Lincoln Electric INVERTEC V205-T AC/DC Bedienungsanleitung Seite 7

set-up menu, use the current/function control (F1) to
scroll through to 0 and press the parameter button (S4).
The display then reverts back to the main current setting
and normal operation is possible.
The following parameters can be adjusted.
Parameter
0 Exit from set-up
2 Preflow Time (0-25 sec)
3 Arc-Force, percent above Peak
Current for stick only (0-100%)
4 Hot-Start, percent above Peak Current
for stick only (0-100%)
5 Setting the AC Waveform
0 = Sinusoidal
1 = Triangular
2 = Square
6 Min current value with Remote Control
(6 Amps - Peak current)
7 Max current value with Remote Control
(6 Amps - Peak current)
8 Lift or HF start in DC, ignored in AC
0 = HF starting
1 = Lift starting
9, 10, Do not select or modify, used for
11 factory settings.
12 2 Step trigger selection
0 = restart disabled
1 = restart enabled
13 4 Step trigger selection
0 = restart disabled
1 = restart enabled
14 Electrode selection for TIG only
(increase positive half wave ignition)
S5 - Pulse ON/OFF: The LED beside the symbol will
light up to confirm the selection: Pulse ON or OFF.
The led on the graphic display is indicating the function
and the display will show the parameter. You may select
the function by pushing the parameter button (S4) and
adjust the setting with the current/function control (F1).
•
Frequency
•
Pulse on time
•
Background current
TIG Trigger Sequences
TIG welding can be done in either the 2-step or 4-step
mode, which is selected with the Trigger Selection
button. 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. To
setup the machine for TIG welding refer to the Output
Connections section.
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 (Lift
TIG or HF TIG). The default setting is HF starting
and can be changed to Lift TIG in the set-up menu.
TORCH
BUTTON
OUTPUT
Default
CURRENT
0.5 sec
30%
80%
GAS
After the arc is started the output current will be
2
increased to the welding current. This increase or
upslope time will be dependent on the times you
have selected using the Parameter Selector switch.
10 A
2. Release the TIG torch trigger to stop welding. The
machine will now decrease the output current at a
Peak
controlled rate, or downslope time, until the
Current
Start/Crater current is reached and the output of the
0
machine is turned OFF. The Downslope Control
adjusts the downslope time.
After the arc is turned OFF, the gas valve will
remain open to continue the flow of the shielding
0
gas to the hot electrode and work piece. The
Postflow Control adjusts the duration of this postflow
shielding gas time.
1
TORCH
BUTTON
2.0
OUTPUT
CURRENT
GAS
As shown above, it is possible to press and hold the TIG
torch trigger a second time during downslope to end the
downslope time and maintain the output current at the
Start/Crater current. When the TIG torch trigger is
released the output will turn OFF and the postflow time
will start.
The default setting is restart disabled. Restart enabled
can be selected in the set-up menu.
4-Step Sequence
With the 4-step trigger mode and a TIG welding mode
selected, the following welding sequence will occur. To
setup the machine for TIG welding refer to the Output
Connections section.
7
(1) (2)
PRE-FLOW
--- GAS ON ---
(1) (2)
PRE-FLOW
--- GAS ON ---
POST-FLOW
POST-FLOW