The ESAB LUD 320 and LUD 450 welding rectifiers are transistorised machines designed for MMA (Manual Metal Arc), MIG/MAG (semi-automatic), TIG welding, and arc gouging. These power sources are fan cooled and have a thermal cut-out to prevent overheating. Various safety features are also included, such as protection against electric shock, fumes and gases, arc rays, and fire hazards.
The ESAB LUD 320 and LUD 450 welding rectifiers are transistorised machines designed for MMA (Manual Metal Arc), MIG/MAG (semi-automatic), TIG welding, and arc gouging. These power sources are fan cooled and have a thermal cut-out to prevent overheating. Various safety features are also included, such as protection against electric shock, fumes and gases, arc rays, and fire hazards.
Valid for Serial NO 839 XXX--XXXX0456 517 101 980925
LUD 320/450
320W/450W
101103105107109111102021110025108024042106023061104022041100020040060001
Bruksanvisning
Brugsanvisning
Bruksanvisning
Käyttöohjeet
Instruction manual
Betriebsanweisung
Manuel d’instructions
Gebruiksaanwijzing
Instrucciones de uso
Istruzioni per l’uso
Manual de instruções
Ïäçãßåò ÷ñÞóåùò
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Rätt till ändring av specifikationer utan avi sering förbehålles.
Ret til ændring af specifikationer uden varsel forbeholdes.
Rett til å endre spesifikasjoner uten varsel forbeholdes.
Oikeudet muutoksiin pidätetään.
Rights reserved to alter specifications without notice.
Änderungen vorbehal ten.
Sous réserve de modifications sans avis préalabl e.
Recht op wijzigingen zonder voorafgaande mededeling voorbehouden.
Reservado el derecho de cambiar las especifi caciones sin previo aviso.
Ci riserviamo il diritto di variare le specifiche senza preavviso.
Reservamo--nos o direito de alterar as especificações sem aviso prévio.
Äéáôçñåßôáé ôï äéêáßùìá ôñïðïðïßçóçò ðñïäéáãñáöþí ×ùñßò ðñïåéäïðïßçóç.
SVENSKA 3..............................................
DANSK 14................................................
NORSK 25................................................
SUOMI 36................................................
ENGLISH 47..............................................
DEUTSCH 58.............................................
FRANÇAIS 69.............................................
NEDERLANDS 80.........................................
ESPAÑOL 91..............................................
ITALIANO 102..............................................
PORTUGUÊS 113..........................................
ÅËËÇÍÉÊÁ 124.............................................
ENGLISH
TOCe
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1 DIRECTIVE 48........................................................
2SAFETY 48...........................................................
3 INTRODUCTION 49...................................................
3.1 SETTING CONTROL 49......................................................
3.2 TECHNICAL SPECIFICATION 320/320W 49....................................
3.3 TECHNICAL SPECIFICATION 450/450W 50....................................
4 INSTALLATION 51....................................................
4.1 MAINS SUPPLY 52...........................................................
4.2 Termination resistance 52.....................................................
4.3 CONNECTION INSTRUCTION 53.............................................
5 OPERATION 54.......................................................
6 MAINTENANCE 55....................................................
6.1 INSPECTION AND CLEANING 55.............................................
7 ORDERING OF SPARE PARTS 55......................................
8 ACCESSORIES 56....................................................
DIAGRAM 135............................................................
LIST OF COMPONENTS 137...............................................
SPARE PARTS LIST 139...................................................
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1 DIRECTIVE
DECLARATION OF CONFORMITY
Esab Welding Equipment AB, S--695 81 Laxå, Sweden, gives its unreserved guarantee that welding
power source LUD 320/450--320/450W from serial number 716 complies with standard EN 60974--1,
in accordance with the requirements of directive 73/23/ EEA and addendum 93/68/ EEA and stan-
dard EN 50199 in accordance with the requirements of directive 89/336/ EEA and addendum
93/68/ EEA.
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Paul Karlsson
Managing Director
Esab Welding Equipment AB
695 81 LAXÅ
SWEDEN Tel: + 46 584 81000 Fax: + 46 584 12336
Laxå 1997.06.05
2SAFETY
WARNING
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.
ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS. TAKE PRECAU-
TIONS WHEN WELDING. ASK FOR YOUR EMPLOYER’S SAFETY PRACTICES WHICH SHOULD BE
BASED ON MANUFACTURERS’ HAZARD DATA.
ELECTRIC SHOCK -- Can kill
S Install and earth the welding unit in accordance with applicable standards.
S Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
S Insulate yourself from earth and the workpiece.
S Ensure your working stance is safe.
FUMES AND GASES -- Can be dangerous to health
S Keep your head out of the fumes.
S Use ventilation, extraction at the arc, or both, to keep fumes and gases from your breathing zone and
the general area.
ARC RAYS -- Can injure eyes and burn skin.
S Protect your eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
S Protect bystanders with suitable screens or curtains.
FIRE HAZARD
S Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE -- Excessive noise can damage hearing
S Protect your ears. Use ear defenders or other hearing protection.
S Warn bystanders of the risk.
MALFUNCTION -- Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
INSTRUCTIONS
Straps must be used when lifting the power
source. The handle is solely intended for pul -
ling the power source.
GB
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3 INTRODUCTION
LUD 320 and LUD 450 are transistorised welding rectifiers intended for MMA (Manu-
al Metal Arc), MIG/MAG (semi--automatic) welding ,T IG welding and arc gouging.
LUD units are used in combination with a controller and wire feed unit
MEK 4C, MEK 44C, MEK 20C and MLC 30C.
The welding rectifiers are fan cooled, and fitted with a thermal cut--out to prevent
overheating.
The cut--out is reset automatically when the welding rectifier has cooled down.
3.1 SETTING CONTROL
All the settings are controlled by the PUA1 setting box.
For operating instructions see the programming manual 456 685--005.
3.2 TECHNICAL SPECIFICATION 320/320W
LUD 320/320 W LUD 320/320 W
Voltage 400V 3~50/60 Hz 230/400/500V 3~50Hz
208/230/460/475V 3~60 Hz
Permissible load at
100% duty cycle
60% duty cycle
270A / 30,8V
320A / 32,8V
270A / 30,8V
320A / 32,8V
Setting range
MIG/MAG 15A/15V(8V)--320A/30V 30A/15V(8V)--320A/30V
Setting range
MMA 16A/20V--320A/32,8V 10A/20V--320A/32,8V
Setting range
TIG 4A/10V--320A/22,7V 10A/10V--320A/22,7V
Open circuit voltage
MIG/MAG 65--80 V 65--80 V
Open circuit voltage
MMA/TIG 50--60 V 50--60 V
Open circuit power 520 W 520 W
Efficiency,
at max current MIG/MAG 82%
MMA 84,5%
TIG 82%
MIG/MAG 82%
MMA 84,5%
TIG 84,5%
Power factor,
at max current MIG/MAG 0,85
MMA 0,85
TIG 0,80
MIG/MAG 0,85
MMA 0,85
TIG 0,80
Enclosure class IP 23 IP 23
Weight kg 96/110 143/157
Dimensions , lxwxh 910x642x835 910x642x835
Application classification
These welding rectifier conform to the requirements of IEC 974--1.
GB
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3.3 TECHNICAL SPECIFICATION 450/450W
LUD 450/450 W LUD 450/450 W
Voltage 400V 3~50/60 Hz 230/400/500V 3~50Hz
208/230/460/475V 3~60 Hz
Permissible load at
100% duty cycle 360A / 34,4V 360 / 34,4V
60% duty cycle 425A / 37V 425A / 37V
45% duty cycle 450A / 38V 450A / 38V
Setting range
MIG/MAG 15A/15V (8V) --450A/36,5V 30A/15V (8V)--450A/36,5V
Setting range
MMA 16A / 20V--450A / 38V 10A / 20V--450A / 38V
Setting range
TIG 4A/10V--450A/28V 10A/10V--450A/28V
Open circuit voltage
MIG/MAG 65 -- 80 V 65 -- 80 V
Open circuit voltage
MMA /TIG 50 -- 60 V 50 -- 60 V
Open circuit power 520 W 520 W
Efficiency,
at max current MIG/MAG 82%
MMA 83%
TIG 83%
MIG/MAG 82%
MMA 83%
TIG 83%
Power factor,
at max current MIG/MAG 0,92
MMA, 0,92
TIG 0,90
MIG/MAG 0,92
MMA 0,92
TIG 0,90
Enclosure class IP 23 IP 23
Weight kg 96/110 143/157
Dimensions , lxwxh 910x642x835 910x642x835
Application classification
These welding rectifier conform to the requirements of IEC 974--1.
The symbol indicates that this welding power source is designed for use in areas
where there is an increased electrical hazard.
The IP code indicates the enclosure class, i.e. the degree of protection against
penetration by solid objects and water.
Equipment marked IP 23 is designed for in-- and outdoor use.
GB
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4 INSTALLATION
WARNING
This product is intended for industrial use. In a domestic environment this prod-
uct may cause radio interference. It is the users responsibility to take adequate
precautions.
IMPORTANT
S Installation must be carried out by a qualified electrician.
S Place the welding power source in a suitable place and make sure the welding
rectifier is not covered or set--up so that cooling is prevented.
S Make sure the welding rectifier is connected to the correct mains voltage.
Earthaccordingtoapplicabledirectives.
S Connect the power supply lead using the appropriate fuse in conformance with
local regulations.
Power supply lead complies to Swedish electrical regulations.
GB
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4.1 MAINS SUPPLY
LUD 320 3~50 Hz 3~50 Hz 3~50 Hz 3~60 Hz 3~60 Hz 3~60 Hz 3~60 Hz
Voltage V 230 400 500 208 230 460 475
Current A 100%
60%
27
37
16
21
13
15
30
38
27
34,5
13,5
17
13
16,5
Mains lead rating 4x10 4x4 4x4 4x10 4x10 4x4 4x4
Fuse, slow A 25 16 16 35 25 16 16
LUD 450
3~50 Hz 3~50 Hz 3~50 Hz 3~60 Hz 3~60 Hz 3~60 Hz 3~60 Hz
Voltage V 230 400 500 208 230 460 475
Current A 100% 40 24,5 18,5 45 41 20 19,5
60% 51 30,5 23 57,5 51,5 25 24,5
45% 55,5 34 25 62 56,5 27,5 26,5
Mains lead rating 4x10 4x4 4x4 4x10 4x10 4x4 4x4
Fuse, slow A 50 20 20 50 50 20 20
4.2 Termination resistance
The termination r esistance must be connected to the ends of the CAN bus to prevent
communication problems.
The controller has a built--in terminator, but the power source and wire feed unit do
not.
The terminator should be fitted as follows depending on how the units are
connected:
1. Controller connected to wire feed unit.
The termination r esistance must be con-
nected to the rear of the power source.
(Already connected this way on
delivery).
2. Controller connected to power source.
The termination resistance
must be connected to the front
of the wire feed unit.
GB
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4.3 CONNECTION INSTRUCTION
400 V 3 50/60 Hz
208 V 60Hz, 230 V 50/60 Hz
LUD 320/320W 4x10 mm@
LUD 450/450W 4x10 mm
@
GB
H
E
N
O
P
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5OPERATION
CAUTION!
When pulse welding make sure that the return cable (max. 8 m) and the connecting
cable (max. 8 m) between the power source and wire feed unit are not coiled up.
B
A
C
D
GF
J
IF G
J
KF M L
G
TIG--Central connector
TIG--,OKC--connectorMMA, MIG/MAG
A -- Power on/off
B -- Cooling unit on/off (LUD 320W/450W)
C -- Power on light
D -- Thermal cut--out warning light, lights up in case of overheating
E -- Welding terminal, + polarity
F -- Welding terminal, -- polarity
G -- Welding terminal, + polarity
H -- Automatic fuse 42 V AC circuit
I -- Central connector TIG torch, -- polarity HF
J -- Water connection, TIG torch
K -- OKC connector T IG torch, -- polarity HF
L -- Connection for TIG torch trigger switch
M -- Gas connection for TIG torch
N -- Gas nipple (connection to gas bottle)
O -- Termination resistance
P -- Water connection, wire feed unit
GB
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6 MAINTENANCE
NOTE!
All warranty undertakings given by the supplier cease to apply if the customer
attempts to rectify any faults on the machine during the warranty period.
6.1 INSPECTION AND CLEANING
LUD 320/450 normally requires no maintenance.
Blow the inside o f the welding power source clean once a year using dry
compressed air at reduced pressure.
If the welding power source is set up in a dusty or dirty environment it should be
cleaned more regularly.
Topping up coolant
Mix: 50 % water 50 % glycol
ba11k
y
la
7 ORDERING OF SPARE PARTS
Spare parts can be ordered through your nearest ESAB representative. See the last
page in this publication. When ordering, please state the machine model, the serial
number and the name and number of the spare parts as shown in the list of spare
parts. This will simplify dispatch and help ensure correct delivery.
GB
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8 ACCESSORIES
Fig. Ord.no. Designation 320/450 320W/450W
1 456 400--880 Wire feed unit MEK4 C x
456 400--881 Wire feed unit MEK4 CW x
456 800--880 Wire feed unit MEK44 C x
456 800--881 Wire feed unit MEK44 CW x
456 980--880 Wire feed unit MEK20 C x
456 980--881 Wire feed unit MEK20 CW x
457 040--880 Wire feed unit MLC30 C x
2 156 654--893 Guide pin x x
3 456 528--880 Connection kit 1,7 m x
456 528--881 Connection kit 8 m x
456 528--882 Connection kit 16 m x
456 528--883 Connection kit 25 m x
456 528--884 Connection kit 35 m x
456 528--885 Connection kit 1,7 m W x
456 528--886 Connection kit 8 m W x
456 528--887 Connection kit 16 m W x
456 528--888 Connection kit 25 m W x
456 528--889 Connection kit 35 m W x
4 456 290--881 Setting control,Eng.Germ.Fre.It. x x
456 290--882 Setting control,Eng.Swed.Fin. Dan. x x
456 290--883 Setting control,Eng.Hol. Spa. Por. x x
456 290--884 Setting control,Eng.Ung. pol. x x
5 456 280--881 Control cable 5 m, PUA 1
456 280--882 Control cable 10 m, PUA 1
6 469 792--881 Counterbalance arm MEK4 x x
7 456 693--880 Counterbalance arm MEK4 x x
8 467 816--881 Counterbalance arm MEK44/MLC30 x x
9 156 746--880 Mast x x
456 855--880 Flow monitor x
457 410--880
Weldoc WMS 4000
x x
457 410--881
SPS 4000, software kit
x x
457 415--880
PC interface LUD
x x
457 072--881
Opto cable WMS 4000
x x
12 457 073--880
Connection kit 2 Wire feed units
x x
13 457 348--881 Holder x x
156 681--883 Swivel unit MEK44/MLC30 x x
332 650--880 Carriage MEK44/MLC30 x x
469 786--880 Carriage MEK 4C x x
156 730--880
Suspension unit MEK44C/MLC30C
x x
469 789--880
Suspension unit MEK 4C
x x
466 801--881 Aristo control 5 program x x
466 801--880 Aristo control synergic x x
466 515--881 Aristo control 5 program x x
466 515--880 Aristo control synergic x x
14 457 221--881 Carriage for 2 gas cylinders x x
15 457 950--880 Stabiliser kit x x
16 457 043--880 Adapter kit ,Setting control x x
GB
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4,5
2
1
3
6
9
7,8
12
13
14
15
16
There is a risk of tipping if the wire feed cabinet is fitted with a counterbalance arm.
Secure the equipment, especially if used on an uneven or sloping surface.
Limit the angle of rotation of the wire feed cabinet using the straps supplied.
When moving the equipment, do NOT pull on the torch.
WARNING!
GB
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The ESAB LUD 320 and LUD 450 welding rectifiers are transistorised machines designed for MMA (Manual Metal Arc), MIG/MAG (semi-automatic), TIG welding, and arc gouging. These power sources are fan cooled and have a thermal cut-out to prevent overheating. Various safety features are also included, such as protection against electric shock, fumes and gases, arc rays, and fire hazards.
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