Migatronic FOCUS TIG 200 PFC Manuel D'instruction page 10

Ignition methods
It is possible to choose between 2 different methods of
ignition for TIG welding: High-Frequency (HF) and LIFTIG
ignition. The ignition method cannot be changed during
welding. The LIFTIG ignition is active when the indicator is
illuminated. The HF is automatically active when the LED is switched
off.
HF-ignition
In HF-TIG ignition the TIG arc is ignited without contact. A high-
frequency (HF) impulse initiates the arc when the torch trigger is
activated.
The HF will not arise and the machine will stop if the electrode is in
contact with the workpiece. Detach the electrode and start again.
LIFTIG-ignition
In LIFTIG ignition the TIG arc is ignited after making contact
between the workpiece and the tungsten electrode, after which the
trigger is activated and the arc is established by lifting the electrode
from the workpiece.
Trigger mode
Selection of trigger mode. Four-times trigger mode is
active when the LED is illuminated, and two-times trigger
mode is active when the LED is turned off. It is not
possible to change trigger method during the welding process.
Two-times
The welding process begins by pressing the torch trigger. Welding
continues until the trigger is released again which effects the slope-
down period.
Four-times
The welding process begins by pressing the torch trigger. If the torch
trigger is released during the slope-up period welding continues with
the adjusted welding current. In order to stop the welding process
the trigger must be pressed again for more than 0.5s after which the
slope-down period begins. The slope-down period can be stopped
by releasing the trigger. Thereafter the post-flow starts.
Anti-freeze
This machine is provided with an anti-freeze control. The anti-freeze-
control reduces the current when the electrodes stick to the weld
piece. This makes it easier to break off the electrode and welding
can continue.
Power reduction
LED "A" flashes to indicate that the machine has
reduced welding current. The machine monitors the
status of mains voltage and automatically reduces the
maximum welding current both in MMA (to 120A) and
TIG (to 150A) when its value is lower than 230V-15%
(195V), permitting reduced operations in case of low
supply.
Only after the mains has recovered normal levels, it will
be possible to increase the current up to maximum by rotating the
encoder.
Reset
It is possible to reset the welding machine to its factory settings:

MMA current 80A

TIG current 80A

Pre-flow 0.2 sec

Post-flow 6.0 sec

No slope-down

Base amp 40%

Pause time = Pulse time = 0.1 sec

AC-T-Balance (AC) 65%

Electrode Pre-heating (AC) 5
To activate reset, switch off the machine and wait until the display is
extinguished. Press the "A" key and hold it down for 10 seconds,
until the display shows "- - - ". Release the key and turn the control
knob to the right, until the display shows "F.SE". Press the "A"-key
again, and the machine will return to factory settings.
USER MENU
This menu is intended to permit advanced settings and
controls of machine.
To access the user menu, press the knob
3 seconds when the machine is not welding, MMA or TIG mode.
Rotate the encoder to point the desired option and activate the
selection by pressing "A".
To change the values of parameters press the knob MMA and
rotate the encoder. Press "A" to save the data.
The following diagram display all parameters and options of menu.
Exit from the USER menu
Open/Close the gas valve in order to purge the torch,
check the gas bottle and pressure reducer. Press "A" to
Open/Close the gas. Exiting the USER menu will close
the gas anyway.
Submenu containing different options:
When pressing locked key pads or rotating the encoder,
the display will flash "PA.L." to remember the active
protection.
0 = unlocked (default setting)
1 = locked
All above settings are not modified via Reset
10
Exit from the submenu (go back to main
menu)
Panel LOCK
Complete lock of box. All keypads and
Encoder are disabled.
for