Migatronic DELTA 200 DC HP PFC Manuel D'instruction page 18

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Current mode control
Internally:
In internal mode the current is adjusted
by means of the turn button next to the display.
Torch control:
Adjustment is made by means of the
adjustment knob on the welding torch if such
one exists. The maximum welding current is
adjusted on the knob on the machine control
panel. By means of the torch adjustment it is
possible to decrease the current to the
minimum current of the machine, but not to
exceed the maximum setting on the machine
control panel.
Remote control:
Adjustment is made by means of pedal.
The maximum welding current is adjusted on
the button on the control panel. By means of the
pedal it is possible to vary the amount between
minimum and maximum of the set current on
the display.
When the feet pedal is connected, the machine
must always be in 2-times trigger mode and
selection of the functions 4-times and slope-
down is not possible.
Fixed functions
A number of functions are fixed and cannot be
connected or disconnected from the control
panel.
Anti-freeze
The antifreeze function is always active. When
welding MMA or TIG it may occur that the
electrode sticks to the work piece. The machine
will register that the electrode sticks and it will
then decrease the welding current to 10 A
which make it easy to break the electrode off
the work piece. Welding can then be restarted
as usual.
Pre-flow
Pre-flow is the period of time for which gas flows
after the torch switch is pressed and before the
HF arc is established. In the LIFTIG process the
period is the time until the torch is lifted away
from the work piece. Time is set to 0.1 sec.
Safety timer
If the welding arc hasn't been established after
2 sec., using contact-free striking in TIG mode,
then the machine is reset and the high voltage
generator is switched off.
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