Kemppi MasterTig ACDC 3500W Operating Manual page 17

The frequency of AC welding can be adjusted by means
of the MINILOG and PULSE PANEL. Raising the frequency
will make the arc slightly more stable and narrow, but it
will increase the noise caused by arc.
FREQUENCY
50 - 200 Hz
AC
1. Press the FREQUENCY key in the AC square.
2. Adjust the frequency with the current knob. The
adjustment range of the frequency is 50 ... 200 Hz.
When leaving the factory, the frequency of the
machine is 60 Hz.
3.4.10 Minilog operation (only with minilog and pulse
panel)
MINILOG
OFF
+20%
-80%
With the Minilog operation you can select two currency
levels, the welding current and the base current, and you
can move from one to the other by quickly pressing the
torch. The Minilog operation can be used only with a
4-function torch switch operation.
The selection and adjustment of the Minilog operation
is done by means of the potentiometer. When the
potentiometer is in the OFF position, the operation is not
in use. The welding current is selected from the current
knob like usually. The Minilog knob is used to select a
basic current, the minimum of which is 80 % below the
welding current and the maximum is 20 % above the
current level. During the adjustment, you can see the set
value of current in amperes in the current display.
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© Kemppi Oy 2021
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You can move from the welding current to the basic
current by quickly pressing the torch.
By quickly pressing it again, you move back to the
welding current. The signal lights on the panel show you
the current level you are on.
You can stop the welding by a longer pressing of the
torch switch (> 0.7 s).
The Minilog operation can be used to adjust the heat, if
the work piece is overheated or if you need more heat for
a moment.
With the Minilog operation you can go to a lower current
level for example when you change the position or the
grip of the filler material wire without having to stop the
welding to do that.
A lower current can also be used as the crater filling
current if you do not want to use the down-slope time
for that.
MasterTig ACDC 3500W R01