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• To download your changes to the weld control, press
. (Changes must be downloaded to take effect.)
- Enter the WCU number to receive the new data
and press
-
. (The control prompts you to
enter the stepper number you want to receive the
new data.)
- Press the stepper number to receive the new data
and press
-
.
• To exit without changing any data at the WCU and to
return to the Review Stepper menu, press
.
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The SureWeld stepper uses the weld control’s ability to
accurately measure the power factor during every cycle of the
weld, rather than arbitrarily adding heat at a programmed weld
count set-point.
The control uses the power factor to calculate whether expulsion
occurred at any point during the weld, and to maintain current at
a point just below expulsion.
If the control detects expulsion for a preset number of welds, the
stepper automatically decreases the step heat. If the control does
not detect expulsion for a preset number of welds, it
automatically increases step heat.
The SureWeld stepper seeks the percent which will cause
expulsion, then backs off the heat. The stepper uses real data
accumulated over a number of welds to determine when heat
adjustments are required.
The stepper uses the actual secondary current read during the
last weld, and compares it to an exponential or running average
of the last few welds executed by a weld schedule. This running
average is used to determine high and low current conditions
and deviation from a current window.
If you select the SureWeld stepper (in the set-up parameters), you
must program a series of parameters to tell the weld control how
to correctly calculate factors such as the point of expulsion.
You’ll use the Review SureWeld Stepper display to review or
program these unique parameter.
