSE OF ACTION  
This column provides a course of action for the  
Possible Cause, generally it states to contact your  
local Lincoln Authorized Field Service Facility.  
Step 1. LOCATE PROBLEMꢀ(SYMPTOM).  
Look under the column labeled “PROBLEM (SYMP-  
TOMS)”. This column describes possible symptoms  
that the machine may exhibit. Find the listing that  
best describes the symptom that the machine is  
exhibiting.  
If you do not understand or are unable to perform the  
Recommended Course of Action safely, contact your  
local Lincoln Authorized Field Service Facility.  
Step 2. POSSIBLE CAUSE.  
The second column labeled “POSSIBLE CAUSE” lists  
the obvious external possibilities that may contribute  
to the machine symptom.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-2  
E-2  
TROUbLESHOOTING  
P.C. bOARD TROUbLESHOOTING PROCEDURES  
• If the P.C. Board uses protective shorting jumpers,  
don’t remove them until installation is complete.  
WARNING  
ELECTRIC SHOCK can kill.  
• If you return a P.C. Board to The Lincoln Electric  
Company for credit, it must be in the static-shield-  
ing bag. This will prevent further damage and  
allow proper failure analysis.  
Have an electrician install and ser-  
vice this equipment. Turn the input  
power OFF at the fuse box before  
working on equipment. Do not touch  
electrically hot parts.  
4. Test the machine to determine if the failure symp-  
tom has been corrected by the replacement P.C.  
board.  
CAUTION: Sometimes machine failures appear to be  
due to P.C. board failures. These problems can some-  
times be traced to poor electrical connections. To  
avoid problems when troubleshooting and replacing  
P.C. boards, please use the following procedure:  
NOTE: It is desirable to have a spare (known good)  
P.C. board available for P.C. board troubleshooting.  
NOTE: Allow the machine to heat up so that all electri-  
cal components can reach their operating tem-  
perature.  
1. Determine to the best of your technical ability that  
the P.C. board is the most likely component caus-  
ing the failure symptom.  
5. Remove the replacement P.C. board and substitute  
it with the original PC board to recreate the original  
problem.  
2. Check for loose connections at the P.C. board to  
assure that the P.C. board is properly connected.  
3. If the problem persists, replace the suspect P.C.  
board using standard practices to avoid static elec-  
trical damage and electrical shock. Read the warn-  
ing inside the static resistant bag and perform the  
following procedures:  
• If the original problem does not reappear by substi-  
tuting the original board, then the PC board was not  
the problem. Continue to look for bad connections  
in the control wiring harness, junction blocks, and  
terminal strips.  
P.C. board can be damaged by static electricity.  
• If the original problem is recreated by the substitu-  
tion of the original board, then the PC board was  
the problem. Reinstall the replacement PC board  
and test the machine.  
• Remove your body’s static  
charge before opening the static-  
shielding bag. Wear an anti-static  
wrist strap. For safety, use a 1  
Meg ohm resistive cord connect-  
6. Always indicate that this procedure was followed  
when warranty reports are to be submitted.  
ed to a grounded part of the  
equipment frame.  
ATTENTION  
Static-Sensitive  
Devices  
Handle only at  
Static-Safe  
Workstations  
NOTE: Following this procedure and writing on the  
warranty report, “INSTALLED AND SWITCHED PC  
BOARDS TO VERIFY PROBLEM,” will help avoid  
denial of legitimate PC board warranty claims.  
• If you don’t have a wrist strap,  
touch an unpainted, grounded,  
part of the equipment frame.  
Keep touching the frame to pre-  
vent static build-up. Be sure not  
to touch any electrically live parts  
at the same time.  
Reusable  
Container  
Do Not Destroy  
• Tools which come in contact with the P.C. Board  
must be either conductive, anti-static or static-dis-  
sipative.  
• Remove the P.C. Board from the static-shielding  
bag and place it directly into the equipment. Don’t  
set the P.C. Board on or near paper, plastic or  
cloth which could have a static charge. If the P.C.  
Board can’t be installed immediately, put it back in  
the static-shielding bag.  
IDEALARC® DC-600 VRD  
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E-3  
E-3  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Major Physical or Electrical  
Damage is Evident  
Contact the Lincoln Electric Service  
Dept. (216) 383-2531 or 1-800-  
833-9353 (WELD)  
The Machine is dead- The Input  
contactor does not operate.  
1. Check for blown or missing  
fuses in input lines.  
2. Check the three- phase input  
line voltage at the machine.  
The input voltage must match  
the rating plate and reconnect  
panel.  
3. Power ON/OFF switch may be  
defective.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
4. Rectifier bridge may be defec-  
tive.  
5. VRD P.C. board may be defec-  
tive.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-4  
E-4  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Input contactor (CR1) chatters.  
1. The input line voltage may be  
low. Check all three phases.  
2. Make sure input line voltage  
matches machine rating and  
the reconnect panel is connect-  
ed correctly for the line voltage.  
Variable or sluggish welding arc.  
1. Poor electrode or work lead con-  
nection.  
2. Welding cables too small.  
3. Welding current or voltage too  
low.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
Output Control Pot. not functioning  
in “LOCAL” control.  
1. LOCAL/REMOTE Switch (S3)  
faulty or in wrong position.  
2. Faulty OUTPUTꢀCONTROL Pot.  
No output control in “REMOTE”  
control.  
1. LOCAL/REMOTE Switch (S3)  
faulty or in wrong position.  
2. Faulty Remote Control Unit.  
115VAC duplex receptacle not  
working. (60HZ machines only)  
1. 115VAC Circuit Breaker tripped.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-5  
E-5  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Machine input contactor operates  
but machine has no weld  
output.Fan runs and pilot light  
glows.  
1. Place OUTPUT TERMINAL  
Switch to “ON”, or install a  
jumper from #2 to #4 on  
machine terminal strip. If  
machine weld output is  
restored the problem is in the  
wire feeder or control cable.  
2. If remote control is not being  
used make certain the  
LOCAL/REMOTE SWITCH  
(SW3) is in the "Local" position.  
3. Check 42V Circuit Breaker in  
the front panel. Reset if neces-  
sary.  
4. Check for loose or faulty weld  
cable connections.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
5. Trigger circuit not working.  
6. If machine functions properly in  
CV modes but not in CC mode,  
check for loose connections at  
VRD P.C. board.  
1. Check for faulty mode switch.  
Red and Green lights do not come  
on for approximately 5 seconds  
when switching to or powering up  
in CC mode.  
2. Check for loose connections at  
VRD P.C. board.  
3. Possible bad VRD P.C. Board.  
1. Check to make sure output is  
not shorted (electrode touching  
work).  
Both red and green lights stay on  
in CC mode well past the 5 second  
pretest time.  
2. If using an across the arc Wire  
Feeder, remove the clamp from  
the output stud until after the 5  
second pretest is complete.  
3. Uncoil output cables.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-6  
E-6  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Machine has maximum weld out-  
put and no control.  
1. LOCAL/REMOTE Switch (S3)  
in wrong position.  
2. LOCAL/REMOTE Switch (S3)  
is faulty, or an open lead going  
to the LOCAL/REMOTE Switch  
(S3).  
VRD passes self test and green  
light is on, but machine will not  
Weld.  
1. Too much cable inductance.  
• Uncoil output cables, shorten  
cable length, or wrap work and  
electrode cables together.  
2. Too much cable.  
• Maximum cable length (work  
and electrode) is approximately  
300 feet.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
3. Buildup on stick electrode.  
Clean or replace electrode.  
4. Possible shorted bridge rectifier,  
if pilot light is off.  
5. Fault detected after self test.  
Cycle power to reset machine.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-7  
E-7  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Machine has minimum output and 1. If a remote control unit is NOT  
no control.  
connected to the terminal strip  
#75, #76, and #77 terminals, or is  
not connected to the 14 pin MS  
receptacle the LOCAL/REMOTE  
SWITCH must be in the "Local"  
position.  
2. If a remote control cable is con-  
nected to terminals #75, #76 and  
#77 or is connected to the 14 pin  
MS receptacle the leads may be  
"shorted" to the positive weld out-  
put.  
3. Make certain the Three Phase  
input voltage is correct and  
matches the machine rating and  
the reconnect panel.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
The machine does not have maxi-  
mum weld output.  
1. Check all Three-Phase input  
lines at the DC600. Make sure  
input voltages match machine  
rating and reconnect panel.  
2. Put LOCAL/REMOTE SWITCH  
(SW3) in "LOCAL" position. If  
problem is solved then check  
remote control unit or wire  
feeder.  
3. Check for loose welding cable  
connections.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-8  
E-8  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
Machine shuts off (input contactor 1. Remove all welding cables and  
drops out) when the welder output  
terminals are made electrically  
"hot".  
(#2 to #4 closure at terminal strip.)  
or OUTPUT TERMINALS switch  
is in ON position.  
control cables from the DC 600.  
Jumper #2 to #4 at the terminal  
strip or set OUTPUTꢀTERMI-  
NALSꢀswitch to ON position. If  
the machine does NOT shut off  
and normal open circuit voltage  
is present at the welder output  
terminals the problem is exter-  
nal to the DC600. Either the  
remote leads #75, #76 or #77  
are grounded to the negative  
output cable or there is a short  
on the welding output terminals.  
2. If the machine still shuts off  
when all control and welding  
cables are removed then the  
problem is internal to the DC-  
600.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
The DC600 will NOT shut off when  
the Power Switch is turned to  
OFF.  
1. Contact your local Lincoln  
Authorized Field Service  
Facility.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-9  
E-9  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
OUTPUT PRObLEMS  
The weld output terminals are  
always electrically "hot".  
1. Remove any external leads  
hooked to #2 and #4 on the ter-  
minal strip or any connections  
to the 14 pin MS connector.  
Set OUTPUT TERMINALS  
switch to the OFF position. If  
the problem disappears the  
fault is in the control cable or  
wire feeder.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
2. If some open circuit voltage is  
present (over 3VDC.) after per-  
forming Step #1. then the prob-  
lem is within the IDEALARC®  
DC-600 VRD.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-10  
E-10  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
WELDING PRObLEMS  
Poor arc starting when the IDE-  
ALARC® DC-600 VRD is in the  
CV Sub-Arc or CV Innershield  
Modes.  
1. Make sure the proper welding  
procedures are being used.  
(wire feed speed , arc voltage  
and wire size)  
2. Check weld cables for loose or  
faulty connections.  
1. Remove output cables from  
IDEALARC® DC-600 VRD. If  
problem is resolved check for  
external short between welding  
cables. Also check control  
cable (#75, #76, & #77) for  
grounds or shorts.  
Machine has output but trips off  
immediately when wire feed unit  
trigger is activated  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-11  
E-11  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
WELDING PRObLEMS  
Poor arc characteristics in all  
processes.  
1. Check for the correct input volt-  
ages on the three- phase input  
lines at the IDEALARC® DC-600  
VRD.  
2. Make sure the proper welding  
procedures are being used. (wire  
feed speed, arc voltage and wire  
size).  
3. Check the welding cables for  
loose or faulty connections.  
If all recommended possible areas  
of possible cause have been  
checked and the problem persists,  
Contact your local Lincoln  
Authorized Field Service Facility.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-12  
E-12  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
Voltage across leads 255 and 256 should be  
approximately 115VAC. Check voltage across sec-  
ondary winding of the control transformer (T2) which  
supplies leads 255 and 256. Measure +16VDC from  
TEST POINTS “A” to “C” and -10VDC from TEST  
POINTS “A” to “J” on Control board.  
P.C. bOARD TROUbLESHOOTING GUIDE  
FIRING P.C. bOARD  
1. All 10 LED’s must be ON when the POWER  
SOURCE is turned “ON” and the trigger circuit* is  
closed.  
2. LED 2 indicates welder output voltage is being sup-  
plied to the control circuit. LED 2 will be “ON”  
brightly in CC STICK mode with trigger circuit*  
closed and no load. (LED 2 diminishes in bright-  
ness as output voltage is reduced). If LED 2 is not  
“ON”, look for open connection in lead 222 circuit.  
2. LED’s 7, 8, and 9 indicate AC power being supplied  
to the P.C. board from auxiliary windings on the  
main transformer (T1). If a LED is not “ON”, turn the  
machine off and unplug P5 from the firing board.  
Turn the machine back on and check the following  
voltages:  
LED that Check AC voltage between pins specified,  
was off it should be approximately 32VAC .  
3. LED 3 indicates power is being applied to FAULT  
PROTECTION RELAY (CR2). LED 3 will be “ON”  
when machine POWER is “ON”. LED 3 goes “OUT”  
when CR2 drops out which turns off the INPUT  
CONTACTOR (CR1). When LED 3 goes out, LED 4  
comes “ON”. See step 3.  
7
8
9
P5 pins 15 & 16 (wires 203,204)  
P5 pins 7 & 8 (wires 205,206)  
P5 pins 5 & 6 (wires 207,208)  
3. If all voltages are present, turn power off, and plug  
P5 back into J5. Turn power back on. If LED’s are  
still “OUT”, replace Firing P.C.B.  
4. LED 4 indicates an overload or fault condition; LED  
should not be on. If this LED comes “ON”, the  
INPUT CONTACTOR (CR1) will turn off and the red  
POWER light stays illuminated. This was do to  
either a short across output, or a current draw in  
excess of 780A, or leads 75, 76, or 77 grounded to  
negative output lead. Remove short or reduce out-  
put current or eliminate ground. Welder must be  
reset by turning POWER ON/OFF switch to “OFF”  
and then back to “ON”. If no short or loads above  
780A exists or no ground, replace Control P.C.B.  
4. If voltages were not present then check the wiring  
back to the auxiliary windings for a possible open.  
5. LED 10 senses when trigger circuit* is closed.  
Close trigger circuit, LED10 should be on be “ON”.  
Open trigger circuit, LED 10 should be “OFF”. If  
LED does not come “ON”, check to make sure  
leads 2,4, or 41 are not broken.  
6. LED’s 1 through 6 indicate gate signals are being  
sent to the main SCR’s 1 through 6 respectively. If  
LED 5 (located on Control Board) is “ON”, along  
with LED’s 7, 8, and 9 (on Firing P.C.B), and LED’s  
5. LED 5 indicates DC control voltage (which supplies  
Firing board) is present. LED 5 will be “ON” in CV  
INNERSHIELD mode with trigger circuit* closed,  
CONTROL POT at minimum, and no load. (LED 5  
diminishes in brightness as output voltage is  
increased). Replace P.C. board if LED 5 did not go  
“ON”.  
1
231  
through 6 are “OFF”, check to make sure lead  
between Control board and Firing board is  
not broken  
7. If any one of LED’s 1 through 6 are “OFF” and  
LED’s 7, 8, and 9 are “ON”, replace the Firing  
P.C.B.  
6. LED 6 indicates trigger circuit* condition. LED 6  
“ON” indicates trigger circuit is closed. LED 6 “OFF”  
indicates trigger circuit is open. If LED 6 does not  
come “ON”, when trigger circuit closed, look for  
open connections in the 2 & 4 circuit and in leads  
290 and 291.  
P.C. bOARD TROUbLESHOOTING GUIDE  
CONTROL P.C. bOARD  
1. LED 1 indicates AC input voltage necessary to gen-  
erate the DC supply voltages is present. These volt-  
ages power the Control board circuitry. If LED 1 is  
not “ON” when machine POWER is “ON”, check  
leads 255, 256, X1, and X2 for broken connection.  
TRIGGERꢀCIRCUIT is closed by any of the following:  
• Wire feeder’s trigger is closed.  
• A jumper is placed across 2 & 4 on terminal strip  
T.S.2. or across pins C & D in 14 pin connector.  
• OUTPUT TERMINAL switch is in the “ON” position.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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E-13  
E-13  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
CONNECTING REMOTE OUTPUT  
CONTROL RHEOSTAT TO THE MACHINE  
CHECKING POWER ON/OFF SWITCH (S1)  
1. Turn off the machine input power ("  
o
"position).  
Extreme caution must be observed when installing or  
extending the wiring of a remote control. Improper  
connection of this unit can lead to loss of control  
and/or poor welding. Only the green lead can and  
should be grounded to the machine case. When  
extending the standard remote control, make sure the  
leads are the same and the splice is waterproof. Be  
very careful not to ground the cable when in use and  
don't let the lugs touch against the case.  
SW1 has 115 volts across it when the input power  
is connected.  
2. Isolate the switch to be tested by removing all co-  
nnecting leads.  
3. Check to make sure the switch is making open and  
closed connections with a V.O.M. meter. Put ohm  
meter on X1 scale. The meter should read zero  
resistance with switch " I " and infinite with switch  
CHECKING REMOTE OUTPUT CONTROL  
RHEOSTAT  
"
o
"
4. Put the ohmmeter on X1K scale and measure the  
resistance between the terminal and the case of the  
machine (touch a self-tapping screw). Reading  
should be infinite.  
Disconnect the remote output control and connect an  
ohmmeter across 75 and 76 and rotate the rheostat in  
the remote control. The resistance reading should go  
from zero to 10K ohms. Repeat with ohmmeter across  
77 and 76 with same results. Connect ohmmeter  
across 75 and 77. The reading should be 10K "10%  
ohms. A lower reading will indicate a shorted or par-  
tially shorted rheostat. A very high reading will indicate  
an open rheostat. In either of the last two cases,  
replace rheostat. Check cable for any physical dam-  
age.  
5. If either step (3) or step (4) fails, replace the switch.  
CHECKING OUTPUT CONTROL RHEO-  
STAT ON MACHINE (R1)  
1. Turn machine off ("  
o
" position).  
2. Remove the screws from the hinged control panel  
and open the panel.  
P.C. bOARD TROUbLESHOOTING GUIDE  
VRD P.C. bOARD  
3. Turn the LOCAL/REMOTE CONTROL switch to  
"REMOTE".  
1. LED’s 4 and 5 indicate power being supplied to the  
P.C. board from the 42 volt winding on the main  
transformer (T1), but only when the machine is in  
CC mode. If LED 4 and 5 are not “ON” while in CC  
mode, turn the machine off, check the wiring back  
to the 42V transformer winding and check the mode  
switch. If the LED’s are on when the machine is in  
CV mode then a wiring error exists. (For Codes  
11598, 11613 only)  
4. With an ohmmeter on X1K, connect it to lead 236  
and 237 on R1.  
5. Exercise caution to avoid damaging rheostat tabs.  
6. Rotate the OUTPUT voltage control rheostat. The  
resistance reading should be from around zero to  
10K ohms. Check the resistance reading between  
the two outer tabs on the rheostat (leads 236 and  
75). The reading must be 10K "10% ohms. No  
reading will indicate an open rheostat and a low  
reading will indicate a shorted or partially shorted  
rheostat; in either case, replace.  
2. With the power on, change mode switch from CV to  
CC. LED 2 must be ON for the initial 5 seconds,  
and then LED 3 should turn “ON”. LED 3 indicates  
that the machine is ready to weld. LED 3 also indi-  
cates when 48V has been exceeded by turning  
“OFF” until the power is cycled.  
3. When LED 3 is “ON”, LED 1 should then turn “ON”  
when the electrode touches the work.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
IDEALARC® DC-600 VRD  
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F-1  
F-1  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-2  
F-2  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-3  
F-3  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-4  
F-4  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-5  
F-5  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-6  
F-6  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-7  
F-7  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-8  
F-8  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-9  
F-9  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-10  
F-10  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-11  
F-11  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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F-12  
F-12  
DIAGRAMS  
IDEALARC® DC-600 VRD  
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Do not touch electrically live parts or  
electrode with skin or wet clothing.  
Insulate yourself from work and  
ground.  
Keep flammable materials away.  
Wear eye, ear and body protection.  
WARNING  
Spanish  
No toque las partes o los electrodos  
bajo carga con la piel o ropa moja-  
da.  
Mantenga el material combustible  
fuera del área de trabajo.  
Protéjase los ojos, los oídos y el  
cuerpo.  
AVISO DE  
PRECAUCION  
French  
Aislese del trabajo y de la tierra.  
Ne laissez ni la peau ni des vête-  
ments mouillés entrer en contact  
avec des pièces sous tension.  
Isolez-vous du travail et de la terre.  
Gardez à l’écart de tout matériel  
inflammable.  
Protégez vos yeux, vos oreilles et  
votre corps.  
ATTENTION  
German  
Berühren Sie keine stromführenden  
Teile oder Elektroden mit Ihrem  
Körper oder feuchter Kleidung!  
Isolieren Sie sich von den  
Entfernen Sie brennbarres Material!  
Tragen Sie Augen-, Ohren- und Kör-  
perschutz!  
WARNUNG  
Elektroden und dem Erdboden!  
Portuguese  
Não toque partes elétricas e electro-  
dos com a pele ou roupa molhada.  
Isole-se da peça e terra.  
Mantenha inflamáveis bem guarda-  
dos.  
Use proteção para a vista, ouvido e  
corpo.  
ATENÇÃO  
Japanese  
Chinese  
Korean  
Arabic  
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE  
CONSUMABLES TO BE USED AND FOLLOWYOUR EMPLOYER’S SAFETY PRACTICES.  
SE RECOMIENDA LEERY ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE  
ESTE EQUIPOY LOS CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU  
SUPERVISOR.  
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT  
ET LES PRODUITS A ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE  
EMPLOYEUR.  
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRO-  
DENEINSATZ DES HERSTELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS  
SIND EBENFALLS ZU BEACHTEN.  
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Keep your head out of fumes.  
Use ventilation or exhaust to  
remove fumes from breathing zone.  
Turn power off before servicing.  
Do not operate with panel open or  
guards off.  
WARNING  
Spanish  
Los humos fuera de la zona de res-  
piración.  
Mantenga la cabeza fuera de los  
humos. Utilice ventilación o  
aspiración para gases.  
Desconectar el cable de ali-  
mentación de poder de la máquina  
antes de iniciar cualquier servicio.  
No operar con panel abierto o  
guardas quitadas.  
AVISO DE  
PRECAUCION  
French  
Débranchez le courant avant l’entre-  
tien.  
N’opérez pas avec les panneaux  
ouverts ou avec les dispositifs de  
protection enlevés.  
Gardez la tête à l’écart des fumées.  
Utilisez un ventilateur ou un aspira-  
teur pour ôter les fumées des zones  
de travail.  
ATTENTION  
German  
Strom vor Wartungsarbeiten  
abschalten! (Netzstrom völlig öffnen;  
Maschine anhalten!)  
Anlage nie ohne Schutzgehäuse  
oder Innenschutzverkleidung in  
Betrieb setzen!  
Vermeiden Sie das Einatmen von  
Schweibrauch!  
Sorgen Sie für gute Be- und  
Entlüftung des Arbeitsplatzes!  
WARNUNG  
Portuguese  
Não opere com as tampas removidas.  
Desligue a corrente antes de fazer  
serviço.  
Mantenha-se afastado das partes  
moventes.  
Não opere com os paineis abertos  
ou guardas removidas.  
Mantenha seu rosto da fumaça.  
Use ventilação e exhaustão para  
remover fumo da zona respiratória.  
ATENÇÃO  
Não toque as partes elétricas nuas.  
Japanese  
Chinese  
Korean  
Arabic  
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES  
DE USO, E SIGA AS PRÁTICAS DE SEGURANÇA DO EMPREGADOR.  
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• 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 WEBꢀSITE: www.lincolnelectric.com  
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