FRO­NIUS Drive EasyTwin User manual

Fronius prints on elemental chlorine free paper (ECF) sourced from certified sustainable forests (FSC).
/ Perfect Charging / Perfect Welding / Solar Energy
42,0426,0194,EN 005-25052020
Drive EasyTwin Operating Instructions
System extension
EN

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EN
Dear reader,
Introduction Thank you for the trust you have placed in our company and congratulations on buying this
high-quality Fronius product. These instructions will help you familiarise yourself with the
product. Reading the instructions carefully will enable you to learn about the many different
features it has to offer. This will allow you to make full use of its advantages.
Please also note the safety rules to ensure greater safety when using the product. Careful
handling of the product will repay you with years of safe and reliable operation. These are
essential prerequisites for excellent results.
Explanation of
safety notices DANGER!
Indicates immediate danger.
► If not avoided, death or serious injury will result.
WARNING!
Indicates a potentially hazardous situation.
► If not avoided, death or serious injury may result.
CAUTION!
Indicates a situation where damage or injury could occur.
► If not avoided, minor injury and/or damage to property may result.
NOTE!
Indicates a risk of flawed results and possible damage to the equipment.

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Contents
Installation and commissioning .................................................................................................................. 7
Standard and PowerLiner variants........................................................................................................ 7
Installing the CrashBox Drive EasyTwin on the robot........................................................................... 8
Attaching the torch neck ....................................................................................................................... 9
Securing the hosepack to the spring balancer suspension devices ..................................................... 9
Connecting the hosepack ..................................................................................................................... 10
Installing the wirefeeding hose in the Robacta Drive EasyTwin ........................................................... 10
Threading the welding wire................................................................................................................... 11
Safety rules ................................................................................................................................................ 15
General ................................................................................................................................................. 15
Proper use ............................................................................................................................................ 15
Environmental conditions...................................................................................................................... 15
Obligations of the operator.................................................................................................................... 16
Obligations of personnel ....................................................................................................................... 16
Mains connection.................................................................................................................................. 16
Protecting yourself and others .............................................................................................................. 16
Noise emission values .......................................................................................................................... 17
Danger from toxic gases and vapours .................................................................................................. 17
Danger from flying sparks ..................................................................................................................... 18
Risks from mains current and welding current...................................................................................... 18
Meandering welding currents................................................................................................................ 19
EMC Device Classifications .................................................................................................................. 20
EMC measures ..................................................................................................................................... 20
EMF measures...................................................................................................................................... 20
Specific hazards.................................................................................................................................... 21
Requirement for the shielding gas ........................................................................................................ 22
Danger from shielding gas cylinders..................................................................................................... 22
Safety measures at the installation location and during transport ........................................................ 22
Safety measures in normal operation ................................................................................................... 23
Commissioning, maintenance and repair.............................................................................................. 24
Safety inspection................................................................................................................................... 24
Disposal ................................................................................................................................................ 24
Safety symbols...................................................................................................................................... 24
Data protection...................................................................................................................................... 24
Copyright............................................................................................................................................... 25
General ...................................................................................................................................................... 26
Regarding these operating instructions ................................................................................................ 26
Comparison of Drive EasyTwin with TimeTwin Digital.......................................................................... 26
Drive EasyTwin advantages ................................................................................................................. 26
Drive EasyTwin functional principle ...................................................................................................... 26
Lead power source and trail power source........................................................................................... 27
Drive EasyTwin application areas......................................................................................................... 27
Dimensioning of the robot..................................................................................................................... 27
Welding torch cleaning station.............................................................................................................. 28
System requirements ................................................................................................................................. 29
System requirements and minimum equipment for Drive EasyTwin .................................................... 29
Drive EasyTwin mechanical requirements............................................................................................ 29
Control elements and connections............................................................................................................. 30
Drive EasyTwin drive unit controls........................................................................................................ 30
Welding technology aspects ...................................................................................................................... 31
Shielding gases for Drive EasyTwin ..................................................................................................... 31
Gas flow for Drive EasyTwin................................................................................................................. 31
Earth connection................................................................................................................................... 31
Welding circuit inductivity L, welding circuit resistance r....................................................................... 31
Stick out ................................................................................................................................................ 32
Tilt angle of the welding torch ............................................................................................................... 32
Arc combination options........................................................................................................................ 32
PCS/pulsed ................................................................................................................................................ 33
Symbols ................................................................................................................................................ 33
Material transfer .................................................................................................................................... 33

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Special features and advantages.......................................................................................................... 33
Potential applications, area of application............................................................................................. 33
Welding parameter standard values .......................................................................................................... 34
Alignment of welding torch relative to the workpiece for fillet welds ..................................................... 34
Alignment of welding torch relative to the workpiece for lap joints........................................................ 34
Area of application for Drive EasyTwin - steel, diameter 1.2 mm - 1.0 mm.......................................... 35
Welding technology options.................................................................................................................. 35
Care, maintenance and disposal ............................................................................................................... 37
General ................................................................................................................................................. 37
Example: consumption of filler metal .................................................................................................... 37
Before shift starts/before starting up..................................................................................................... 37
After 25 hours of arc time...................................................................................................................... 37
After 50 hours of arc time...................................................................................................................... 37
Disposal ................................................................................................................................................ 37
Replacing wearing parts ............................................................................................................................ 38
Preparation replacing the feed rollers and nozzle................................................................................. 38
Replacing the inlet nozzle..................................................................................................................... 40
Replacing the feed rollers ..................................................................................................................... 40

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EN
Installation and commissioning
Standard and
PowerLiner vari-
ants
The welding wire can be fed in two different ways with the Drive EasyTwin process.
With the Standard variant, the welding wire is fed from the drum in the direction of the Ro-
bacta Drive EasyTwin by means of a wirefeeder. The wirefeeding hose is connected to the
hosepack by a special holder and hung up using spring balancer suspension devices.
With the PowerLiner variant, the welding wire is fed directly from the drum in the direction
of the Robacta Drive EasyTwin. The PowerLiner hose is connected to the hosepack by a
Velcro® strap and hung up using spring balancer suspension devices.

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Installing the
CrashBox Drive
EasyTwin on the
robot
1 2
3 4
5 6
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Attaching the
torch neck
Possible tilt angles:
x = 5° / 25° / 45° / 65°
1 2
Securing the
hosepack to the
spring balancer
suspension de-
vices
Secure the hosepack to the spring ba-
lancer suspension devices using Vel-
cro® fasteners
-In the case of a 6 m hosepack >
use at least 3 suitably positioned
spring balancer suspension devi-
ces
Standard variant
Secure the wirefeeding hose to the ho-
sepack at a distance of approx 50 cm
using a holder (item number:
44,0350,3952).
Important! The wirefeeding hose must
be secured to the hosepack using a
holder 20 cm before the Robacta Drive
EasyTwin unit.
PowerLiner variant
Secure the PowerLiner to the hose-
pack at a distance of approx 50 cm
using Velcro® fasteners (item number:
42,0300,2589).
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2
1
2
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Bring the PowerLiner into position at
the interface to the Robacta Drive Ea-
syTwin using a Velcro® fastener
Connecting the
hosepack
Connect the lead hosepack (the gas purging line and the gas line are only contained
in the leading hosepack) to the lead power source (where the control box is mounted)
Connect the trail power cable (control line is only contained in the trail hosepack) to
the trail power source
Connect the coolant lines to the cooling unit
Connect the gas purging line to the control box
Connect the gas line to the control box
Connect the control line to the control box
Connect the LocalNet line to the control box and trail power source
Connect the compressed air line to the control box
Connect the gas feed to the control box (min. 30 l/min)
Installing the
wirefeeding hose
in the Robacta
Drive EasyTwin
The wirefeeding hose must only be fitted when using the device for the first time.
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3
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3 4
Now the welding wire must be threaded (see "Threading the welding wire" from Figure 3
on page 12)
Threading the
welding wire NOTE!
For technical reasons, only the inner liners provided in the original equipment kit
must be used.
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3
4
1
2

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3
* Fully open
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5 6
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1
2 3
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*** Set the contact pressure (3 rings must be visible)
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Safety rules
General The device is manufactured using state-of-the-art technology and according to recognised
safety standards. If used incorrectly or misused, however, it can cause:
- injury or death to the operator or a third party,
- damage to the device and other material assets belonging to the operating company,
- inefficient operation of the device.
All persons involved in commissioning, operating, maintaining and servicing the device
must:
- be suitably qualified,
- have sufficient knowledge of welding and
- read and follow these operating instructions carefully.
The operating instructions must always be at hand wherever the device is being used. In
addition to the operating instructions, attention must also be paid to any generally applica-
ble and local regulations regarding accident prevention and environmental protection.
All safety and danger notices on the device
- must be in a legible state,
- must not be damaged,
- must not be removed,
- must not be covered, pasted or painted over.
For the location of the safety and danger notices on the device, refer to the section headed
"General" in the operating instructions for the device.
Before switching on the device, rectify any faults that could compromise safety.
This is for your personal safety!
Proper use The device is to be used exclusively for its intended purpose.
The device is intended solely for the welding processes specified on the rating plate.
Any use above and beyond this purpose is deemed improper. The manufacturer shall not
be held liable for any damage arising from such usage.
Proper use includes:
- carefully reading and following all the instructions given in the operating instructions
- studying and obeying all safety and danger notices carefully
- performing all stipulated inspection and maintenance work.
Never use the device for the following purposes:
- Thawing out pipes
- Charging batteries
- Starting engines
The device is designed for use in industry and the workshop. The manufacturer accepts
no responsibility for any damage caused through use in a domestic setting.
The manufacturer likewise accepts no liability for inadequate or incorrect results.
Environmental
conditions
Operation or storage of the device outside the stipulated area will be deemed as not in ac-
cordance with the intended purpose. The manufacturer shall not be held liable for any dam-
age arising from such usage.

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Ambient temperature range:
- during operation: -10 °C to + 40 °C (14 °F to 104 °F)
- during transport and storage: -20 °C to +55 °C (-4 °F to 131 °F)
Relative humidity:
- up to 50% at 40 °C (104 °F)
- up to 90% at 20 °C (68 °F)
The surrounding air must be free from dust, acids, corrosive gases or substances, etc.
Can be used at altitudes of up to 2000 m (6561 ft. 8.16 in.)
Obligations of the
operator
The operator must only allow persons to work with the device who:
- are familiar with the fundamental instructions regarding safety at work and accident
prevention and have been instructed in how to use the device
- have read and understood these operating instructions, especially the section "safety
rules", and have confirmed as much with their signatures
- are trained to produce the required results.
Checks must be carried out at regular intervals to ensure that operators are working in a
safety-conscious manner.
Obligations of
personnel
Before using the device, all persons instructed to do so undertake:
- to observe the basic instructions regarding safety at work and accident prevention
- to read these operating instructions, especially the "Safety rules" section and sign to
confirm that they have understood them and will follow them.
Before leaving the workplace, ensure that people or property cannot come to any harm in
your absence.
Mains connection Devices with a higher rating may affect the energy quality of the mains due to their current
consumption.
This may affect a number device types in terms of:
- Connection restrictions
- Criteria with regard to the maximum permissible mains impedance *)
- Criteria with regard to the minimum short-circuit power requirement *)
*) at the interface with the public grid
see "Technical data"
In this case, the plant operator or the person using the device should check whether the
device may be connected, where appropriate by discussing the matter with the power sup-
ply company.
IMPORTANT! Ensure that the mains connection is earthed properly
Protecting your-
self and others
Anyone working with the device exposes themselves to numerous risks, e.g.
- flying sparks and hot pieces of metal
- Arc radiation, which can damage eyes and skin
- Hazardous electromagnetic fields, which can endanger the lives of those using cardi-
ac pacemakers
- Risk of electrocution from mains current and welding current
- Greater noise pollution
- Harmful welding fumes and gases

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EN
Suitable protective clothing must be worn when working with the device. The protective
clothing must have the following properties:
- Flame-resistant
- Insulating and dry
- Covers the whole body, is undamaged and in good condition
- Safety helmet
- Trousers with no turn-ups
Protective clothing refers to a variety of different items. Operators should:
- Protect eyes and face from UV rays, heat and sparks using a protective visor and reg-
ulation filter
- Wear regulation protective goggles with side protection behind the protective visor
- Wear stout footwear that provides insulation even in wet conditions
- Protect the hands with suitable gloves (electrically insulated and providing protection
against heat)
- Wear ear protection to reduce the harmful effects of noise and to prevent injury
Keep all persons, especially children, out of the working area while any devices are in op-
eration or welding is in progress. If, however, there are people in the vicinity:
- Make them aware of all the dangers (risk of dazzling by the arc, injury from flying
sparks, harmful welding fumes, noise, possible risks from mains current and welding
current, etc.)
- Provide suitable protective equipment
- Alternatively, erect suitable safety screens/curtains.
Noise emission
values
The device generates a maximum sound power level of <80 dB(A) (ref. 1pW) when idling
and in the cooling phase following operation at the maximum permissible operating point
under maximum rated load conditions according to EN 60974-1.
It is not possible to provide a workplace-related emission value during welding (or cutting)
as this is influenced by both the process and the environment. All manner of different weld-
ing parameters come into play, including the welding process (MIG/MAG, TIG welding), the
type of power selected (DC or AC), the power range, the type of weld metal, the resonance
characteristics of the workpiece, the workplace environment, etc.
Danger from toxic
gases and va-
pours
The fumes produced during welding contain harmful gases and vapours.
Welding fumes contain substances that cause cancer, as stated in Monograph 118 of the
International Agency for Research on Cancer.
Use at-source extraction and a room extraction system.
If necessary, use a welding torch with an integrated extraction device.
Keep your face away from welding fumes and gases.
Fumes and hazardous gases
- must not be breathed in
- must be extracted from the working area using appropriate methods.
Ensure an adequate supply of fresh air. Ensure that there is a ventilation rate of at least
20 m³ per hour at all times.
Otherwise, a welding helmet with an air supply must be worn.
If there is any doubt about whether the extraction capacity is sufficient, the measured toxic
emission values should be compared with the permissible limit values.

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The following components are responsible, amongst other things, for the degree of toxicity
of welding fumes:
- Metals used for the workpiece
- Electrodes
- Coatings
- Cleaners, degreasers, etc.
- Welding process used
The relevant material safety data sheets and manufacturer's specifications for the listed
components should therefore be studied carefully.
Recommendations for trade fair scenarios, risk management measures and for identifying
working conditions can be found on the European Welding Association website under
Health & Safety (https://european-welding.org).
Flammable vapours (e.g. solvent fumes) should be kept away from the arc's radiation area.
Close the shielding gas cylinder valve or main gas supply if no welding is taking place.
Danger from fly-
ing sparks
Flying sparks may cause fires or explosions.
Never weld close to flammable materials.
Flammable materials must be at least 11 metres (36 ft. 1.07 in.) away from the arc, or al-
ternatively covered with an approved cover.
A suitable, tested fire extinguisher must be available and ready for use.
Sparks and pieces of hot metal may also get into adjacent areas through small gaps or
openings. Take appropriate precautions to prevent any danger of injury or fire.
Welding must not be performed in areas that are subject to fire or explosion or near sealed
tanks, vessels or pipes unless these have been prepared in accordance with the relevant
national and international standards.
Do not carry out welding on containers that are being or have been used to store gases,
propellants, mineral oils or similar products. Residues pose an explosive hazard.
Risks from mains
current and weld-
ing current
An electric shock is potentially life threatening and can be fatal.
Do not touch live parts either inside or outside the device.
During MIG/MAG welding and TIG welding, the welding wire, the wirespool, the feed rollers
and all pieces of metal that are in contact with the welding wire are live.
Always set the wirefeeder up on a sufficiently insulated surface or use a suitable, insulated
wirefeeder holder.
Make sure that you and others are protected with an adequately insulated, dry base or cov-
er for the earth or ground potential. This base or cover must extend over the entire area
between the body and the earth or ground potential.
All cables and leads must be secured, undamaged, insulated and adequately dimen-
sioned. Replace loose connections and scorched, damaged, or inadequately dimensioned
cables and leads immediately.
Use the handle to ensure the power connections are tight before every use.
In the case of power cables with a bayonet connector, rotate the power cable around the
longitudinal axis by at least 180° and pretension.
Do not wrap cables or leads around the body or parts of the body.

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EN
The electrode (rod electrode, tungsten electrode, welding wire, etc.) must
- never be immersed in liquid for cooling
- Never touch the electrode when the power source is switched on.
Double the open circuit voltage of a power source can occur between the welding elec-
trodes of two power sources. Touching the potentials of both electrodes at the same time
may be fatal under certain circumstances.
Arrange for the mains cable to be checked regularly by a qualified electrician to ensure the
ground conductor is functioning properly.
Protection class I devices require a mains supply with ground conductor and a connector
system with ground conductor contact for proper operation.
Operation of the device on a mains supply without ground conductor and on a socket with-
out ground conductor contact is only permitted if all national regulations for protective sep-
aration are observed.
Otherwise, this is considered gross negligence. The manufacturer shall not be held liable
for any damage arising from such usage.
If necessary, provide adequate earthing for the workpiece.
Switch off unused devices.
Wear a safety harness if working at height.
Before working on the device, switch it off and pull out the mains plug.
Attach a clearly legible and easy-to-understand warning sign to the device to prevent any-
one from plugging the mains plug back in and switching it on again.
After opening the device:
- Discharge all live components
- Ensure that all components in the device are de-energised.
If work on live parts is required, appoint a second person to switch off the main switch at
the right moment.
Meandering weld-
ing currents
If the following instructions are ignored, meandering welding currents can develop with the
following consequences:
- Fire hazard
- Overheating of parts connected to the workpiece
- Irreparable damage to ground conductors
- Damage to device and other electrical equipment
Ensure that the workpiece is held securely by the workpiece clamp.
Attach the workpiece clamp as close as possible to the area that is to be welded.
Position the device with sufficient insulation against electrically conductive environments,
e.g. Insulation against conductive floor or insulation to conductive racks.
If distribution boards, twin-head mounts, etc., are being used, note the following: The elec-
trode of the welding torch / electrode holder that is not used is also live. Make sure that the
welding torch / electrode holder that is not used is kept sufficiently insulated.
In the case of automated MIG/MAG applications, ensure that only an insulated wire elec-
trode is routed from the welding wire drum, large wirefeeder spool or wirespool to the wire-
feeder.

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EMC Device Clas-
sifications
Devices in emission class A:
- Are only designed for use in industrial settings
- Can cause line-bound and radiated interference in other areas
Devices in emission class B:
- Satisfy the emissions criteria for residential and industrial areas. This is also true for
residential areas in which the energy is supplied from the public low-voltage mains.
EMC device classification as per the rating plate or technical data.
EMC measures In certain cases, even though a device complies with the standard limit values for emis-
sions, it may affect the application area for which it was designed (e.g. when there is sen-
sitive equipment at the same location, or if the site where the device is installed is close to
either radio or television receivers).
If this is the case, then the operator is obliged to take appropriate action to rectify the situ-
ation.
Check and evaluate the immunity to interference of nearby devices according to national
and international regulations. Examples of equipment that may be susceptible to interfer-
ence from the device include:
- Safety devices
- Power, signal and data transfer lines
- IT and telecommunications devices
- Measuring and calibrating devices
Supporting measures for avoidance of EMC problems:
1. Mains supply
- If electromagnetic interference arises despite correct mains connection, addition-
al measures are necessary (e.g. use a suitable line filter).
2. Welding power leads
- must be kept as short as possible
- must run close together (to avoid EMF problems)
- must be kept well apart from other leads
3. Equipotential bonding
4. Earthing of the workpiece
- If necessary, establish an earth connection using suitable capacitors.
5. Shielding, if necessary
- Shield off other nearby devices
- Shield off entire welding installation
EMF measures Electromagnetic fields may pose as yet unknown risks to health:
- effects on the health of others in the vicinity, e.g. wearers of pacemakers and hearing
aids
- wearers of pacemakers must seek advice from their doctor before approaching the de-
vice or any welding that is in progress
- for safety reasons, keep distances between the welding cables and the welder's head/
torso as large as possible
- do not carry welding cables and hosepacks over the shoulders or wind them around
any part of the body