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SUNSTONE CDDP-A USERS GUIDE
Comparator
The Comparator Screen can be used to monitor the peak weld
values of the previous welds. The welder can monitor the peak
voltage, peak current, and peak power simultaneously. Both
Pulse 1 and Pulse 2 can be monitored.
The Comparator Screen has a similar layout to the Home
screen. The Waveform displays the output from the previous
weld. The values of the previous weld will be drawn on the graph
in red. Horizontal blue bars will represent the lower and upper
limits for the peak values. The lower and upper limits can be
programmed on the lower half of this screen. See Figure 16.1.
The three tabs below the “comparator” button will toggle the
input values between Peak Voltage, Peak Current, and Peak
Power. The circle in the upper right of each of these buttons will
display a color based on the previous weld’s monitored values.
A green circle indicates that the previous weld was within the
limits. A red circle indicates that the previous weld was outside
of the limits.
HOW TO TURN ON THE COMPARATOR
• Select the tab of the value you want to monitor (Peak
Voltage, Peak Current, and/or Peak Power)
• Turn the comparator on for Pulse 1, Pulse 2, or both.
• Set the upper limit values for the pulses that will be
monitored.
• Set the lower limit values for the pulses that will be
monitored.
NOTE: If you are unsure of what values to set for the limits,
make a dozen test welds that pass your quality control
standards, and see what values are recorded. That should give
you a small sample set of data to use. Next, take those values
and determine how much tolerance you want to add to those
values, and then set your limits based on those tolerances.
The “Last Peak” displays the monitored peak results from the
last weld. The horizontal bar under the number will be green if
the monitored peak value was between the upper and lower
limits. The horizontal bar under the number will be red if the
monitored peak value was outside of the upper and lower limits.
Figure 16.1. The Home Screen with the
Comparator Tab and Peak Voltage sub-tab
selected.
