Lincoln Electric INVERTEC V160 Bedienungsanleitung Seite 10

O. Pulsing Mode Switch (V160-T Pulse only): In the
TIG welding modes, this switch turns the pulsing
function ON and controls the pulsing frequency
range (20Hz or 300Hz). In Stick welding mode, this
is not used.
P. Pulsing LED (V160-T Pulse only): This indicator
shows the pulsing frequency when pulsing is turned
ON. With this indication, the operator can adjust the
frequency to the desired value before welding.
(Note: At higher frequencies the LED flashes very
fast and seems to be continuously ON however it is
pulsing.) If pulsing is turned OFF or if the machine
is in Stick welding mode, the indicator will be OFF.
Q. Pulsing Frequency Control (V160-T Pulse only):
When the pulsing function is ON, this control knob
will adjust the pulsing frequency. The pulsing
frequency adjustment range is 0.2-20Hz or 3-300Hz
depending on the Pulsing Mode Switch position.
R. Pulsing Background Current Control (V160-T Pulse
only): When the pulsing function is ON, this control
knob will adjust the pulsing background current.
This is the current during the low portion of the
pulse waveform; it can be adjusted from 10% to
90% of the welding current.
S. VRD LED's (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 32V with the Machine at idle (no welding
For others machines this function is disabled
(the LED is always OFF).
TIG Trigger Sequences
TIG welding can be done in either the 2-step or 4-step
mode. The specific sequences of operation for these
two trigger modes are explained below.
2-Step TIG Sequence
With the 2-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
1. Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
time).
the machine is turned ON. At this time the arc is
started according to the selected welding mode.
After the arc is started the output current will be
increased at a controlled rate, or upslope time, until
the Welding current is reached.
2. Release the TIG torch trigger to stop welding. The
machine will now decrease the output current at a
controlled rate, or downslope time, until the Crater
current is reached and the output of the machine is
turned OFF.
After the arc is turned OFF, the gas valve will
remain open to continue the flow of the shielding
gas to the hot electrode and work piece.
As shown above, it is possible to press and hold the TIG
torch trigger a second time during downslope to end the
downslope function and maintain the output current at
the Crater current. When the TIG torch trigger is
released the output will turn OFF and the postflow time
will start. This operation, 2-step restart disabled, is the
default setting from the factory.
4-Step Sequence
With the 4-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur.
1. Press and hold the TIG torch trigger to start the
sequence. The machine will open the gas valve to
start the flow of the shielding gas. After the preflow
time, to purge air from the torch hose, the output of
the machine is turned ON. At this time the arc is
started according to the selected welding mode.
After the arc is started the output current will be at
the Start current. This condition can be maintained
as long or as short as necessary.
If the Start current is not necessary, do not hold the
TIG torch trigger as described at the beginning of
this step. In this condition, the machine will pass
from Step 1 to Step 2 when the arc is started.
2. Releasing the TIG torch trigger starts the upslope
function. The output current will be increased at a
controlled rate, or upslope time, until the Welding
current is reached.
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