S.p.A.
TE470/TE480 Instruction
Manual
CHAPTER 4 - WELDING CURRENT AND CONDUCTION ANGLE MEASURE
The following data are displayed after each weld:
1) Welding program used.
2) Number of welds carried out after the last counter reset.
3) Last weld current conduction angle.
4) The programmed weld time.
5) Current of the last weld.
1
2
3
4
5
Pr01 12455 104°
08.0 ~ 12.3kA
The displayed current value measured by the control unit represents the average of the
RMS
values measured
for each weld time half-period. The displayed value always refers to the main adjustment i.e. to that of the WELD
parameter. In the case of pulse welds, the value of the current is always that of the last impulse.
The PRE-WELD current, the POST-WELD current and the current that flowed during the slope times are never
measured.
The control unit also measures the welding current conduction angle.
The conduction angle represents the current flow time during the half-period. The displayed value represents the
average of the values measured for each weld time half-period. The displayed value always refers to the main
adjustment, i.e. to that of the WELD parameter. The conduction angle of the PRE-WELD current, the POST-
WELD current and the current that flowed during the slope times is never measured. In the case of pulse welds,
the value of the angle always refers to the last impulse.
Its highest attainable value is 180 degrees.
Examples of currents having different conduction angles:
Conduction angle
180°
Conduction angle
72°
If a welding test is carried out in NO WELD, both welding current and conduction angle displayed values are, of
course, equal to zero.
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