Lincoln Electric ASPECT 300 Operator's Manual page 12

VRD LED (enabled on Australian Machines only):
This machine is provided by VRD (Voltage Reduction
Device) function: this reduces the voltage at the output
leads.
The VRD function is enabled by factory default only
on machines that meet the AS 1674.2 Australian
Standards. (C-Tick logo " " on/near the Rating Plate
applied on the machine).
The VRD LED is ON when the Output Voltage is below
12V with the Machine at idle (no welding time).
For others machines (CE & USA) this function is abled
into Menu SYS.
Polarity:
This icon is designated to set the polarity of the process
in use: DC+, AC stick, DC- & AC TIG operations.
NOTE: Pressing the button assigned to process
POLARITY will toggle the illumination of the icon
between DC & AC polarity.
Process:
The function of this icon is to allow the user to set the
determined process.
1. High-Frequency TIG
2. Lift-Start TIG
3. Stick – Soft Mode (7018 style electrodes)
4. Stick- Crisp Mode (6010 Style electrodes)
NOTE: Arc control parameters, Hot start and arc force
parameters, are different in two stick modes. In menu
SMAW is possible to change hot start and arc force
diagram.
NOTE: Pressing the button assigned to PROCESS
selection will toggle the illumination of the icon from left-
to-right following the progression of the numbers.
English
Output:
This section is designated to allow the operator to set
the desired output control method
1. 2 STEP
2. 4 STEP
3. ON:
Pressing the button assigned to OUTPUT selection will
toggle the illumination of the icon from left-to-right
AC Wave Shape:
These icons allow the operator to customize the arc-
performance for TIG welding in AC polarity only.
AUTO and Expert Mode:
By default the AUTO icon is lit. This means that AC
waveshape parameters are automatically managed
depending on the welding current. The only available
parameter is AC-Frequency.
AC-Frequency: This function controls the frequency of
the AC Wave shape in cycles per second
To enable Expert mode:

Push the AC WAVESHAPE button twice: The AUTO
icon will start to blink and the display will show the
message AUTO ON.

Turn the encoder to select AUTO OFF

Confirm the selection
WAVESHAPE button again. The AUTO icon will turn
OFF and all the AC WAVESHAPE parameters will
become available.
To revert to AUTO mode perform again the steps above
pushing several times until AUTO icon will start blinking,
then select AUTO ON with the encoder.
In Expert mode the following parameters are available:
1. AC-Frequency: This function controls the frequency
of the AC Wave shape in cycles per second.
2. AC-Balance: AC balance controls the amount of
time, as a percentage, that the polarity is electrode
negative.
3. Electrode Negative/Positive offset:
controls the amperage setting for the negative and
positive side of the wave when TIG welding in AC
polarity.
The voltage display screen shows an abbreviated
description of the icon selected. The amperage display
screen shows the value to be adjusted.
10
no trigger required to start.
by pushing the
This function
English
AC