Control Panel - Migatronic FOCUS TIG 200 PFC Guide De L'utilisateur

Control panel

8
7
t
1
FOCUS TIG 200 AC/DC
18
10 11 12
13
Control knob
1
All parameters are set by the use of only one
control knob. These parameters include current,
slope-down 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.
Welding current
2
A
The key pad can be used to display the welding
current. Adjustable from 5A to 200A.
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
3
A
Units of measurement of the selected parameter.
V
S
%
Welding voltage indicator
4
V
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
5
The overheating indicator is illuminated if welding is
interrupted due to overheating of the machine.
Mains error indicator
6
The mains error indicator is lit if the mains voltage is
more than 25% lower than the nominal mains voltage.
5
6
t
2
9 4
V
PFC
1
17 16 15
Secondary parameters
A Pre-flow [s]
7
3
V
Pre-flow is the period of time for which gas flows
t
1
S
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.
A
Slope-down [s]
8
When welding has stopped by activating the
2
trigger, the machine enters a slope-down stage.
During this stage current is reduced from welding current
to Final Amp over a period of time called the slope-down
time and variable 0-20 sec in steps of 0.1 sec.
Post-flow [s]
9
14
Post-flow is the period of time for which gas flows
t
2
after the arc is extinguished and is variable 0-20 sec.
Current type (TIG AC/DC)
10
It is possible to select either AC (alternating
current) or DC (direct current). In the TIG-welding process,
AC is used for welding of aluminium and its alloys, while
DC is used for the welding of other materials.
AC-t-balance (based on time) (TIG AC/DC)
11
Adjustment of the refinement function during the
AC TIG welding of aluminium and its alloys. The function
is a balance based on time between the positive and
negative halfperiod.
Adjustment is possible between 20 and 80 percent as the
statement in percent is based on the negative part of
the period time. Adjustment continues until a suitable
refinement zone is established around the molten pool.
Electrode preheating (TIG AC/DC)
12
The length of the preheat period depends on both
the diameter of the electrode and the angle of the point
of the electrode, as well as the size of the ball at the end
of the electrode.
Adjustment is possible from 1 to 15, with 1 being the
minimum and 15 being the maximum preheat periods. If
the period is too short the pilot arc will extinguish shortly
after ignition. The size of the ball at the end of the
electrode will increase if the preheat period is too long.
13
Is used for selection of pulse. The pulse current is equal to
the set current. It is possible to adjust:
Pulse time
Adjustable from 0.01 to 10 sec. in DC and
from 0.1 to 10 sec. in AC, in steps of 0.01 sec.
Pause time
Adjustable from 0.01 to 10 sec. in DC and
from 0.1 to 10 sec. in AC, in steps of 0.01 sec.
Base amp
Adjustable from 10 to 90% of the pulse current.
Electrode welding (MMA)
14
Is used for selection of electrode welding. It is not
possible to change welding process during welding.
8
Pulse
(TIG DC and TIG AC)