Paton ProMIG-200, User Manual

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PATON ProMIG DC MMA/TIG/MIG/MAG
Example: welding with 0.8 mm wire, the set wire feed speed is 5.5 m/min, the set
basic value of the welding voltage is 18V, and the pulsation power [Po.P] = 20%, while the
pulsation frequency [Fr.P] = 20 Hz and "duty cycle" [dut] = 50% by default.
Result: the source voltage will pulse from 14.4 V to 21.6 V at a frequency of 20 Hz;
the pulses will have an equal shape in amplitude and time.
The "duty cycle" parameter is set to 50% by default. Changing this value introduces
an asymmetry between the voltage pulse time and the voltage "pause" time:
default
"duty cycle" [dut] = 50%
"duty cycle" [dut] = 20% "duty cycle" [dut] = 70%
The unit will react in such a way that the average voltage level during the welding
process will be at the level of the set basic value of the welding voltage of 18V (as it was set
before), respectively, and the heat input to the welding seam will be at the level of the same
18V, but the stability of the welding process, the mixing of the weld pool and penetration will
change. This is a very important condition for the user to accurately estimate the change in
the heat input to the weld pool, e.g., by comparing it with another main voltage without
pulse mode.
If the task is precisely to reduce the heat input into the weld, using a pulse mode,
e.g., when welding thin metals, then it is enough to reduce the main voltage of the source in
a conventional way. In this case, the amplitude of the pulses and pauses set earlier will
automatically adjust to the voltage, therefore, the user will clearly understand how much the
current heat input into the weld has been reduced in comparison with the previous mode,
while simultaneously changing the power and "duty cycle" of the pulses in any combination
to obtain the desired process. This task is not easy, since several parameters are regulated at
once.
These parameters are set in different situations in different ways, according to the
welder’s requirements. See paragraph 6.1 to change the value of any function in the current
welding mode.
5.9 MOTOR ON/OFF FUNCTION
This additional function is provided to turn the motor on/off. It may not be available
in the menu, since if there is a connection between the control units, the welding unit itself
decides to turn on and off the motor in a specific welding mode.
CAUTION! For the correct operation of the semi-automatic unit, this parameter
must always be in the ON position.
t, sec t, sec
t, sec