14 | P a g e
PATON
®
PSI STANDARD SERIES DC MIG/MAG TIG/MMA
The procedure for changing the values of the operational parameters of the welding unit for the current welding
process is described in Section 6.1.
3.5. PROTECTION AGAINST ELECTRODE STICKING
At the stage of arc starting, the electrode can stick to the workpiece and, as a result, the electrode can be
damaged due to overheating. If the electrode has stuck to the workpiece, the welding current decreases
within 0.6 … 0.8 s after the sticking. The temporary reduction in the welding current makes it easier for
the welder to peel off the stuck electrode. After separating the electrode from the product, the welding
process can be resumed without any problems.
3.6 SETTING THE SLOPE OF THE VOLT-AMPERE CHARACTERISTICK OF
THE WELDING UNIT
This function is designed to facilitate welding with electrodes with diverse coatings. By default, the slope
of the volt-ampere characteristic
[VOLT-AMPER CHARAKTERISTIC]
of the welding unit is
1.4 V/A.
This
value is optimal for the most common electrodes and with rutile coating. In order to facilitate welding
with electrodes with standard coating, it is recommended to set the slope of the volt-ampere characteristic
[VOLT-AMPER CHARAKTERISTIC]
equal to
1.0 V/A
. If electrodes with cellulose coating are used, the
slope of the volt-ampere characteristic should be
0.4 … 0.6 V/A
. In this case, it is sometimes required to increase the threshold value
[TRESHHOLD ARC
FORCE]
for the reduced-voltage welding function to 18 V
The procedure for changing the values of the operational parameters of the welding unit for the current welding
process is described in Section 6.1.
3.7. SHORT ARC WELDING MODE
The short arc welding mode should be used in overhead position welding, when it is required to prevent
arc stretching. For this purpose, activate
(ON)
the short arc welding function
[SHORT ARC MODE]
of the
welding unit. By default, the function is deactivated
(OFF).
The procedure for changing the values of the operational parameters of the welding unit for the current welding
process is described in Section 6.1.
I (A)
U (V)
Summary of Contents for PSI 160 Standard
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