Miller Electric Axcess 300 manual Using Multiple Welding Power Sources

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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

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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

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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

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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

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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

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intense magnet force will be around the

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arc due to a difference in resistance for

the magnetic path in the base metal.

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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

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here is only about cabling connections

and arc preferences.