Weco Micro Pulse 302MFK User manual

Cod. 006.0001.1720
30/03/2020 V.2.8
Micro Pulse 302MFK
Instruction Manual
ENGLISHTranslation of original instructions

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Cod. 006.0001.1720
30/03/2020 V.2.8 Micro Pulse 302MFK
2
ENGLISH

WELD THE WORLD
Cod. 006.0001.1720
30/03/2020 V.2.8
Micro Pulse 302MFK
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ENGLISH
INDICE GENERALE
1 INTRODUZIONE........................................................................................................................................4
1.1 PRESENTAZIONE .................................................................................................................................... 5
2 INSTALLAZIONE ......................................................................................................................................6
2.1 PANNELLO FRONTALE ........................................................................................................................... 6
2.2 PANNELLO POSTERIORE....................................................................................................................... 7
2.3 INSTALLAZIONE MIG/MAG...................................................................................................................... 8
2.4 PREPARAZIONE PER SALDATURA MMA............................................................................................. 12
2.5 PREPARAZIONE PER SALDATURA TIG............................................................................................... 13
3 INTERFACCIA UTENTE..........................................................................................................................14
4 ACCENSIONE DELL’APPARECCHIATURA .......................................................................................... 17
5 RESET (CARICAMENTO IMPOSTAZIONI DI FABBRICA).................................................................... 17
5.1 RESET PARZIALE .................................................................................................................................. 18
5.2 RESET TOTALE...................................................................................................................................... 19
6 SET UP (IMPOSTAZIONE INIZIALE DEL GENERATORE DI CORRENTE).......................................... 20
6.1 CONTATORE ORE DI LAVORO ............................................................................................................. 22
6.2 PROCEDURA DI BLOCCO..................................................................................................................... 23
6.3 REGOLAZIONE DEL FLUSSO DEL GAS............................................................................................... 26
6.4 RIEMPIMENTO TORCIA......................................................................................................................... 26
6.5 CALIBRAZIONE DEL CIRCUITO DI SALDATURA................................................................................. 27
7 GESTIONE DEGLI ALLARMI..................................................................................................................28
8 SELEZIONE DELLA MODALITÀ DI SALDATURA E DEL PROCEDIMENTO DEL PULSANTE TORCIA
................................................................................................................................................................30
8.1 SALDATURA MIG/MAG 2T ..................................................................................................................... 31
8.2 SALDATURA MIG/MAG 2T SPOT .......................................................................................................... 31
8.3 SALDATURA MIG/MAG 4T ..................................................................................................................... 31
8.4 SALDATURA MIG/MAG 4T B-LEVEL ..................................................................................................... 31
8.5 SALDATURA MIG/MAG 2T - 3 LIVELLI.................................................................................................. 32
8.6 SALDATURA MIG/MAG 2T SPOT - 3 LIVELLI ....................................................................................... 32
8.7 SALDATURA MIG/MAG 4T - 3 LIVELLI.................................................................................................. 32
8.8 SALDATURA MIG/MAG 4T B-LEVEL - 3 LIVELLI .................................................................................. 33
9 ATTIVAZIONE DEI PARAMETRI............................................................................................................. 34
9.1 PARAMETRI DI SALDATURA................................................................................................................. 35
10 CARATTERISTICHE DEI LIVELLI DI MENU.......................................................................................... 41
10.1 1° LIVELLO ............................................................................................................................................. 41
10.2 2° LIVELLO ............................................................................................................................................. 41
10.3 3° LIVELLO ............................................................................................................................................. 42
11 IMPOSTAZIONI DI SALDATURA............................................................................................................42
11.1 SELEZIONE DELLE CURVE DI SALDATURA ....................................................................................... 42
11.1.1 Curve speciali: HIGH SPEED, POWER FOCUS e POWER ROOT ....................................................... 43
11.2 SALDATURA MIG/MAG MANUALE........................................................................................................ 45
11.2.1 Impostazione parametri MIG/MAG manuale (1° livello): regolazione dell’induttanza ............................. 46
11.2.2 Impostazione parametri MIG/MAG manuale (1° livello) .......................................................................... 46
11.2.3 Impostazione parametri MIG/MAG manuale (2° LIVELLO) .................................................................... 46
11.3 SALDATURA MIG/MAG SINERGICA...................................................................................................... 47
11.3.1 Impostazione parametri MIG/MAG sinergico (1° livello): settaggio curva sinergica................................ 48
11.3.2 Impostazione parametri MIG/MAG sinergico (1° livello) ......................................................................... 48

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11.3.3 Impostazione parametri MIG/MAG sinergico (2° livello) ......................................................................... 49
11.4 SALDATURA MIG/MAG SINERGICA PULSATA..................................................................................... 51
11.4.1 Impostazione parametri MIG/MAG sinergico pulsato (1° livello): settaggio curva sinergica................... 52
11.4.2 Impostazione parametri MIG/MAG sinergico pulsato (1° livello)............................................................. 52
11.4.3 Impostazione parametri MIG/MAG sinergico pulsato (2° livello)............................................................. 53
11.5 SALDATURA MIG/MAG SINERGICA DOPPIO PULSATO..................................................................... 55
11.5.1 Impostazione parametri MIG/MAG sinergico doppio pulsato (1° livello): settaggio curva sinergica ....... 56
11.5.2 Impostazione parametri MIG/MAG sinergico doppio pulsato (1° livello)................................................. 56
11.5.3 Impostazione parametri MIG/MAG sinergico doppio pulsato (2° livello)................................................. 57
11.6 SALDATURA CON ELETTRODO (MMA) ............................................................................................... 59
11.6.1 Impostazione parametri MMA (1° livello)................................................................................................. 59
11.6.2 Impostazione parametri MMA (2° livello)................................................................................................. 59
11.7 SALDATURA TIG LIFT DC...................................................................................................................... 60
11.7.1 Impostazione parametri TIG LIFT DC (1° livello) .................................................................................... 60
11.7.2 Impostazione parametri TIG LIFT DC (2° livello) .................................................................................... 61
12 GESTIONE DEI JOB ............................................................................................................................... 62
12.1 SALVATAGGIO JOB................................................................................................................................ 62
12.2 CARICAMENTO JOB UTENTE .............................................................................................................. 63
12.3 CANCELLAZIONE JOB .......................................................................................................................... 64
13 DATI TECNICI..........................................................................................................................................66
14 SCHEMA ELETTRICO ............................................................................................................................69
14.1 COMANDO REMOTO............................................................................................................................. 74
14.1.1 RC03: Schema elettrico .......................................................................................................................... 75
14.1.2 RC04: Schema elettrico .......................................................................................................................... 75
14.1.3 RC05: Schema elettrico .......................................................................................................................... 75
14.1.4 RC06: Schema elettrico .......................................................................................................................... 75
15 RICAMBI..................................................................................................................................................76
15.1 MOTORE TRAINA FILO.......................................................................................................................... 79
15.2 RULLI TRAINAFILO................................................................................................................................ 81

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1 INTRODUCTION
IMPORTANT!
This handbook must be consigned to the user prior to installation and commissioning of the unit.
Read the "General prescriptions for use" handbook supplied separately from this manual before
installing and commissioning the unit.
The meaning of the symbols in this manual and the associated precautionary information are given in
the "General prescriptions for use”.
If the "General prescriptions for use" are not present, it is mandatory to request a replacement copy
from the manufacturer or from your dealer.
Retain these documents for future consultation.
KEY
DANGER!
This pictogram warns of danger of death or serious injury.
WARNING!
This pictogram warns of a risk of injury or damage to property.
CAUTION!
This pictogram warns of a potentially hazardous situation.
INFORMATION!
This pictogram gives important information concerning the execution of the relevant operations.

i
󰀨
containing the associated information.
 

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1.1 INTRODUCTION
Micro Pulse 302MFK is a compact and rugged three-phase, synergic inverter power source for MIG/
MAG, MMA and TIG LIFT welding.

󰀨
Polarity change allows welding with self-shielded wires.
Available MIG/MAG mode: manual, synergic, pulsed synergic and double pulsed synergic.
Pulsed Synergic and Double Pulsed Synergic modes ensure excellent appearance of the weld bead,
without spatter or deformation when welding aluminium, stainless steel and regular steels.
A broad range of synergic MIG/MAG programs facilitates the selection of precise welding parameters
rapidly and using all types of wire.
A perfect wire feeding is guaranteed thanks to a 4-rolls motor drive included in Micro Pulse 302MFK.

period of time according to welding conditions.

machine.
Accessories that can be connected to the unit:
- Manual remote controller for remote adjustment of the welding current.

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2 INSTALLATION
DANGER!
Lifting and positioning
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
2.1 FRONT PANEL
5
1
2
34
Negative pole welding socket [Item 1].
Positive pole welding socket [Item 2].
Polarity selector cable [Item 3].
EURO TORCH welding socket [Item 4].
Remote controller connector [Item 5].

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2.2 REAR PANEL
1 2 3
6
5
4
Cooling unit power feeding connector [Item 1].
• Voltage: 400 Va.c.
• Current Output: 0.8 A
• IP protection rating: IP20 (cap open) / IP66 (cap closed)
Wire feed motor power transformer fuse [Item 2].
• Type: Delayed acting (T)
• Amperage: 1.6 A
• Voltage: 500 V
Welding power source ON/OFF switch [Item 3].
Mains protection ON LED[Item. 4].
This LED illuminates in case of an absence of a phase in the power supply line.
Connector for gas feed hose between the gas cylinder and the power source [Item 5]
Power cable [Item 6].
• Total length (including internal part): 3,5 m
• Number and cross section of wires: 4 x 2,5 mm2
• Type of plug supplied: not supplied

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2.3 MIG/MAG INSTALLATION
DANGER!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
FRONT VIEW REAR VIEW
REMOTE
CONTROL
L1
L2
L3
3P+T
3P4W
 󰀨
2. Connect the power source mains supply cable to the mains socket outlet.
3. Connect the gas hose from the welding gas cylinder to the relative socket.
4. Open the cylinder gas valve.
5. Connect the MIG/MAG torch plug to the EURO TORCH welding socket.
6. Connect the plug of the ground clamp to the welding socket on the basis of the polarity
required.
7. Connect the plug of the polarity selector cable to the welding socket on the basis of the polarity
required.
8. Connect the earth clamp to the workpiece being processed.
9. Set the welding power source ON/OFF switch to “I” (unit powered).
10. Select the following welding mode on the user interface: MIG/MAG
11. Feed the wire through the torch until it protrudes from the tip, pressing button on the unit's
user interface. The insertion speed is 2.0 m/min for 3 seconds, subsequently increasing to 15
m/min. When the button is released wire feed is interrupted. This function produces a slower
feed rate and hence greater precision when inserting the wire when it enters the torch nozzle.
12. Select the torch trigger procedure on the user interface.
13. Open the gas solenoid valve by pressing and releasing the button . 14.
 

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15. Close the gas solenoid valve by pressing and releasing the button.
16. Set the required welding parameter values on the user interface.
i

controller without having to take action on the user interface of the welding power source.
The system is ready to start welding.
POSITIONING THE SPOOL AND THE WIRE IN THE WIRE FEEDER
WARNING!
Mechanical Hazards
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
1. Open the unit side door to gain access to the spool
compartment.
2. Unscrew the cap of the spool holder.
 
4. Fit the spool in the spool holder, ensuring it is located
correctly.

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5. Adjust the spool holder braking system by tightening/
loosening the screw in such a way that the wire feed
force is not excessive and when the spool stops
rotating no excess wire is released.
 
7. Lower the wire feeder pressure devices.
8. Raise the wire feeder pressure arms.
9. Remove the protective cover.

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10. Check that the feed rolls are suitable for the wire
gauge.
• The diameter of the roll groove must be compatible with
the diameter of the welding wire.
• The roll must be of suitable shape in relation to the
composition of the wire material.
• The groove must be "U" shaped for soft materials
(Aluminium and its alloys, CuSi3).
• The groove must be "V" shaped for harder materials
(SG2-SG3, stainless steels).

cored wire.
11. Feed the wire between the wire feeder rolls and insert it
into the MIG/MAG TORCH connector plug.
12. Make sure the wire is located correctly in the roll
grooves.
13. Close the wire feeder pressure arms.
14. Adjust the pressure system so that the arms press
the wire with a force that does not deform it while also
ensuring constant feed rate without slipping.

16. Set the welding power source ON/OFF switch to “I”
(unit switched on).
17. Feed the wire through the torch until it protrudes from
the tip, pressing button on the unit front panel.
18. Close the spool compartment door in the side of the
unit.
2.4 PREPARING FOR MMA WELDING
 󰀨
2. Plug the power cable plug into a mains socket outlet.
3. Choose the electrode based on the type of material and thickness of the workpiece to be
welded.
4. Insert the electrode in the electrode holder.
5. Connect the electrode holder cable to the welding socket based on the polarity requested by
the type of electrode used.
6. Connect the plug of the ground clamp to the welding socket on the basis of the polarity
required.
7. Connect the earth clamp to the workpiece being processed.
DANGER!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
8. Set the welding power source ON/OFF switch to “I” (unit powered).
9. Select the following welding mode on the user interface: MMA

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10. Set the required welding parameter values on the user interface.
i
When the remote controller [RC] is connected and the relative locking screw is tightened,
welding current can be adjusted using the remote controller.
The system is ready to start welding.
FRONT VIEW
(polarity to basic electrode) REAR VIEW
REMOTE
CONTROL
L1
L2
L3
3P+T
3P4W
2.5 PREPARING FOR TIG WELDING
 󰀨
2. Plug the power cable plug into a mains socket outlet.
3. Connect the gas hose from the welding gas cylinder to the rear gas connection.
4. Open the cylinder gas valve.
5. Connect the TIG torch plug to the EURO TORCH welding socket.
6. Choose the electrode based on the type of material and thickness of the workpiece to be
welded.
7. Insert the electrode in the TIG torch.
8. Connect the torch plug to the welding socket on the basis of the polarity required by the type of
electrode in question.
9. Connect the plug of the ground clamp to the welding socket on the basis of the polarity
required.
10. Connect the earth clamp to the workpiece being processed.
DANGER!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.

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11. Set the welding power source ON/OFF switch to “I” (unit powered).
12. Select the following welding mode on the user interface: DC TIG
13. Press the torch trigger with the torch well clear of any metal parts. This serves to open the gas
solenoid valve without striking the welding arc.

15. Set the required welding parameter values on the user interface.
i
When the remote controller [RC] is connected and the relative locking screw is tightened,
welding current can be adjusted using the remote controller.
The system is ready to start welding.
FRONT VIEW
(polarity for tungsten electrode) REAR VIEW
REMOTE
CONTROL
L1
L2
L3
3P+T
3P4W

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3 USER INTERFACE
L1L2 L3 L4 L5L6 L7 L8
L9 L10 L11L12
L13
L14
L15
S1
S2 S3
S4
S5
S6
S7
S8
S9
S10
E1 E2
E3
D1 D2
D3
L16
CODE SYMBOL DESCRIPTION
L1 illumination shows that the following parameter can be set: WIRE FEED RATE
The value appears on the following display: D1
L2
Short-Spray, pulsed and synergic MIG/MAG welding:
illumination shows that the following parameter can be set: WELDING CURRENT
HOLD function (at welding end):
Illuminates to show a value in the following unit of measurement: AMPERES
The value appears on the following display: D1
L3
This LED illuminates to show an anomaly in the operating conditions.
An alarm message appears on the following display: D3
i
§ "7 ALARM MANAGEMENT"
L4 illumination shows that the following parameter can be set: WELDING THICKNESS
The value appears on the following display: D1
L5
Illuminates to show a value in the following unit of measurement: MILLIMETRES
Illuminates together with the following LED:
The value appears on the following display: D1
L6
Illuminates to show a value in the following unit of measurement: METRES PER MINUTE
Illuminates together with the following LED:
The value appears on the following display: D1
L7
Illuminates to show the last voltage and current values measured during welding.
󰀨
settings is changed.
The value appears on the display : D1-D2
L8 
L9 This LED illuminates to show that the following welding mode is selected: TIG LIFT

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CODE SYMBOL DESCRIPTION
L10 This LED illuminates to show that the following welding mode is selected: MANUAL MIG/MAG
- SYNERGIC MIG/MAG
L11 This LED illuminates to show that the following welding mode is selected: PULSED
SYNERGIC MIG/MAG
L12 This LED illuminates to show that the following welding mode is selected: DOUBLE PULSED
SYNERGIC MIG/MAG
L16 This LED illuminates to show that the following welding mode is selected: MMA
L13
Illumination shows that the following function has been activated: 2 stroke procedure
i
§ "8.1 2T MIG/MAG WELDING"

i
§ "8.2 2T SPOT MIG/MAG WELDING"
L14 Illumination shows that the following function has been activated: 4 stroke procedure
i
§ "8.3 4T MIG/MAG WELDING" / § "8.4 4T B-LEVEL MIG/MAG WELDING"
L15
Illumination shows that the following function has been activated: 3 levels procedure
i
§ "8.5 2T - 3 LEVEL MIG/MAG WELDING" / § "8.6 2T SPOT - 3 LEVEL MIG/MAG
WELDING" / § "8.7 4T - 3 LEVEL MIG/MAG WELDING" / § "8.8 4T B-LEVEL - 3 LEVEL
MIG/MAG WELDING".
D1
During illumination of the following LEDs: / /
The display shows the value of the selected parameter.
Welding:󰀨
HOLD function (at welding end): The display shows the last measured current value..
D2
Data setting: The display shows the value, in Volts, of the selected welding voltage.
Parameters/functions setting (Synergic MIG/MAG welding): The display shows the arc
correction value imposed by the operator with respect to the default value of the synergic
curve. Arc correction is performed by means of encoder E2. After 3 seconds the display
󰀨
Welding:󰀨
HOLD function (at welding end): The display shows the last measured voltage value.
D3
SHORT/SPRAY T01
MAT->SG2/SGE Ø:1.2
GAS: 80%Ar/20%CO R4
2
JOB: Fe55 mARIOK1
Data setting: The display shows the various welding menus relative to the selected
processes.
The display shows the selected parameter.
S1
Manual MIG/MAG mode: The button is not active.
Synergic MIG/MAG mode: The button cycles through the following LEDs in sequence,
selecting only one: / /
S2 This button selects the welding mode.
S3 This button selects the torch trigger procedure.
i
§ "8 SELECTION OF THE WELDING MODE AND TORCH TRIGGER PROCEDURE"
S4 The button restores the main menu of display D3, starting from any other page.
The button serves to exit any menu without saving any changes.
S5 The button scrolls the selection made on the menus upwards or to the right.
S6 The button scrolls the selection made on the menus downwards or to the left.
S7 The button selects the various submenus visible in the following display: D3
S8 Press and release:the button opens the JOBs upload menu.
Hold down for 3 seconds: the button opens the JOBs save and delete menu.
S9

the regulator located on the gas cylinder.
i
§ "6.3 GAS FLOW REGULATION"
GAS menu function: Hold down the button for 3 seconds to open the menu.

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CODE SYMBOL DESCRIPTION
S10 This button activates the wire feed to insert it through the MIG/MAG torch.
E1 Data setting: The encoder adjusts the main welding (and synergy) parameter, shown on the
following display: D1
E2
Manual MIG/MAG mode: The encoder adjusts the welding voltage, and the relative value is
shown, in volts, on the following display: D2
Synergic MIG/MAG mode: The encoder is used to correct the factory-set value of the
selected synergic curve, the value of which is shown on the following display: D3
E3
The encoder changes the setting of the selected parameter shown on the following display:
D3
The selected parameter is shown by the following symbol: .

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4 UNIT POWER-UP
Set the welding power source ON/OFF switch to “I” to switch on the unit.
MOTOR MICROPULSE 302
FW: XX.XX.XXX
PROGRAM UPDATE
MICRO PULSE 302
FW: YY.YY.YYY
WELDING MACHINE OK
The message will appear on display: D3
XX.XX.XXX= motor board software version.
YY.YY.YYY= pulsed board software version.
First power-up or power-ups following a RESET procedure
The welding power source sets up for welding with the factory preset values..
Subsequent power-ups
 
󰀨
During power-up all functions are inhibited and the following displays remain blank: D1, D2
5 RESET (LOAD FACTORY SETTINGS)
The reset procedure involves complete restoration of the default values, parameters and memory
settings set in the factory.
The reset procedure is useful in the following cases:
- 󰀩
- 

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5.1 PARTIAL RESET
The reset procedure involves restoration of the parameter values and settings, except the following
settings:
- Settings of the SETUP menu.
- Saved JOBs.
- Set language.
L1L2 L3 L4 L5L6 L7 L8
L9 L10 L11L12
L13
L14
L15
S1
S2 S3
S4
S5
S6
S7
S8
S9
S10
E1 E2
E3
D1 D2
D3
L16
A
A
ACTIVATION
ACTIVATION
BOUTPUT
A
 󰀨
Set the welding power source ON/OFF switch to “I” to switch on the unit.
Simultaneously press the buttons S1 and S10 [ This operation must be
carried out at the same time as the unit is switched on]
PARTIAL RESET SELECT TYPE OF RESET : The message will appear on display: D3
B
Exit without conrmation
- 󰀨
- Set the welding power source ON/OFF switch to “I” to switch on the unit.
Exit with conrmation
- Press S4 to save the setting and quit the menu.
The display D3 will show the message: MEMORY CLEANING
- Wait for the memory clear procedure to terminate.
The unit restarts with the power-up procedure.

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5.2 TOTAL RESET
The reset procedure involves complete restoration of the default values, parameters and memory
settings set in the factory.
All memory locations will be reset and hence all your personal welding settings will be lost!
L1L2 L3 L4 L5L6 L7 L8
L9 L10 L11L12
L13
L14
L15
S1
S2 S3
S4
S5
S6
S7
S8
S9
S10
E1 E2
E3
D1 D2
D3
L16
A
A
ACTIVATION
OUTPUT
SETTING
ACTIVATION
CB
A
 󰀨
Set the welding power source ON/OFF switch to “I” to switch on the unit.
Simultaneously press the buttons S1 and S10 [ This operation must be
carried out at the same time as the unit is switched on]
PARTIAL RESET SELECT TYPE OF RESET : The message will appear on display: D3
BUse the encoder E3 , to select the following “TOTAL RESET ”.
C
Exit without conrmation
- 󰀨
- Set the welding power source ON/OFF switch to “I” to switch on the unit.
Exit with conrmation
- Press S4 to save the setting and quit the menu.
The display D3 will show the message: MEMORY CLEANING
- Wait for the memory clear procedure to terminate.
The unit restarts with the power-up procedure.