.Welding on a single workpiece using multiple welding power sources can cause arc blow and arc impedance to develop or intensify.

5-4. Using Multiple Welding Power Sources

 

1

Welding Power Source

 

2

Electrode Cable

 

3

Feeder Cable

 

4

Work Cable

1

5

Voltage Sensing Lead

 

 

 

6

Wire Feeder

 

7

Workpiece

 

Each welding power source should

 

have a separate work cable connection

3

to the workpiece. Do not stack or join

work cables together at the workpiece.

2

This is very important for pulse welding

applications.

 

 

It is important to connect the voltage

6

sensing lead as near to the weld as

 

possible, but not in the return current

 

path.

 

Connect voltage sensing lead at the end

 

of the weld joint.

 

The direction of the welding path should

 

be away from the work cable

4

connections.

Connect work clamp at the beginning of

 

 

the weld joint.

5

Each welding gun should have its own

source of shielding gas. Use a separate

 

shielding gas regulator and shielding

7

gas connection for each welding gun.

Arc blow is the deflection of a welding

1

arc from its normal path due to magnetic

 

forces. It will adversely affect the

 

appearance of a weld, cause excessive

 

spatter, and impair the quality of a weld.

 

Arc blow occurs primarily during the

 

welding of steel or ferromagnetic

5

metals. Weld current will take the path of

Gun

least resistance, but not always the

most direct path through the workpiece

Travel

to the work lead connection. The most

3

intense magnet force will be around the

 

2

arc due to a difference in resistance for

the magnetic path in the base metal.

6

The work clamp connection is important

 

and should be placed at the starting

 

point of a weld. It is recommended to

 

have as short of an arc as possible so

 

that there is less of an arc for the

 

magnetic forces to control. Conditions

 

affecting the magnetic force acting on

 

the arc vary so widely that the reference

4

here is only about cabling connections

and arc preferences.

 

Current Flow Path

Ref. 804 527-A

OM-230 032 Page 25

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Miller Electric Axcess 300 manual Using Multiple Welding Power Sources
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Axcess 300 specifications

The Miller Electric Axcess 300 is a cutting-edge power source designed for advanced welding applications. This machine stands out in the marketplace for its unique combination of features, performance, and versatility. Ideal for industrial environments, the Axcess 300 is particularly well-suited for multi-process welding, allowing users to engage in MIG, TIG, and Stick welding with ease.

One of the hallmark features of the Axcess 300 is its exceptional output capability. With a maximum output of 300 amps, this machine is equipped to handle a variety of welding tasks ranging from light to heavy fabrication. The machine can easily accommodate materials of varying thicknesses, making it an exceptional choice for diverse welding projects.

Incorporating Miller's advanced Auto-Set technology, the Axcess 300 simplifies the setup process for welders. With just a few inputs from the operator, the machine intelligently adjusts itself to provide optimal welding conditions, ensuring high-quality results without the need for extensive expertise. This feature is especially beneficial for less experienced welders, allowing them to produce excellent welds with minimal guidance.

The Axcess 300 employs Miller's innovative X-Mode technology, which helps to maintain a stable arc even when working with challenging materials or in fluctuating conditions. This enhances arc control, minimizing defects such as spatter and burn-through. Moreover, the machine's extensive voltage range allows for superior performance over different welding procedures, contributing to more efficient operation overall.

Enhanced portability is another important characteristic of the Axcess 300. Its compact design and lightweight construction make it easy to transport, allowing operators to quickly move the machine to different job sites. The durable enclosure protects against the rigors of industrial use, ensuring a long operational lifespan.

Safety features integrated into the Axcess 300 include a built-in thermal overload protection system, which prevents the machine from overheating during heavy usage. Furthermore, the intuitive interface with easy-to-read displays allows for straightforward operational controls, enabling welders to focus on their work without unnecessary distraction.

In summary, the Miller Electric Axcess 300 is a versatile, powerful, and user-friendly welding power source that combines advanced technology with practical features, making it an invaluable asset for professionals in various sectors.
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