Kemppi MasterTig ACDC 3500W Operating Manual page 18

3.4.11 Pulse welding (only with the pulse panel)
PULSE
RATIO
BACK.
FREQUENCY
ON /
PULSE
OFF
1. Switch the pulse welding on by means of the pulse-
section key ON/OFF.
2. Adjust the average current that you want from the
current adjustment knob. The current display will
show you the average current.
3. Press the key BACK. FREQUENCY once. The text bAc
of the right-hand display shows you that now
you can adjust the background current from
the current knob. The background current is
proportional to the average current, but it is
shown in the current display in amperes.
4. Press the key BACK. FREQUENCY again. The text FrE of
the current display shows that now you can adjust
the pulse frequency. The pulse frequency is shown
in Hz.
5. Press the key PULSE RATIO once. You will see the pulse
current in the current display. The right-hand
display reads PUL. You can also adjust the pulse
current, but please note that this will change the
average current.
6. When you press the key PULSE RATIO again, you can
adjust the pulse ratio, rAt. The pulse ratio is shown
as a percentage of the total length of the cycle.
7. When you press either of the parameter keys a third
time, the adjustment goes back to the average
current AvE.
3.4.12 Control of the start current (only with the pulse
panel)
OFF
HOT
START
+50%
SOFT
-70%
START
By means of the control potentiometer of the start
current you can select either a soft, normal or hot start.
The start current is available only with a 4-function torch
switch operation.
By turning the potentiometer to OFF, you have a normal
start (see the use of the torch switch / 4-function)
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© Kemppi Oy 2021
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By turning the potentiometer to the left, you get a soft
start (SOFT START). When you raise the torch switch,
the current rises in accordance with the up-slope of the
start current to the start current, which is smaller than
the welding current.
From the start current, you can move to the welding
current by pressing the torch switch for a short moment.
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The start current is proportional to the welding current.
You can see the value of the start current in the numerical
display during the control.
When you turn the potentiometer to the right, the start
current is higher than the welding current (HOT START).
Otherwise the start is made in the same way as with a
soft start.
MasterTig ACDC 3500W R01