Lincoln Electric 355M Manuel d'utilisateur télécharger pdf (Page 27)

OPERATION

B-5 B-5

POWER WAVE 355M/405M

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In non-synergic modes, the WFS control behaves more

like a conventional CV power source where WFS and

voltage are independent adjustments. Therefore to

maintain the arc characteristics, the operator must

adjust the voltage to compensate for any changes

made to the WFS.

In constant current modes (stick, TIG) this control

adjusts the output current, in amps.

• VOLTS / TRIM:

In constant voltage modes (synergic CV, standard CV)

the control adjusts the welding voltage.

In pulse synergic welding modes (pulse GMAW only)

the user can change the Trim setting to adjust the arc

length. It is adjustable from 0.500 to 1.500. A Trim set-

ting of 1.000 is a good starting point for most condi-

tions.

• WELDING MODE

May be selected by name (CV/MIG, CC/Stick Crisp,

Gouge, etc.) or by a mode number (10, 24, 71, etc.)

depending on the Control Box options. Selecting a

welding mode determines the output characteristics of

the Power Wave power source. A more complete

description of all modes can be found in this section.

• ARC CONTROL

Also known as Inductance or Wave Control. Allows

operator to vary the arc characteristics from "soft" to

"harsh" in all weld modes. It is adjustable from -10.0 to

+10.0, with a nominal setting of 00.0 (The nominal set-

ting of 00.0 may be displayed as OFF on some Power

Feed wire feeder control panels). See the Welding

Mode descriptions for a more detailed explanations of

how the Arc Control affects each mode.

CONSTANT VOLTAGE WELDING

Synergic CV:

For each wire feed speed, a corresponding voltage is

preprogrammed into the machine through special soft-

ware at the factory. The nominal preprogrammed volt-

age is the best average voltage for a given wire feed

speed, but may be adjusted to preference. When the

wire feed speed changes, the Power Wave automati-

cally adjusts the voltage level correspondingly to main-

tain similar arc characteristics throughout the WFS

range.

Non Synergic CV:

This type of CV mode behaves more like a convention-

al CV power source. Voltage and WFS are independent

adjustments. Therefore to maintain the arc characteris-

tics, the operator must adjust the voltage to compen-

sate for any changes made to the WFS.

All CV Modes:

Arc Control, often referred to as wave control, adjusts

the inductance of the wave shape. The wave control

adjustment is similar to the "pinch" function in that it is

inversely proportional to inductance. Therefore,

increasing wave control greater than 0.0 results in a

harsher, colder arc while decreasing the wave control

to less than 0.0 provides a softer, hotter arc.

(See Figure B.2)

FIGURE B.2

Current

CURRENT WAVE FORM (CV)

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 136 137

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Lincoln Electric 355M Manuel d'utilisateur Page 27

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