Amada MM-315B, Руководство по эксплуатации, Страница: 21 / 36

MM-315B
5. Measurement
5-10
(5) Checking Conduction Degrees
After the weld current is measured, press
%744
&')
while the current value is
displayed. The conduction degrees can be checked.
5 . 5 0 K 1 0 C
The Current and Cycles are shown.
Press
%744
&')
.
1 0 6 ° 1 0 C
The conduction degrees are shown.
Press
%744
&')
again; the current and cycle values are shown. The current and
conduction degrees are measured at the same time. Be sure to check both
displays by pressing
%744
&')
.
In DC measurement, the conduction degrees will be as follows:
* * * ° 1 0 C
About Conduction Degrees:
For single-phase AC welders, waveforms A and B, which have the same RMS
value, are shown below.
Though the RMS current values are the same, the time during which the current
doesn’t flow differs (TA in A, TB in B).
This causes the heated workpiece to cool. In other words, A is more likely to
produce spatter-free, high-quality welds due to the shorter period of time with no
current flow. On the other hand, with B, the weld transformer has a greater
remaining capacity, so the weld current can be increased.
In DC measurement, the conduction degrees are shown.
Conduction
degrees