Miller Electric Axcess 450 Manuel du propriétaire télécharger pdf (Page 32)

OM-250 720 Page 26

SECTION 6 − OPERATION

6-1. Operational Terms

The following is a list of terms and their definitions as they apply to this interface unit:

General Terms:

Synergic Synergic refers to the unit’s ability to use preprogrammed pulse parameters to determine the actual pulse

settings of Peak Amperage, Background Amperage, Pulse Frequency and Pulse Width at any specific wire feed

speed setting.

Arc Adjust Term used to represent arc length adjustments in pulse programs. Increasing Arc Adjust increases the actual

arc length. Likewise, decreasing arc adjust shortens arc length. Arc Adjust is replaced by volts in MIG

programs.

Program Eight active slots for selection of various processes, wire types, and parameters.

Process A selection made for MIG, Pulse, Accu-pulse, and RMD (optional).

MIG CV weld process with individual settings of voltage and wire speed.

Pulse Conventional pulse program using peak, background, pulse width, frequency, and peak voltage as factory

taught data. Adaptive method is controlled by frequency adjustment.

Accu-pulse Pulse process utilizing constant current ramps with constant voltage control of peaks and backgrounds.

Adaptive response is controlled by peak and minimum current levels. Benefits are shorter arc lengths, better

puddle control, more tolerant of tip-to-work variation, less audible noise, no arc wandering, allows weld to fill in

at toes increasing travel speed and deposition, and more tolerant to poor fit up and gaps.

Accuspeed (optional) CV Pulse process designed for high travel speeds. Typically used in Robotic applications. Arc is designed to be

tight and fast. Front panel display is ACCU − SPED.

AccuCurve CV Pulse process using a pulse waveform with modified curves at particular locations within the waveform. Has

a distinguished change in arc characteristics. Front panel display is ACCU − CURV.

RMD (optional) RMD refers to Regulated Metal Deposition. A precisely controlled short-circuit transfer. Benefits of RMD are well

suited to thin materials, improves gap filling and spatter reduction. Provides less heat input into workpiece,

minimizes distortion and allows use of larger diameter wire on thin gauge materials.

Wire Type Selection of wire type by alloys and classification.

Gas Type Selection of shielding gas being used in application.

Process Set Up Selection procedure for entering program.

Program Load Enters selected program information (process, wire type, gas, etc.) into program slot (1-8).

Volts Preset voltage in MIG mode at idle, actual voltage while welding, and 3 seconds hold value at end of weld.

Time Indicates time values being set for timed functions (e.g. Preflow, Postflow which are only available in the Arc On

and Analog input or the Arc On and No Analog input modes).

Arc Length Distance from end of wire electrode to workpiece.

WFS Term used to represent wire feed speed. In MIG mode, wire feed setting is independent of voltage setting. In

pulse, Accu-pulse, and RMD (optional) adjusting wire feed speed also increases power level on wire electrode

(one knob control).

Amps Indicates average amperage while welding and 3 seconds hold value at end of weld.

Arc Control Pressing this button will allow setting of inductance in MIG mode and sharp arc in pulse, Accu-pulse, and RMD

(optional).

Inductance In short circuit GMAW welding, an increase in inductance will decrease the number of short circuit transfers per

second (provided no other changes are made) and increase the arc-on time. The increased arc-on time makes

the welding puddle more fluid.

Sharp Arc In pulse and Accu-pulse mode this adjustment changes the arc cone by adjusting the preprogrammed factory

pulse data. In RMD (optional) this control will affect the arc in much the same way as inductance.

Adjust Control knob used to change or set parameters and functions.

Sequence Selecting Sequence will allow setting of preflow, start, crater, postflow, and retract times and parameters (only

available on Auto Axcess models in the Arc On and Analog input or the Arc On and No Analog input modes).

Preflow Setting a time value for gas flow prior to arc start (only available on Auto Axcess models in the Arc On and

Analog input or the Arc On and No Analog input modes, and can only be set with the optional PDA with File

Management software).

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Miller Electric Axcess 450 Manuel du propriétaire Page 32

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