Control Unit - Migatronic PI 200 AC/DC PFC Manual De Instrucciones

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1
TIG AC/DC
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 therefore possible to have one program for
each welding job for which the machine is used.
It is possible to store 10 settings in each welding process
(MMA DC, MMA AC/DC, TIG DC and TIG AC/DC) = 40
program settings.
Each program can be selected by:
1. Choose between MMA or TIG.
2. Choose between DC or AC.
3. Select program number (P01...P10). The control knob
can be used for shifting between the programs when the
key pad is kept pressed down.
Reset of current program (Factory default settings).
Keep pressed the knob: after 3 sec the display will start
flashing to indicate the current program has been restored to
Factory settings.
The latest used program setting in the relevant program
group (MMA DC, MMA AC, TIG DC and TIG AC) will be
shown when the program key pad is selected.

CONTROL UNIT

A
s
Hz
t
2
%
V
A
Welding current/Arc voltage
The key pad can be used to display the welding
current.
Adjustable from 5A to 200A or 250A 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.
Press the key for 3 seconds to display the arc voltage (valid
ONLY for TIG DC and MMA DC). Press again "A" to display
the welding
current.
Units for parameters
Units of measurement of the selected parameter.
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.
Panel lock
Text is displayed, when panel lock is activated in
the user menu (ref. paragraph "user menu").
TIG welding
TIG welding
The parameters can be adjusted with the control
knob after they are shown on the display. Press the
relative key to select the parameter. The relevant LED will
illuminate.
Pre-flow [s]
Pre-flow is the period of time for which gas flows
after the torch switch is pressed and before the HF
arc is established, or until the torch is lifted away from the
workpiece in the LIFTIG process. Variable 0-10 sec.
15

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Pi 250 ac/dc

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