Design and function
Power-saving mode (Standby)
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5.5.2
RTG1 19POL
Functions
• Infinite setting of the welding current (0% to 100%) depending on the main current
preselected at the welding machine
5.5.3
RTF1 19POL
Functions
• Infinitely adjustable welding current (0% to 100%) depending on the preselected
main current on the welding machine.
• Start/stop welding operation (TIG)
5.6
Power-saving mode (Standby)
You can activate the power-saving mode by either pressing the push-button
> see 4.3 chapter
for a
prolonged time or by setting a parameter in the machine configuration menu (time-controlled power-
saving mode
)
> see 5.9 chapter
.
When power-saving mode is activated, the machine displays show the horizontal digit in the
centre of the display only.
Pressing any operating element (e.g. turning a rotary knob) deactivates power-saving mode and the
machine is ready for welding again.
5.7
Arc length restriction (USP)
The arc length restriction
function stops the welding process when an excessive arc voltage is
detected (unusually high gap between electrode and workpiece). This function can be adjusted in the
corresponding Expert menu, depending on the process:
MMA welding
> see 5.2.7 chapter
TIG welding
> see 5.3.6 chapter
The arc length restriction cannot be used for cel characteristics (if available).
5.8
Voltage reducing device
Only machine variants with the (VRD/SVRD/AUS/RU) code are equipped with a voltage reduction device
(VRD). The VRD is used for increased safety, especially in hazardous environments such as shipbuilding,
pipe construction or mining.
A VRD is mandatory in some countries and required by many on-site safety instructions for power
sources.
The VRD
> see 4.3 chapter
signal light is illuminated when the voltage reduction device is operating
without fault and the output voltage is reduced to a value specified in the relevant standard (see technical
data
> see 8 chapter
).
