Control Unit - Migatronic PI 320 DC Manuel D'instruction

Control knob
All parameters are set by the use of only
one control knob. These parameters include
current, pulse time, slope-up time, etc.
This control knob is positioned in the right
side of the control panel. The digital display shows the
value of the parameter being set. The unit of
measurement of the parameter is shown on the right
side of the digital display.
A parameter can be selected by means of the relative
keypad in the relevant section. A bright indication light
indicates the parameter selected. The control knob is
then used for setting a new value.
Storage of parameters - programs
This function enables storage of programs
(often used machine settings) and shift from
one complete program to another. By pressing the
keypad the display shows a "P" and a number: "1", "2"
etc. Each number includes a program with all
parameters and functions of the machine. It is there-
fore possible to have one program for each welding
job for which the machine is used.
It is possible to store 64 settings in each welding
process (MMA DC and TIG DC) = 128 program
settings.
Each program can be selected by:
1. Choose between MMA or TIG.
2. Finally, select program number (P01...P64). The
control knob can be used for shifting between the
programs when the key pad is kept pressed down
The latest used program setting in the relevant
program group (MMA DC and TIG DC) will be shown
when the program key pad is selected.
Reset of welding programs
Select the program that needs to be reset to factory
settings. Then keep the
secs without turning the encoder.
The program has been reset when the current
program number is flashing on and off in the display
and the -key pad can then be released again.

CONTROL UNIT

-key pad pressed for 10
Welding current
The key pad can be used to display the welding
current.
Adjustable from 5A to 320A, 350A, 400A or 500A
depending on the machine model. After the welding
process has stopped, the adjusted current is shown on
the display. During welding, however, the actual
welding current is shown. During pulse welding an
average welding current is automatically shown when
shifting between welding current and base current
becomes faster than possible viewing.
Units for parameters
Units of measurement of the selected para-
meter.
Welding voltage indicator
The welding voltage indicator is illuminated for
reasons of safety and in order to show if there is
voltage at the output taps.
Overheating error indicator
The overheating indicator is illuminated if
welding is interrupted due to overheating of the
machine.
Mains error indicator
The mains error indicator is illuminated if the
mains voltage is more than 15% lower than the rated
voltage.
Cooling fault
Cooling fault is shown in case of connection
of wrong type of torch, or if a torch has not been
connected. If a flow control kit has been selected, the
cooling fault may indicate problems in the cooling unit.
The error code can be reset by pressing the MMA-key
pad.
Fault symbols
The indicator next to the icon blinks when
other types of errors occur. At the same time a fault
symbol is shown in the display.
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