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Инструкция по эксплуатации Miller Electric, модель 394F

Производитель: Miller Electric
Размер: 1.29 mb
Название файла: o222394f_mil.pdf
Язык инструкции:enfr
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Фрагмент инструкции


Increasing Arc Adjust increases the actual arc length. Likewise, decreasing arc adjust shortens arc length. Arc Adjust is replaced by volts in MIG programs. Selecting Trigger Control allows activating trigger functions such as DS, TH, 4T, TDS, and TPS. Dual Schedule allows selecting a pair of programs that can be used together. Trigger Hold allows the operator to feed wire without continuously pressing the gun trigger. In trigger hold mode, momentarily press gun trigger, and wire will feed until gun trigger is momentarily pressed again. 4T allows the operator to select between weld parameters and crater parameters using the gun trigger. Crater time must be set for at least 0.2 seconds to make this function operational. If gun trigger is released during welding, unit goes into trigger hold, then pressing and holding trigger again causes unit to stay in crater until trigger is released and crater parameter times out. TDS allows the operator to select between a pair of weld programs by using the gun trigger. In TDS mode, momentarily pressing the gun trigger allows the operator to cycle between a pair of preselected weld programs. TPS allows the operator to select weld programs by using the gun trigger. In TPS mode, momentarily pressing the gun trigger allows the operator to cycle through preselected weld programs up to a total of 8 programs. Eight active slots for selection of various processes, wire type, and parameters. A selection made for MIG, Pulse, Accu-pulse, and RMD (optional). CV weld process with individual settings of voltage and wire speed. Conventional pulse program using peak, background, pulse width, frequency, and peak voltage as factory taught data. Adaptive method is controlled by frequency adjustment. 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. 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. 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 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. Selection of wire type by alloys and classification. Selection of shielding gas being used in application. Selection procedure for entering program. Enters selected program information into program slot. Preset voltage in MIG mode at idle, actual voltage while welding, and 3 seconds hold value at end of weld. 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). Distance from end of wire electrode to workpiece. 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). Indicates average amperage while welding and 3 seconds hold value at end of weld. Allows setting of inductance in MIG mode. 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 in much the same way as 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. Control knob used to change or set parameters and functions. OM-222 394 Page 15 General Terms: Sequence Selecting Sequence will allow setting of preflow, start, crater, and postflow times and parameters. Preflow Setting a time value for gas flow prior to arc start. Start Provides voltage/arc adjust, wire feed rate, and time value for modified arc starts (which is only adjustable with the optional PDA with File Management/WaveWriter software). Crater Allows setting of voltage/arc adjust, wire feed rate, and time value for arc ends. Postflow Setting a time value for gas flow after arc end. Feeder Set Up Allow selection of Sequence and trigger functions. Auto Thread Method of jogging wire without holding jog or trigger switch. Pressing Jog and Retract simultaneously will automatically feed wire. Default setti...


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