Jasic Mig 350p User manual

MODEL: MIG 350P (N316), MIG 400P (N317)

INVERTER WELDER

OPERATOR’S MANUAL

L2040A S C -A4

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OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

TABLE OF CONTENTS

1. SAFETY ................................................................................................................................................................... - 3 -

2. GENERAL DESCRIPTION .......................................................................................................................................... - 4 -

2.1 Model coding .................................................................................................................................................. - 4 -

2.2 Product characteristics ............................................................................................................................. - 4 -

3. FUNCTIONS AND TECHNICAL PARAMETERS .............................................................................................................. - 5 -

3.1 Functions ........................................................................................................................................................ - 5 -

3.2 Technical parameters ................................................................................................................................... - 6 -

3.3 Functional parameters ................................................................................................................................. - 5 -

3.4 Product characteristics.............................................................................................................................. - 6 -

4. PANEL STRUCTURE AND SYMBOL DESCRIPTION ...................................................................................................... - 8 -

4.1 Panel structure ............................................................................................................................................ - 8 -

4.2 Symbol description ....................................................................................................................................... - 9 -

5. CONTROL PANEL .............................................................................. - 9 -

5.1 Power supply monitoring panel ................................................................................................................ - 10 -

5.2 Details of the functional zones on the power supply monitoring panel .......................................- 11 -

6. OPERATION OF CONTROL PANELS ............................................................ - 15 -

6.1 General operation steps for the control panel on the power supply part(recommended) ..... - 23 -

6.2 Parameters in MMA ...................................................................... - 23 -

6.3 Parameters in standard MIG/MAG ......................................................... - 21 -

6.4 Parameters in pulsed MIG/MAG ........................................................... - 23 -

6.5 Parameters in double pulse MIG/MAG ..................................................... - 21 -

6.6 Operation mode selecting ............................................................... - 23 -

7. CAUTIONS AND MAINTENANCE ............................................................................................................................... - 15 -

7.1 Cautions ........................................................................................................................................................ - 21 -

7.2 Maintenance .................................................................................................................................................. - 23 -

8. TROUBLESHOOTING ................................................................................................................................................ - 24 -

9. WIRING DIAGRAM OF THE MACHINE ................................................................................................................... - 26 -

9.1 Wiring diagram of the machine (see APPENDIX).................................................................................... - 26 -

10. ABOUT THIS MANUAL .......................................................................................................................................... - 26 -

APPENDIX: .................................................................................. - 26 -

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

- 2 -

DECLARATION

SHENZHEN JASIC TECHNOLOGY CO., LTD.

solemnly promises: This product is manufactured according

to relevant standards of China and relevant international standards, and meets safety standards

such as GB15579.1, IEC 60974-1, EN 60974.1, AS 60974.1 and UL 60974.1

. Relevant design plans and

manufacturing technologies of this product are patented.

Operate after reading this manual carefully.

1. JASIC has the right to modify this manual at any time without prior notice.

Though contents in this manual have been carefully checked, inaccuracies might have occurred.

For any inaccuracy, please contact us.

3. This manual was released in Dec, 2015.

SHENZHEN JASIC TECHNOLOGY CO., LTD.

Address: No. 3, Qinglan 1st Road, Pingshan District, Shenzhen, Guangdong, China

Postcode: 518118

Tel: 0755-29651666 Fax: 0755-27364108

Website: http://www.jasictech.com E-mail: [email protected]

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

1. SAFETY

Welding is dangerous, and may cause damage to you and others, so take good protection when welding.

For details, please refer to the operator safety guidelines in conformity with the accident prevention

requirements of the manufacturer.

Professional training is needed before operating the machine.



Use labor protection welding supplies authorized by national

security supervision department.

 Operators should be with valid

work permits for metal welding

(cutting) operations.

 Cut off power before maintenance or repair.

Electric shock—may lead to serious injury or even death.

 Install earth device according to the application criteria.



Never touch the live parts when skin bared or wearing wet

gloves/clothes.

 Make sure that you are insulated from the ground and workpiece.

 Make sure that your working position is safe.

Smoke & gas—may be harmful to health.



Keep your head away from smoke and gas to avoid inhalation of

exhaust gas from welding.

 Keep the working environment wel

l ventilated with exhaust or

ventilation equipment when welding.

Arc radiation—may damage eyes or burn skin.



Wear suitable welding masks and protective clothing to protect

your eyes and body.

 Use suitable masks or screens to protect spectators from harm.

Improper operation may cause fire or explosion.



Welding sparks may result in a fire, so please make sure no

combustible materials nearby and pay attention to fire hazard.

 Have a fire exti

nguisher nearby, and have a trained person to

use it.

 Airtight container welding is forbidden

 Do not use this machine for pipe thawing.

Hot workpiece may cause severe scalding.

 Do not touch hot workpiece with bare hands.

 Cooling is needed during continuous use of the welding torch.

Noise may be harmful to people’s hearing.

 Wear approved ear protection when welding.

 Warn spectators that noise may be harmful to their hearing.

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- 4 -

Magnetic fields affect cardiac pacemaker.



Pacemaker users should be away from the welding spot before

medical consultation.

Moving parts may lead to personal injury.

 Keep yourself away from moving parts such as fan.



All doors, panels, covers and other protective devices should

be closed during operation.

Please seek professional help when encountering machine failure.

 Consult the relevant contents of this manual if

you encounter

any difficulties in installation and operation.



Contact the service center of your supplier to seek professional

help if you still can not fully understand after reading the

manual or still can not solve the problem according to the

manual.

2. GENERAL DESCRIPTION

2.1 Model coding

1) Model:MIG350P(N316) MIG400P(N317)

2) Coding description: “MIG” refers to MIG/MAG welding;“350/400” refers to the rated welding

current;“P” refers to pulse.

2.2 Product characteristics

The main circuit of this product adopts full-bridge converting technology based on the traditional

PWM (pulse width modulation) and current control mode, and it adopts insulated gate bipolar transistor

(IGBT) as its switching device. By adopting advanced soft switching technology, the switching loss

of the switching device is greatly reduced, the product efficiency is increased, and consequently the

reliability and stability of this machine is improved. By adopting internationally advanced DSP digital

technology and with abundant functions and good performance, this machine is an all-digital inverter

welder with pulse MIG/MAG and standard MIG/MAG. When compared with the traditional welding machine,

it mainly has the following characteristics.

1) Abundant functions: This product has many welding modes available, such as MIG/MAG, pulse MIG/MAG

and double-pulse MIG/MAG, etc. At the same time, there are many optional operation modes under

each welding mode, such as spot welding, 2T and 4T, etc. Welding wires of different diameters between

0.8mm and 1.6mm are all applicable to this product according to different capacity. Users may choose

welding wires of different materials and different diameters to weld different metals and alloys

according to different welding requirements. In addition, parameters such as welding current,

welding voltage, ignition current, crater filling current, ignition time, crater filling time and

pulse frequency can be set via the human-computer interaction interface. Besides, current, voltage

and wire feed speed can be calibrated by software for this machine.

2) High precision and good consistency: The composition characteristic of the traditional welding

machines determines that their performance completely depends on the parameters of their components.

That is to say, the inconsistency in the parameters of components directly leads to the

inconsistency in the performance of the welding machines. However, it cannot be guaranteed that

the components made by any manufacturers are completely consistent in their parameters. Besides,

highly precise control cannot be obtained due to non-ideal features of the operational amplifier.

Therefore, even for the welding machines of the same brand, they often differ from each other.

In addition, welding performance of the machine may change to some extent, since parameters of

the components may vary according to the environment such as temperature and humidity, etc.

This product adopts digital circuit, for which most of the parameters are set via software, and

it is insensitive to the change of the parameters of the components. Therefore, the consistency

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

and stability of digital welding machine is better than that of traditional welding machine.

3) High reliability: Overheating protection, overcurrent protection and input

undervoltage/overvoltage protection are all available for this product, which contributes a lot

to the reliability improvement of this product, and meanwhile facilitates the maintenance and

repair of this product.

4) Excellent welding performance: In order to improve the welding performance to meet the higher

requirements of welding process, experts at home and abroad have done a lot of work and put forward

many excellent mathematical control models. However, such complicated mathematical models are very

difficult to implement on the traditional analog welding machines. Instead, they are well applied

in the digital welding machines.

5) Convenient optimization and upgrade of welding performance: With the development and improvement

of the welding process, it is certainly required that our welding machine has more excellent welding

performance. And all welding performance of this product is achieved by software. Therefore, the

welding performance of this welding machine can be optimized and upgraded by upgrading the software

without changing any hardware circuits.

6) User-friendly design: Differences in user and using occasion are taken into consideration when

designing this product, so as to meet the personalized requirements of users to the largest extent.

For example, this product provides a variety of welding torch operating modes and user-defined

modes. Besides, this product adopts synergic design. That is to say, users only need to adjust

one of the parameters, and other related parameters would change respectively to achieve the optimal

matching. It is unnecessary to set each parameter independently. For example, when the user changes

the welding current, parameters such as welding voltage, wire feed speed and base metal thickness

would change respectively. Of course, users can make fine-tuning on certain parameters such as

welding voltage to adapt to their welding habits.

7) Energy-saving and small size: This machine adopts advanced IGBT inverter technology, which reduces

the volume and weight of the welding source and the whole machine, improves the efficiency and

power factor of the power supply, and brings significant energy saving effect.

3. FUNCTIONS AND TECHNICAL PARAMETERS

3.1 Functions

3.1.1 Welding modes available

1) DC MIG/MAG welding

2) Pulse MIG/MAG welding

3) Double-pulse MIG/MAG welding

4) MMA welding

3.1.2 Base metal optional

1) Carbon steel (Steel)

2) Stainless steel (CrNi)

3) Aluminum silicon alloy(AlSi 5)

4) Aluminum magnesium alloy (AlMg 5)

5) Pure aluminum (Al99.5)

3.1.3 Gas optional

1) 100% CO2

2) 80% Ar＋20% CO2

3) 90% Ar＋5% CO2＋5% O2

4) 98% Ar＋2% O2

5) 100% Ar

3.1.4 Welding wire optional

1) Φ0.8 (solid wire)

2) Φ1.0 (solid wire or flux-cored wire)

3) Φ1.2 (solid wire or flux-cored wire)

4) Φ1.6 (solid wire or flux-cored wire)

5) Flux cored

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3.1.5 User interface

1) Graphical coordinate panel

2) Single-knob stepless digital adjustment

3) Double 3-digit display

3.2 Technical parameters

MODEL MIG350P(N316) MIG400P(N317)

Input voltage 3-phase 380V±15% (50/60Hz) 3-phase 380V±15% (50/60Hz)

Recommended fuse capacity 40A 50A

Rated output 350A/34V 400A/36V

Rated no-load voltage 70V 70V

Rated no-load current ＜1A ＜1A

Rated duty cycle (40℃) 60% 60%

Power factor COSφ≥0.85 COSφ≥0.85

Efficiency η≥85% η≥85%

Insulation class F F

Protection class IP21S IP21S

Welding current range 10-350A 10-400A

Wire feed speed range 1.0-18.0m/min 1.0-18.0m/min

Welding voltage range 12.0-39.0V 12.0-39.0V

Torch connection European type European type

Maximum diameter of wire spool

S200/S300, 300mm S200/S300, 300mm

Wire diameter 0.8-1.6mm 0.8-1.6mm

3.3 Functional parameters

MMA MIG350P(N316) MIG400P(N317)

Welding current range 10-350A 10-400A

Arc force current range 0-99（A/ms, absolute maximum:

250A

）

0-99（A/ms, absolute maximum:

250A

）

Arc ignition current range 10-350A 10-400A

Arc ignition time range 0-0.99s 0-0.99s

Arc breaking voltage range 40.0-80.0V 40.0-80.0V

MIG/MAG MIG350P(N316) MIG400P(N317)

Pre-flow time 0-5.0s 0-5.0s

Post-flow time 0-9.9s 0-9.9s

Operation mode 4 modes 4 modes

Wire feed speed range 1.0-18.0 m/min 1.0-18.0 m/min

Welding current range 20-350A 20-400A

Base metal thickness range 0.5-20.0mm 0.5-20.0mm

Welding voltage range 12.0-40.0V 12.0-40.0V

Arc force range -15-+15 -15-+15

LF pulse frequency range 0.5-5.0Hz 0.5-5.0Hz

LF pulse duration ratio range

10-90% 10-90%

Upslope time 0.1-9.9s 0.1-9.9s

Downslope time 0.1-9.9s 0.1-9.9s

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

3.4 External characteristic

This machine is with constant voltage external characteristic in pulsed welding and MIG/MAG welding,

while it is with constant current external characteristic in MMA welding.

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4. PANEL STRUCTURE AND SYMBOL DESCRIPTION

4.1 Panel structure（take MIG350P(N316) for example）

1) Power supply monitoring panel

2) Front panel

3) Parameter adjustment knob

4) Power output terminal “+”

5) Power output terminal “-”

6) Interface for the control cable

7) Back panel

8) Air switch

9) Fuse

10)

Socket for CO2 heater (applicable

to heater of 36V/120W)

11) Interface for the control cable

12) Water cooling/Air cooling switch

13) Power output terminal “+”

14) Power input cable

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

4.2 Symbol description

Table 4-1: Symbols on the front panel

Symbol

Description Output terminal “-” of the welding

machine

Output terminal “+” of the welding

machine

Table 4-2: Symbols on the back panel

Symbol AC36V 1 0

Description Power source of the

heater

Input cable of the

welding machine Breaker “ON”

Breaker “OFF”

Table 4-3: Symbols on the nameplate

Symbol Description Symbol Description

U0 Rated no-load voltage

Gas shielded arc welding

U1 Rated input voltage MMA

U2 Conventional load voltage Three-phase 50/60Hz input

I1max Maximum rated input current

DC output

I1eff Maximum effective input

current Symbol for inverter welder

I2 Rated welding current X Duty cycle

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5. CONTROL PANEL

5.1 Power supply monitoring panel（take MIG400P(N317) for example）

Figure 5.1: Sketch map of the power supply monitoring panel

1. Welding mode selecting zone;

2. Current column parameters selecting zone;

3. Current column parameters display window;

4. Abnormity indicator;

5. Voltage column parameters display window;

6. Voltage column parameters selecting zone;

7. Welding process parameters selecting zone;

8. Operation mode selecting zone;

9. Gas-check zone;

10. Channel key;

11. Base metal selecting zone;

12. Gas selecting zone;

13. Wire diameter selecting zone;

14. Parameter adjustment knob.

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

5.2 Details of the functional zones on the power supply monitoring panel

Figure 5.2: Welding mode selecting zone

It contains components such as welding mode

LEDs and selecting key.

There are 4 welding modes, namely standard

MIG/MAG, pulsed MIG/MAG, Double pulse MIG/MAG

and MMA. Users can select the desired welding

mode by pressing the selecting key, and the

corresponding LED will be on when a certain

welding mode is selected.

Note: The welding mode LED blinks during

welding (when there is welding current output).

Figure 5.3: Base metal selecting zone

It contains components such as base metal LEDs

and selecting key.

Base metal includes carbon steel, stainless

steel, aluminum alloy, aluminum magnesium alloy,

pure aluminum . Users can select the desired base

metal by pressing the selecting key, and the

corresponding LED will be on when a certain kind

of base metal is selected.

Note: There is no such function in MMA .

Figure 5.4: Gas selecting zone

It contains components such as gas LEDs and

selecting key.

Gas includes 100% CO2, 80% Ar+20% CO2, 90% Ar+5%

CO2+5% O2, 98% Ar+2% CO2 and 100% Ar . Users can

select the desired shield gas by pressing the

selecting key, and the corresponding LED will

be on when a certain kind of shield gas is

selected.

Note:There is no such function in MMA .

Figure 5.5: Wire diameter selecting zone

It contains components such as welding wire LEDs

and selecting key.

Welding wire includes solid wire of Φ0.8, Φ1.0,

Φ1.2 andΦ1.6, flux-cored wire ofΦ1.0, Φ1.2

and Φ1.6 and Flux cored. Users can select the

desired wire by pressing the selecting key, and

the corresponding LED will be on when a certain

kind of wire is selected. The flux-cored wire LED

on indicates that flux-cored wire is selected,

while the LED off indicates that solid wire is

selected.

Note: There is no such function in MMA .

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

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Figure 5.6: Welding process parameters selecting zone

1.Pre-flow time; 2. Initial parameters (speed, current and voltage); 3. Upslope time; 4. Peak

rameters (time, current, speed, thickness, arc characteristic, voltage, percentage and

frequency); 5.Base parameters (current, speed and voltage); 6. Downslope time; 7. Crater filling

parameters (current, speed and voltage); 8. Post-flow time

It contains components such as process parameters LED and right selecting key. Process parameters

include preposed parameters (such as pre-flow time), initial parameters (such as speed, current

and voltage), upslope parameters (such as time and pitch ratio), peak parameters (such as time,

current, speed, thickness, arc characteristic, voltage, proportion and frequency), base

parameters (such as current, speed and voltage), downslope parameters (such as time and pitch

ratio), crater parameters (current, speed and voltage) and postposed parameters (such as post-

flow

time). Users can select the desired process parameters by pressing the right selecting key, and

the corresponding LED will be on when a certain segment is selected. There are some parameters

(1~8) in some segments, while no parameters in other segments. Only segments with one or more

parameters can be selected, and those segments without parameters cannot be selected. To select

the parameters to be ultimately displayed or adjusted, users need to make a second choice through

the current column or voltage column.

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

Figure 5.7: Current column parameters selecting

zone

9.Current; 10. Wire feed speed; 11. Base metal

thickness; 12. Arc characteristic

It contains components such as current column

parameters display meter, LEDs and selecting

key. The current column parameters include 4

parameters, namely current (A), wire feed speed

(m/min), thickness of base metal (mm) and arc

characteristic (-/+). Current column

parameters display meter can display system

information, actual welding current and the

contents of the column parameters. Users can

select the desired parameters by pressing the

selecting key, and the corresponding LED will

be on when a certain parameter is selected.

Meanwhile, the contents of the selected

parameter will be displayed on the meter.

Note: The meter will display the actual current

when there is welding current output. To modify

a parameter, users should make corresponding

LED blink by pressing the selecting key.

Figure 5.8: Voltage column parameters selecting

zone

13.Voltage; 14.Time; 15.Pulse duration ratio;

16. Frequency

It contains components such as voltage column

parameters display meter, LEDs and selecting

key. The voltage column parameters include 4

parameters, namely voltage (V), time (s),

proportion (%) and frequency (Hz). Voltage

column parameters display meter can display

system information, actual welding voltage and

the contents of the column parameters. Users can

select the desired parameters by pressing the

selecting key, and the corresponding LED will

be on when a certain parameter is selected.

Meanwhile, the contents of the selected

parameter will be displayed on the meter.

Note: The meter will display the actual voltage

when the main power circuit is connected. To

modify a parameter, users should make

corresponding LED blink by pressing the

selecting key.

Figure 5.9: Operation mode selecting zone

It contains components such as operation mode

LEDs and selecting key.

There are 4 operation modes, namely spot

welding, 2T, 4T and programmed 4T . Users can

select the desired operation mode by pressing

the selecting key, and the corresponding LED

will be on when a certain operation mode is

selected.

Note: There is no such function in MMA.

Figure 5.10: Parameter adjustment knob

It contains components such as parameter

control knob and adjustment indicator. All

welding parameters are set by adjusting this

knob. The adjustment indicator tells users that

the knob is effective only when the

corresponding parameter LED in the current

column or voltage column blinks.

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Figure 5.11: Gas-check zone

It contains components such as gas-check key and gas flow LED.

When pressing the gas-check key once, the gas path will be connected, and when pressing the key

again, the gas path will

be disconnected. The gas flow LED indicates the connection state of the

gas path.

Note: Users can stop gas flow by pushing the torch trigger in the gas-check state.

Figure 5.12: Channel key

In order to facilitate the simple and effective management o

n welding instructions, the machine

is equipped with 64 channels. A channel is an aggregate or a sequence of all parameters in a welding

instruction. A welding instruction includes parameters such as welding mode, base metal type,

gas type, wire type, operation mode, pre-flow time, initial current, initial speed, initial

voltage, upslope time, peak current, peak speed, thickness of base metal, arc characteristic,

peak voltage, spot welding time, downslope time, crater current, crater speed, crater voltage

and post-flow time. All these parameters constitute a process data channel or a channel for short.

Channels are indicated with channel numbers. Working channel means the channel being used

currently.

1)To access the channel management mode: Press the channel key in standby mode, the channel LED

will be on, and the channel management mode can be accessed.

To view and change the working channel number: The machine will work in a certain working channel

(the working channel when the machine is shut down last time ) once it

is powered on, and users

can view the channel number, which will be displayed on the voltage column parameters display

meter, by pressing the channel key. And at this time, users can change the working channel number

by adjusting the knob.

3)To exit the channel management mode: Press the channel key or any other key, the channel LED

will be off, and the channel management mode will be exited.

4)To store parameters in channel: Parameters of the working channel will be saved into the

parameter storage automatically after welding, and users do not need to save it manually.

Note: Parameters will not be saved if users don’t weld after modifying.

5) Press channel key to start the machine, with front panel indicator and display lighting up,

which means all welding parameters are in default setting. Power off the machine to exit. Restart

the machine and operation can be carried out.

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

6. OPERATION OF CONTROL PANELS

6.1 General operation steps for the control panel on the power supply part(recommended)

After the machine is powered on, the system will be under the functional state when the machine is

shut down last time. If users want to continue the original welding task, do not operate the control

panel but just carry out welding directly. However, if users want to change the welding task or welding

instruction, they should operate the control panel firstly. The recommended operation steps for the

control panel on the power supply part are as below.

1) Select the welding mode

Select the desired welding mode by pressing the selecting key in the welding mode selecting zone (Figure

5.2) if necessary.

2) Select the base metal type

Select the desired base metal type by pressing the selecting key in the base metal selecting zone (Figure

5.3) if necessary.

3) Select the gas type

Select the desired gas type by pressing the selecting key in the gas selecting zone (Figure 5.4) if

necessary.

4) Select the welding wire type

Select the desired welding wire type by pressing the selecting key in the wire selecting zone (Figure

5.5) if necessary.

5) Select the operation mode

Select the desired operation mode by pressing the selecting key in the operation mode selecting zone

(Figure 5.9) if necessary.

6) Select the parameter to be viewed or modified

If necessary, select the segment, to which the parameter to be viewed belongs, by pressing the selecting

key in the welding process parameters selecting zone (Figure 5.6), and then select this parameter by

pressing the selecting key in the current column parameters selecting zone (Figure 5.7) or voltage

column parameters selecting zone (Figure 5.8), and the current value of this parameter will be displayed

on the current column or voltage column parameters display meter. Users can modify this parameter by

adjusting the control knob (Figure 5.10) when the corresponding parameter LED blinks

6.2 Parameters in MMA

There are 5 adjustable parameters in MMA welding, namely arc ignition current, arc ignition time, arc

current, arc characteristic (arc force) and arc breaking voltage. These parameters can be operated

only through the control panel on the power supply part. Besides, Select the desired welding mode before

any operation on parameters.

Arc ignition Arc burning

Short-circuit

transfer Arc burning

Welding current

Welding voltage

Time

t1 t3

t2 t2

Standby

Figure 6.1 Welding current and welding voltage in

MMA

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Combined with Figure 6.1, parameters in MMA are described as below.

1) Arc ignition current (I1)

It is located at “initial segment-current column-current (A)”. It indicates the current during arc

ignition period, and can be adjusted within the full range.

2) Arc ignition time (t1)

It is located at “initial segment-voltage column-time (s)”, and it indicates the time arc ignition

period lasts.

Arc current (I2)

It is located at “peak segment-current column-current (A)”, and users can set it according to their

own technical requirements.

3) Arc characteristic (arc force)

It is located at “peak segment-current column-arc characteristic (-/+)”. It determines the rising

rate of I3, and it should be set according to the electrode diameter, preset current and the technical

requirement. If the arc force is big, the molten drop can be transferred quickly, and electrode sticking

seldom occurs. However, too big arc force may lead to excessive spatter. If the arc force is small,

there will be little spatter, and the weld bead will be shaped well. However, too small arc force may

lead to soft arc and electrode sticking. Therefore, the arc force should be increased when welding

with thick electrode under low current. In general welding, the arc force may be set at 20~70.

Simple TIG welding: Set the arc characteristic (arc force) at 0 in MMA welding, and simple TIG welding

can be carried out. Simple TIG welding is a kind of DC TIG welding achieved by users in MMA welding

through adding necessary gas path equipment connected to the welding machine and igniting arc by

scraping the electrode. Various TIG operation modes in general TIG welding are unavailable in simple

TIG welding.

4) Arc breaking voltage (U1)

It is located at “peak segment-voltage column-voltage (V)”, and it is used for setting the arc breaking

voltage during welding. This parameter is specially designed to meet the requirement in HF intermittent

welding, and its resolution is 0.1V. The arc breaking voltage indicates the maximum allowable arc

voltage during welding, that is to say, welding can be continued when the arc voltage is lower than

U1, or else welding will stop immediately. Generally, the arc breaking voltage should be higher than

40.0V.



Operation tips

Arc ignition mode in MMA (arc force≠0)



Low current arc ignition: It can be also called lift/soft arc ignition. Set the arc ignition time

to be a value other than 0, and the arc ignition current (I1) to be a value lower than I2 and

the machine will enter into low current arc ignition mode.

Touch the workpiece with the electrode,

and lift the electrode to the normal position to weld after arc is ignited.



High current arc ignition: It can be also called contact/hot start arc ignition. Set the arc

ignition time to be a value other than 0, and the arc ignition current (I1) to be a value not

lower than I2 and the machine will enter into high current arc ignition mode. Touch the workpiece

with the electrode, and normal welding can be carried out without lifting the electrode.

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

6.3 Parameters in standard MIG/MAG

There are 16 adjustable parameters in standard MIG/MAG welding, namely pre-flow time, initial current,

initial speed, initial voltage, upslope time, peak current, peak speed, peak voltage, thickness of

base metal, arc characteristic, spot welding time, downslope time, crater current, crater speed, crater

voltage and post-flow time. 9 parameters of them, namely peak current, peak speed, peak voltage,

thickness of base metal, arc characteristic, spot welding time, crater current, crater speed, crater

voltage can be operated either through the control panel on the power supply part or through the control

panel on the wire feeder part, and other parameters can be operated only through the control panel

on the power supply part. Besides, Select the desired welding mode, base metal type, gas type, welding

wire type and operation mode before any operation on parameters.

1) Pre-flow time

It is located at “preposed segment-voltage column-time (s)”, and users can set it according to their

own technical requirements.

2) Initial current

It is located at “initial segment-current column-current (A)”, and it varies with the change of the

initial speed. Therefore, it is unnecessary to set this parameter when the initial speed is set properly.

3) Initial speed

It is located at “initial segment-current column-wire feed speed (m/min)”, and it varies with the

change of the initial current. Therefore, it is unnecessary to set this parameter when the initial

current is set properly.

4) Initial voltage

It is located at “initial segment-voltage column-voltage (V)”, and it varies with the change of the

initial current or initial speed. Beside, this parameter can be adjusted within a certain range.

5) Upslope time

It is located at “upslope segment-voltage column-time (s)”, and it makes sense only in programmed

4T mode.

6) Peak current

It is located at “peak segment-current column-current (A)”. Since peak current, peak speed and

thickness of base metal are interacting parameters, if one of them varies, the other two will be changed.

Generally, users may choose one of the three to operate according to their own technical requirements

or operation habits, leaving the other two parameters out of consideration.

7) Peak speed

It is located at “peak segment-current column-wire feed speed (m/min)”. For the relative description,

see the contents of peak current above for reference.

8) Thickness of base metal

It is located at “peak segment-current column-thickness of base metal (mm)”. For the relative

description, see the contents of peak current above for reference.

9) Peak voltage

It is located at “peak segment-voltage column-voltage (V)”, and it varies with the change of the

peak current and its interacting parameters. Beside, this parameter can be adjusted independently

within a certain range.

10) Arc characteristic

It is located at “peak segment-current column-arc characteristic (-/+)”, and the recommended value

of arc characteristic is 0. If the arc force is big, the arc will be hard and there will be excessive

spatter. If the arc force is small, the arc will be soft and there will be little spatter. This parameter

Initial

Current/Voltage

Time

Upslope Peak Downslope Crater

Figure 6.2 Welding current and welding voltage in general MIG/MAG

OPERATOR’S MANUAL · MIG/MAG PULSE SERIES

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is especially important when welding under low current. Users may adjust it according to their own

technical requirements or operation habits.

Spot welding time

It is located at “peak segment-voltage column-time (s)”, and it makes sense only in spot welding.

11) Downslope time

It is located at “downslope segment-voltage column-time (s)”. The craters can be filled by adjusting

this parameter properly in non programmed 4T mode.

12) Crater current

It is located at “crater segment-current column-current (A)”, and it varies with the change of the

crater speed. Therefore, it is unnecessary to set this parameter when the crater speed is set properly.

13) Crater speed

It is located at “crater segment-current column-wire feed speed (m/min)”, and it varies with the

change of the crater current. Therefore, it is unnecessary to set this parameter when the crater current

is set properly.

14) Crater voltage

It is located at “crater segment-voltage column-voltage (V)”, and it varies with the change of the

crater current or crater speed. Beside, this parameter can be adjusted independently within a certain

range.

15) Post-flow time

It is located at “postposed segment-voltage column-time (s)”, and users can set it according to their

own technical requirements.

6.4 Parameters in pulsed MIG/MAG

There are 16 adjustable parameters in pulsed MIG/MAG welding, namely pre-flow time, initial current,