EWM Tetrix 230 AC/DC Comfort 8P TM User manual

Operating instructions
EN Welding machine
Tetrix 230 AC/DC Comfort 5P TM
Tetrix 230 AC/DC Comfort 8P TM
099-000159-EW501 16.08.2016
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General instructions
WARNING
Read the operating instructions!
The operating instructions provide an introduction to the safe use of the products.
• Read and observe the operating instructions for all system components, especially the
safety instructions and warning notices!
• Observe the accident prevention regulations and any regional regulations!
• The operating instructions must be kept at the site of operation.
• Safety and warning labels at the machine indicate any possible risks.
Keep these labels clean and legible at all times.
• The machine has been constructed to the state of the art and any regulations and
standards applicable. It may be operated, serviced and repaired by trained personnel only.
In the event of queries on installation, commissioning, operation or special conditions at the
installation site, or on usage, please contact your sales partner or our customer service
department on [phone].
A list of authorised sales partners can be found at www.ewm-group.com.
Liability relating to the operation of this equipment is restricted solely to the function of the
equipment. No other form of liability, regardless of type, shall be accepted. This exclusion of
liability shall be deemed accepted by the user on commissioning the equipment.
The manufacturer is unable to monitor whether or not these instructions or the conditions and
methods are observed during installation, operation, usage and maintenance of the equipment.
An incorrectly performed installation can result in material damage and injure persons as a
result. For this reason, we do not accept any responsibility or liability for losses, damages or
costs arising from incorrect installation, improper operation or incorrect usage and maintenance
or any actions connected to this in any way.
© EWM AG
Dr. Günter-Henle-Str. 8
D-56271 Mündersbach, Germany
The copyright to this document remains the property of the manufacturer.
Reprinting, including extracts, only permitted with written approval.
The content of this document has been prepared and reviewed with all reasonable care. The information
provided is subject to change, errors excepted.

Contents
Notes on the use of these operating instructions
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1 Contents
1Contents..................................................................................................................................................3
2Safety instructions.................................................................................................................................6
2.1Notes on the use of these operating instructions ..........................................................................6
2.1.1Explanation of icons .......................................................................................................7
2.2General..........................................................................................................................................8
2.3Transport and installation ............................................................................................................12
3Intended use.........................................................................................................................................13
3.1Documents which also apply.......................................................................................................13
3.1.1Warranty.......................................................................................................................13
3.1.2Declaration of Conformity.............................................................................................13
3.1.3Welding in environments with increased electrical hazards.........................................13
3.1.4Service documents (spare parts and circuit diagrams)................................................13
3.1.5Calibration/Validation ...................................................................................................13
4Machine description – quick overview ..............................................................................................14
4.1Front view ....................................................................................................................................14
4.2Rear view.....................................................................................................................................15
4.3Machine control – Operating elements........................................................................................16
4.3.1Function sequence.......................................................................................................18
5Design and function.............................................................................................................................19
5.1General........................................................................................................................................19
5.2Transport and installation ............................................................................................................20
5.2.1Ambient conditions.......................................................................................................20
5.2.1.1In operation...................................................................................................20
5.2.1.2Transport and storage...................................................................................20
5.2.2Adjusting the length of the carrying strap.....................................................................21
5.3Machine cooling...........................................................................................................................21
5.4Workpiece lead, general..............................................................................................................21
5.5Notes on the installation of welding current leads.......................................................................22
5.6Mains connection.........................................................................................................................24
5.6.1Mains configuration ......................................................................................................24
5.7Welding torch cooling system......................................................................................................25
5.7.1Welding torch cooling unit connection..........................................................................25
5.8Welding data display....................................................................................................................25
5.9TIG welding..................................................................................................................................26
5.9.1Welding torch and workpiece line connection..............................................................26
5.9.1.1Torch connection options and pin assignments............................................27
5.10Shielding gas supply (shielding gas cylinder for welding machine).............................................27
5.10.1Connecting the shielding gas supply............................................................................28
5.10.2Gas test – setting the shielding gas volume.................................................................29
5.10.3Welding task selection..................................................................................................30
5.10.3.1Recurring welding tasks (JOB 1–7) ..............................................................31
5.10.3.2Welding parameter setting............................................................................31
5.10.4Optimising the ignition characteristics for pure tungsten electrodes............................32
5.10.4.1Manual, standard operation (JOB 0).............................................................32
5.10.4.2JOB operation (JOB 1 to 7)...........................................................................32
5.10.5Optimal and fast spherical cup formation.....................................................................33
5.10.6Automatic AC frequency...............................................................................................34
5.10.6.1Manual, standard operation (JOB 0).............................................................34
5.10.6.2JOB operation (JOB 1 to 7)...........................................................................35
5.10.7Arc ignition....................................................................................................................36
5.10.7.1HF ignition.....................................................................................................36
5.10.7.2Liftarc ............................................................................................................36
5.10.7.3Automatic cut-out..........................................................................................36
5.10.8Function sequences/operating modes .........................................................................37
5.10.8.1Explanation of symbols.................................................................................37
5.10.8.2Non-latched mode.........................................................................................38

Contents
Notes on the use of these operating instructions
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5.10.8.3Latched mode................................................................................................39
5.10.8.4spotArc ..........................................................................................................40
5.10.8.5spotmatic.......................................................................................................42
5.10.9TIG activArc welding.....................................................................................................43
5.10.10TIG antistick..................................................................................................................43
5.10.11Pulse welding................................................................................................................44
5.10.11.1Thermal pulsing.............................................................................................44
5.10.11.2Metallurgical pulsing (kHz pulsing)................................................................47
5.10.11.3Automated pulses..........................................................................................49
5.10.11.4AC pulses......................................................................................................49
5.10.11.5AC special .....................................................................................................50
5.10.12Welding torch (operating variants)................................................................................51
5.10.12.1Tap torch trigger (tapping function)...............................................................51
5.10.13Torch mode and up/down speed setting ......................................................................51
5.10.13.1Standard TIG torch (5-pole) ..........................................................................52
5.10.13.2TIG up/down torch (8-pole) ...........................................................................54
5.10.13.3Potentiometer torch (8-pole) .........................................................................56
5.10.13.4Configuring the TIG potentiometer torch connection ....................................57
5.10.13.5RETOX TIG torch (12-pole)...........................................................................58
5.11MMA welding................................................................................................................................59
5.11.1Connecting the electrode holder and workpiece lead ..................................................59
5.11.2Welding task selection..................................................................................................60
5.11.3Hotstart .........................................................................................................................61
5.11.3.1Hotstart current..............................................................................................61
5.11.3.2Hotstart time..................................................................................................61
5.11.4Antistick.........................................................................................................................62
5.11.5Pulse welding................................................................................................................62
5.12Remote control.............................................................................................................................64
5.12.1RT1 19POL...................................................................................................................64
5.12.2RTG1 19POL................................................................................................................64
5.12.3RTP1 19POL ................................................................................................................64
5.12.4RTP 2............................................................................................................................64
5.12.5RTP3 spotArc 19POL...................................................................................................64
5.12.6RTF1 19POL.................................................................................................................64
5.13Interfaces for automation .............................................................................................................65
5.13.1Remote control connection socket, 19-pole .................................................................65
5.13.2Power-saving mode (Standby).....................................................................................66
5.14Access control..............................................................................................................................66
5.15Machine configuration menu........................................................................................................66
5.15.1Selecting, changing and saving parameters.................................................................66
6Maintenance, care and disposal.........................................................................................................70
6.1General.........................................................................................................................................70
6.2Cleaning.......................................................................................................................................70
6.3Maintenance work, intervals ........................................................................................................71
6.3.1Daily maintenance tasks...............................................................................................71
6.3.1.1Visual inspection ...........................................................................................71
6.3.1.2Functional test...............................................................................................71
6.3.2Monthly maintenance tasks..........................................................................................71
6.3.2.1Visual inspection ...........................................................................................71
6.3.2.2Functional test...............................................................................................71
6.3.3Annual test (inspection and testing during operation)..................................................72
6.4Disposing of equipment................................................................................................................72
6.4.1Manufacturer's declaration to the end user..................................................................72
6.5Meeting the requirements of RoHS..............................................................................................72
7Rectifying faults....................................................................................................................................73
7.1Checklist for rectifying faults ........................................................................................................73
7.2Machine faults (error messages) .................................................................................................75
7.3Resetting welding parameters to the factory settings..................................................................76
7.4Vent coolant circuit.......................................................................................................................77

Contents
Notes on the use of these operating instructions
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8Technical data ......................................................................................................................................78
8.1Tetrix 230 AC/DC.........................................................................................................................78
9Accessories..........................................................................................................................................79
9.1Remote controls and accessories................................................................................................79
9.2Transport vehicle .........................................................................................................................79
9.3Options.........................................................................................................................................79
9.4Welding torch cooling system......................................................................................................79
9.5General accessories....................................................................................................................79
10Appendix A ...........................................................................................................................................80
10.1Parameter overview – setting information ...................................................................................80
10.1.1TIG welding ..................................................................................................................80
10.1.2MMA welding................................................................................................................81
11Appendix B ...........................................................................................................................................82
11.1Overview of EWM branches ........................................................................................................82

Safety instructions
Notes on the use of these operating instructions
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2 Safety instructions
2.1 Notes on the use of these operating instructions
DANGER
Working or operating procedures which must be closely observed to prevent imminent
serious and even fatal injuries.
• Safety notes include the "DANGER" keyword in the heading with a general warning symbol.
• The hazard is also highlighted using a symbol on the edge of the page.
WARNING
Working or operating procedures which must be closely observed to prevent serious
and even fatal injuries.
• Safety notes include the "WARNING" keyword in the heading with a general warning
symbol.
• The hazard is also highlighted using a symbol in the page margin.
CAUTION
Working or operating procedures which must be closely observed to prevent possible
minor personal injury.
• The safety information includes the "CAUTION" keyword in its heading with a general
warning symbol.
• The risk is explained using a symbol on the edge of the page.
Special technical points which users must observe.
Instructions and lists detailing step-by-step actions for given situations can be recognised via bullet
points, e.g.:
• Insert the welding current lead socket into the relevant socket and lock.

Safety instructions
Notes on the use of these operating instructions
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2.1.1 Explanation of icons
Symbol Description Symbol Description
Indicates technical aspects which the
user must observe. Activate and release/tap/tip
l
0
Switch off machine Release/do not activate
l
0
Switch on machine Press and hold
switch
Wrong Turn
Correct Numerical value – adjustable
Menu entry Signal light lights up in green
Navigating the menu Signal light flashes green
Exit menu Signal light lights up in red
4s
Time representation (e.g.: wait
4 s/activate) Signal light flashes red
Interruption in the menu display (other
setting options possible)
Tool not required/do not use
Tool required/use

Safety instructions
General
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2.2 General
WARNING
Do not carry out any unauthorised repairs or modifications!
To avoid injury and equipment damage, the unit must only be repaired or modified by
specialist, skilled persons!
The warranty becomes null and void in the event of unauthorised interference.
• Appoint only skilled persons for repair work (trained service personnel)!
Risk of injury from electrical voltage!
Voltages can cause potentially fatal electric shocks and burns on contact. Even low
voltages can cause a shock and lead to accidents.
• Never touch live components such as welding current sockets or stick, tungsten or wire
electrodes!
• Always place torches and electrode holders on an insulated surface!
• Wear the full personal protective equipment (depending on the application)!
• The machine may only be opened by qualified personnel!
Risk of injury due to radiation or heat!
Arc radiation results in injury to skin and eyes.
Contact with hot workpieces and sparks results in burns.
• Use welding shield or welding helmet with the appropriate safety level (depending on the
application)!
• Wear dry protective clothing (e.g. welding shield, gloves, etc.) according to the relevant
regulations in the country in question!
• Protect persons not involved in the work against arc beams and the risk of glare using
safety curtains!
Explosion risk!
Apparently harmless substances in closed containers may generate excessive pressure
when heated.
• Move containers with inflammable or explosive liquids away from the working area!
• Never heat explosive liquids, dusts or gases by welding or cutting!
Fire hazard!
Due to the high temperatures, sparks, glowing parts and hot slag that occur during
welding, there is a risk of flames.
• Be watchful of potential sources of fire in the working area!
• Do not carry any easily inflammable objects, e.g. matches or lighters.
• Ensure suitable fire extinguishers are available in the working area!
• Thoroughly remove any residue of flammable materials from the workpiece prior to starting
to weld.
• Only further process workpieces after they have cooled down. Do not allow them to contact
any flammable materials!

Safety instructions
General
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WARNING
Risk of accidents due to non-compliance with the safety instructions!
Non-compliance with the safety instructions can be fatal!
• Carefully read the safety instructions in this manual!
• Observe the accident prevention regulations and any regional regulations!
• Inform persons in the working area that they must comply with the regulations!
Danger when coupling multiple power sources!
Coupling multiple power sources in parallel or in series has to be carried out by
qualified personnel and in accordance with the manufacturer's guidelines. Before
bringing the power sources into service for arc welding operations, a test has to verify
that they cannot exceed the maximum allowed open circuit voltage.
• Connection of the machine may be carried out by qualified personnel only!
• When decommissioning individual power sources, all mains and welding current leadshave
to be safely disconnected from the welding system as a whole. (Danger due to inverse
voltages!)
• Do not couple welding machines with pole reversing switch (PWS series) or machines for
AC welding, as a minor error in operation can cause the welding voltages to be combined.
CAUTION
Smoke and gases!
Smoke and gases can lead to breathing difficulties and poisoning. In addition, solvent
vapour (chlorinated hydrocarbon) may be converted into poisonous phosgene due to
the ultraviolet radiation of the arc!
• Ensure that there is sufficient fresh air!
• Keep solvent vapour away from the arc beam field!
• Wear suitable breathing apparatus if appropriate!
Noise exposure!
Noise exceeding 70 dBA can cause permanent hearing damage!
• Wear suitable ear protection!
• Persons located within the working area must wear suitable ear protection!
Electromagnetic fields!
The power source may cause electrical or electromagnetic fields to be produced which
could affect the correct functioning of electronic equipment such as IT or CNC devices,
telecommunication lines, power cables, signal lines and pacemakers.
• Observe the maintenance instructions > see 6.3 chapter!
• Unwind welding leads completely!
• Shield devices or equipment sensitive to radiation accordingly!
• The correct functioning of pacemakers may be affected (obtain advice from a doctor if
necessary).

Safety instructions
General
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CAUTION
According to IEC 60974-10, welding machines are divided into two classes of
electromagnetic compatibility (the EMC class can be found in the Technical
data) > see 8 chapter:
Class A machines are not intended for use in residential areas where the power supply comes
from the low-voltage public mains network. When ensuring the electromagnetic compatibility of
class A machines, difficulties can arise in these areas due to interference not only in the supply
lines but also in the form of radiated interference.
Class B machines fulfil the EMC requirements in industrial as well as residential areas,
including residential areas connected to the low-voltage public mains network.
Setting up and operating
When operating arc welding systems, in some cases, electro-magnetic interference can occur
although all of the welding machines comply with the emission limits specified in the standard.
The user is responsible for any interference caused by welding.
In order to evaluate any possible problems with electromagnetic compatibility in the
surrounding area, the user must consider the following: (see also EN 60974-10 Appendix A)
• Mains, control, signal and telecommunication lines
• Radios and televisions
• Computers and other control systems
• Safety equipment
• The health of neighbouring persons, especially if they have a pacemaker or wear a hearing
aid
• Calibration and measuring equipment
• The immunity to interference of other equipment in the surrounding area
• The time of day at which the welding work must be carried out
Recommendations for reducing interference emission
• Mains connection, e.g. additional mains filter or shielding with a metal tube
• Maintenance of the arc welding system
• Welding leads should be as short as possible and run closely together along the ground
• Potential equalization
• Earthing of the workpiece. In cases where it is not possible to earth the workpiece directly,
it should be connected by means of suitable capacitors.
• Shielding from other equipment in the surrounding area or the entire welding system

Safety instructions
General
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Obligations of the operator!
The respective national directives and laws must be observed for operation of the machine!
• National implementation of the framework directive (89/391/EWG), as well as the associated
individual directives.
• In particular, directive (89/655/EWG), on the minimum regulations for safety and health
protection when staff members use equipment during work.
• The regulations regarding work safety and accident prevention for the respective country.
• Setting up and operating the machine according to IEC 60974-9.
• Check at regular intervals that users are working in a safety-conscious way.
• Regular checks of the machine according to IEC 60974-4.
The manufacturer's warranty becomes void if non-genuine parts are used!
• Only use system components and options (power sources, welding torches, electrode
holders, remote controls, spare parts and replacement parts, etc.) from our range of products!
• Only insert and lock accessory components into the relevant connection socket when the
machine is switched off.
Stray welding currents can destroy protective earth conductors, damage equipment and
electronic devices and cause overheating of components leading to fire.
• Make sure all welding leads are securely connected and check regularly.
• Always ensure a proper and secure electrical connection to the workpiece!
• Set up, attach or suspend all conductive power source components like casing, transport
vehicle and crane frames so they are insulated!
• Do not place any other electronic devices such as drillers or angle grinders, etc., on the power
source, transport vehicle or crane frames unless they are insulated!
• Always put welding torches and electrode holders on an insulated surface when they are not
in use!
Requirements for connection to the public mains network
High-performance machines can influence the mains quality by taking current from the mains
network. For some types of machines, connection restrictions or requirements relating to the
maximum possible line impedance or the necessary minimum supply capacity at the interface
with the public network (Point of Common Coupling, PCC) can therefore apply. In this respect,
attention is also drawn to the machines' technical data. In this case, it is the responsibility of the
operator, where necessary in consultation with the mains network operator, to ensure that the
machine can be connected.

Safety instructions
Transport and installation
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2.3 Transport and installation
WARNING
Risk of injury due to improper handling of shielding gas cylinders!
Improper handling and insufficient securing of shielding gas cylinders can cause
serious injuries!
• Observe the instructions from the gas manufacturer and any relevant regulations
concerning the use of compressed air!
• Do not attach any element to the shielding gas cylinder valve!
• Prevent the shielding gas cylinder from heating up.
CAUTION
Risk of tipping!
There is a risk of the machine tipping over and injuring persons or being damaged itself
during movement and set up. Tilt resistance is guaranteed up to an angle of 10°
(according to IEC 60974-1).
• Set up and transport the machine on level, solid ground.
• Secure add-on parts using suitable equipment.
Risk of accidents due to supply lines!
During transport, attached supply lines (mains leads, control cables, etc.) can cause
risks, e.g. by causing connected machines to tip over and injure persons!
• Disconnect all supply lines before transport!
The units are designed for operation in an upright position!
Operation in non-permissible positions can cause equipment damage.
• Only transport and operate in an upright position!

Intended use
Documents which also apply
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3 Intended use
WARNING
Hazards due to improper usage!
The machine has been constructed to the state of the art and any regulations and
standards applicable for use in industry and trade. It may only be used for the welding
procedures indicated at the rating plate. Hazards may arise for persons, animals and
material objects if the equipment is not used correctly. No liability is accepted for any
damages arising from improper usage!
• The equipment must only be used in line with its designated purpose and by trained or
expert personnel!
• Do not improperly modify or convert the equipment!
Arc welding machine for TIG DC and AC welding with lift arc (touch starting) or HF ignition (contactless)
and MMA welding as secondary process. It may be possible to expand the functionality by using
accessories (see the documentation in the relevant chapter).
3.1 Documents which also apply
3.1.1 Warranty
For more information refer to the "Warranty registration" brochure supplied and our information
regarding warranty, maintenance and testing at www.ewm-group.com!
3.1.2 Declaration of Conformity
The labelled machine complies with the following EC directives in terms of its design and
construction:
• Low Voltage Directive (LVD) 2014/35/EC
• Electromagnetic Compatibility Directive (EMC) 2014/30/EC
• Restriction of Hazardous Substance (RoHS) 2011/65/EC
In case of unauthorised changes, improper repairs, non-compliance with specified deadlines for "Arc
Welding Equipment – Inspection and Testing during Operation", and/or prohibited modifications which
have not been explicitly authorised by EWM, this declaration shall be voided. An original document of the
specific declaration of conformity is included with every product.
3.1.3 Welding in environments with increased electrical hazards
In compliance with IEC / DIN EN 60974, VDE 0544 the machines can be used in
environments with an increased electrical hazard.
3.1.4 Service documents (spare parts and circuit diagrams)
WARNING
Do not carry out any unauthorised repairs or modifications!
To avoid injury and equipment damage, the unit must only be repaired or modified by
specialist, skilled persons!
The warranty becomes null and void in the event of unauthorised interference.
• Appoint only skilled persons for repair work (trained service personnel)!
Original copies of the circuit diagrams are enclosed with the unit.
Spare parts can be obtained from the relevant authorised dealer.
3.1.5 Calibration/Validation
We hereby confirm that this machine has been tested using calibrated measuring equipment, as
stipulated in IEC/EN 60974, ISO/EN 17662, EN 50504, and complies with the admissible tolerances.
Recommended calibration interval: 12 months

Machine description – quick overview
Front view
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4 Machine description – quick overview
4.1 Front view
Figure 4-1
Item Symbol Description 0
1 Carrying handle
2 Machine control, see the relevant control operating instructions
3 Connection socket, 5-pole/8-pole/12-pole (depending on variant)
5-pole: Standard TIG torch control lead
8-pole: TIG Up/Down or potentiometer torch control lead
12-pole: Control lead for TIG up/down torch with display
4 Connection socket, "+" welding current
• TIG: Connection for workpiece lead
• MMA: Electrode holder or workpiece lead connection
5
Cooling air inlet
6 Connection socket, "-" welding current
• TIG: TIG welding torch connection
• MMA: Electrode holder or workpiece lead connection
7
G¼” connecting nipple, “-” welding current
Shielding gas connection (with yellow insulating cap) for TIG welding torch
8 Carrying strap > see 5.2.2 chapter

Machine description – quick overview
Rear view
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4.2 Rear view
6
7
8
9
4
3
2
5
1
Figure 4-2
Item Symbol Description 0
1 8-pole connection socket
Cooling unit control lead
2
Ignition type changeover switch > see 5.10.7 chapter
=------Liftarc (contact ignition)
=------HF ignition
3 Main switch, machine on/off
4
Cooling air outlet
5 Machine feet
6
Mains connection cable > see 5.6 chapter
7 G¼” connecting nipple
Shielding gas connection on the pressure regulator.
8
4-pole connection socket
Cooling unit voltage supply
9 Connection socket, 19-pole
Remote control connection
HF
HF
HF
HF

Machine description – quick overview
Machine control – Operating elements
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4.3 Machine control – Operating elements
The setting ranges for the parameter values are summarised in the Parameter overview
section > see 10.1 chapter.
Figure 4-3
Item Symbol Description 0
1 Error/status indicators
---------- Collective interference signal light > see 7.2 chapter
--------- Water deficiency signal light (welding torch cooling)
--------- Excess temperature signal light
--------- safety sign signal light
2 Functional sequence > see 4.3.1 chapter
3
Welding parameter setting rotary dial
Setting currents, times and parameters.
4 Alternating current frequency (TIG AC) rotary dial
5 Alternating current balance (TIG AC) rotary dial
6 Tungsten electrode diameter/Ignition optimisation rotary dial
S

Machine description – quick overview
Machine control – Operating elements
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Item Symbol Description 0
7 Welding current polarity button
------Direct current welding with positive polarity on the electrode holder in relation
to the workpiece (pole reversal switch, MMA only).
------DC welding with negative polarity on the torch (or stick electrode holder) in
relation to the workpiece.
--Alternating current welding with rectangular current output wave form.
Maximum power loading and safe welding.
--Alternating current welding with trapezoidal current output wave form.
The all-rounder for most applications.
---Alternating current welding with sinusoidal current output wave form.
Low noise level.
8 Pulsing push-button
--TIG automated pulsing (frequency and balance)
--------Signal light lights up in green: Pulsing (thermal pulsing)/MMA pulse welding
--------Signal light lights up in red: kHz pulsing (metallurgical pulsing)
------Special TIG AC
9 Operating mode / Power-saving mode button
--spotArc / spotmatic (spot time setting range)
---------Non-latched
------Latched
Press for 3 s to put machine into power-saving mode. To reactivate, activate one of the
operating elements > see 5.13.2 chapter.
10 Welding procedure push-button
--------MMA welding
--------TIG welding
11 Switch display / JOB number button
AMP -----Welding current display
VOLT----Welding voltage display
kW -------Welding performance display (Signal light AMP and VOLT lit simultaneously)
JOB------Display and select JOB number
12 Display, 3-digit

Machine description – quick overview
Machine control – Operating elements
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4.3.1 Function sequence
Figure 4-4
Item Symbol Description 0
1 Select welding parameters button
This button is used to select the welding parameters depending on the welding process
and operating mode used.
2
Gas pre-flow time signal light
3 AMP%
Signal light
Ignition current (TIG)/hot start current (MMA)
4 sec Signal light
Up-slope time (TIG)/hot start time (MMA)
5 sec Pulse time
TIG pulses
The pulse time applies to the main current
phase (AMP) for pulses.
TIG AC Special
The pulse time applies to the AC phase for
AC special.
6 AMP
Main current (TIG) / pulse current
I min to I max (1 A increments) Main current (MMA) I min to I max (1 A increments)
7 sec Pulse break time
TIG pulses
The pulse break time applies to the
secondary current phase (AMP%)
TIG AC Special
The pulse break time applies to the
DC phase with AC special.
8 AMP%
Secondary current / pulse pause current
9 sec Down-slope time signal light
10 AMP% End-crater current signal light
11
Gas post-flow time
12
Electrode diameter signal light
Ignition optimisation (TIG)/tungsten balling basic setting
13
+ Balance -
%
Balance signal light
AC balance (JOB 1–7), pulse balance or amplitude balance
14 Signal light, two colour
Green: AC frequency (TIG)/pulse frequency (MMA)
Red: Pulse frequency (TIG, kHz pulsing)
15 activArc TIG welding process
• Switch activArc <>
• Correct the activArc characteristic (setting range: 0 to 100)

Design and function
General
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5 Design and function
5.1 General
WARNING
Risk of injury from electric shock!
Contact with live parts, e.g. welding current sockets, is potentially fatal!
• Follow safety instructions on the opening pages of the operating instructions.
• Commissioning may only be carried out by persons who have the relevant expertise of
working with arc welding machines!
• Connection and welding leads (e.g. electrode holder, welding torch, workpiece lead,
interfaces) may only be connected when the machine is switched off!

Design and function
Transport and installation
20 099-000159-EW501
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5.2 Transport and installation
WARNING
Risk of accident due to improper transport of machines that may not be lifted!
Do not lift or suspend the machine! The machine can fall down and cause injuries! The
handles and brackets are suitable for transport by hand only!
• The machine may not be lifted by crane or suspended!
The units are designed for operation in an upright position!
Operation in non-permissible positions can cause equipment damage.
• Only transport and operate in an upright position!
Accessory components and the power source itself can be damaged by incorrect connection!
• Only insert and lock accessory components into the relevant connection socket when the
machine is switched off.
• Comprehensive descriptions can be found in the operating instructions for the relevant
accessory components.
• Accessory components are detected automatically after the power source is switched on.
Protective dust caps protect the connection sockets and therefore the machine against dirt and
damage.
• The protective dust cap must be fitted if there is no accessory component being operated on
that connection.
• The cap must be replaced if faulty or if lost!
5.2.1 Ambient conditions
T he machine must not be operated in the open air and must only be set up and operated on a
suitable, stable and level base!
• The operator must ensure that the ground is non-slip and level, and provide sufficient lighting
for the place of work.
• Safe operation of the machine must be guaranteed at all times.
Unusually high quantities of dust, acid, corrosive gases or substances may damage the
equipment.
• Avoid high volumes of smoke, vapour, oil vapour and grinding dust!
• Avoid ambient air containing salt (sea air)!
5.2.1.1 In operation
Temperature range of the ambient air:
• -25 °C to +40 °C
Relative air humidity:
• Up to 50% at 40 °C
• Up to 90% at 20 °C
5.2.1.2 Transport and storage
Storage in an enclosed space, temperature range of the ambient air:
• -30 °C to +70 °C
Relative air humidity
• Up to 90% at 20 °C