Functional description
24
3.6.7 Welding current I2
Welding current I2 is set as described in Chapter 3.6.1.
The use of welding current I2 is only meaningful for TIG welding, and is therefore
only displayed if TIG welding is taking place. Welding current I2 is used when
pulsing (see chapter 3.9.1) and when two-current control is being used:
Two-current control:
General method of operation:
The use of two-current control allows the user to work with 2 different preset
currents when using a 2-button torch. In other words, you can switch between the
two values I1 and I2 when welding.
The changeover to I2 takes place for as long as torch button 2 is pressed. When
torch button 2 is released, a changeover to I1 occurs immediately. This setting
can be modified in the System application, see chapter 3.14.3 (torch function,
locking I2).
Examples of changeovers:
From high current to low current or vice-versa, e.g. due to a change of
welding position
Manual pulsing (see chapter 3.6.8)
Starting with high current I1 to warm up the workpiece, then welding with
lower current I2.
Starting with lower current I1 at workpiece edges, then welding with higher
current I2.
Changing over is possible during 2-step and 4-step operation without pulsing.
The following ranges can be set in accordance with welding current I1.
INVERTIG.PRO
digital
240 DC / AC/DC
INVERTIG.PRO
digital
280 DC / AC/DC
INVERTIG.PRO
digital
350 DC / AC/DC
INVERTIG.PRO
digital
450 DC / AC/DC
TIG
3 A … 240 A
3 A … 280 A
3 A … 350 A
3 A … 450 A
Current I2 setting takes place either by activating the I2 setting facility, and/or
extremely quickly and easily by pressing torch button 2 before the welding
procedure.
3.6.8 Downslope time
The downslope time is set as described in Chapter 3.6.1.
The downslope time is the time during which the welding current is linearly
reduced to the end crater current. The downslope time starts immediately after
releasing torch button 1 during 2-step welding. During 4-step welding the
reduction time is started by pressing torch button 1. Slowly reducing the welding
current prevents end craters and the associated cracks from forming. Reduction
stops immediately as soon as the torch button is released in 4-step operation.
Содержание INVERTIG.PRO digital 240 DC, 240 AC/DC
Страница 1: ...GB OPERATING INSTRUCTIONS TIG inert gas welding units INVERTIG PRO digital 240 450 DC AC DC...
Страница 7: ...Introduction 7 1 2 General description Figure 1 INVERTIG PRO digital...
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Страница 81: ...Components 81 Figure 53 Exploded view of an INVERTIG PRO digital 240 DC 450 AC DC left...
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