Paton ProMIG-200, User Manual, Page: 114 / 130

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PATON ProMIG DC MMA/TIG/MIG/MAG
immediately after the function of gas pre-purge of the welding zone for the time [t.Pr] starts
the process of arc striking - this is the same as in the 2T button mode. In this case, after
the
first release , the welding process continues unchanged. This mode is provided by PATON as
a bonus one, use it as desired, since it is more common from the point of view of more
frequent use of 2T mode by customers in conventional semi-automatic units, therefore, it is
more user-friendly.
5.3 INDUCTANCE FUNCTION
This function is required to change the rate of current build-up when the arc voltage
changes. As a result, spatter is reduced, but it also affects the drop transfer process, which
at high inductance values leads to a slowdown in the welding process and a strong decrease
in the drop transfer frequency. By changing the value of this function, each user can choose
the optimal welding process for themselves. In general, the minimum values are used for
welding thickness of more than 3 mm, and the maximum values are used for thinner
products.
By default, the inductance is set to OFF, i.e. set to zero stage. See paragraph 6.1 to
change the value of any function in the current welding mode.
5.4 SHIELDING GAS PRE-PURGE FUNCTION
This function is necessary to protect the welding zone from the harmful effects of
atmospheric air, and consists in pre-purging the welding zone with shielding gas before
striking the welding arc. By default, the "pre-purge time" [t.Pr] is set to 0.1 sec; this value can
be changed at any time at your discretion. See paragraph 6.1 to change the value of any
function in the current welding mode. Use a right wire feeder indicator.
5.5 SHIELDING GAS POST-PURGE FUNCTION
This function consists in the post-purging of the welding zone with a shielding gas
after the welding arc is extinguished, since the hot weld pool is afraid of the harmful effects
of atmospheric air for some time. By default, the post-purge time [t.Po] is set to 1.5 seconds;
this value can be changed at any time at your discretion. See paragraph 6.1 to change the
value of any function in the current welding mode. The left source indicator and the right
wire feeder indicator can be used.
5.6 BEGINNING OF WELDING VOLTAGE/FEED SPEED BUILD-UP FUNCTION
This function is necessary to smoothly reach the welding mode in the set time
[t.uP], which reduces splashing of the weld pool and splatter at the moment of striking, when
the wire is still cold. The extended smooth reach time is used for the initial weld pool
formation.
CAUTION! The longer the build-up time, the smaller the initial weld, so it is used
only for medium and long seams. For this reason, do not increase the time by more than 0.1
seconds when welding with tacks, etc.