Jasic MIG250P User manual

CONTENTS

1. SAFETY ---------------------------------------------------------------------------------------------------------------------------5

2. PRODUCT OVERVIEW -------------------------------------------------------------------------------------------------------6

3. SCHEMATIC BLOCK DIAGRAM-------------------------------------------------------------------------------------------7

4. MAIN WELDER TECHNICAL PARAMETERS--------------------------------------------------------------------------8

5. EXTERNAL CHARACTERISTIC CURVE--------------------------------------------------------------------------------9

6. PANEL STRUCTURE AND DESCRIPTION---------------------------------------------------------------------------10

7. MIG INSTALLTION, DEBUGGING AND OPERATION-------------------------------------------------------------14

8. MMA INSTALLATION, DEBUGGING AND OPERATION ---------------------------------------------------------23

9. DESCRIPTION OF FAULT ALARM AND FAULT CODE ON FRONT PANEL-------------------------------26

10. ATTENTION --------------------------------------------------------------------------------------------------------------------26

11. REPAIR AND MAINTENANCE--------------------------------------------------------------------------------------------27

12. CARRY AND STORAGE----------------------------------------------------------------------------------------------------27

13. FAILURE AND MAINTENANCE------------------------------------------------------------------------------------------28

14. MAIN CIRCUIT SCHEMATIC DIAGRAM AND WIRING DIAGRAM FOR CONTROL WIRE OF WIRE

FEEDER----------------------------------------------------------------------------------------------------------------------------------30

DECLARATION

Hereby we declare that the product is designed according to domestic and international standards so

that it meets relevant standards such as GB/T 15579-1、IEC60974-1、EN60974-1、AS60974-1、UL60974-1.

Relevant design plans and manufacturing technologies of this product are patented.

Free warranty is provided by Shenzhen Jasic Technology Co., Ltd for products purchased for three

years date from being purchased.

Please read this manual carefully before operation.

1. This manual can be revised at any time without prior notice.

2. This manual has been checked carefully, but should you find any inaccuracy, please contact us.

3. This manual was released in May, 2019.

SHENZHEN JASIC TECHNOLOGY CO., LTD

Address: No. 3, Qinglan 1st Road, Pingshan District, Shenzhen Postcode：518118

Tel：0755-29651666 Fax：0755-27364308

Website: Http://www.jasictech.com E-mail：sales@jasictech.com

1. SAFETY

Welding may result in injury to you and others, so please implement protection during welding. See more

details in Safety Protection Guidebook for Operator which meets the requirements to manufacturers on

accident prevention.

Operate this equipment by trained professional only!

·Use welding labor protection supplies with approval of safety

supervisory authority!

·Operators must be the special workers with valid work permits of “Metal

Welding (Gas Cutting) Operation”!

·Do not maintain and repair welder with power.

Electric shock-may result in serious injury or even death!

·Install grounding device according to application standard.

·Do not touch live parts with naked skin, wet gloves or wet clothes.

·Be sure you are insulated from ground and workpiece.

·Confirm the safety of your working position.

Smoke-may be harmful to your health!

·Keep your head away from the smoke to avoid inhalation of waste gas

in welding.

·Keep the working environment well ventilated with exhaust or ventilation

equipment when welding.

Arc radiation-may hurt your eyes and burn your skin!

·Use proper welding mask and wear protective clothing to protect your

eyes and body.

·Use proper mask or curtain to protect onlooker from being injured.

Improper use and operation may result in fire or explosion

·Welding spark may result in fire, so please make ensure there are no

inflammables near the welding position, and pay attention to fire

safety.

·Ensure there is fire extinguisher nearby, and make sure someone has

been trained to operate the fire extinguisher.

·Do not weld closed container.

·Do not use this machine for pipe thawing.

Hot workpiece can cause severe scald.

·Do not touch hot workpiece with bare hands.

·Cool the welding torch for a while after continuously working.

Excessive noise does great harm to people’s hearing.

·Wear ear covers or other hearing protectors when welding.

·Give warning to onlooker that noise may be potentially hazardous to

hearing.

Magnetic field can make cardiac pacemaker a bit wonky.

·People with cardiac pacemaker should stay away from the welding spot

without first talking to a doctor.

Moving parts may injure your body.

·Please keep away from moving parts (like fan).

·Each door, panel, cover, baffle plate, and protective device the like

should be closed and located correctly.

Failure-seek professional support when trouble strikes.

·When trouble strikes in installation and operation, please inspect

according to related contents in this manual.

·If you still cannot understand fully, or you still cannot solve the problem,

please contact the dealer or the service center of JASIC to obtain

professional support.

2. PRODUCT OVERVIEW

2.1. Advanced IGBT inverter technology

2.1.1. Inverting frequency of 26.5KHz greatly reduces the volume and weight of the welder.

2.1.2. Great reduction in copper and iron loss obviously enhances the welding efficiency and energy saving

effect.

2.1.3. Switching frequency is beyond audiorange, which almost eliminates noise pollution.

2.2. Leading control mode

2.2.1. Closed loop feedback control, stable output voltage, strong ability to resist network voltage fluctuation.

2.2.2. Unique control circuit of welding dynamic characteristic, stable welding arc, excellent spot welding, less

spatter, nice shape, high welding efficiency.

2.2.3. Molten globule can be removed after welding. With high no-load voltage and slow wire feeding on

striking arc, arc striking success rate can be increased.

2.3. Perfect function design

2.3.1. With synergic MIG, welding parameters can be automatically selected based on wire feed speed.

2.3.2. Four welding modes include MMA, lift TIG, DC MIG/MAG, digital control and humanized operation

panel is available.

2.3.3. Functions such as accurate preset current/voltage, 2T/4T operation mode, synergic, gas selection, wire

diameter selection, electronic inductance adjustment, and on-demand fan and so on are available.

2.3.4. Effective protective functions including over-current, overload, current sharing, etc are available.

3. SCHEMATIC BLOCK DIAGRAM

Single-phase rectifying

Filter board

Auxiliary power

Full-bridge

inverter

Rectifying output

ARM

processor

Single-phase AC power

Panel display

Voltage

Current

Drive circuit of

wire feeder

Mutual inductor

PWM

流环

Drive board

4. MAIN WELDER TECHNICAL PARAMETERS

Model

MIG250P(N24901)

Input

Input power

AC230V single-phase ±15% 50/60Hz

Rated input capacity

9.13KVA

Power factor

0.76

Output

Rated no-load voltage

75V

Rated maximum output

MMA 250A/30V

Lift TIG 250/20V

MIG 250A/26.5V

Rated duty cycle

40%@AC230V Single-phase

Welding voltage

13.5V～36V@AC230V Single-phase

Welding current

MMA 15A/20.6V～250A/30V

Lift TIG 15A/10.6V～250A/20V

MIG/pulsed MIG 40A/16V～250A/26.5V

Output characteristic

MIG/MAG: CV MMA: CC

Ambient

Operation temperature

-10～+40℃

Storage temperature

-25～+55℃

Protection class

IP21S

Insulation class

Cooling method

Air cooling

Others

Rated efficiency

82%

Dimension of bare welding

source

895*445*760 mm

Dimension of packaged

welding source

1010*585*840 mm

Weight of bare welding

source

49.7kg

Weight of complete welding

source

64.4kg

5. EXTERNAL CHARACTERISTIC CURVE

External characteristic for MMA External characteristic for MIG/MAG

Welding current I/A

Welding

voltage

U/V

Welding

voltage

U/V

6. PANEL STRUCTURE AND DESCRIPTION

6.1. Panel structure and

description

Picture 1 Front panel

No.

Component

name

Component function

Segment display

Display welding current and

welding function

Adjusting knob

Welding function selection

and welding parameters

setting

Gas check

button

Welder gas check

Welding mode

button

MMA, TIG, MIG and pulse

MIG selection

Welding material

button

Carbon steel/stainless steel/

aluminum-silicon/

aluminum-magnesium

selection

Euro output

connector

Euro torch connector for

MIG

Polarity adapter

Euro output socket for

polarity selection

Segment display

Display welding voltage and

welding parameters setting

Adjusting knob

Setting for welding

parameters and board

thickness

Synergic button

Synergic/separated

selection

Welding function

button

Parameters setting for

pre-flow, post-flow, striking

arc, stopping arc, upslope

and downslope

Welding method

button

Spot/2T/4T selection

Wire diameter

button

Wire diameter selection

Welder output

socket

“+ ”output

Welder output

socket

“-”output

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