MM-315B
5. Measurement
5-16
(8) Display in Unit of Half Cycle
A half-cycle weld is indicated by adding a decimal point to the left of the cycle
symbol C. The point indicates 0.5 cycles, such as when a 12.5-cycle weld is
performed, the display will be as follows:
8 . 5 0 K
1
2
.C
(9) Forced Measurement Cycle
If a current value is low in the early period of welding, it may not be measured. (It
tends to occur when an upslope is used.)
In this case, set a current higher than the level at the end of measurement in the
setting cycle of NCT. Once a current higher than the level at the end of
measurement flows, the setting of NCT becomes invalid, and the measurement is
complete with a current lower than the level at the end of measurement.
NCT
Calculation,
judgment
Weld current
(10) Overflow Display
When the measured current values exceed the maximum setting range, the
overflow mark (
↑
) will be displayed. In addition, when the time exceeds 99 cycles
in AC and 40 cycles in DC, the overflow mark (
↑
) will be shown in the time
display.
(Example)
↑
.
↑
↑
K
1
2
C
↑
↑
.
↑
K
1
2
C
8 . 6 0 K
↑ ↑
C
Overflow-mark display standards
Low range
> 9.99 kA
Current
values
High range
> 49.9 kA
AC
> 99 CYCLES
CYC.
> 40 CYCLES
Time
DC
SEC. >
0.80
The decimal point indicates 0.5 cycles.
The current is over the limit in the Lo range.
The current is over the limit in the Hi range.
The time is over the limit in the Lo range.