LAF 1001 /
LAF 1001M
Instruction manual
0449 503 101 GB 20230412
Valid for: serial no. 536-xxx-xxxx
EU DECLARATION OF CONFORMITY
According to:
The Low Voltage Directive 2014/35/EU; entering into force 20 April 2016
The EMC Directive 2014/30/EU; entering into force 20 April 2016
The RoHS Directive 2011/65/EU; entering into force 2 January 2013
Type of equipment
Arc welding power source
Type designation
LAF 1001 / LAF 1001M from serial no. 536-xxx-xxxx
Brand name or trademark
LSAB
Manufacturer or his authorised representative established within the EEA
ESAB AB
Lindholmsallen 9, Box 8004, SE-402 77 Goteborg, Sweden
Phone: +46 31 50 90 00, www.esab.com
The following EN standards and regulations in force within the EEA has been used in the design:
| EN IEC 60974-1:2018/A1.2019 | Arc Welding Equipment – Part 1: Welding power sources |
| EN 60974-10:2014 | Arc Welding Equipment – Part 10: Electromagnetic Compatibility (EMC) requirements |
Additional Information: Restrictive use, Class A equipment, intended for use in location other than residential
By signing this document, the undersigned declares as manufacturer, or the manufacturer’s authorised representative established within the EEA, that the equipment in question complies with the safety and environment requirements stated above.
Date Signature Position
Gothenburg 
2023-03-23 Peter Kjallstrom Director Welding Automation
2023
Rights reserved to alter specifications without notice.
1 SAFETY
1.1 Meaning of symbols
As used throughout this manual: Means Attention! Be Alert!
DANGER!
Means immediate hazards which, if not avoided, will result in immediate, serious personal injury or loss of life.
WARNING!
Means potential hazards which could result in personal injury or loss of life.
CAUTION!
Means hazards which could result in minor personal injury.
WARNING!
Before use, read and understand the instruction manual and follow all labels, employer’s safety practices and Safety Data Sheets (SDSs).
1.2 Safety precautions
Users of ESAB equipment have the ultimate responsibility for ensuring that anyone who works on or near the equipment observes all the relevant safety precautions. Safety precautions must meet the requirements that apply to this type of equipment. The following recommendations should be observed in addition to the standard regulations that apply to the workplace.
All work must be carried out by trained personnel well-acquainted with the operation of the equipment. Incorrect operation of the equipment may lead to hazardous situations which can result in injury to the operator and damage to the equipment.
- Anyone who uses the equipment must be familiar with:
○ its operation
○ location of emergency stops
○ its function
○ relevant safety precautions
○ welding and cutting or other applicable operation of the equipment - The operator must ensure that:
○ no unauthorised person is stationed within the working area of the equipment when it is started up
○ no-one is unprotected when the arc is struck or work is started with the equipment - The workplace must:
○ be suitable for the purpose
○ be free from drafts - Personal safety equipment:
○ Always wear recommended personal safety equipment, such as safety glasses, flame-proof clothing, safety gloves
○ Do not wear loose-fitting items, such as scarves, bracelets, rings, etc., which could become trapped or cause burns - General precautions:
○ Make sure the return cable is connected securely
○ Work on high voltage equipment may only be carried out by a qualified electrician
○ Appropriate fire extinguishing equipment must be clearly marked and close at hand
○ Lubrication and maintenance must not be carried out on the equipment during operation
WARNING!
Arc welding and cutting can be injurious to yourself and others. Take precautions when welding and cutting.
ELECTRIC SHOCK – Can kill
- Install and ground the unit in accordance with instruction manual.
- Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
- Insulate yourself from work and ground.
- Ensure your working position is safe
ELECTRIC AND MAGNETIC FIELDS – Can be dangerous to health
- Welders having pacemakers should consult their physician before welding.
EMF may interfere with some pacemakers. - Exposure to EMF may have other health effects which are unknown.
- Welders should use the following procedures to minimize exposure to EMF:
- Route the electrode and work cables together on the same side of your body. Secure them with tape when possible. Do not place your body between the torch and work cables. Never coil the torch or work cable around your body. Keep welding power source and cables as far away from your body as possible.
- Connect the work cable to the workpiece as close as possible to the area being welded.
FUMES AND GASES – Can be dangerous to health
- Keep your head out of the fumes.
- Use ventilation, extraction at the arc, or both, to take fumes and gases away from your breathing zone and the general area.
ARC RAYS – Can injure eyes and burn skin
- Protect your eyes and body. Use the correct welding screen and filter lens and wear protective clothing.
- Protect bystanders with suitable screens or curtains.
NOISE – Excessive noise can damage hearing
Protect your ears. Use earmuffs or other hearing protection.
MOVING PARTS – Can cause injuries
- Keep all doors, panels and covers closed and securely in place. Have only qualified people remove covers for maintenance and troubleshooting as necessary. Reinstall panels or covers and close doors when service is finished and before starting engine.
- Stop engine before installing or connecting unit.
- Keep hands, hair, loose clothing and tools away from moving parts.
FIRE HAZARD
- Sparks (spatter) can cause fire. Make sure that there are no inflammable materials nearby.
- Do not use on closed containers.
MALFUNCTION – Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
CAUTION!
This product is solely intended for arc welding.
WARNING!
Do not use the power source for thawing frozen pipes.
CAUTION!
Class A equipment is not intended for use in residential locations where the electrical power is provided by the public low-voltage supply system. There may be potential difficulties in ensuring electromagnetic compatibility of class A equipment in those locations, due to conducted as well as radiated disturbances.
NOTE!
Dispose of electronic equipment at the recycling facility!
In observance of European Directive 2012/19/EC on Waste Electrical and Electronic Equipment and its implementation in accordance with national law, electrical and/or electronic equipment that has reached the end of its life must be disposed of at a recycling facility.
As the person responsible for the equipment, it is your responsibility to obtain information on approved collection stations.
For further information contact the nearest ESAB dealer.
ESAB has an assortment of welding accessories and personal protection equipment for purchase. For ordering information contact your local ESAB dealer or visit us on our website.
2 INTRODUCTION
LAF 1001/ LAF 1001M are remote-controlled 3-phase welding power sources intended for highly productive mechanised gas metal arc welding (MIG/MAG) or submerged arc welding (SAW).
The welding power sources are fan-cooled and are monitored by a thermal cutout against overload. When the thermal cutout is deployed the yellow lamp on the front panel illuminates automatically. The reset is carried out automatically when the temperature has decreased to a permitted level.
3 TECHNICAL DATA
| LAF 1001 | LAF 1001M | |
| Mains voltage | 380/400/415/500 V, 3~ 50 Hz 440/550 V, 3~ 60 Hz |
230/380/400/415/500 V, 3~ 50 Hz 230/440/550 V, 3~ 60 Hz |
| Zmax | 0.04 Ohm | 0.04 Ohm |
| Primary current | Imax 84 A | Imax 138 A |
| Values of the conventional load: | ||
| 100% duty cycle | 800 A/44 V | 800 A/44 V |
| 60% duty cycle | 1000 A/44 V | 1000 A/44 V |
| Setting range SAW | 100-1000 A/24-44 V | 100-1000 A/24-44 V |
| Ssc min | 4.8 MVA | 4.8 MVA |
| No-load voltage | 53 V | 56 V |
| No-load power | 180 W | 178 W |
| Efficiency at maximum current | 90% | 86% |
| Power factor at maximum current | 0.95 | 0.96 |
| Apparent power I2 at maximum current | 51.6 kVA | 52.9 kVA |
| Active power I2 at maximum current | 48.9 kW | 51.0 kW |
| Operating temperature | -10 to +40 °C (+14 to +104 °F) | -10 to +40 °C (+14 to +104 °F) |
| Weight | 330 kg (727.5 lb) | 330 kg (727.5 lb) |
| Dimensions L × W × H | 646 × 552 × 1090 mm (25.4 × 21.7 × 42.9 in.) |
646 × 552 × 1090 mm (25.4 × 21.7 × 42.9 in.) |
| Isolation class transformer | H | H |
| Enclosure class | IP23 | IP23 |
| Application class |  |
|
Enclosure class
The IP code indicates the enclosure class, i.e. the degree of protection against penetration by solid objects or water.
Equipment marked IP23 is intended for indoor and outdoor use.
Application class
The symbol indicates that the power source is designed for use in areas with increased electrical hazard.
4 INSTALLATION
The installation must be carried out by a professional.
NOTE!
Mains supply requirements
This equipment complies with IEC 61000-3-12 provided that the short-circuit power is greater than or equal to Sscmin at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power greater than or equal to Sscmin. Refer to the technical data in the TECHNICAL DATA chapter.
4.1 Location
WARNING!
Secure the equipment – particularly if the ground is uneven or sloping.
- Place the welding power source on a level foundation.
- Make sure there is nothing to prevent the cooling.
Lifting instructions
4.2 Connections
- On delivery the welding power source is connected for 400 V.
- For other supply voltage:
Remove the left side plate.
Perform the switchings on the main and control transformer in accordance with the section “Connection instruction”. - Select the mains cable with the correct cable area and fuse the cable with the correct fuse in accordance with local regulations (see the “Main connection” table below).
- Remove the front plates (x 2).
- Connect the ground cable to the screw marked
. - Tighten the cable clamp (1).
- Connect the mains cables to the main connection terminals L1, L2 and L3 (5).
- Connect the control cable between the welding power source and the control box to the 28-pin connector (2) on the inside of the welding power source.
- Connect the 1-pin measuring cable (4) for measuring the arc voltage to the return cable/welding head.
- Connect a suitable welding and return cable in the connectors (3) marked + and – on the front of the welding power source.
- Fit the side/ front plates.
Mains connection
| LAF 1001 | 50 Hz | 60 Hz | ||||
| Voltage (V) | 380 | 400 | 415 | 500 | 440 | 550 |
| Phase current I1eff (A) | 67 | 64 | 64 | 52 | 64 | 52 |
| Cable area (mm²) | 4 × 16 | 4 × 16 | 4 × 16 | 4 × 16 | 4 × 16 | 4 × 16 |
| Fuse, slow (A) | 80 | 63 | 63 | 63 | 63 | 63 |
| Miniature circuit breaker (A) | 80 | 80 | 80 | 63 | 80 | 63 |
| LAF 1001M | 50 Hz | 60 Hz | ||||||
| Voltage (V) | 230 | 380 | 400 | 415 | 500 | 230 | 440 | 550 |
| Phase current I1eff (A) | 108 | 67 | 64 | 64 | 51 | 108 | 64 | 51 |
| Cable area (mm²) | 4 × 50 | 4 × 16 | 4 × 16 | 4 × 16 | 4 × 16 | 4 × 50 | 4 × 16 | 4 × 16 |
| Fuse, slow (A) | 125 | 80 | 63 | 63 | 63 | 125 | 63 | 63 |
| Miniature circuit breaker (A) | 125 | 80 | 80 | 80 | 63 | 125 | 80 | 63 |
NOTE!
The mains cable areas and fuse sizes as shown above are in accordance with Swedish regulations. For other regions, supply cables must be suitable for the application and meet local and national regulations.
5 OPERATION
General safety regulations for handling the equipment can be found in the “SAFETY” chapter of this manual. Read it through before you start using the equipment!
WARNING!
Assure that the side panels are closed during operation.
NOTE!
The power source must be set to analogue mode to use the PEI control unit.
5.1 Controls
The front panel contains:
| 1. |  |
Main circuit-breaker for switching the mains voltage and the fan on and off in the welding power source.
|
| 2. |  |
|
| 3. |  |
Indicator lamp for overheating (yellow)
|
| 4. |  |
Pushbutton resetting the automatic fuse FU2 for 42 V supply voltage. |
6 MAINTENANCE
CAUTION!
All warranty undertakings from the supplier cease to apply if the customer attempts any work to rectify any faults in the product during the warranty period.
6.1 Cleaning
6.1.1 Welding power source
WARNING!
Blocked air inlets or outlets will lead to overheating.
- Clean the welding power source as necessary.
Dry compressed air is recommended for the purpose.
6.1.2 Contactor
WARNING!
Never use compressed air to clean the contactor without first taking it apart completely.
NOTE!
To ensure the reliable operation of the contactor, the magnetic parts must be kept clean.
If the contactor has to be cleaned it must be taken apart, and all the pieces be cleaned.
Alternatively, the contactor can be replaced.
7 ORDERING SPARE PARTS
CAUTION!
Repair and electrical work should be performed by an authorised ESAB service technician. Use only ESAB original spare and wear parts.
LAF 1001 / LAF 1001M is designed and tested in accordance with the international and European standards 60974-1 and 60974-10. It is the obligation of the service unit which has carried out the service or repair work to make sure that the product still conforms to the said standard.
Spare parts and wear parts can be ordered through your nearest ESAB dealer, see esab.com. When ordering, please state product type, serial number, designation and spare part number in accordance with the spare parts list. This facilitates dispatch and ensures correct delivery.
DIAGRAM
CONNECTION INSTRUCTION
| CONNECTIONS FOR DIFFERENT SUPPLY VOLTAGES. | |
| TC1 SEK. 42V | MAIN TRANSFORMER XT2 |
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| 0456 497-001 | |
| CONNECTIONS FOR DIFFERENT SUPPLY VOLTAGES. | |
| TC1 SEK. 42V | MAIN TRANSFORMER XT2 |
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| 0458 012-001 | |
ORDERING NUMBERS
| Ordering no. | Denomination | Type |
| 0460 513 880 | Welding power source | LAF 1001 |
| 0460 513 881 | Welding power source | LAF 1001M |
| 0459 839 057 | Spare parts list | LAF 1001 / LAF 1001M |
Technical documentation is available on the Internet at: www.esab.com
0449 503 101 ESAB AB 2023
A WORLD OF PRODUCTS AND SOLUTIONS.
For contact information visit esab.com
ESAB AB, Lindholmsallén 9, Box 8004, 402 77 Gothenburg, Sweden, Phone +46 (0) 31 50 90 00
Documents / Resources
 |
ESAB 631 Automated Sub Arc Laf [pdf] Instruction Manual 631, 1001, 1251, 1601, 631 Automated Sub Arc Laf, 631, Automated Sub Arc Laf, Sub Arc Laf, Arc Laf, Laf |
