Sel Genesis 1700 AC/DC Operating instructions

Genesis 1700 AC/DC
Genesis 2200 AC/DC
MANUALE DI RIPARAZIONE
REPAIR MANUAL

Cod. 92.08.067
Data/Date 17/11/11
Rev.
SELCO s.r.l.
Via Palladio, 19
35019 ONARA DI TOMBOLO (PD)
TEL. [phone]
FAX. [phone]
email: [email protected]
Come contattare l’Assistenza Tecnica Selco/ How to contact Service Department:
SELCO s.r.l
Service Department
c/o SELCO 2
Via Macello, 61
35010 CITTADELLA (Padova) Italy
Tel. [phone]
Fax. [phone]
email: [email protected]
Prima di iniziare qualsiasi operazione siate sicuri di aver ben letto e compreso questo manuale. Non apportate modifiche e non ese-
guite manutenzioni non descritte. Per ogni dubbio o problema circa l’utilizzo della macchina, anche se qui non descritto, consultare
personale qualificato.
La SELCO s.r.l. si riserva il diritto di apportare modifiche in qualsiasi momento e senza alcun preavviso.
Quanto esposto è di vitale importanza e pertanto necessario affinchè le garanzie possano operare.
Nel caso l’operatore non si attenesse a quanto descritto, il costruttore declina ogni responsabilità.
I diritti di traduzione, di riproduzione e di adattamento, totale o parziale e con qualsiasi mezzo (com-
presi le copie fotostatiche, i film ed i microfilm) sono riservati e vietati senza l’autorizzazione scritta
della SELCO s.r.l.
Before performing any operation on the machine, make sure that you have thoroughly read and understood the contents of this
booklet. Do not perform modifications or maintenance operations which are not prescribed.
Do consult qualified personnel for any doubt or problem concerning the use of the machine, even if not described herein.
SELCO s.r.l. reserves the right to modify this booklet at any time without notice.
The directions provided herewith are of vital importance and therefore necessary to ensure the warranties.
The manufacturer accepts no liability in case of misuse or non-application of the directions by the users.
All rights of translation and total or partial reproduction by any means whatsoever (including pho-
tocopy, film, and microfilm) are reserved and reproduction is prohibited without the explicit written
consent of SELCO s.r.l.
ITALIANO ................................................................................................................................................................................3
ENGLISH..............................................................................................................................................................................113
17)Targa dati, Rating plate..................................................................................................................................................221
18) Significato targa dati del generatore, Meaning of power source rating plate..............................................................222
19) Schemi elettrici e di collegamento, Wiring diagrams and connection ........................................................................223
20) Connettori, Connectors.................................................................................................................................................228
21)Lista ricambi, Spare parts list........................................................................................................................................230

113
ENGLISH
INDEX
SYMBOLS
Imminent danger of serious body harm and dangerous behaviours that may lead to serious body harm
Important advice to be followed in order to avoid minor injuries or damage to property
Technical notes to facilitate operations
1 WARNING ...........................................................114
1.1 Work environment.......................................114
1.2 User's and other persons' protection.............114
1.3 Protection against fumes and gases ..............115
1.4 Fire/explosion prevention.............................115
1.5 Prevention when using gas cylinders ............115
1.6 Protection from electrical shock...................115
1.7 Electromagnetic fields & interferences..........116
1.8 IP Protection rating ......................................116
2 INSTALLATION.....................................................117
2.1 Lifting, transport & unloading ......................117
2.2 Positioning of the equipment .......................117
2.3 Connection..................................................117
2.4 Installation ..................................................117
3 SYSTEM PRESENTATION......................................118
3.1 General........................................................118
3.2 FP216 Front control panel ...........................118
3.3 Starting Screen.............................................118
3.4 Main Screen ................................................119
3.5 Set up..........................................................120
3.6 Programs screen...........................................122
3.7 Interface personalisation ..............................124
3.8 Lock/unlock .................................................124
3.9 External controls management .....................124
3.2 FP279 front control panel............................125
3.3 Main Screen ................................................125
3.4 Set up..........................................................126
3.5 Programs screen...........................................129
3.6 Interface personalisation ..............................130
3.7 Interface personalisation ..............................131
3.8 Lock/unlock .................................................131
3.9 External controls management .....................132
3.10 Guard limits...............................................132
3.11 Alarms screen ............................................133
3.12 Rear panel ................................................134
3.13 Sockets panel ............................................134
4 ACCESSORIES ......................................................134
4.1 General........................................................134
4.2 RC 100 remote control................................134
4.3 RC 120 pedal remote control unit
for TIG welding..................................................134
4.4 RC 180 remote control................................134
4.5 RC 200 remote control................................135
4.6 ST... series torches........................................135
4.7 ST...U/D series torches .................................135
4.8 ST...DIGITIG series torches...........................135
4.8.1 General.....................................................135
5 MAINTENANCE....................................................135
6 TROUBLESHOOTING..........................................135
7) PURSPOSE OF THE MANUAL.............................138
8) WARNINGS, PRECAUTIONS AND......................139
GENERAL NOTICES FOR PERFORMING REPAIRS...139
9) INSTRUMENTS AND CONVENTIONS FOR ........140
PERFORMING DIAGNOSIS AND REPAIR................140
9.1) Instruments for basic diagnosis....................140
9.2) Repair tools ................................................140
9.3) Conventions................................................140
9.4) Static load...................................................141
10) DESCRIPTION OF THE BLOCK DIAGRAM .......142
10.1) Input filter.................................................143
10.2) PFC rectifier..............................................144
10.3) Inverter stage ............................................145
10.4) Output stage.............................................146
10.5) Switching power supply............................147
10.6) WU cooling group ....................................148
11) START-UP INDICATION ...................................149
11.1) External diagnostic indications .................149
11.2) Mechanical inidication..............................151
11.2.1 Panels identification................................151
11.2.2 Opening instruction................................152
11.3) Elements location and description section.153
11.3.1 Left view.................................................153
11.3.2 Right view...............................................154
12) DESCRIPTION, TESTING AND REPLACEMENT
OF THE ELECTRONIC BOARDS..............................155
12.1) Input filter pcb ref. 15.14.443...................156
12.2) Power inverter-pfc pcb ref. 15.18.035
(schede 15.14.422 e 15.14.423)........................160
12.3) Genesis 1700-2200 AC/DC
secondary power module and diodes ................175
12.4) Thermic caps inverter side ........................177
12.5) Thermic caps secondary side ....................179
12.6) Switching power supply pcb ref. 15.18.034
(15.14.42901+15.14.439).................................181
12.7) Digital card pcb ref. 15.14.415 ................187
12.8) Analog signal pcb ref. 15.14.419...............192
12.9) Superimposition pcb ref. 15.14.435..........194
12.10) H.F. Generator pcb ref. 15.14.430 ..........196
12.11) Output module AC-DC driver pcb
ref. 15.14.434 ..................................................199
12.12) Control panel pcb
ref. 15.14.343 & 15.14.342 ..............................201
12.13) Control panel LCD 3.5” pcb
ref. 15.14.517 (spare order ref. 15.22.273)........202
12.14) Bus pcb ref. 15.14.431 ...........................204
12.15) Output filter pcb ref. 15.14.444..............209
13) CALIBRATIONS .................................................212
13.1) Offset calibration
(only for unit with FP 15.22.279) ......................212
13.2) Current calibration
(to be done after 704 calibration).......................212
14) ALARMS TROUBLESHOOTING ......................213
14.1) Guard limits code .....................................216
15) ADVANCED SET-UP (COD. 358 MENU' SERV)..217
15.1) List of set up parameters (MMA) ...............217
15.2) List of set up parameters (TIG) ..................218
15.3) “INFO” screen..........................................219
16) TECHNICAL SPECIFICATIONS ..........................220

114
USE AND ROUTINE MAINTENANCE OF POWER SOURCES AND ACCESSORIES, TECHNICAL DATES
Use and routine maintenance (excerpt from the "Instructions for use" manual provided with each power source).
1 WARNING
Before performing any operation on the machine,
make sure that you have thoroughly read and
understood the contents of this booklet.
Do not perform modifications or maintenance
operations which are not prescribed.
The manufacturer cannot be held responsible for damages to
persons or property caused by misuse or non-application of the
contents of this booklet by the user.
Please consult qualified personnel if you have any
doubts or difficulties in using the equipment.
1.1 Work environment
• All equipment shall be used exclusively for the operations for
which it was designed, in the ways and ranges stated on the
rating plate and/or in this booklet, according to the national
and international directives regarding safety. Other uses than
the one expressly declared by the manufacturer shall be con-
sidered totally inappropriate and dangerous and in this case
the manufacturer disclaims all responsibility.
• This equipment shall be used for professional applications
only, in industrial environments.
The manufacturer shall not be held responsible for any dam-
ages caused by the use of the equipment in domestic environ-
ments.
• The equipment must be used in environments with a tem-
perature between -10°C and +40°C (between +14°F and
+104°F).
The equipment must be transported and stored in envi-
ronments with a temperature between -25°C and +55°C
(between -13°F and 131°F).
• The equipment must be used in environments free from dust,
acid, gas or any other corrosive substances.
• The equipment shall not be used in environments with a rela-
tive humidity higher than 50% at 40°C (104°F).
The equipment shall not be used in environments with a rela-
tive humidity higher than 90% at 20°C (68°F).
• The system must not be used at an higher altitude than 2,000
metres (6,500 feet) above sea level.
Do not use this machine to defrost pipes.
Do not use this equipment to charge batteries and/
or accumulators.
Do not use this equipment to jump-start engines.
1.2 User's and other persons' protection
The welding process is a noxious source of radia-
tion, noise, heat and gas emissions.
Wear protective clothing to protect your skin from
the arc rays, sparks or incandescent metal.
Clothes must cover the whole body and must be:
- intact and in good conditions
- fireproof
- insulating and dry
- well-fitting and without cuffs or turn-ups
Always use regulation shoes that are strong and
ensure insulation from water.
Always use regulation gloves ensuring electrical and
thermal insulation.
Position a fire-retardant shield to protect the sur-
rounding area from rays, sparks and incandescent
slags.
Advise any person in the area not to stare at the arc
or at the incandescent metal and to get an adequate
protection.
Wear masks with side face guards and a suitable
protection filter (at least NR10 or above) for the
eyes.
Always wear safety goggles with side guards, espe-
cially during the manual or mechanical removal of
welding slag.
Do not wear contact lenses!.
Use headphones if dangerous noise levels are
reached during the welding.
lf the noise level exceeds the limits prescribed by
law, delimit the work area and make sure that any-
one getting near it is protected with headphones or
earphones.
• The systems must not undergo any kind of modification.
• Always keep the side covers closed while welding.
Avoid touching items that have just been welded:
the heat could cause serious burning or scorching.
• Follow all the precautions described above also in all opera-
tions carried out after welding since slag may detach from the
items while they are cooling off.
• Check that the torch is cold before working on or maintaining it.
Ensure the cooling unit is switched off before dis-
connecting the pipes of the cooling liquid. The hot
liquid coming out of the pipes might cause burning
or scorching.
Keep a first aid kit ready for use.
Do not underestimate any burning or injury.

115
Before leaving work, make the area safe, in order to
avoid accidental damage to people or property.
1.3 Protection against fumes and gases
• Fumes, gases and powders produced during the welding proc-
ess can be noxious for your health.
Under certain circumstances, the fumes caused by welding
can cause cancer or harm the foetus of pregnant women.
• Keep your head away from any welding gas and fumes.
• Provide proper ventilation, either natural or forced, in the
work area.
• In case of poor ventilation, use masks and breathing apparatus.
• In case of welding in extremely small places the work should
be supervised by a colleague standing nearby outside.
• Do not use oxygen for ventilation.
• Ensure that the fumes extractor is working by regularly check-
ing the quantity of harmful exhaust gases versus the values
stated in the safety regulations.
• The quantity and the danger level of the fumes depends on
the parent metal used, the filler metal and on any substances
used to clean and degrease the pieces to be welded. Follow
the manufacturer's instructions together with the instructions
given in the technical sheets.
• Do not perform welding operations near degreasing or paint-
ing stations.
Position gas cylinders outdoors or in places with good ventila-
tion.
1.4 Fire/explosion prevention
• The welding process may cause fires and/or explosions.
• Clear the work area and the surrounding area from any flam-
mable or combustible materials or objects.
Flammable materials must be at least 11 metres (35 feet) from
the welding area or they must be suitably protected.
Sparks and incandescent particles might easily be sprayed
quite far and reach the surrounding areas even through
minute openings. Pay particular attention to keep people and
property safe.
• Do not perform welding operations on or near containers
under pressure.
• Do not perform welding operations on closed containers or
pipes.
Pay particular attention during welding operations on pipes
or containers even if these are open, empty and have been
cleaned thoroughly. Any residue of gas, fuel, oil or similar
materials might cause an explosion.
• Do not weld in places where explosive powders, gases or
vapours are present.
• When you finish welding, check that the live circuit cannot
accidentally come in contact with any parts connected to the
earth circuit.
• Position a fire-fighting device or material near the work area.
1.5 Prevention when using gas cylinders
• Inert gas cylinders contain pressurized gas and can explode if
the minimum safe conditions for transport, storage and use are
not ensured.
• Cylinders must be secured in a vertical position to a wall or
other supporting structure, with suitable means so that they
cannot fall or accidentally hit anything else.
• Screw the cap on to protect the valve during transport, com-
missioning and at the end of any welding operation.
• Do not expose cylinders to direct sunlight, sudden changes
of temperature, too high or extreme temperatures. Do not
expose cylinders to temperatures too low or too high.
• Keep cylinders away from naked flames, electric arcs, torches or
electrode guns and incandescent material sprayed by welding.
• Keep cylinders away from welding circuits and electrical cir-
cuits in general.
• Keep your head away from the gas outlet when opening the
cylinder valve.
• Always close the cylinder valve at the end of the welding
operations.
• Never perform welding operations on a pressurized gas cylinder.
1.6 Protection from electrical shock
• Electric shocks can kill you.
• Avoid touching live parts both inside and outside the welding
system while this is active (torches, guns, earth cables, elec-
trodes, wires, rollers and spools are electrically connected to
the welding circuit).
• Ensure the system and the welder are insulated electrically by
using dry bases and floors that are sufficiently insulated from
the earth.
• Ensure the system is connected correctly to a socket and a
power source equipped with an earth conductor.
• Do not touch two torches or two electrode holders at the
same time.
lf you feel an electric shock, interrupt the welding operations
immediately.
The arc striking and stabilizing device is designed for
manual or mechanically guided operation.
Increasing the length of torch or welding cables more
than 8 m will increase the risk of electric shock.

116
1.7 Electromagnetic fields &
interferences
• The welding current passing through the internal and external
system cables creates an electromagnetic field in the proxim-
ity of the welding cables and the equipment itself.
• Electromagnetic fields can affect the health of people who
are exposed to them for a long time (the exact effects are still
unknown).
Electromagnetic fields can interfere with some equipment like
pacemakers or hearing aids.
Persons fitted with pacemakers must consult their
doctor before undertaking arc welding or plasma
cutting operations.
EMC equipment classification in accordance with EN/IEC
60974-10 (See rating plate or technical data)
Class B equipment complies with electromagnetic compatibility
requirements in industrial and residential environments, includ-
ing residential locations where the electrical power is provided
by the public low-voltage supply system.
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.
Installation, use and area examination
This equipment is manufactured in compliance with the
requirements of the EN60974-10 harmonized standard and is
identified as "CLASS A" equipment.
This unit must be used for professional applications only, in
industrial environments.
The manufacturer will accept no responsability for any damages
caused by use in domestic environments.
The user must be an expert in the activity and as such
is responsible for installation and use of the equip-
ment according to the manufacturer's instructions.
lf any electromagnetic interference is noticed, the
user must solve the problem, if necessary with the
manufacturer's technical assistance.
In any case electromagnetic interference problems
must be reduced until they are not a nuisance any
longer.
Before installing this apparatus, the user must evalu-
ate the potential electromagnetic problems that
may arise in the surrounding area, considering in
particular the health conditions of the persons in
the vicinity, for example of persons fitted with pace-
makers or hearing aids.
Mains power supply requirements (See technical data)
High power equipment may, due to the primary current drawn
form the mains supply, influence the power quality of the grid.
Therefore connection restrictions or requirements regarding the
maximum permissible mains impedance (Zmax) or the required
minimum supply capacity (Ssc) at he interface point to the pub-
lic grid (point of common coupling, PCC) may apply for some
types of equipment (see technical data).
In this case 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 may be con-
nected.
In case of interference, it may be necessary to take further pre-
cautions like the filtering of the mains power supply.
lt is also necessary to consider the possibility of shielding the
power supply cable.
Welding cables
To minimise the effects of electromagnetic fields follow the fol-
lowing instructions:
- Where possible, collect and secure the earth and power
cables together.
- Never coil the welding cables around your body.
- Do not place your body in between the earth and power
cables (keep both on the same side).
- The cables must be kept as short as possible, positioned as
close as possible to each other and laid at or approximately
at ground level.
- Position the equipment at some distance from the welding
area.
- The cables must be kept away from any other cables.
Earthing connection
The earth connection of all the metal components in the welding
equipment and in the close aerea must be taken in consideration.
The earthing connection must be made according to the local
regulations.
Earthing the workpiece
When the workpiece is not earthed for electrical safety reasons
or due to its size and position, the earthing of the workpiece
may reduce the emissions. It is important to remember that the
earthing of the workpiece should neither increase the risk of
accidents for the user nor damage other electric equipment.
The earthing must be made according to the local regulations.
Shielding
The selective shielding of other cables and equipment present
in the surrounding area may reduce the problems due to elec-
tromagnetic interference. The shielding of the entire welding
equipment can be taken in considered for special applications.
1.8 IP Protection rating
S
IP23S
- Enclosure protected against access to dangerous parts by fin-
gers and against ingress of solid foreign bodies with diameter
greater than/equal to 12.5 mm
- Enclosure protected against rain at an angle of 60°.
- Enclosure protected against harmful effects due to the ingress
of water when the moving parts of the equipment are not
operating.

117
2 INSTALLATION
Installation should be performed only by expert
personnel authorised by the manufacturer.
During installation, ensure that the power source
is disconnected from the mains.
The multiple connection of power sources (series
or parallel) is prohibited.
2.1 Lifting, transport & unloading
- The equipment is provided with a handle for hand transportation.
- Use a fork lift truck paying attention during operations in
order to prevent the generator from tipping over.
Do not underestimate the weight of the equip-
ment: see technical specifications.
Do not move or position the suspended load
above persons or things.
Do not drop or apply undue pressure on the
equipment.
2.2 Positioning of the equipment
Keep to the following rules:
- Provide easy access to the equipment controls and connec-
tions.
- Do not position the equipment in very small spaces.
- Do not place the equipment on surfaces with inclination
exceeding 10° from to the horizontal plane.
- Position the equipment in a dry, clean and suitably ventilated
place.
- Protect the equipment against pouring rain and sun.
2.3 Connection
The equipment is provided with a power supply cable for con-
nection to the mains.
The system can be powered by:
- single-phase 115V
- single-phase 230V
CAUTION: to prevent injury to persons or damage
to the equipment, the selected mains voltage and
fuses must be checked BEFORE connecting the
machine to the mains. Also check that the cable is
connected to a socket provided with earth contact.
Operation of the equipment is guaranteed for volt-
age tolerances up to ±15% with respect to the
rated value.
In order to protect users, the equipment must be
correctly earthed. The power supply voltage is pro-
vided with an earth lead (yellow - green), which
must be connected to a plug provided with earth
contact.
The electrical connections must be made by
skilled technicians with the specific professional
and technical qualifications and in compliance
with the regulations in force in the country where
the equipment is installed.
The power source supply cable is provided with a yellow/
green wire that must ALWAYS be earthed. This yellow/green
wire shall NEVER be used with other voltage conductors.
Verify the existence of the earthing in the equipment used
and the good condition of the sockets.
Install only certified plugs according to the safety regula-
tions.
2.4 Installation
Connection for MMA welding
The connection shown in the figure produces
reverse polarity welding. To obtain straight polar-
ity welding, reserve the connection.
- Connect (1) the earth clamp to the negative socket (-) (2) of
the power source.
- Connect (3) the electrode holder to thpositive socket (+) (4)
of the power source.

118
Connection for TIG welding
- Connect (5) the earth clamp to the positive socket (+) (6)
ofthe power source.
- Connect the TIG torch coupling (7) to the torch socket (8)
ofthe power source.
- Connect the gas hose from the cylinder to the rear gas con-
nection.
- Connect the signal cable of the torch to the appropriate con-
nector (9).
- Connect the gas hose of the torch to the appropriate union/
connection (10).
- Connect the red colored water pipe of the torch to the
inlet quick connector of the cooling unit.
- Connect the blue colored water pipe of the torch to the
outlet quick connector of the cooling unit.
3 SYSTEM PRESENTATION
3.1 General
The Genesis 1700 AC/DC - Genesis 2200 AC/DC are constant
current inverter power sources developed for electrode (MMA),
TIG DC (direct current) and TIG AC (alternating current) welding.
They are fully digital multiprocessor systems (data processing on
DSP and communication over CAN-BUS), capable of meeting
the various requirements of the welding world in the best pos-
sible way.
3.2 FP216 Front control panel
1 Power supply
Indicates that the equipment is connected to the mains
and is on.
2 General alarm
Indicates the possible intervention of protection devices
such as the temperature protection.
3 Power on
Indicates the presence of voltage on the equipment
outlet connections.
4 7-segment display
Allows the general welding machine parameters to be
displayed during start-up, settings, current and voltage
readings, while welding, and encoding of the alarms.
5 LCD display
Allows the general welding machine parameters to be
displayed during start-up, settings, current and voltage
readings, while welding, and encoding of the alarms.
Allows all the operations to be displayed instantaneously.
6 Main adjustment handle.
Allows entry to set up, the selection and the setting of
the welding parameters.
7 Processes/functions
Allow the selection of the functions provided on the
system to which the remote control is connected.
3.3 Starting Screen
When switched on, the generator performs a succession of
checks in order to guarantee the correct operation of the system
and of all the devices connected to it.
1 μP Microprocessor
2 FP Control panel
3 DSP DSP
4 WU Cooling unit
5 RC Remote control

119
6 RI Robot interface
7 Software versions
8 ON System operation time
9 WELDING System welding time
At this stage the gas test is also carried out to check the proper
connection to the gas supply system.
3.4 Main Screen
Allows the control of the system and of the welding process,
showing the main settings.
1 Welding parameters
2 Functions
1 Welding parameters
1a Welding parameters
Select the required parameter by pressing the encoder button.
Adjust the value of the selected parameter by rotating
the encoder.
1b Parameter icon
1c Parameter value
1d Unit of measurement of the parameter
The parameters of the main screen can be personalised (consult
the “Interface personalisation” section).
2 Functions
Allow the setting of the most important process func-
tions and welding methods.
2a Allows the selection of the welding process
MMA
TIG DC
TIG AC
2b
MMA Allows the selection of the welding method
Direct polarity
Reverse polarity
Alternating current
TIG Allows the selection of the welding method
2 Step
4 Step
Bilevel
2c
MMA Synergy
Allows you to set the best arc dynamics,
selecting the type of electrode used:
STD Basic/Rutile
CLS Cellulose
CrNi Steel
Alu Aluminium
Cast iron Cast iron
Selecting the correct arc dynamics enables maximum
benefit to be derived from the power source to achieve
the best possible welding performances.
Perfect weldability of the electrode used is not guaran-
teed (weldability depends on the quality of the consum-
ables and their preservation, the operating and welding
conditions, the numerous possible applications, etc.).
TIG DC Current pulsation
CONSTANT current
PULSED current
Fast Pulse
TIG AC Current pulsation
CONSTANT current
PULSED current
AC/DC mix
2d
Allows the storage and management of 60
welding programs which can be personalised
by the operator.
(Consult the “Programs screen” section).

120
3 Measurements
During the welding operation, the real current and volt-
age measurements are shown on the LCD display.
3a Welding current
3b Welding voltage
3.5 Set up
Permits set up and adjustment of a series of additional param-
eters for improved and more accurate control of the welding
system.
The parameters present at set up are organised in relation to the
welding process selected and have a numerical code.
Entry to set up: by pressing the encoder key for 3 sec.
Selection and adjustment of the required parameter: by
turning the encoder until displaying the numerical code relating
to that parameter. If the encoder key is pressed at this point,
the value set for the parameter selected can be displayed and
adjusted.
Exit from set up: to quit the "adjustment" section, press the
encoder again.
To exit the set up, go to parameter "O" (save and quit) and press
the encoder.
List of set up parameters (MMA)
0 Save and quit
Allows you to save the changes and exit the set up.
1 Reset
Allows you to reset all the parameters to the default
values.
3 Hot start
Allows adjustment of the hot start value in MMA.
Permits an adjustable hot start in the arc striking phases,
facilitating the start operations.
Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 80%
7 Welding current
Permits adjustment of the welding current.
Parameter set in Amps (A).
Minimum 3A, Maximum Imax, Default 100A
8 Arc force
Allows adjustment of the Arc force value in MMA.
Permits an adjustable energetic dynamic response in
welding, facilitating the welder's operations.
Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 30%
312 Arc detachment voltage
Allows you to set the voltage value at which the electric
arc switch-off is forced.
It permits improved management of the various oper-
ating conditions that occur. In the spot welding phase,
for example, a low arc detachment voltage reduces
re-striking of the arc when moving the electrode away
from the piece, reducing spatter, burning and oxidisa-
tion of the piece.
If using electrodes that require high voltages, you are
advised to set a high threshold to prevent arc extinction
during welding.
Never set an arc detachment voltage higher than
the no-load voltage of the power source.
Parameter set in Volts (V).
Minimum 0V, Maximum 99.9V, Default 57V
500 Allows the selection of the required graphic interface:
XE (Easy Mode)
XA (Advanced Mode)
XP (Professional Mode)
Allows access to the higher set-up levels:
USER: user
SERV: service
SELCO: Selco
501 Info
Allows the display of a set of information related to the
system.
502 Alarm queue
Allows the intervention of an alarm to be indicated and
provides the most important indications for the solution
of any problem encountered.
(Consult the “Alarms screen” section).
551 Lock/unlock
Allows the locking of the panel controls and the inser-
tion of a protection code (consult the “Lock/unlock”
section).
552 Buzzer tone
Permits adjustment of the buzzer tone.
Minimum Off, Maximum 10, Default 5
553 Contrast
Permits adjustment of the display contrast.
Minimum 0, Maximum 50, Default 25
601 (U/D) Adjustment step
Permits adjustment of the variation step on the up-
down keys.
Minimum Off, Maximum MAX, Default 1
602 CH1, CH2, CH3, CH4 External parameter
Allows the management of external parameter 1 (mini-
mum value, maximum value, default value, parameter
selected).
(Consult the “External controls management” section).
751 Current reading
Allow the real value of the welding current to be dis-
played.
Allows the welding current display method to be set
(consult the “Interface personalisation” section).
752 Voltage reading
Allows the real value of the welding voltage to be dis-
played.
Allows the welding voltage display method to be set
(consult the “Interface personalisation” section).

121
List of set up parameters (TIG)
0 Save and quit
Allows you to save the changes and exit the set up.
1 Reset
Allows you to reset all the parameters to the default
values.
2 Pre-gas
Allows you to set and adjust the gas flow prior to striking
of the arc.
Permits filling of the torch with gas and preparation of
the environment for welding.
Minimum 0.0sec., Maximum 99.9sec., Default 0.1sec.
3 Initial current
Allows regulation of the weld starting current.
Allows a hotter or cooler welding pool to be obtained
immediately after the arc striking.
Parameter setting: Amperes (A) - Percentage (%).
Minimum 3A-1%, Maximum Imax-500%, Default 50%
5 Initial current time
Allows setting of the time for which the initial current is
maintained.
Parameter setting: seconds (s).
Minimum off, Maximum 99.9s, Default off
6 Slope-up
Allows you to set a gradual passage between the initial
current and the welding current. Parameter set in sec-
onds (s).
Minimum off, Maximum 99.9s, Default off
7 Welding current
Permits adjustment of the welding current.
Parameter set in Amps (A).
Minimum 3A, Maximum Imax, Default 100A
8 Bilevel current
Permits adjustment of the secondary current in the
bilevel welding mode.
Parameter set in Amps (A).
Minimum 3A-1%, Maximum Imax-100%, Default 50%
10 Basic current
Permits adjustment of the basic current in pulsed and
fast pulse modes.
Parameter set in Amps (A).
Minimum 3A-1%, Maximum Weld current-100%,
Default 50%
12 Pulsed frequency
Allows activation of the pulse mode.
Allows regulation of the pulse frequency.
Allows better results to be obtained in the welding of
thin materials and better aesthetic quality of the bead.
Parameter setting: Hertz (Hz) - KiloHertz (kHz).
Minimum 0.1Hz, Maximum 250Hz, Default off
13 Pulsed duty cycle
Allows regulation of the duty cycle in pulse welding.
Allows the peak current to be maintained for a shorter
or longer time.
Parameter setting: percentage (%).
Minimum 1%, Maximum 99%, Default 50%
14 Fast Pulse frequency
Allows regulation of the pulse frequency.
Allows focusing action and better stability of the elec-
tric arc to be obtained.
Parameter setting: KiloHertz (kHz).
Minimum 0.02KHz, Maximum 2.5KHz, Default off
15 Pulsed slopes
Allows setting of a slope time during the pulse operation.
Allows a smooth step to be obtained between the peak
current and the basic current, having a more or less soft
welding arc.
Parameter setting: percentage (%).
Minimum off, Maximum 100%, Default off
16 Slope-down
Allows you to set a gradual passage between the weld-
ing current and the final current.
Parameter set in seconds (s).
Minimum off, Maximum 99.9s, Default off
17 Final current
Permits adjustment of the final current.
Parameter set in Amps (A).
Minimum 3A-1%, Maximum Imax-500%, Default 50%
19 Final current time
Makes it possible to set the time for which the final cur-
rent is maintained.
Parameter setting: seconds (s).
Minimum off, Maximum 99.9s, Default off
20 Post-gas
Permits setting and adjustment of the gas flow at the
end of welding.
Minimum 0.0s, Maximum 99.9s, Default syn
101 (TIG AC) AC wave form
Allows the selection of the required AC wave form.
Default
102 (TIG AC) AC frequency
Allows regulation of the polarity inversion frequency in
TIG AC welding.
Allows focusing action and better stability of the electric
arc to be obtained.
Parameter setting: Hertz (Hz).
Minimum 20Hz, Maximum 200Hz, Default 100Hz
103 (TIG AC) AC balance
Allows regulation of the duty cycle in TIG AC welding.
Allows the positive polarity to be maintained for a
longer or shorter time.
Parameter setting: percentage (%).
Minimum 15%, Maximum 65%, Default 35%
104 (TIG AC) Fuzzy logic
Allows regulation of the power delivered by the system
during the arc striking phase by selecting the electrode
diameter used.
Makes it possible to suitably heat the electrode and/or
to keep the tip intact.
Parameter setting: millimetres (mm).
Minimum 0.1mm, Maximum 5.0mm, Default 2.4mm
105 Easy rounding
Allows a greater amount of energy to be delivered dur-
ing the TIG AC arc striking phase.
Allows the rounding of the electrode in a uniform and
regular manner.
The function is automatically disabled after the arc has
been struck.
The power delivered depends on the electrode diam-
eter set on the fuzzy logic.
Default off
107 AC - DC time mix
Allows adjustment of the welding time in direct current
when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s

122
108 AC - AC time mix
Allows regulation of the welding time in alternating cur-
rent when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s
203 Tig start (HF or LIFT)
Allows selection of the required LIFT START, HF START,
Default HF START arc striking modes.
HF Default
204 Spot welding
Allows you to enable the "spot welding" process and
establish the welding time.
Allows the timing of the welding process.
Parameter setting: seconds (s).
205 Restart
Allows the activation of the restart function.
Allows the immediate extinguishing of the arc during
the down slope or the restarting of the welding cycle.
Default on
206 (TIG DC) Easy joining
Allows striking of the arc in pulsed current and timing
of the function before the automatic reinstatement of
the pre-set welding conditions.
Allows greater speed and accuracy during tack welding
operations on the parts.
Parameter setting: seconds (s).
Minimum 0.1s, Maximum 99.9s, Default off
207 (TIG AC) Extra energy
Allows balancing of the current in positive polarity com-
pared with that in negative polarity.
Makes it possible to obtain greater cleanness of the base
material or greater welding capacity while keeping the
average current value unchanged.
Parameter setting: percentage (%).
Minimum 1%, Maximum 200%, Default 100%
312 Arc detachment voltage
Allows you to set the voltage value at which the electric
arc switch-off is forced.
It permits improved management of the various oper-
ating conditions that occur. In the spot welding phase,
for example, a low arc detachment voltage reduces
re-striking of the arc when moving the electrode away
from the piece, reducing spatter, burning and oxidisa-
tion of the piece.
Never set an arc detachment voltage higher than
the no-load voltage of the power source.
Minimum 0.0V, Maximum 99.9V, Default 45V
500 Allows the selection of the required graphic interface:
XE (Easy Mode)
XA (Advanced Mode)
XP (Professional Mode)
Allows access to the higher set-up levels:
USER: user
SERV: service
SELCO: Selco
501 Info
Allows the display of a set of information related to the
system.
502 Alarm queue
Allows the intervention of an alarm to be indicated and
provides the most important indications for the solution
of any problem encountered.
(Consult the “Alarms screen” section).
551 Lock/unlock
Allows the locking of the panel controls and the inser-
tion of a protection code (consult the “Lock/unlock”
section).
552 Buzzer tone
Permits adjustment of the buzzer tone.
Minimum Off, Maximum 10, Default 5
553 Contrast
Permits adjustment of the display contrast.
Minimum 0, Maximum 50, Default 25
601 (U/D) Adjustment step
Permits adjustment of the variation step on the up-
down keys.
Minimum Off, Maximum MAX, Default 1
602 CH1, CH2, CH3, CH4 External parameter
Allows the management of external parameter 1 (mini-
mum value, maximum value, default value, parameter
selected).
(Consult the “External controls management” section).
606 U/D torch
Allows the management of the external parameter
(CH1) (parameter selected).
751 Current reading
Allow the real value of the welding current to be dis-
played.
Allows the welding current display method to be set
(consult the “Interface personalisation” section).
752 Voltage reading
Allows the real value of the welding voltage to be dis-
played.
Allows the welding voltage display method to be set
(consult the “Interface personalisation” section).
3.6 Programs screen
1 General
Allows the storage and management of 60 welding pro-
grams which can be personalised by the operator.
1 Process of the selected program
2 Welding methods
3 Current pulsation
4 Number of the selected program
5 Main parameters of the selected program
6 Description of the selected program
2 Program storage

123
Enter the “program storage” menu by pressing button
(4) for at least 1 second.
Select the required program (or the empty memory) by
rotating the encoder.
Program stored
Memory empty
Cancel the operation by pressing button (2) .
Save all the current settings on the selected program by
pressing button (3) .
Introduce a description of the program.
- Select the required letter by rotating the encoder.
- Store the selected letter by pressing the encoder.
- Cancel the last letter by pressing button (1) .
Cancel the operation by pressing button (2) .
Confirm the operation by pressing button (3) .
The storage of a new program on an already occupied
memory location requires cancellation of the memory
location by an obligatory procedure.
Cancel the operation by pressing button (2) .
Remove the selected program by pressing button (1)
.
Resume the storage procedure.
3 Program retrieval
Retrieve the 1st program available by pressing button
(4) .
Select the required program by pressing button (4) .
Select the required program by rotating the encoder.
Only the memories location occupied by a program
are retrieved, while the empty ones are automatically
skipped.
4 Program cancellation
Select the required program by rotating the encoder.
Delete the selected program by pressing button (1)
.
Confirm the operation by pressing button (2) .
Confirm the operation by pressing button (1) .
Cancel the operation by pressing button (2) .

124
3.7 Interface personalisation
Allows the parameters to be customized on the main menu.
500 Allows the selection of the required graphic interface:
XE (Easy Mode)
XA (Advanced Mode)
XP (Professional Mode)
3.8 Lock/unlock
Allows all the settings to be locked from the control panel with
a security password.
Enter set-up by pressing the encoder key for at least 3 seconds.
Select the required parameter (551).
Activate the regulation of the selected parameter by pressing the
encoder button.
Set a numerical code (password) by rotating the encoder.
Confirm the change made by pressing the encoder button.
Save and exit the current screen by pressing button (4) .
Cancel the operation by pressing button (3) .
The carrying out of any operation on a locked control panel
causes a special screen to appear.
- Access the panel functionalities temporarily (5 minutes) by
rotating the encoder and entering the correct password (5).
Confirm the change made by pressing the encoder.
- Unlock the control panel definitively by entering set-up (fol-
low the instructions given above) and bring back parameter
551 to “off”.
3.9 External controls management
Allows the setting of the welding parameters management
method by the external devices (RC, torch…).
Enter set-up by pressing the encoder key for at least 3 seconds.
Select the required parameter (602).
Enter the “External controls management” screen by pressing
the encoder button.
Select the required RC remote control output (CH1, CH2, CH3,
CH4) by pressing button (1).
Select the required parameter (Min-Max) by pressing the
encoder button.
Adjust the required parameter (Min-Max) by rotating the
encoder.
Save and exit the current screen by pressing button (4) .
Cancel the operation by pressing button (3) .

125
3.2 FP279 front control panel
1
Power supply
Indicates that the equipment is connected to the mains
and is on.
2 General alarm
Indicates the possible intervention of protection devices
such as the temperature protection (consult the “Alarm
codes” section).
3 Power on
Indicates the presence of voltage on the equipment
outlet connections.
4 7-segment display
Allows the general welding machine parameters to be
displayed during start-up, settings, current and voltage
readings, while welding, and encoding of the alarms.
5 LCD display
Allows the general welding machine parameters to be
displayed during start-up, settings, current and voltage
readings, while welding, and encoding of the alarms.
Allows all the operations to be displayed instantaneously.
6 Main adjustment handle
Allows the welding current to be continuously adjusted.
Allows entry to set up, the selection and the setting of
the welding parameters.
7 Processes/functions
Let you select the various system functions (welding
process, welding mode, current pulse, graphic mode,
etc.).
8 Not used
9 Programs
Allows the storage and management of 64 welding
programs which can be personalised by the operator.
3.3 Main Screen
Allows the control of the system and of the welding process,
showing the main settings.
1 Measurements
During the welding operation, the real current and volt-
age measurements are shown on the LCD display.
1a Welding current
1b Welding voltage
2 Welding parameters
2a Welding parameters
Select the required parameter by pressing the encoder
button.
Adjust the value of the selected parameter by rotating
the encoder.
2b Parameter icon
2c Parameter value
2d Unit of measurement of the parameter
3 Functions
Allow the setting of the most important process func-
tions and welding methods.

3a VRD Voltage Reduction Device
Shows that the no-load voltage of the equip-
ment is controlled.
3b Allows the selection of the welding process
MMA
TIG DC
TIG AC
3c Allows the selection of the welding method
Direct polarity
Reverse polarity
Alternating current
3d
Synergy
Allows you to set the best arc dynamics, select-
ing the type of electrode used:
STD Basic/Rutile
CLS Cellulose
CrNi Steel
Alu Aluminium
Cast iron Cast iron
Selecting the correct arc dynamics enables maximum
benefit to be derived from the power source to achieve
the best possible welding performances.
Perfect weldability of the electrode used is not guaran-
teed (weldability depends on the quality of the consum-
ables and their preservation, the operating and welding
conditions, the numerous possible applications, etc.).
3e Allows the selection of the welding method
2 Step
4 Step
Bilevel
3f Current pulsation
CONSTANT current
PULSED current
Fast Pulse
3g Current pulsation
CONSTANT current
PULSED current
AC/DC mix
3.4 Set up
Permits set up and adjustment of a series of additional param-
eters for improved and more accurate control of the welding
system.
The parameters present at set up are organised in relation to the
welding process selected and have a numerical code.
Entry to set up: by pressing the encoder key for 5 sec.
Selection and adjustment of the required parameter: by
turning the encoder until displaying the numerical code relating
to that parameter. If the encoder key is pressed at this point,
the value set for the parameter selected can be displayed and
adjusted.
Exit from set up: to quit the "adjustment" section, press the
encoder again.
To exit the set up, go to parameter "O" (save and quit) and press
the encoder.
List of set up parameters (MMA)
0 Save and quit
Allows you to save the changes and exit the set up.
1 Reset
Allows you to reset all the parameters to the default
values.
3 Hot start
Allows adjustment of the hot start value in MMA.
Permits an adjustable hot start in the arc striking phases,
facilitating the start operations.
Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 80%
7 Welding current
Permits adjustment of the welding current.
Parameter set in Amps (A).
Minimum 3A, Maximum Imax, Default 100A
8 Arc force
Allows adjustment of the Arc force value in MMA.
Permits an adjustable energetic dynamic response in
welding, facilitating the welder's operations.
Increasing the value of the arc force to reduce the risks
of sticking of the electrode.
126

Parameter set as a percentage (%) of the welding current.
Minimum Off, Maximum 500%, Default 30%
204 Dynamic power control (DPC)
It enables the desired V/I characteristic to be selected.
I = C Constant current
The increase or reduction in arc length has no effect on
the welding current required.
Basic, Rutile, Acid, Steel, Cast iron
1÷ 20* Falling characteristic with adjustable slope
The increase in arc length causes a reduction in welding
current (and vice versa) according to the value imposed
by 1 to 20 amps per volt.
Cellulose, Aluminium
P = C* Constant power
The increase in arc length causes a reduction in the
welding current (and vice versa) according to the law:
V.I = K.
Cellulose, Aluminium
312 Arc detachment voltage
Allows you to set the voltage value at which the electric
arc switch-off is forced.
It permits improved management of the various oper-
ating conditions that occur. In the spot welding phase,
for example, a low arc detachment voltage reduces
re-striking of the arc when moving the electrode away
from the piece, reducing spatter, burning and oxidisa-
tion of the piece.
If using electrodes that require high voltages, you are
advised to set a high threshold to prevent arc extinction
during welding.
Never set an arc detachment voltage higher than
the no-load voltage of the power source.
Parameter set in Volts (V).
Minimum 0V, Maximum 99.9V, Default 57V
500 Allows the selection of the required graphic interface:
XE (Easy Mode)
XA (Advanced Mode)
XP (Professional Mode)
Allows access to the higher set-up levels:
USER: user
SERV: service
SELCO: Selco
551 Lock/unlock
Allows the locking of the panel controls and the inser-
tion of a protection code (consult the “Lock/unlock”
section).
552 Buzzer tone
Permits adjustment of the buzzer tone.
Minimum Off, Maximum 10, Default 5
553 Contrast
Permits adjustment of the display contrast.
Minimum 0, Maximum 50, Default 25
601 Regulation step
Allows the regulation of a parameter with a step that can
be personalised by the operator.
Minimum 1, Maximum Imax, Default 1
602 CH1, CH2, CH3, CH4 External parameter
Allows the management of external parameter 1 (mini-
mum value, maximum value).
(Consult the “External controls management” section).
751 Current reading
Allow the real value of the welding current to be dis-
played.
Allows the welding current display method to be set.
752 Voltage reading
Allows the real value of the welding voltage to be dis-
played.
Allows the welding voltage display method to be set.
List of set up parameters (TIG)
0 Save and quit
Allows you to save the changes and exit the set up.
1 Reset
Allows you to reset all the parameters to the default
values.
2 Pre-gas
Allows you to set and adjust the gas flow prior to striking
of the arc.
Permits filling of the torch with gas and preparation of
the environment for welding.
Minimum 0.0sec., Maximum 99.9sec., Default 0.1sec.
3 Initial current
Allows regulation of the weld starting current.
Allows a hotter or cooler welding pool to be obtained
immediately after the arc striking.
Parameter setting: Amperes (A) - Percentage (%).
Minimum 3A-1%, Maximum Imax-500%, Default 50%
5 Initial current time
Allows setting of the time for which the initial current is
maintained.
Parameter setting: seconds (s).
Minimum off, Maximum 99.9s, Default off
6 Slope-up
Allows you to set a gradual passage between the initial
current and the welding current. Parameter set in sec-
onds (s).
Minimum off, Maximum 99.9s, Default off
7 Welding current
Permits adjustment of the welding current.
Parameter set in Amps (A).
Minimum 3A, Maximum Imax, Default 100A
8 Bilevel current
Permits adjustment of the secondary current in the
bilevel welding mode.
On first pressing the torch button, the pre-gas starts, the arc
strikes and the initial current will be used when welding.
On first releasing it, the raising ramp of the welding current
“I1” occurs. If the welder now presses and releases the
button quickly, “I2” can be used; by pressing and releasing
it quickly again, “I1” is used again, and so on.
If you press the button for a longer time, the lowering ramp
for the current starts, thus reaching the final current.
By releasing the button again, the arc goes out and the
gas continues to flow for the post-gas stage.
Parameter setting: Amperes (A) - Percentage (%).
Minimum 3A-1%, Maximum Imax-500%, Default 50%
127

10 Basic current
Permits adjustment of the basic current in pulsed and
fast pulse modes.
Parameter set in Amps (A).
Minimum 3A-1%, Maximum Weld current-100%,
Default 50%
12 Pulsed frequency
Allows activation of the pulse mode.
Allows regulation of the pulse frequency.
Allows better results to be obtained in the welding of
thin materials and better aesthetic quality of the bead.
Parameter setting: Hertz (Hz).
Minimum 0.1Hz, Maximum 25Hz, Default off
13 Pulsed duty cycle
Allows regulation of the duty cycle in pulse welding.
Allows the peak current to be maintained for a shorter
or longer time.
Parameter setting: percentage (%).
Minimum 1%, Maximum 99%, Default 50%
14 (TIG DC) Fast Pulse frequency
Allows regulation of the pulse frequency.
Allows focusing action and better stability of the electric
arc to be obtained.
Parameter setting: KiloHertz (kHz).
Minimum 0.02KHz, Maximum 2.5KHz, Default off
15 Pulsed slopes
Allows setting of a slope time during the pulse operation.
Allows a smooth step to be obtained between the peak
current and the basic current, having a more or less soft
welding arc.
Parameter setting: percentage (%).
Minimum off, Maximum 100%, Default off
16 Slope-down
Allows you to set a gradual passage between the weld-
ing current and the final current.
Parameter set in seconds (s).
Minimum off, Maximum 99.9s, Default off
17 Final current
Permits adjustment of the final current.
Parameter set in Amps (A).
Minimum 3A-1%, Maximum Imax-500%, Default 10A
19 Final current time
Makes it possible to set the time for which the final cur-
rent is maintained.
Parameter setting: seconds (s).
Minimum off, Maximum 99.9s, Default off
20 Post-gas
Permits setting and adjustment of the gas flow at the
end of welding.
Minimum 0.0s, Maximum 99.9s, Default syn
101 (TIG AC) AC wave form
Allows the selection of the required AC wave form.
Default
102 (TIG AC) AC frequency
Allows regulation of the polarity inversion frequency in
TIG AC welding.
Allows focusing action and better stability of the electric
arc to be obtained.
Parameter setting: Hertz (Hz).
Minimum 20Hz, Maximum 200Hz, Default 100Hz
103 (TIG AC) AC balance
Allows regulation of the duty cycle in TIG AC welding.
Allows the positive polarity to be maintained for a
longer or shorter time.
Parameter setting: percentage (%).
Minimum 15%, Maximum 65%, Default 35%
104 (TIG AC) Fuzzy logic
Allows regulation of the power delivered by the system
during the arc striking phase by selecting the electrode
diameter used.
Makes it possible to suitably heat the electrode and/or
to keep the tip intact.
Parameter setting: millimetres (mm).
Minimum 0.1mm, Maximum 5.0mm, Default 2.4mm
105 Easy rounding
Allows a greater amount of energy to be delivered dur-
ing the TIG AC arc striking phase.
Allows the rounding of the electrode in a uniform and
regular manner.
The function is automatically disabled after the arc has
been struck.
The power delivered depends on the electrode diam-
eter set on the fuzzy logic.
Default off
107 AC - DC time mix
Allows adjustment of the welding time in direct current
when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s
108 AC - AC time mix
Allows regulation of the welding time in alternating cur-
rent when the AC MIX function is enabled.
Parameter setting: seconds (s).
Minimum 0.02s, Maximum 2.00s, Default 0.24s
109 (DC) Welding current
Allows adjustment of the welding current in direct cur-
rent when the AC MIX function is enabled.
Parameter setting: percentage (%).
Minimum 1%, Maximum 200%, Default 100%
203 TIG start (HF)
Allows selection of the required arc striking modes.
On= HF START, Off= LIFT START, Default HF START
204 Spot welding
Allows you to enable the "spot welding" process and
establish the welding time.
Allows the timing of the welding process.
Parameter setting: seconds (s).
Minimum off, Maximum 99.9s, Default off
205 Restart
Allows the activation of the restart function.
Allows the immediate extinguishing of the arc during
the down slope or the restarting of the welding cycle.
0=Off, 1=On, Default On
206 (TIG DC) Easy joining
Allows striking of the arc in pulsed current and timing
of the function before the automatic reinstatement of
the pre-set welding conditions.
Allows greater speed and accuracy during tack welding
operations on the parts.
Parameter setting: seconds (s).
Minimum 0.1s, Maximum 25.0s, Default off
207 (TIG AC) Extra energy
Allows balancing of the current in positive polarity com-
pared with that in negative polarity.
Makes it possible to obtain greater cleanness of the base
material or greater welding capacity while keeping the
average current value unchanged.
Parameter setting: percentage (%).
Minimum 1%, Maximum 200%, Default 100%
128

500 Allows the selection of the required graphic interface:
XE (Easy Mode)
XA (Advanced Mode)
XP (Professional Mode)
Allows access to the higher set-up levels:
USER: user
SERV: service
SELCO: Selco
551 Lock/unlock
Allows the locking of the panel controls and the inser-
tion of a protection code (consult the “Lock/unlock”
section).
552 Buzzer tone
Permits adjustment of the buzzer tone.
Minimum Off, Maximum 10, Default 5
553 Contrast
Permits adjustment of the display contrast.
Minimum 0, Maximum 50
601 (U/D) Adjustment step
Permits adjustment of the variation step on the up-
down keys.
Minimum Off, Maximum MAX, Default 1
602 CH1, CH2, CH3, CH4 External parameter
Allows the management of external parameter 1 (mini-
mum value, maximum value, default value, parameter
selected).
(Consult the “External controls management” section).
606 U/D torch
Allows the management of the external parameter
(U/D). 0=Off, 1=A
751 Current reading
Allow the real value of the welding current to be dis-
played.
Allows the welding current display method to be set.
752 Voltage reading
Allows the real value of the welding voltage to be dis-
played.
Allows the welding voltage display method to be set.
801 Guard limits
Allows the setting of the warning limits and of the guard
limits.
Allows the accurate control of the various welding
phases (consult the “Guard limits” section).
3.5 Programs screen
1 General
Allows the storage and management of 64 welding pro-
grams which can be personalised by the operator.
1 Process of the selected program
2 Welding methods
3 Current pulsation
4 Number of the selected program
5 Main parameters of the selected program
6 Description of the selected program
7 Measurements
2 Program storage
Enter the “program storage” menu by pressing button
for at least 1 second.
Select the required program (or the empty memory) by
rotating the encoder.
Program stored
Memory empty
Cancel the operation by pressing button (2) .
129

Save all the current settings on the selected program by
pressing button (3) .
Introduce a description of the program.
- Select the required letter by rotating the encoder.
- Store the selected letter by pressing the encoder.
- Cancel the last letter by pressing button (1)
Cancel the operation by pressing button (2) .
Confirm the operation by pressing button (3) .
The storage of a new program on an already occupied
memory location requires cancellation of the memory
location by an obligatory procedure.
Cancel the operation by pressing button (2) .
Remove the selected program by pressing button (1)
.
Resume the storage procedure.
3 Program retrieval
Retrieve the 1st program available by pressing button
.
Select the required program by pressing button .
Select the required program by rotating the encoder.
Only the memories location occupied by a program
are retrieved, while the empty ones are automatically
skipped.
4 Program cancellation
Enter the “Program cancellation” screen by pressing the
button for at least 1 seconds.
Select the required program by rotating the encoder.
Delete the selected program by pressing button (1)
.
Confirm the operation by pressing button (2) .
Confirm the operation by pressing button (1) .
Cancel the operation by pressing button (2) .
3.6 Interface personalisation
1 7 segment display personalisation
Enter set-up by pressing the encoder button for at least
5 seconds.
Select the required parameter by rotating the encoder
until it is displayed within the central quadrant (5).
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